killbill-memoizeit

junction: Introducing a new SubscriptionBillingEvent type

3/8/2019 1:40:16 AM

Changes

Details

diff --git a/api/src/main/java/org/killbill/billing/junction/BillingEvent.java b/api/src/main/java/org/killbill/billing/junction/BillingEvent.java
index 9588349..02e0bb6 100644
--- a/api/src/main/java/org/killbill/billing/junction/BillingEvent.java
+++ b/api/src/main/java/org/killbill/billing/junction/BillingEvent.java
@@ -20,6 +20,7 @@ package org.killbill.billing.junction;
 
 import java.math.BigDecimal;
 import java.util.List;
+import java.util.UUID;
 
 import org.joda.time.DateTime;
 import org.killbill.billing.catalog.api.BillingAlignment;
@@ -34,6 +35,11 @@ import org.killbill.billing.subscription.api.SubscriptionBaseTransitionType;
 
 public interface BillingEvent extends Comparable<BillingEvent> {
 
+    UUID getSubscriptionId();
+
+
+    UUID getBundleId();
+
     /**
      * @return the billCycleDay in the account timezone as seen for that subscription at that time
      * <p/>
@@ -46,10 +52,6 @@ public interface BillingEvent extends Comparable<BillingEvent> {
      */
     BillingAlignment getBillingAlignment();
 
-    /**
-     * @return the subscription
-     */
-    SubscriptionBase getSubscription();
 
     /**
      * @return the date for when that event became effective
@@ -84,7 +86,7 @@ public interface BillingEvent extends Comparable<BillingEvent> {
     /**
      * @return the recurring price for the phase
      */
-    BigDecimal getRecurringPrice(DateTime effectiveDate) throws CatalogApiException;
+    BigDecimal getRecurringPrice();
 
     /**
      * @return the currency for the account being invoiced
diff --git a/api/src/main/java/org/killbill/billing/subscription/api/SubscriptionBaseInternalApi.java b/api/src/main/java/org/killbill/billing/subscription/api/SubscriptionBaseInternalApi.java
index 562aa85..4da292a 100644
--- a/api/src/main/java/org/killbill/billing/subscription/api/SubscriptionBaseInternalApi.java
+++ b/api/src/main/java/org/killbill/billing/subscription/api/SubscriptionBaseInternalApi.java
@@ -31,12 +31,11 @@ import org.killbill.billing.callcontext.InternalTenantContext;
 import org.killbill.billing.catalog.api.BillingActionPolicy;
 import org.killbill.billing.catalog.api.Catalog;
 import org.killbill.billing.catalog.api.CatalogApiException;
-import org.killbill.billing.catalog.api.PlanPhasePriceOverride;
-import org.killbill.billing.catalog.api.PlanPhaseSpecifier;
 import org.killbill.billing.entitlement.api.EntitlementAOStatusDryRun;
 import org.killbill.billing.entitlement.api.EntitlementSpecifier;
 import org.killbill.billing.events.EffectiveSubscriptionInternalEvent;
 import org.killbill.billing.invoice.api.DryRunArguments;
+import org.killbill.billing.subscription.api.user.SubscriptionBillingEvent;
 import org.killbill.billing.subscription.api.user.SubscriptionBaseApiException;
 import org.killbill.billing.subscription.api.user.SubscriptionBaseBundle;
 import org.killbill.billing.util.entity.Pagination;
@@ -83,7 +82,7 @@ public interface SubscriptionBaseInternalApi {
 
     public List<EffectiveSubscriptionInternalEvent> getAllTransitions(SubscriptionBase subscription, InternalTenantContext context);
 
-    public List<EffectiveSubscriptionInternalEvent> getBillingTransitions(SubscriptionBase subscription, InternalTenantContext context);
+    public List<SubscriptionBillingEvent> getSubscriptionBillingEvents(SubscriptionBase subscription, InternalTenantContext context);
 
     public DateTime getDryRunChangePlanEffectiveDate(SubscriptionBase subscription, EntitlementSpecifier spec, DateTime requestedDate, BillingActionPolicy policy, InternalCallContext context) throws SubscriptionBaseApiException, CatalogApiException;
 
diff --git a/api/src/main/java/org/killbill/billing/subscription/api/user/SubscriptionBillingEvent.java b/api/src/main/java/org/killbill/billing/subscription/api/user/SubscriptionBillingEvent.java
new file mode 100644
index 0000000..91be9fb
--- /dev/null
+++ b/api/src/main/java/org/killbill/billing/subscription/api/user/SubscriptionBillingEvent.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2014-2019 Groupon, Inc
+ * Copyright 2014-2019 The Billing Project, LLC
+ *
+ * The Billing Project licenses this file to you under the Apache License, version 2.0
+ * (the "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at:
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.killbill.billing.subscription.api.user;
+
+import org.joda.time.DateTime;
+import org.killbill.billing.subscription.api.SubscriptionBaseTransitionType;
+
+public interface SubscriptionBillingEvent {
+
+    String getPlanName();
+
+    String getPlanPhaseName();
+
+    DateTime getEffectiveDate();
+
+    Long getTotalOrdering();
+
+    SubscriptionBaseTransitionType getType();
+
+    DateTime getLastChangePlanDate();
+
+    public Integer getBcdLocal();
+
+}
diff --git a/invoice/src/main/java/org/killbill/billing/invoice/generator/FixedAndRecurringInvoiceItemGenerator.java b/invoice/src/main/java/org/killbill/billing/invoice/generator/FixedAndRecurringInvoiceItemGenerator.java
index 9756bff..24ad2ee 100644
--- a/invoice/src/main/java/org/killbill/billing/invoice/generator/FixedAndRecurringInvoiceItemGenerator.java
+++ b/invoice/src/main/java/org/killbill/billing/invoice/generator/FixedAndRecurringInvoiceItemGenerator.java
@@ -139,8 +139,8 @@ public class FixedAndRecurringInvoiceItemGenerator extends InvoiceItemGenerator 
             final BillingEvent thisEvent = nextEvent;
             nextEvent = eventIt.next();
             if (!events.getSubscriptionIdsWithAutoInvoiceOff().
-                    contains(thisEvent.getSubscription().getId())) { // don't consider events for subscriptions that have auto_invoice_off
-                final BillingEvent adjustedNextEvent = (thisEvent.getSubscription().getId() == nextEvent.getSubscription().getId()) ? nextEvent : null;
+                    contains(thisEvent.getSubscriptionId())) { // don't consider events for subscriptions that have auto_invoice_off
+                final BillingEvent adjustedNextEvent = (thisEvent.getSubscriptionId() == nextEvent.getSubscriptionId()) ? nextEvent : null;
                 final List<InvoiceItem> newProposedItems = processRecurringEvent(invoiceId, accountId, thisEvent, adjustedNextEvent, targetDate, currency, invoiceItemGeneratorLogger, thisEvent.getPlan().getRecurringBillingMode(), perSubscriptionFutureNotificationDate, internalCallContext);
                 proposedItems.addAll(newProposedItems);
             }
@@ -187,7 +187,7 @@ public class FixedAndRecurringInvoiceItemGenerator extends InvoiceItemGenerator 
         final LocalDate curLocalEffectiveDate = internalCallContext.toLocalDate(currentBillingEvent.getEffectiveDate());
         if (prevComputedFixedItem != null && /* If we have computed a previous item */
             prevComputedFixedItem.getStartDate().compareTo(curLocalEffectiveDate) == 0 && /* The current billing event happens at the same date */
-            prevComputedFixedItem.getSubscriptionId().compareTo(currentBillingEvent.getSubscription().getId()) == 0 /* The current billing event happens for the same subscription */) {
+            prevComputedFixedItem.getSubscriptionId().compareTo(currentBillingEvent.getSubscriptionId()) == 0 /* The current billing event happens for the same subscription */) {
             return true;
         } else {
             return false;
@@ -231,13 +231,13 @@ public class FixedAndRecurringInvoiceItemGenerator extends InvoiceItemGenerator 
                         if (maxEndDate != null && maxEndDate.compareTo(itemDatum.getEndDate()) < 0) {
                             break;
                         }
-                        final BigDecimal rate = thisEvent.getRecurringPrice(internalCallContext.toUTCDateTime(itemDatum.getStartDate()));
+                        final BigDecimal rate = thisEvent.getRecurringPrice();
                         if (rate != null) {
                             final BigDecimal amount = KillBillMoney.of(itemDatum.getNumberOfCycles().multiply(rate), currency);
                             final RecurringInvoiceItem recurringItem = new RecurringInvoiceItem(invoiceId,
                                                                                                 accountId,
-                                                                                                thisEvent.getSubscription().getBundleId(),
-                                                                                                thisEvent.getSubscription().getId(),
+                                                                                                thisEvent.getBundleId(),
+                                                                                                thisEvent.getSubscriptionId(),
                                                                                                 thisEvent.getPlan().getProduct().getName(),
                                                                                                 thisEvent.getPlan().getName(),
                                                                                                 thisEvent.getPlanPhase().getName(),
@@ -247,7 +247,7 @@ public class FixedAndRecurringInvoiceItemGenerator extends InvoiceItemGenerator 
                             items.add(recurringItem);
                         }
                     }
-                    updatePerSubscriptionNextNotificationDate(thisEvent.getSubscription().getId(), itemDataWithNextBillingCycleDate.getNextBillingCycleDate(), items, billingMode,
+                    updatePerSubscriptionNextNotificationDate(thisEvent.getSubscriptionId(), itemDataWithNextBillingCycleDate.getNextBillingCycleDate(), items, billingMode,
                                                               perSubscriptionFutureNotificationDate);
                 }
             }
@@ -398,8 +398,8 @@ public class FixedAndRecurringInvoiceItemGenerator extends InvoiceItemGenerator 
             final BigDecimal fixedPrice = thisEvent.getFixedPrice();
 
             if (fixedPrice != null) {
-                final FixedPriceInvoiceItem fixedPriceInvoiceItem = new FixedPriceInvoiceItem(invoiceId, accountId, thisEvent.getSubscription().getBundleId(),
-                                                                                              thisEvent.getSubscription().getId(),
+                final FixedPriceInvoiceItem fixedPriceInvoiceItem = new FixedPriceInvoiceItem(invoiceId, accountId, thisEvent.getBundleId(),
+                                                                                              thisEvent.getSubscriptionId(),
                                                                                               thisEvent.getPlan().getProduct().getName(), thisEvent.getPlan().getName(), thisEvent.getPlanPhase().getName(),
                                                                                               roundedStartDate, fixedPrice, currency);
 
diff --git a/invoice/src/main/java/org/killbill/billing/invoice/generator/UsageInvoiceItemGenerator.java b/invoice/src/main/java/org/killbill/billing/invoice/generator/UsageInvoiceItemGenerator.java
index a99dc62..3ce549c 100644
--- a/invoice/src/main/java/org/killbill/billing/invoice/generator/UsageInvoiceItemGenerator.java
+++ b/invoice/src/main/java/org/killbill/billing/invoice/generator/UsageInvoiceItemGenerator.java
@@ -122,7 +122,7 @@ public class UsageInvoiceItemGenerator extends InvoiceItemGenerator {
                     continue;
                 }
 
-                final UUID subscriptionId = event.getSubscription().getId();
+                final UUID subscriptionId = event.getSubscriptionId();
                 if (curSubscriptionId != null && !curSubscriptionId.equals(subscriptionId)) {
                     final SubscriptionUsageInArrear subscriptionUsageInArrear = new SubscriptionUsageInArrear(account.getId(), invoiceId, curEvents, rawUsgRes.getRawUsage(), rawUsgRes.getExistingTrackingIds(), targetDate, rawUsgRes.getRawUsageStartDate(), usageDetailMode, internalCallContext);
                     final List<InvoiceItem> usageInArrearItems = perSubscriptionInArrearUsageItems.get(curSubscriptionId);
diff --git a/invoice/src/main/java/org/killbill/billing/invoice/InvoiceDispatcher.java b/invoice/src/main/java/org/killbill/billing/invoice/InvoiceDispatcher.java
index 2bc350b..8f516ec 100644
--- a/invoice/src/main/java/org/killbill/billing/invoice/InvoiceDispatcher.java
+++ b/invoice/src/main/java/org/killbill/billing/invoice/InvoiceDispatcher.java
@@ -426,7 +426,7 @@ public class InvoiceDispatcher {
         final DateTime now = clock.getUTCNow();
         final Map<UUID, DateTime> result = new HashMap<UUID, DateTime>();
         for (final BillingEvent evt : billingEvents) {
-            final UUID subscriptionId = evt.getSubscription().getId();
+            final UUID subscriptionId = evt.getSubscriptionId();
             final DateTime evtEffectiveDate = evt.getEffectiveDate();
             if (evtEffectiveDate.compareTo(now) <= 0) {
                 continue;
@@ -514,12 +514,12 @@ public class InvoiceDispatcher {
         return Iterables.transform(Iterables.filter(billingEvents, new Predicate<BillingEvent>() {
             @Override
             public boolean apply(final BillingEvent input) {
-                return input.getSubscription().getBundleId().equals(dryRunArguments.getBundleId());
+                return input.getBundleId().equals(dryRunArguments.getBundleId());
             }
         }), new Function<BillingEvent, UUID>() {
             @Override
             public UUID apply(final BillingEvent input) {
-                return input.getSubscription().getId();
+                return input.getSubscriptionId();
             }
         });
     }
@@ -675,7 +675,7 @@ public class InvoiceDispatcher {
                                                                                                             new Function<BillingEvent, UUID>() {
                                                                                                                 @Override
                                                                                                                 public UUID apply(final BillingEvent billingEvent) {
-                                                                                                                    return billingEvent.getSubscription().getId();
+                                                                                                                    return billingEvent.getSubscriptionId();
                                                                                                                 }
                                                                                                             }));
         populateNextFutureNotificationDate(rescheduleDate, subscriptionIds, notificationsBuilder, context);
diff --git a/invoice/src/main/java/org/killbill/billing/invoice/usage/ContiguousIntervalUsageInArrear.java b/invoice/src/main/java/org/killbill/billing/invoice/usage/ContiguousIntervalUsageInArrear.java
index 8bf1ca5..0c39ef4 100644
--- a/invoice/src/main/java/org/killbill/billing/invoice/usage/ContiguousIntervalUsageInArrear.java
+++ b/invoice/src/main/java/org/killbill/billing/invoice/usage/ContiguousIntervalUsageInArrear.java
@@ -471,11 +471,11 @@ public abstract class ContiguousIntervalUsageInArrear {
     }
 
     public UUID getBundleId() {
-        return billingEvents.get(0).getSubscription().getBundleId();
+        return billingEvents.get(0).getBundleId();
     }
 
     public UUID getSubscriptionId() {
-        return billingEvents.get(0).getSubscription().getId();
+        return billingEvents.get(0).getSubscriptionId();
     }
 
     // STEPH_USAGE planName/phaseName,BCD,... might not be correct if we changed plan but Usage section was exactly similar
diff --git a/invoice/src/main/java/org/killbill/billing/invoice/usage/SubscriptionUsageInArrear.java b/invoice/src/main/java/org/killbill/billing/invoice/usage/SubscriptionUsageInArrear.java
index a9b11f3..9e537bb 100644
--- a/invoice/src/main/java/org/killbill/billing/invoice/usage/SubscriptionUsageInArrear.java
+++ b/invoice/src/main/java/org/killbill/billing/invoice/usage/SubscriptionUsageInArrear.java
@@ -103,7 +103,7 @@ public class SubscriptionUsageInArrear {
         this.rawSubscriptionUsage = Ordering.<RawUsage>from(RAW_USAGE_DATE_COMPARATOR).sortedCopy(Iterables.filter(rawUsage, new Predicate<RawUsage>() {
             @Override
             public boolean apply(final RawUsage input) {
-                return input.getSubscriptionId().equals(subscriptionBillingEvents.get(0).getSubscription().getId());
+                return input.getSubscriptionId().equals(subscriptionBillingEvents.get(0).getSubscriptionId());
             }
         }));
         this.existingTrackingIds = existingTrackingIds;
diff --git a/invoice/src/test/java/org/killbill/billing/invoice/TestInvoiceHelper.java b/invoice/src/test/java/org/killbill/billing/invoice/TestInvoiceHelper.java
index e61343d..d8ad91e 100644
--- a/invoice/src/test/java/org/killbill/billing/invoice/TestInvoiceHelper.java
+++ b/invoice/src/test/java/org/killbill/billing/invoice/TestInvoiceHelper.java
@@ -358,6 +358,16 @@ public class TestInvoiceHelper {
         Mockito.when(mockAccount.getTimeZone()).thenReturn(DateTimeZone.UTC);
         return new BillingEvent() {
             @Override
+            public UUID getSubscriptionId() {
+                return subscription.getId();
+            }
+
+            @Override
+            public UUID getBundleId() {
+                return subscription.getBundleId();
+            }
+
+            @Override
             public int getBillCycleDayLocal() {
                 return billCycleDayLocal;
             }
@@ -367,10 +377,6 @@ public class TestInvoiceHelper {
                 return null;
             }
 
-            @Override
-            public SubscriptionBase getSubscription() {
-                return subscription;
-            }
 
             @Override
             public DateTime getEffectiveDate() {
@@ -403,7 +409,7 @@ public class TestInvoiceHelper {
             }
 
             @Override
-            public BigDecimal getRecurringPrice(DateTime effectiveDate) {
+            public BigDecimal getRecurringPrice() {
                 return recurringPrice;
             }
 
@@ -434,8 +440,8 @@ public class TestInvoiceHelper {
 
             @Override
             public int compareTo(final BillingEvent e1) {
-                if (!getSubscription().getId().equals(e1.getSubscription().getId())) { // First order by subscription
-                    return getSubscription().getId().compareTo(e1.getSubscription().getId());
+                if (!getSubscriptionId().equals(e1.getSubscriptionId())) { // First order by subscription
+                    return getSubscriptionId().compareTo(e1.getSubscriptionId());
                 } else { // subscriptions are the same
                     if (!getEffectiveDate().equals(e1.getEffectiveDate())) { // Secondly order by date
                         return getEffectiveDate().compareTo(e1.getEffectiveDate());
diff --git a/invoice/src/test/java/org/killbill/billing/invoice/usage/TestUsageInArrearBase.java b/invoice/src/test/java/org/killbill/billing/invoice/usage/TestUsageInArrearBase.java
index 5daaec1..109b44a 100644
--- a/invoice/src/test/java/org/killbill/billing/invoice/usage/TestUsageInArrearBase.java
+++ b/invoice/src/test/java/org/killbill/billing/invoice/usage/TestUsageInArrearBase.java
@@ -187,6 +187,8 @@ public abstract class TestUsageInArrearBase extends InvoiceTestSuiteNoDB {
         Mockito.when(result.getBillCycleDayLocal()).thenReturn(bcd);
         Mockito.when(result.getEffectiveDate()).thenReturn(effectiveDate);
         Mockito.when(result.getBillingPeriod()).thenReturn(billingPeriod);
+        Mockito.when(result.getSubscriptionId()).thenReturn(subscriptionId);
+        Mockito.when(result.getBundleId()).thenReturn(bundleId);
 
         final Account account = Mockito.mock(Account.class);
         Mockito.when(account.getId()).thenReturn(accountId);
@@ -194,7 +196,6 @@ public abstract class TestUsageInArrearBase extends InvoiceTestSuiteNoDB {
         final SubscriptionBase subscription = Mockito.mock(SubscriptionBase.class);
         Mockito.when(subscription.getId()).thenReturn(subscriptionId);
         Mockito.when(subscription.getBundleId()).thenReturn(bundleId);
-        Mockito.when(result.getSubscription()).thenReturn(subscription);
 
         final Product product = Mockito.mock(Product.class);
         Mockito.when(product.getName()).thenReturn(productName);
diff --git a/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/BlockingCalculator.java b/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/BlockingCalculator.java
index 0da70fa..8452ca2 100644
--- a/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/BlockingCalculator.java
+++ b/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/BlockingCalculator.java
@@ -79,6 +79,7 @@ public class BlockingCalculator {
             return false;
         }
 
+
         final Hashtable<UUID, List<SubscriptionBase>> bundleMap = createBundleSubscriptionMap(billingEvents);
 
         final SortedSet<BillingEvent> billingEventsToAdd = new TreeSet<BillingEvent>();
@@ -228,7 +229,7 @@ public class BlockingCalculator {
     protected SortedSet<BillingEvent> filter(final SortedSet<BillingEvent> billingEvents, final SubscriptionBase subscription) {
         final SortedSet<BillingEvent> result = new TreeSet<BillingEvent>();
         for (final BillingEvent event : billingEvents) {
-            if (event.getSubscription().getId().equals(subscription.getId())) {
+            if (event.getSubscriptionId().equals(subscription.getId())) {
                 result.add(event);
             }
         }
@@ -238,7 +239,6 @@ public class BlockingCalculator {
     protected BillingEvent createNewDisableEvent(final DateTime disabledDurationStart, final BillingEvent previousEvent, final Catalog catalog) throws CatalogApiException {
 
         final int billCycleDay = previousEvent.getBillCycleDayLocal();
-        final SubscriptionBase subscription = previousEvent.getSubscription();
         final DateTime effectiveDate = disabledDurationStart;
         final PlanPhase planPhase = previousEvent.getPlanPhase();
         final Plan plan = previousEvent.getPlan();
@@ -246,6 +246,7 @@ public class BlockingCalculator {
         // Make sure to set the fixed price to null and the billing period to NO_BILLING_PERIOD,
         // which makes invoice disregard this event
         final BigDecimal fixedPrice = null;
+        final BigDecimal recurringPrice = null;
         final BillingPeriod billingPeriod = BillingPeriod.NO_BILLING_PERIOD;
 
         final Currency currency = previousEvent.getCurrency();
@@ -253,19 +254,19 @@ public class BlockingCalculator {
         final SubscriptionBaseTransitionType type = SubscriptionBaseTransitionType.START_BILLING_DISABLED;
         final Long totalOrdering = globaltotalOrder.getAndIncrement();
 
-        return new DefaultBillingEvent(subscription, effectiveDate, true, plan, planPhase, fixedPrice,
+        return new DefaultBillingEvent(((DefaultBillingEvent) previousEvent).getSubscription(), effectiveDate, true, plan, planPhase, fixedPrice, recurringPrice,
                                        currency,
                                        billingPeriod, billCycleDay,
-                                       description, totalOrdering, type, catalog, true);
+                                       description, totalOrdering, type, true);
     }
 
     protected BillingEvent createNewReenableEvent(final DateTime odEventTime, final BillingEvent previousEvent, final Catalog catalog, final InternalTenantContext context) throws CatalogApiException {
         // All fields are populated with the event state from before the blocking period, for invoice to resume invoicing
         final int billCycleDay = previousEvent.getBillCycleDayLocal();
-        final SubscriptionBase subscription = previousEvent.getSubscription();
         final DateTime effectiveDate = odEventTime;
         final PlanPhase planPhase = previousEvent.getPlanPhase();
         final BigDecimal fixedPrice = previousEvent.getFixedPrice();
+        final BigDecimal recurringPrice = previousEvent.getRecurringPrice();
         final Plan plan = previousEvent.getPlan();
         final Currency currency = previousEvent.getCurrency();
         final String description = "";
@@ -273,23 +274,23 @@ public class BlockingCalculator {
         final SubscriptionBaseTransitionType type = SubscriptionBaseTransitionType.END_BILLING_DISABLED;
         final Long totalOrdering = globaltotalOrder.getAndIncrement();
 
-        return new DefaultBillingEvent(subscription, effectiveDate, true, plan, planPhase, fixedPrice,
+        return new DefaultBillingEvent(((DefaultBillingEvent) previousEvent).getSubscription(), effectiveDate, true, plan, planPhase, fixedPrice, recurringPrice,
                                        currency,
                                        billingPeriod, billCycleDay,
-                                       description, totalOrdering, type, catalog, false);
+                                       description, totalOrdering, type, false);
     }
 
     protected Hashtable<UUID, List<SubscriptionBase>> createBundleSubscriptionMap(final SortedSet<BillingEvent> billingEvents) {
         final Hashtable<UUID, List<SubscriptionBase>> result = new Hashtable<UUID, List<SubscriptionBase>>();
         for (final BillingEvent event : billingEvents) {
-            final UUID bundleId = event.getSubscription().getBundleId();
+            final UUID bundleId = event.getBundleId();
             List<SubscriptionBase> subs = result.get(bundleId);
             if (subs == null) {
                 subs = new ArrayList<SubscriptionBase>();
                 result.put(bundleId, subs);
             }
-            if (!result.get(bundleId).contains(event.getSubscription())) {
-                subs.add(event.getSubscription());
+            if (!result.get(bundleId).contains(((DefaultBillingEvent)event).getSubscription())) {
+                subs.add(((DefaultBillingEvent)event).getSubscription());
             }
         }
         return result;
diff --git a/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultBillingEvent.java b/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultBillingEvent.java
index 43da1ab..628ad61 100644
--- a/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultBillingEvent.java
+++ b/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultBillingEvent.java
@@ -20,6 +20,7 @@ package org.killbill.billing.junction.plumbing.billing;
 
 import java.math.BigDecimal;
 import java.util.List;
+import java.util.UUID;
 
 import javax.annotation.Nullable;
 
@@ -32,96 +33,104 @@ import org.killbill.billing.catalog.api.Currency;
 import org.killbill.billing.catalog.api.Plan;
 import org.killbill.billing.catalog.api.PlanPhase;
 import org.killbill.billing.catalog.api.Usage;
-import org.killbill.billing.events.SubscriptionInternalEvent;
 import org.killbill.billing.junction.BillingEvent;
 import org.killbill.billing.subscription.api.SubscriptionBase;
 import org.killbill.billing.subscription.api.SubscriptionBaseTransitionType;
+import org.killbill.billing.subscription.api.user.SubscriptionBillingEvent;
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 
 public class DefaultBillingEvent implements BillingEvent {
 
+    private final UUID subscriptionId;
+    private final UUID bundleId;
+
     private final int billCycleDayLocal;
     private final BillingAlignment billingAlignment;
-    private final SubscriptionBase subscription;
+
     private final DateTime effectiveDate;
+
     private final PlanPhase planPhase;
     private final Plan plan;
+    private final BillingPeriod billingPeriod;
+
     private final BigDecimal fixedPrice;
+    private final BigDecimal recurringPrice;
     private final Currency currency;
     private final String description;
-    private final BillingPeriod billingPeriod;
     private final SubscriptionBaseTransitionType type;
     private final Long totalOrdering;
 
     private final List<Usage> usages;
 
-    private final Catalog catalog;
     private final boolean isDisableEvent;
-    private final PlanPhase nextPlanPhase;
 
     private final DateTime catalogEffectiveDate;
 
-    public DefaultBillingEvent(final SubscriptionInternalEvent transition,
+
+    // TODO Ugly, can that go completely ?
+    private final SubscriptionBase subscription;
+
+    public DefaultBillingEvent(final SubscriptionBillingEvent transition,
                                final SubscriptionBase subscription,
                                final int billCycleDayLocal,
                                final BillingAlignment billingAlignment,
                                final Currency currency,
                                final Catalog catalog) throws CatalogApiException {
-        final boolean isActive = transition.getTransitionType() != SubscriptionBaseTransitionType.CANCEL;
-
-        if (isActive) {
-            final String planName = transition.getNextPlan();
-            this.plan = (planName != null) ? catalog.findPlan(planName, transition.getEffectiveTransitionTime(), transition.getSubscriptionStartDate()) : null;
+        final boolean isActive = transition.getType() != SubscriptionBaseTransitionType.CANCEL;
 
-            final String planPhaseName = transition.getNextPhase();
-            this.planPhase = (planPhaseName != null && this.plan != null) ? this.plan.findPhase(planPhaseName) : null;
-            this.nextPlanPhase = this.planPhase;
+        this.subscription = subscription;
 
-            this.billingPeriod = getRecurringBillingPeriod(nextPlanPhase);
-        } else {
-            final String planName = transition.getPreviousPlan();
-            this.plan = (planName != null) ? catalog.findPlan(planName, transition.getEffectiveTransitionTime(), transition.getSubscriptionStartDate()) : null;
-            final Plan prevPlan = this.plan;
+        this.subscriptionId = subscription.getId();
+        this.bundleId = subscription.getBundleId();
 
-            final String planPhaseName = transition.getPreviousPhase();
-            this.planPhase = (planPhaseName != null && this.plan != null) ? this.plan.findPhase(planPhaseName) : null;
-            this.nextPlanPhase = null;
+        this.type = transition.getType();
+        this.plan = transition.getPlanName() != null ? catalog.findPlan(transition.getPlanName(), transition.getEffectiveDate(), subscription.getStartDate()) : null;
+        this.planPhase = transition.getPlanPhaseName() != null && this.plan != null ?  this.plan.findPhase(transition.getPlanPhaseName()) : null;
+        this.billingPeriod = getRecurringBillingPeriod(planPhase);
 
-            final String prevPhaseName = transition.getPreviousPhase();
-            final PlanPhase prevPlanPhase = (prevPhaseName != null && prevPlan != null) ? prevPlan.findPhase(prevPhaseName) : null;
-            this.billingPeriod = getRecurringBillingPeriod(prevPlanPhase);
-        }
         this.catalogEffectiveDate = plan == null ? null : new DateTime(plan.getCatalog().getEffectiveDate());
 
         this.billCycleDayLocal = billCycleDayLocal;
         this.billingAlignment = billingAlignment;
-        this.catalog = catalog;
         this.currency = currency;
-        this.description = transition.getTransitionType().toString();
-        this.effectiveDate = transition.getEffectiveTransitionTime();
-        this.fixedPrice = transition.getTransitionType() != SubscriptionBaseTransitionType.BCD_CHANGE ? getFixedPrice(nextPlanPhase, currency) : null;
+        this.description = transition.getType().toString();
+        this.effectiveDate = transition.getEffectiveDate();
         this.isDisableEvent = false;
-        this.subscription = subscription;
         this.totalOrdering = transition.getTotalOrdering();
-        this.type = transition.getTransitionType();
         this.usages = initializeUsage(isActive);
+
+        this.fixedPrice =  computeFixedPrice();
+        this.recurringPrice = computeRecurringPrice();
+
+
     }
 
-    public DefaultBillingEvent(final SubscriptionBase subscription, final DateTime effectiveDate, final boolean isActive,
-                               final Plan plan, final PlanPhase planPhase, final BigDecimal fixedPrice,
+    public DefaultBillingEvent(final SubscriptionBase subscription,
+                               final DateTime effectiveDate,
+                               final boolean isActive,
+                               final Plan plan,
+                               final PlanPhase planPhase,
+                               final BigDecimal fixedPrice,
+                               final BigDecimal recurringPrice,
                                final Currency currency,
-                               final BillingPeriod billingPeriod, final int billCycleDayLocal,
-                               final String description, final long totalOrdering, final SubscriptionBaseTransitionType type,
-                               final Catalog catalog,
+                               final BillingPeriod billingPeriod,
+                               final int billCycleDayLocal,
+                               final String description,
+                               final long totalOrdering,
+                               final SubscriptionBaseTransitionType type,
                                final boolean isDisableEvent) throws CatalogApiException {
-        this.catalog = catalog;
+
         this.subscription = subscription;
+
+        this.subscriptionId = subscription.getId();
+        this.bundleId = subscription.getBundleId();
         this.effectiveDate = effectiveDate;
         this.plan = plan;
         this.planPhase = planPhase;
         this.fixedPrice = fixedPrice;
+        this.recurringPrice = recurringPrice;
         this.currency = currency;
         this.billingPeriod = billingPeriod;
         this.billCycleDayLocal = billCycleDayLocal;
@@ -130,15 +139,18 @@ public class DefaultBillingEvent implements BillingEvent {
         this.totalOrdering = totalOrdering;
         this.usages = initializeUsage(isActive);
         this.isDisableEvent = isDisableEvent;
-        this.nextPlanPhase = isDisableEvent ? null : planPhase;
         this.catalogEffectiveDate = plan != null ? new DateTime(plan.getCatalog().getEffectiveDate()) : null;
         this.billingAlignment = null;
     }
 
+    SubscriptionBase getSubscription() {
+        return subscription;
+    }
+
     @Override
     public int compareTo(final BillingEvent e1) {
-        if (!getSubscription().getId().equals(e1.getSubscription().getId())) { // First order by subscription
-            return getSubscription().getId().compareTo(e1.getSubscription().getId());
+        if (!subscriptionId.equals(e1.getSubscriptionId())) { // First order by subscription
+            return subscriptionId.compareTo(e1.getSubscriptionId());
         } else { // subscriptions are the same
             if (!getEffectiveDate().equals(e1.getEffectiveDate())) { // Secondly order by date
                 return getEffectiveDate().compareTo(e1.getEffectiveDate());
@@ -182,6 +194,16 @@ public class DefaultBillingEvent implements BillingEvent {
     }
 
     @Override
+    public UUID getSubscriptionId() {
+        return subscriptionId;
+    }
+
+    @Override
+    public UUID getBundleId() {
+        return bundleId;
+    }
+
+    @Override
     public int getBillCycleDayLocal() {
         return billCycleDayLocal;
     }
@@ -191,10 +213,6 @@ public class DefaultBillingEvent implements BillingEvent {
         return billingAlignment;
     }
 
-    @Override
-    public SubscriptionBase getSubscription() {
-        return subscription;
-    }
 
     @Override
     public DateTime getEffectiveDate() {
@@ -227,12 +245,8 @@ public class DefaultBillingEvent implements BillingEvent {
     }
 
     @Override
-    public BigDecimal getRecurringPrice(final DateTime effectiveDate) throws CatalogApiException {
-        if (isDisableEvent || nextPlanPhase == null) {
-            return null;
-        }
-        final PlanPhase effectivePlanPhase = effectiveDate != null ? catalog.findPhase(nextPlanPhase.getName(), effectiveDate, subscription.getStartDate()) : nextPlanPhase;
-        return getRecurringPrice(effectivePlanPhase, currency);
+    public BigDecimal getRecurringPrice() {
+        return recurringPrice;
     }
 
     @Override
@@ -264,7 +278,7 @@ public class DefaultBillingEvent implements BillingEvent {
         sb.append("{type=").append(type);
         sb.append(", effectiveDate=").append(effectiveDate);
         sb.append(", planPhaseName=").append(planPhase.getName());
-        sb.append(", subscriptionId=").append(subscription.getId());
+        sb.append(", subscriptionId=").append(subscriptionId);
         sb.append(", totalOrdering=").append(totalOrdering);
         sb.append('}');
         return sb.toString();
@@ -281,6 +295,12 @@ public class DefaultBillingEvent implements BillingEvent {
 
         final DefaultBillingEvent that = (DefaultBillingEvent) o;
 
+        if (subscriptionId != null ? !subscriptionId.equals(that.subscriptionId) : that.subscriptionId != null) {
+            return false;
+        }
+        if (bundleId != null ? !bundleId.equals(that.bundleId) : that.bundleId != null) {
+            return false;
+        }
         if (billCycleDayLocal != that.billCycleDayLocal) {
             return false;
         }
@@ -305,9 +325,6 @@ public class DefaultBillingEvent implements BillingEvent {
         if (planPhase != null ? !planPhase.equals(that.planPhase) : that.planPhase != null) {
             return false;
         }
-        if (subscription != null ? !subscription.equals(that.subscription) : that.subscription != null) {
-            return false;
-        }
         if (totalOrdering != null ? !totalOrdering.equals(that.totalOrdering) : that.totalOrdering != null) {
             return false;
         }
@@ -321,7 +338,8 @@ public class DefaultBillingEvent implements BillingEvent {
     @Override
     public int hashCode() {
         int result = 31 * billCycleDayLocal;
-        result = 31 * result + (subscription != null ? subscription.hashCode() : 0);
+        result = 31 * result + (subscriptionId != null ? subscriptionId.hashCode() : 0);
+        result = 31 * result + (bundleId != null ? bundleId.hashCode() : 0);
         result = 31 * result + (fixedPrice != null ? fixedPrice.hashCode() : 0);
         result = 31 * result + (effectiveDate != null ? effectiveDate.hashCode() : 0);
         result = 31 * result + (planPhase != null ? planPhase.hashCode() : 0);
@@ -334,12 +352,19 @@ public class DefaultBillingEvent implements BillingEvent {
         return result;
     }
 
-    private BigDecimal getFixedPrice(@Nullable final PlanPhase nextPhase, final Currency currency) throws CatalogApiException {
-        return (nextPhase != null && nextPhase.getFixed() != null && nextPhase.getFixed().getPrice() != null) ? nextPhase.getFixed().getPrice().getPrice(currency) : null;
+    private BigDecimal computeFixedPrice() throws CatalogApiException {
+        if (type == SubscriptionBaseTransitionType.BCD_CHANGE || type == SubscriptionBaseTransitionType.CANCEL) {
+            return null;
+        }
+        return (planPhase != null && planPhase.getFixed() != null && planPhase.getFixed().getPrice() != null) ? planPhase.getFixed().getPrice().getPrice(currency) : null;
     }
 
-    private BigDecimal getRecurringPrice(@Nullable final PlanPhase nextPhase, final Currency currency) throws CatalogApiException {
-        return (nextPhase != null && nextPhase.getRecurring() != null && nextPhase.getRecurring().getRecurringPrice() != null) ? nextPhase.getRecurring().getRecurringPrice().getPrice(currency) : null;
+    private BigDecimal computeRecurringPrice() throws CatalogApiException {
+        // TODO why is logic different than fixedPrice ?
+        if (isDisableEvent || type == SubscriptionBaseTransitionType.CANCEL) {
+            return null;
+        }
+        return (planPhase != null && planPhase.getRecurring() != null && planPhase.getRecurring().getRecurringPrice() != null) ? planPhase.getRecurring().getRecurringPrice().getPrice(currency) : null;
     }
 
     private BillingPeriod getRecurringBillingPeriod(@Nullable final PlanPhase nextPhase) {
@@ -365,6 +390,7 @@ public class DefaultBillingEvent implements BillingEvent {
 
     @Override
     public DateTime getCatalogEffectiveDate() {
+        // TODO Can that go ?
         return catalogEffectiveDate;
     }
 }
diff --git a/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultInternalBillingApi.java b/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultInternalBillingApi.java
index a096e5e..641173d 100644
--- a/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultInternalBillingApi.java
+++ b/junction/src/main/java/org/killbill/billing/junction/plumbing/billing/DefaultInternalBillingApi.java
@@ -43,8 +43,6 @@ import org.killbill.billing.catalog.api.Plan;
 import org.killbill.billing.catalog.api.PlanPhase;
 import org.killbill.billing.catalog.api.PlanPhaseSpecifier;
 import org.killbill.billing.entitlement.api.SubscriptionEventType;
-import org.killbill.billing.events.EffectiveSubscriptionInternalEvent;
-import org.killbill.billing.events.SubscriptionInternalEvent;
 import org.killbill.billing.invoice.api.DryRunArguments;
 import org.killbill.billing.junction.BillingEvent;
 import org.killbill.billing.junction.BillingEventSet;
@@ -52,6 +50,7 @@ import org.killbill.billing.junction.BillingInternalApi;
 import org.killbill.billing.subscription.api.SubscriptionBase;
 import org.killbill.billing.subscription.api.SubscriptionBaseInternalApi;
 import org.killbill.billing.subscription.api.SubscriptionBaseTransitionType;
+import org.killbill.billing.subscription.api.user.SubscriptionBillingEvent;
 import org.killbill.billing.subscription.api.user.SubscriptionBaseApiException;
 import org.killbill.billing.subscription.api.user.SubscriptionBaseBundle;
 import org.killbill.billing.tag.TagInternalApi;
@@ -121,6 +120,7 @@ public class DefaultInternalBillingApi implements BillingInternalApi {
             return result;
         }
 
+
         // Pretty-print the events, before and after the blocking calculator does its magic
         final StringBuilder logStringBuilder = new StringBuilder("Computed billing events for accountId='").append(accountId).append("'");
         eventsToString(logStringBuilder, result);
@@ -235,7 +235,7 @@ public class DefaultInternalBillingApi implements BillingInternalApi {
                 continue;
             }
 
-            final BigDecimal recurringPrice = event.getRecurringPrice(event.getEffectiveDate());
+            final BigDecimal recurringPrice = event.getRecurringPrice();
             final boolean hasRecurringPrice = recurringPrice != null; // Note: could be zero (BCD would still be set, by convention)
             final boolean hasUsage = event.getUsages() != null && !event.getUsages().isEmpty();
             if (!hasRecurringPrice &&
@@ -274,25 +274,25 @@ public class DefaultInternalBillingApi implements BillingInternalApi {
 
         for (final SubscriptionBase subscription : subscriptions) {
 
-            final List<EffectiveSubscriptionInternalEvent> billingTransitions = subscriptionApi.getBillingTransitions(subscription, context);
+            final List<SubscriptionBillingEvent> billingTransitions = subscriptionApi.getSubscriptionBillingEvents(subscription, context);
             if (billingTransitions.isEmpty() ||
-                (billingTransitions.get(0).getTransitionType() != SubscriptionBaseTransitionType.CREATE &&
-                 billingTransitions.get(0).getTransitionType() != SubscriptionBaseTransitionType.TRANSFER)) {
+                (billingTransitions.get(0).getType() != SubscriptionBaseTransitionType.CREATE &&
+                 billingTransitions.get(0).getType() != SubscriptionBaseTransitionType.TRANSFER)) {
                 log.warn("Skipping billing events for subscription " + subscription.getId() + ": Does not start with a valid CREATE transition");
                 skipSubscriptionsSet.add(subscription.getId());
                 return;
             }
 
             Integer overridenBCD = null;
-            for (final EffectiveSubscriptionInternalEvent transition : billingTransitions) {
-                final BillingAlignment alignment = catalog.billingAlignment(getPlanPhaseSpecifierFromTransition(catalog, transition), transition.getEffectiveTransitionTime(), subscription.getStartDate());
+            for (final SubscriptionBillingEvent transition : billingTransitions) {
+                final BillingAlignment alignment = catalog.billingAlignment(getPlanPhaseSpecifierFromTransition(catalog, transition), transition.getEffectiveDate(), subscription.getStartDate());
 
                 //
                 // A BCD_CHANGE transition defines a new billCycleDayLocal for the subscription and this overrides whatever computation
                 // occurs below (which is based on billing alignment policy). Also multiple of those BCD_CHANGE transitions could occur,
                 // to define different intervals with different billing cycle days.
                 //
-                overridenBCD = transition.getNextBillCycleDayLocal() != null ? transition.getNextBillCycleDayLocal() : overridenBCD;
+                overridenBCD = transition.getBcdLocal() != null ? transition.getBcdLocal() : overridenBCD;
                 final int bcdLocal = overridenBCD != null ?
                                      overridenBCD :
                                      calculateBcdForTransition(alignment, bcdCache, baseSubscription, subscription, currentAccountBCD, context);
@@ -311,17 +311,9 @@ public class DefaultInternalBillingApi implements BillingInternalApi {
         return BillCycleDayCalculator.calculateBcdForAlignment(bcdCache, subscription, baseSubscription, alignment, internalTenantContext, accountBillCycleDayLocal);
     }
 
-    private PlanPhaseSpecifier getPlanPhaseSpecifierFromTransition(final Catalog catalog, final SubscriptionInternalEvent transition) throws CatalogApiException {
-        final Plan prevPlan = (transition.getPreviousPlan() != null) ? catalog.findPlan(transition.getPreviousPlan(), transition.getEffectiveTransitionTime(), transition.getSubscriptionStartDate()) : null;
-        final Plan nextPlan = (transition.getNextPlan() != null) ? catalog.findPlan(transition.getNextPlan(), transition.getEffectiveTransitionTime(), transition.getSubscriptionStartDate()) : null;
-
-        final Plan plan = (transition.getTransitionType() != SubscriptionBaseTransitionType.CANCEL) ? nextPlan : prevPlan;
-
-        final PlanPhase prevPhase = prevPlan != null && transition.getPreviousPhase() != null ? prevPlan.findPhase(transition.getPreviousPhase()) : null;
-        final PlanPhase nextPhase = nextPlan != null && transition.getNextPhase() != null ? nextPlan.findPhase(transition.getNextPhase()) : null;
-
-        final PlanPhase phase = (transition.getTransitionType() != SubscriptionBaseTransitionType.CANCEL) ? nextPhase : prevPhase;
-
+    private PlanPhaseSpecifier getPlanPhaseSpecifierFromTransition(final Catalog catalog, final SubscriptionBillingEvent transition) throws CatalogApiException {
+        final Plan plan = catalog.findPlan(transition.getPlanName(), transition.getEffectiveDate(), transition.getLastChangePlanDate());
+        final PlanPhase phase =  plan.findPhase(transition.getPlanPhaseName());
         return new PlanPhaseSpecifier(plan.getName(), phase.getPhaseType());
     }
 
diff --git a/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBillingApi.java b/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBillingApi.java
index e6e6daf..fcdecdf 100644
--- a/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBillingApi.java
+++ b/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBillingApi.java
@@ -54,6 +54,8 @@ import org.killbill.billing.mock.MockEffectiveSubscriptionEvent;
 import org.killbill.billing.mock.MockSubscription;
 import org.killbill.billing.subscription.api.SubscriptionBase;
 import org.killbill.billing.subscription.api.SubscriptionBaseTransitionType;
+import org.killbill.billing.subscription.api.user.SubscriptionBillingEvent;
+import org.killbill.billing.subscription.api.user.DefaultSubscriptionBillingEvent;
 import org.killbill.billing.subscription.api.user.SubscriptionBaseApiException;
 import org.killbill.billing.subscription.api.user.SubscriptionBaseBundle;
 import org.killbill.billing.util.api.TagApiException;
@@ -82,6 +84,7 @@ public class TestBillingApi extends JunctionTestSuiteNoDB {
     private static final UUID bunId = new UUID(2L, 0L);
     private static final String bunKey = bunId.toString();
 
+    private List<SubscriptionBillingEvent> billingTransitions;
     private List<EffectiveSubscriptionInternalEvent> effectiveSubscriptionTransitions;
     private SubscriptionBase subscription;
     private MockCatalog catalog;
@@ -97,6 +100,8 @@ public class TestBillingApi extends JunctionTestSuiteNoDB {
         Mockito.when(bundle.getId()).thenReturn(bunId);
         final List<SubscriptionBaseBundle> bundles = ImmutableList.<SubscriptionBaseBundle>of(bundle);
 
+
+        billingTransitions = new LinkedList<SubscriptionBillingEvent>();
         effectiveSubscriptionTransitions = new LinkedList<EffectiveSubscriptionInternalEvent>();
 
         final DateTime subscriptionStartDate = clock.getUTCNow().minusDays(3);
@@ -111,7 +116,7 @@ public class TestBillingApi extends JunctionTestSuiteNoDB {
         Mockito.when(subscriptionInternalApi.getSubscriptionFromId(Mockito.<UUID>any(), Mockito.<InternalTenantContext>any())).thenReturn(subscription);
         Mockito.when(subscriptionInternalApi.getBundleFromId(Mockito.<UUID>any(), Mockito.<InternalTenantContext>any())).thenReturn(bundle);
         Mockito.when(subscriptionInternalApi.getBaseSubscription(Mockito.<UUID>any(), Mockito.<InternalTenantContext>any())).thenReturn(subscription);
-        Mockito.when(subscriptionInternalApi.getBillingTransitions(Mockito.<SubscriptionBase>any(),  Mockito.<InternalTenantContext>any())).thenReturn(effectiveSubscriptionTransitions);
+        Mockito.when(subscriptionInternalApi.getSubscriptionBillingEvents(Mockito.<SubscriptionBase>any(), Mockito.<InternalTenantContext>any())).thenReturn(billingTransitions);
         Mockito.when(subscriptionInternalApi.getAllTransitions(Mockito.<SubscriptionBase>any(), Mockito.<InternalTenantContext>any())).thenReturn(effectiveSubscriptionTransitions);
 
         final DefaultVersionedCatalog versionedCatalog = catalogService.getFullCatalog(true, true, internalCallContext);
@@ -260,13 +265,13 @@ public class TestBillingApi extends JunctionTestSuiteNoDB {
         }
 
         if (recurringPrice != null) {
-            Assert.assertEquals(recurringPrice.getPrice(Currency.USD), event.getRecurringPrice(null));
+            Assert.assertEquals(recurringPrice.getPrice(Currency.USD), event.getRecurringPrice());
         } else {
-            assertNull(event.getRecurringPrice(null));
+            assertNull(event.getRecurringPrice());
         }
 
         Assert.assertEquals(BCD, event.getBillCycleDayLocal());
-        Assert.assertEquals(id, event.getSubscription().getId());
+        Assert.assertEquals(id, event.getSubscriptionId());
         Assert.assertEquals(time.getDayOfMonth(), event.getEffectiveDate().getDayOfMonth());
         Assert.assertEquals(nextPhase, event.getPlanPhase());
         Assert.assertEquals(nextPlan, event.getPlan());
@@ -300,6 +305,8 @@ public class TestBillingApi extends JunctionTestSuiteNoDB {
                 SubscriptionBaseTransitionType.CREATE, 1, null, 1L, 2L, null);
 
         effectiveSubscriptionTransitions.add(t);
+        billingTransitions.add(new DefaultSubscriptionBillingEvent(SubscriptionBaseTransitionType.CREATE, nextPlan.getName(), nextPhase.getName(), now, 1L, now, null));
+
         return now;
     }
 }
diff --git a/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBlockingCalculator.java b/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBlockingCalculator.java
index 58d299b..cbdd84f 100644
--- a/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBlockingCalculator.java
+++ b/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestBlockingCalculator.java
@@ -357,7 +357,7 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(results.size(), 1);
         assertEquals(results.first().getEffectiveDate(), now);
         assertNull(results.first().getFixedPrice());
-        assertNull(results.first().getRecurringPrice(null));
+        assertNull(results.first().getRecurringPrice());
         assertEquals(results.first().getBillingPeriod(), BillingPeriod.NO_BILLING_PERIOD);
         assertEquals(results.first().getTransitionType(), SubscriptionBaseTransitionType.START_BILLING_DISABLED);
     }
@@ -379,7 +379,7 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(results.size(), 1);
         assertEquals(results.first().getEffectiveDate(), now);
         assertNull(results.first().getFixedPrice());
-        assertNull(results.first().getRecurringPrice(null));
+        assertNull(results.first().getRecurringPrice());
         assertEquals(results.first().getBillingPeriod(), BillingPeriod.NO_BILLING_PERIOD);
         assertEquals(results.first().getTransitionType(), SubscriptionBaseTransitionType.START_BILLING_DISABLED);
     }
@@ -433,11 +433,11 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(results.size(), 2);
         assertEquals(results.first().getEffectiveDate(), now);
         assertNull(results.first().getFixedPrice());
-        assertNull(results.first().getRecurringPrice(null));
+        assertNull(results.first().getRecurringPrice());
         assertEquals(results.first().getBillingPeriod(), BillingPeriod.NO_BILLING_PERIOD);
         assertEquals(results.first().getTransitionType(), SubscriptionBaseTransitionType.START_BILLING_DISABLED);
         assertEquals(results.last().getEffectiveDate(), now.plusDays(2));
-        assertEquals(results.last().getRecurringPrice(null), billingEvents.first().getRecurringPrice(null));
+        assertEquals(results.last().getRecurringPrice(), billingEvents.first().getRecurringPrice());
         assertEquals(results.last().getTransitionType(), SubscriptionBaseTransitionType.END_BILLING_DISABLED);
     }
 
@@ -458,11 +458,11 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(results.size(), 2);
         assertEquals(results.first().getEffectiveDate(), now);
         assertNull(results.first().getFixedPrice());
-        assertNull(results.first().getRecurringPrice(null));
+        assertNull(results.first().getRecurringPrice());
         assertEquals(results.first().getBillingPeriod(), BillingPeriod.NO_BILLING_PERIOD);
         assertEquals(results.first().getTransitionType(), SubscriptionBaseTransitionType.START_BILLING_DISABLED);
         assertEquals(results.last().getEffectiveDate(), now.plusDays(2));
-        assertEquals(results.last().getRecurringPrice(null), billingEvents.first().getRecurringPrice(null));
+        assertEquals(results.last().getRecurringPrice(), billingEvents.first().getRecurringPrice());
         assertEquals(results.last().getTransitionType(), SubscriptionBaseTransitionType.END_BILLING_DISABLED);
     }
 
@@ -484,11 +484,11 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(results.size(), 2);
         assertEquals(results.first().getEffectiveDate(), now);
         assertNull(results.first().getFixedPrice());
-        assertNull(results.first().getRecurringPrice(null));
+        assertNull(results.first().getRecurringPrice());
         assertEquals(results.first().getBillingPeriod(), BillingPeriod.NO_BILLING_PERIOD);
         assertEquals(results.first().getTransitionType(), SubscriptionBaseTransitionType.START_BILLING_DISABLED);
         assertEquals(results.last().getEffectiveDate(), now.plusDays(2));
-        assertEquals(results.last().getRecurringPrice(null), billingEvents.first().getRecurringPrice(null));
+        assertEquals(results.last().getRecurringPrice(), billingEvents.first().getRecurringPrice());
         assertEquals(results.last().getTransitionType(), SubscriptionBaseTransitionType.END_BILLING_DISABLED);
     }
 
@@ -507,7 +507,7 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
 
         assertEquals(results.size(), 1);
         assertEquals(results.last().getEffectiveDate(), now.plusDays(2));
-        assertEquals(results.last().getRecurringPrice(null), billingEvents.first().getRecurringPrice(null));
+        assertEquals(results.last().getRecurringPrice(), billingEvents.first().getRecurringPrice());
         assertEquals(results.last().getTransitionType(), SubscriptionBaseTransitionType.END_BILLING_DISABLED);
     }
 
@@ -526,7 +526,7 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
 
         assertEquals(results.size(), 1);
         assertEquals(results.last().getEffectiveDate(), now.plusDays(2));
-        assertEquals(results.last().getRecurringPrice(null), billingEvents.first().getRecurringPrice(null));
+        assertEquals(results.last().getRecurringPrice(), billingEvents.first().getRecurringPrice());
         assertEquals(results.last().getTransitionType(), SubscriptionBaseTransitionType.END_BILLING_DISABLED);
     }
 
@@ -566,63 +566,24 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
 
     }
 
-    protected BillingEvent createRealEvent(final DateTime effectiveDate, final SubscriptionBase subscription) {
-        return createRealEvent(effectiveDate, subscription, SubscriptionBaseTransitionType.CHANGE);
-    }
-
-    protected BillingEvent createRealEvent(final DateTime effectiveDate, final SubscriptionBase subscription, final SubscriptionBaseTransitionType type)  {
-        try {
-
-            final Integer billCycleDay = 1;
-            final Plan plan = new MockPlan();
-            final Currency currency = Currency.USD;
-            final String description = "";
-            final BillingPeriod billingPeriod = BillingPeriod.MONTHLY;
-            final Long totalOrdering = 0L;
-            final DateTimeZone tz = DateTimeZone.UTC;
-
-
-            final PlanPhase planPhase = Mockito.mock(PlanPhase.class);
-
-            final InternationalPrice recurringPrice = Mockito.mock(InternationalPrice.class);
-
-            Mockito.when(recurringPrice.getPrice(Mockito.<Currency>any())).thenReturn(BigDecimal.TEN);
-            final Recurring recurring = Mockito.mock(Recurring.class);
-            Mockito.when(recurring.getRecurringPrice()).thenReturn(recurringPrice);
-            Mockito.when(planPhase.getRecurring()).thenReturn(recurring);
-            Mockito.when(planPhase.getUsages()).thenReturn(new DefaultUsage[0]);
-
-            final BigDecimal fixedPrice = BigDecimal.TEN;
-
-            return new DefaultBillingEvent(subscription, effectiveDate, true, plan, planPhase, fixedPrice,
-                                           currency,
-                                           billingPeriod, billCycleDay,
-                                           description, totalOrdering, type, null, false);
-
-        } catch (final CatalogApiException e) {
-            Assert.fail("", e);
-        }
-        throw new IllegalStateException();
-    }
-
     @Test(groups = "fast")
     public void testFilter() {
         final SortedSet<BillingEvent> events = new TreeSet<BillingEvent>();
 
-        events.add(createBillingEvent(subscription1));
-        events.add(createBillingEvent(subscription1));
-        events.add(createBillingEvent(subscription1));
-        events.add(createBillingEvent(subscription2));
+        events.add(createBillingEvent(subscription1, 1L));
+        events.add(createBillingEvent(subscription1, 2L));
+        events.add(createBillingEvent(subscription1, 3L));
+        events.add(createBillingEvent(subscription2, 4L));
 
         final SortedSet<BillingEvent> result1 = blockingCalculator.filter(events, subscription1);
         final SortedSet<BillingEvent> result2 = blockingCalculator.filter(events, subscription2);
         final SortedSet<BillingEvent> result3 = blockingCalculator.filter(events, subscription3);
 
         assertEquals(result1.size(), 3);
-        assertEquals(result1.first().getSubscription(), subscription1);
-        assertEquals(result1.last().getSubscription(), subscription1);
+        assertEquals(((DefaultBillingEvent)(result1.first())).getSubscription(), subscription1);
+        assertEquals(((DefaultBillingEvent)(result1.last())).getSubscription(), subscription1);
         assertEquals(result2.size(), 1);
-        assertEquals(result2.first().getSubscription(), subscription2);
+        assertEquals(((DefaultBillingEvent)(result2.first())).getSubscription(), subscription2);
         assertEquals(result3.size(), 0);
     }
 
@@ -637,7 +598,7 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(result.getPlanPhase(), event.getPlanPhase());
         assertEquals(result.getPlan(), event.getPlan());
         assertNull(result.getFixedPrice());
-        assertNull(result.getRecurringPrice(null));
+        assertNull(result.getRecurringPrice());
         assertEquals(result.getCurrency(), event.getCurrency());
         assertEquals(result.getDescription(), "");
         assertEquals(result.getBillingPeriod(), BillingPeriod.NO_BILLING_PERIOD);
@@ -657,7 +618,7 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(result.getPlanPhase(), event.getPlanPhase());
         assertEquals(result.getPlan(), event.getPlan());
         assertEquals(result.getFixedPrice(), event.getFixedPrice());
-        assertEquals(result.getRecurringPrice(null), event.getRecurringPrice(null));
+        assertEquals(result.getRecurringPrice(), event.getRecurringPrice());
         assertEquals(result.getCurrency(), event.getCurrency());
         assertEquals(result.getDescription(), "");
         assertEquals(result.getBillingPeriod(), event.getBillingPeriod());
@@ -669,18 +630,18 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
     private class MockBillingEvent extends DefaultBillingEvent {
 
         public MockBillingEvent() throws CatalogApiException {
-            super(subscription1, clock.getUTCNow(), true, null, null, BigDecimal.ZERO, Currency.USD, BillingPeriod.ANNUAL,
-                  4, "", 3L, SubscriptionBaseTransitionType.CREATE, null, false);
+            super(subscription1, clock.getUTCNow(), true, null, null, BigDecimal.ZERO, BigDecimal.ZERO, Currency.USD, BillingPeriod.ANNUAL,
+                  4, "", 3L, SubscriptionBaseTransitionType.CREATE, false);
         }
     }
 
     @Test(groups = "fast")
     public void testCreateBundleSubscriptionMap() {
         final SortedSet<BillingEvent> events = new TreeSet<BillingEvent>();
-        events.add(createBillingEvent(subscription1));
-        events.add(createBillingEvent(subscription2));
-        events.add(createBillingEvent(subscription3));
-        events.add(createBillingEvent(subscription4));
+        events.add(createBillingEvent(subscription1, 1L));
+        events.add(createBillingEvent(subscription2, 2L));
+        events.add(createBillingEvent(subscription3, 3L));
+        events.add(createBillingEvent(subscription4, 4L));
 
         final Hashtable<UUID, List<SubscriptionBase>> map = blockingCalculator.createBundleSubscriptionMap(events);
 
@@ -691,12 +652,7 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
 
     }
 
-    private BillingEvent createBillingEvent(final SubscriptionBase subscription) {
-        final BillingEvent result = Mockito.mock(BillingEvent.class);
-        Mockito.when(result.getSubscription()).thenReturn(subscription);
-        Mockito.when(result.compareTo(Mockito.<BillingEvent>any())).thenReturn(1);
-        return result;
-    }
+
 
     @Test(groups = "fast")
     public void testCreateDisablePairs() {
@@ -833,9 +789,9 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
     @Test(groups = "fast")
     public void testSimpleWithClearBlockingDuration() throws Exception {
 
-        final BillingEvent trial = createRealEvent(new LocalDate(2012, 5, 1).toDateTimeAtStartOfDay(DateTimeZone.UTC), subscription1, SubscriptionBaseTransitionType.CREATE);
-        final BillingEvent phase = createRealEvent(new LocalDate(2012, 5, 31).toDateTimeAtStartOfDay(DateTimeZone.UTC), subscription1, SubscriptionBaseTransitionType.PHASE);
-        final BillingEvent upgrade = createRealEvent(new LocalDate(2012, 7, 25).toDateTimeAtStartOfDay(DateTimeZone.UTC), subscription1, SubscriptionBaseTransitionType.CHANGE);
+        final BillingEvent trial = createRealEvent(subscription1, new LocalDate(2012, 5, 1).toDateTimeAtStartOfDay(DateTimeZone.UTC), SubscriptionBaseTransitionType.CREATE);
+        final BillingEvent phase = createRealEvent(subscription1, new LocalDate(2012, 5, 31).toDateTimeAtStartOfDay(DateTimeZone.UTC), SubscriptionBaseTransitionType.PHASE);
+        final BillingEvent upgrade = createRealEvent(subscription1, new LocalDate(2012, 7, 25).toDateTimeAtStartOfDay(DateTimeZone.UTC), SubscriptionBaseTransitionType.CHANGE);
         final SortedSet<BillingEvent> billingEvents = new TreeSet<BillingEvent>();
         billingEvents.add(trial);
         billingEvents.add(phase);
@@ -866,4 +822,60 @@ public class TestBlockingCalculator extends JunctionTestSuiteNoDB {
         assertEquals(events.get(3).getTransitionType(), SubscriptionBaseTransitionType.END_BILLING_DISABLED);
         assertEquals(events.get(4).getEffectiveDate(), new LocalDate(2012, 7, 25).toDateTimeAtStartOfDay(DateTimeZone.UTC));
         assertEquals(events.get(4).getTransitionType(), SubscriptionBaseTransitionType.CHANGE);    }
+
+
+    private BillingEvent createBillingEvent(final SubscriptionBase subscription, final Long totalOrdering) {
+        return createRealEvent( subscription, new DateTime(), SubscriptionBaseTransitionType.CREATE, totalOrdering);
+    }
+
+    protected BillingEvent createRealEvent(final DateTime effectiveDate, final SubscriptionBase subscription) {
+        return createRealEvent(subscription, effectiveDate, SubscriptionBaseTransitionType.CHANGE);
+    }
+
+    protected BillingEvent createRealEvent(final SubscriptionBase subscription, final DateTime effectiveDate, final SubscriptionBaseTransitionType type) {
+        return createRealEvent(subscription, effectiveDate, type, 0L);
+    }
+
+    private BillingEvent createRealEvent(final SubscriptionBase subscription, final DateTime effectiveDate, final SubscriptionBaseTransitionType type, final Long totalOrdering)  {
+        try {
+
+            final Integer billCycleDay = 1;
+            final Plan plan = new MockPlan();
+            final Currency currency = Currency.USD;
+            final String description = "";
+            final BillingPeriod billingPeriod = BillingPeriod.MONTHLY;
+
+            final PlanPhase planPhase = Mockito.mock(PlanPhase.class);
+
+            final InternationalPrice recurringPrice = Mockito.mock(InternationalPrice.class);
+
+            Mockito.when(recurringPrice.getPrice(Mockito.<Currency>any())).thenReturn(BigDecimal.TEN);
+            final Recurring recurring = Mockito.mock(Recurring.class);
+            Mockito.when(recurring.getRecurringPrice()).thenReturn(recurringPrice);
+            Mockito.when(planPhase.getRecurring()).thenReturn(recurring);
+            Mockito.when(planPhase.getUsages()).thenReturn(new DefaultUsage[0]);
+
+            final BigDecimal fixedPrice = BigDecimal.TEN;
+
+            return new DefaultBillingEvent(subscription,
+                                           effectiveDate,
+                                           true,
+                                           plan,
+                                           planPhase,
+                                           fixedPrice,
+                                           BigDecimal.TEN,
+                                           currency,
+                                           billingPeriod,
+                                           billCycleDay,
+                                           description,
+                                           totalOrdering,
+                                           type,
+                                           false);
+
+        } catch (final CatalogApiException e) {
+            Assert.fail("", e);
+        }
+        throw new IllegalStateException();
+    }
+
 }
diff --git a/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestDefaultBillingEvent.java b/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestDefaultBillingEvent.java
index 05ff9dd..8aeab7e 100644
--- a/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestDefaultBillingEvent.java
+++ b/junction/src/test/java/org/killbill/billing/junction/plumbing/billing/TestDefaultBillingEvent.java
@@ -31,7 +31,6 @@ import org.mockito.Mockito;
 import org.testng.Assert;
 import org.testng.annotations.Test;
 
-import org.killbill.billing.account.api.Account;
 import org.killbill.billing.catalog.DefaultPrice;
 import org.killbill.billing.catalog.MockInternationalPrice;
 import org.killbill.billing.catalog.MockPlan;
@@ -44,7 +43,6 @@ import org.killbill.billing.catalog.api.PlanPhase;
 import org.killbill.billing.subscription.api.SubscriptionBaseTransitionType;
 import org.killbill.billing.subscription.api.SubscriptionBase;
 import org.killbill.billing.junction.JunctionTestSuiteNoDB;
-import org.killbill.billing.mock.MockAccountBuilder;
 import org.killbill.billing.junction.BillingEvent;
 
 public class TestDefaultBillingEvent extends JunctionTestSuiteNoDB {
@@ -187,9 +185,9 @@ public class TestDefaultBillingEvent extends JunctionTestSuiteNoDB {
         final PlanPhase shotgunMonthly = createMockMonthlyPlanPhase(null, BigDecimal.ZERO, PhaseType.TRIAL);
 
         return new DefaultBillingEvent(sub, effectiveDate, true,
-                                       shotgun, shotgunMonthly, BigDecimal.ZERO,
+                                       shotgun, shotgunMonthly, BigDecimal.ZERO, BigDecimal.ZERO,
                                        Currency.USD, BillingPeriod.NO_BILLING_PERIOD, billCycleDay,
-                                       "Test Event 1", totalOrdering, type, null, false);
+                                       "Test Event 1", totalOrdering, type, false);
     }
 
     private MockPlanPhase createMockMonthlyPlanPhase(@Nullable final BigDecimal recurringRate,
diff --git a/subscription/src/main/java/org/killbill/billing/subscription/api/svcs/DefaultSubscriptionInternalApi.java b/subscription/src/main/java/org/killbill/billing/subscription/api/svcs/DefaultSubscriptionInternalApi.java
index 0e830df..1fddc01 100644
--- a/subscription/src/main/java/org/killbill/billing/subscription/api/svcs/DefaultSubscriptionInternalApi.java
+++ b/subscription/src/main/java/org/killbill/billing/subscription/api/svcs/DefaultSubscriptionInternalApi.java
@@ -53,6 +53,7 @@ import org.killbill.billing.subscription.api.SubscriptionBaseApiService;
 import org.killbill.billing.subscription.api.SubscriptionBaseInternalApi;
 import org.killbill.billing.subscription.api.SubscriptionBaseWithAddOns;
 import org.killbill.billing.subscription.api.SubscriptionBaseWithAddOnsSpecifier;
+import org.killbill.billing.subscription.api.user.SubscriptionBillingEvent;
 import org.killbill.billing.subscription.api.user.DefaultEffectiveSubscriptionEvent;
 import org.killbill.billing.subscription.api.user.DefaultSubscriptionBase;
 import org.killbill.billing.subscription.api.user.DefaultSubscriptionBaseBundle;
@@ -349,9 +350,8 @@ public class DefaultSubscriptionInternalApi extends DefaultSubscriptionBaseCreat
     }
 
     @Override
-    public List<EffectiveSubscriptionInternalEvent> getBillingTransitions(final SubscriptionBase subscription, final InternalTenantContext context) {
-        final List<SubscriptionBaseTransition> transitions = ((DefaultSubscriptionBase) subscription).getBillingTransitions();
-        return convertEffectiveSubscriptionInternalEventFromSubscriptionTransitions(subscription, context, transitions);
+    public List<SubscriptionBillingEvent> getSubscriptionBillingEvents(final SubscriptionBase subscription, final InternalTenantContext context) {
+        return((DefaultSubscriptionBase) subscription).getBillingTransitions();
     }
 
     @Override
diff --git a/subscription/src/main/java/org/killbill/billing/subscription/api/user/DefaultSubscriptionBase.java b/subscription/src/main/java/org/killbill/billing/subscription/api/user/DefaultSubscriptionBase.java
index fc09a99..4aaf947 100644
--- a/subscription/src/main/java/org/killbill/billing/subscription/api/user/DefaultSubscriptionBase.java
+++ b/subscription/src/main/java/org/killbill/billing/subscription/api/user/DefaultSubscriptionBase.java
@@ -524,26 +524,40 @@ public class DefaultSubscriptionBase extends EntityBase implements SubscriptionB
         return it.hasNext() ? ((SubscriptionBaseTransitionData) it.next()).getTotalOrdering() : -1L;
     }
 
-    public List<SubscriptionBaseTransition> getBillingTransitions() {
+    public List<SubscriptionBillingEvent> getBillingTransitions() {
 
         if (transitions == null) {
             return Collections.emptyList();
         }
-        final List<SubscriptionBaseTransition> result = new ArrayList<SubscriptionBaseTransition>();
+        final List<SubscriptionBillingEvent> result = new ArrayList<SubscriptionBillingEvent>();
         final SubscriptionBaseTransitionDataIterator it = new SubscriptionBaseTransitionDataIterator(
                 clock, transitions, Order.ASC_FROM_PAST,
                 Visibility.ALL, TimeLimit.ALL);
         // Remove anything prior to first CREATE
         boolean foundInitialEvent = false;
+
+        DateTime lastPlanChangeTime = null;
         while (it.hasNext()) {
-            final SubscriptionBaseTransitionData curTransition = (SubscriptionBaseTransitionData) it.next();
+            final SubscriptionBaseTransitionData cur = (SubscriptionBaseTransitionData) it.next();
             if (!foundInitialEvent) {
-                foundInitialEvent = curTransition.getEventType() == EventType.API_USER &&
-                                    (curTransition.getApiEventType() == ApiEventType.CREATE ||
-                                     curTransition.getApiEventType() == ApiEventType.TRANSFER);
+                foundInitialEvent = cur.getEventType() == EventType.API_USER &&
+                                    (cur.getApiEventType() == ApiEventType.CREATE ||
+                                     cur.getApiEventType() == ApiEventType.TRANSFER);
+                lastPlanChangeTime = cur.getEffectiveTransitionTime();
             }
+
             if (foundInitialEvent) {
-                result.add(curTransition);
+
+                if (cur.getEventType() == EventType.API_USER &&
+                                    cur.getApiEventType() == ApiEventType.CHANGE) {
+                    lastPlanChangeTime = cur.getEffectiveTransitionTime();
+                }
+
+                final boolean isActive = cur.getTransitionType() != SubscriptionBaseTransitionType.CANCEL;
+                final String planName = isActive ? cur.getNextPlan().getName() : cur.getPreviousPlan().getName();
+                final String planPhaseName = isActive ?  cur.getNextPhase().getName() : cur.getPreviousPhase().getName();
+                final SubscriptionBillingEvent billingTransition = new DefaultSubscriptionBillingEvent(cur.getTransitionType(), planName, planPhaseName, cur.getEffectiveTransitionTime(), cur.getTotalOrdering(), lastPlanChangeTime, cur.getNextBillingCycleDayLocal());
+                result.add(billingTransition);
             }
         }
         return result;
diff --git a/subscription/src/main/java/org/killbill/billing/subscription/api/user/DefaultSubscriptionBillingEvent.java b/subscription/src/main/java/org/killbill/billing/subscription/api/user/DefaultSubscriptionBillingEvent.java
new file mode 100644
index 0000000..6ae9725
--- /dev/null
+++ b/subscription/src/main/java/org/killbill/billing/subscription/api/user/DefaultSubscriptionBillingEvent.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2014-2019 Groupon, Inc
+ * Copyright 2014-2019 The Billing Project, LLC
+ *
+ * The Billing Project licenses this file to you under the Apache License, version 2.0
+ * (the "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at:
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.killbill.billing.subscription.api.user;
+
+import org.joda.time.DateTime;
+import org.killbill.billing.subscription.api.SubscriptionBaseTransitionType;
+
+public class DefaultSubscriptionBillingEvent implements SubscriptionBillingEvent {
+
+    private final SubscriptionBaseTransitionType type;
+    private final String planName;
+    private final String planPhaseName;
+    private final DateTime effectiveDate;
+    private final Long totalOrdering;
+    private final DateTime lastChangePlanDate;
+    private final Integer bcdLocal;
+
+    public DefaultSubscriptionBillingEvent(final SubscriptionBaseTransitionType type, final String planName, final String planPhaseName, final DateTime effectiveDate, final Long totalOrdering, final DateTime lastChangePlanDate, final Integer bcdLocal) {
+        this.type = type;
+        this.planName = planName;
+        this.planPhaseName = planPhaseName;
+        this.effectiveDate = effectiveDate;
+        this.totalOrdering = totalOrdering;
+        this.lastChangePlanDate = lastChangePlanDate;
+        this.bcdLocal = bcdLocal;
+    }
+
+    @Override
+    public SubscriptionBaseTransitionType getType() {
+        return type;
+    }
+
+    @Override
+    public String getPlanName() {
+        return planName;
+    }
+
+    @Override
+    public String getPlanPhaseName() {
+        return planPhaseName;
+    }
+
+    @Override
+    public DateTime getEffectiveDate() {
+        return effectiveDate;
+    }
+
+    @Override
+    public Long getTotalOrdering() {
+        return totalOrdering;
+    }
+
+    @Override
+    public DateTime getLastChangePlanDate() {
+        return lastChangePlanDate;
+    }
+
+    @Override
+    public Integer getBcdLocal() {
+        return bcdLocal;
+    }
+}