thingsboard-memoizeit

diff --git a/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewService.java b/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewService.java
new file mode 100644
index 0000000..f4e1700
--- /dev/null
+++ b/dao/src/main/java/org/thingsboard/server/dao/entityview/EntityViewService.java
@@ -0,0 +1,31 @@
+package org.thingsboard.server.dao.entityview;
+
+import org.thingsboard.server.common.data.EntityView;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.EntityViewId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.page.TextPageData;
+import org.thingsboard.server.common.data.page.TextPageLink;
+
+public interface EntityViewService {
+    EntityView findEntityViewById(EntityViewId entityViewId);
+
+
+    EntityView findEntityViewByTenantIdAndName(TenantId tenantId, String name);
+
+    EntityView saveEntityView(EntityView entityView);
+
+    EntityView assignEntityViewToCustomer(EntityViewId entityViewId, CustomerId customerId);
+
+    void deleteEntityView(EntityViewId entityViewId);
+
+    TextPageData<EntityView> findEntityViewByTenantId(TenantId tenantId, TextPageLink pageLink);
+
+    TextPageData<EntityView> findEntityViewByTenantIdAndType(TenantId tenantId, String type, TextPageLink pageLink);
+
+    void deleteEntityViewByTenantId(TenantId tenantId);
+
+    TextPageData<EntityView> findEntityViewByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink);
+
+    TextPageData<EntityView> findEntityViewByTenantIdAndCustomerIdAndType(TenantId tenantId, CustomerId customerId, String type, TextPageLink pageLink);
+}