/**
 * Copyright © 2016-2017 The Thingsboard Authors
 *
 * Licensed 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.thingsboard.server.dao.relation;

import com.google.common.util.concurrent.ListenableFuture;
import org.thingsboard.server.common.data.id.EntityId;
import org.thingsboard.server.common.data.relation.EntityRelation;

import java.util.List;

/**
 * Created by ashvayka on 27.04.17.
 */
public interface RelationService {

    ListenableFuture<Boolean> checkRelation(EntityId from, EntityId to, String relationType);

    ListenableFuture<Boolean> saveRelation(EntityRelation relation);

    ListenableFuture<Boolean> deleteRelation(EntityRelation relation);

    ListenableFuture<Boolean> deleteRelation(EntityId from, EntityId to, String relationType);

    ListenableFuture<Boolean> deleteEntityRelations(EntityId entity);

    ListenableFuture<List<EntityRelation>> findByFrom(EntityId from);

    ListenableFuture<List<EntityRelation>> findByFromAndType(EntityId from, String relationType);

    ListenableFuture<List<EntityRelation>> findByTo(EntityId to);

    ListenableFuture<List<EntityRelation>> findByToAndType(EntityId to, String relationType);

    ListenableFuture<List<EntityRelation>> findByQuery(EntityRelationsQuery query);

//    TODO: This method may be useful for some validations in the future
//    ListenableFuture<Boolean> checkRecursiveRelation(EntityId from, EntityId to);

}
