/*****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.cayenne.access;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.query.DeleteBatchQuery;
import org.apache.cayenne.query.InsertBatchQuery;
import org.apache.cayenne.query.Query;
/**
* A sync bucket that holds flattened queries.
*
* @since 1.2
*/
class DataDomainFlattenedBucket {
final DataDomainFlushAction parent;
final Map<DbEntity, InsertBatchQuery> flattenedInsertQueries;
final Map<DbEntity, DeleteBatchQuery> flattenedDeleteQueries;
DataDomainFlattenedBucket(DataDomainFlushAction parent) {
this.parent = parent;
this.flattenedInsertQueries = new HashMap<DbEntity, InsertBatchQuery>();
this.flattenedDeleteQueries = new HashMap<DbEntity, DeleteBatchQuery>();
}
boolean isEmpty() {
return flattenedInsertQueries.isEmpty() && flattenedDeleteQueries.isEmpty();
}
void addFlattenedInsert(DbEntity flattenedEntity, FlattenedArcKey flattenedArcKey) {
InsertBatchQuery relationInsertQuery = flattenedInsertQueries
.get(flattenedEntity);
if (relationInsertQuery == null) {
relationInsertQuery = new InsertBatchQuery(flattenedEntity, 50);
flattenedInsertQueries.put(flattenedEntity, relationInsertQuery);
}
DataNode node = parent.getDomain().lookupDataNode(flattenedEntity.getDataMap());
Map flattenedSnapshot = flattenedArcKey.buildJoinSnapshotForInsert(node);
relationInsertQuery.add(flattenedSnapshot);
}
void addFlattenedDelete(DbEntity flattenedEntity, FlattenedArcKey flattenedDeleteInfo) {
DeleteBatchQuery relationDeleteQuery = flattenedDeleteQueries
.get(flattenedEntity);
if (relationDeleteQuery == null) {
boolean optimisticLocking = false;
relationDeleteQuery = new DeleteBatchQuery(flattenedEntity, 50);
relationDeleteQuery.setUsingOptimisticLocking(optimisticLocking);
flattenedDeleteQueries.put(flattenedEntity, relationDeleteQuery);
}
DataNode node = parent.getDomain().lookupDataNode(flattenedEntity.getDataMap());
List flattenedSnapshots = flattenedDeleteInfo.buildJoinSnapshotsForDelete(node);
if (!flattenedSnapshots.isEmpty()) {
Iterator snapsIt = flattenedSnapshots.iterator();
while (snapsIt.hasNext()) {
relationDeleteQuery.add((Map) snapsIt.next());
}
}
}
void appendInserts(Collection<Query> queries) {
if (!flattenedInsertQueries.isEmpty()) {
queries.addAll(flattenedInsertQueries.values());
}
}
void appendDeletes(Collection<Query> queries) {
if (!flattenedDeleteQueries.isEmpty()) {
queries.addAll(flattenedDeleteQueries.values());
}
}
}