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* 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
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package org.apache.cayenne.access;
import java.util.Map;
import org.apache.cayenne.DataRow;
import org.apache.cayenne.ObjectId;
import org.apache.cayenne.Persistent;
import org.apache.cayenne.reflect.ClassDescriptor;
/**
* @since 4.0
*/
class PrefetchObjectResolver extends ObjectResolver {
private Map<ObjectId, Persistent> seen;
PrefetchObjectResolver(DataContext context, ClassDescriptor descriptor, boolean refresh,
Map<ObjectId, Persistent> seen) {
super(context, descriptor, refresh);
this.seen = seen;
}
@Override
Persistent objectFromDataRow(DataRow row, ObjectId anId, ClassDescriptor classDescriptor) {
// skip processing of objects that were already processed in this
// transaction, either by this node or by some other node...
// added per CAY-1695 ..
Persistent object = seen.get(anId);
if (object == null) {
object = super.objectFromDataRow(row, anId, classDescriptor);
seen.put(anId, object);
}
return object;
}
}