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Cayenne Object Persistence Framework
/*****************************************************************
* 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.event;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import org.apache.cayenne.event.CayenneEvent;
/**
* Event sent on modification of the DataRowStore.
*
* @since 1.1
* @author Andrei Adamchik
*/
public class SnapshotEvent extends CayenneEvent {
protected long timestamp;
protected Collection deletedIds;
protected Collection invalidatedIds;
protected Map modifiedDiffs;
protected Collection indirectlyModifiedIds;
/**
* @deprecated since 1.2
*/
public SnapshotEvent(Object source, Object postedBy, Map modifiedDiffs,
Collection deletedIds, Collection indirectlyModifiedIds) {
this(
source,
postedBy,
modifiedDiffs,
deletedIds,
Collections.EMPTY_LIST,
indirectlyModifiedIds);
}
public SnapshotEvent(Object source, Object postedBy, Map modifiedDiffs,
Collection deletedIds, Collection invalidatedIds,
Collection indirectlyModifiedIds) {
super(source, postedBy, null);
this.timestamp = System.currentTimeMillis();
this.modifiedDiffs = modifiedDiffs;
this.deletedIds = deletedIds;
this.invalidatedIds = invalidatedIds;
this.indirectlyModifiedIds = indirectlyModifiedIds;
}
public long getTimestamp() {
return timestamp;
}
public Map getModifiedDiffs() {
return (modifiedDiffs != null) ? modifiedDiffs : Collections.EMPTY_MAP;
}
public Collection getDeletedIds() {
return (deletedIds != null) ? deletedIds : Collections.EMPTY_LIST;
}
public Collection getInvalidatedIds() {
return (invalidatedIds != null) ? invalidatedIds : Collections.EMPTY_LIST;
}
public Collection getIndirectlyModifiedIds() {
return (indirectlyModifiedIds != null)
? indirectlyModifiedIds
: Collections.EMPTY_LIST;
}
public String toString() {
StringBuffer buffer = new StringBuffer();
buffer.append("[SnapshotEvent] source: ").append(getSource());
Map modified = getModifiedDiffs();
if (!modified.isEmpty()) {
buffer.append(", modified ").append(modified.size()).append(" id(s)");
}
Collection deleted = getDeletedIds();
if (!deleted.isEmpty()) {
buffer.append(", deleted ").append(deleted.size()).append(" id(s)");
}
Collection invalidated = getInvalidatedIds();
if (!invalidated.isEmpty()) {
buffer.append(", invalidated ").append(invalidated.size()).append(" id(s)");
}
Collection related = getIndirectlyModifiedIds();
if (!related.isEmpty()) {
buffer.append(", indirectly modified ").append(related.size()).append(
" id(s)");
}
return buffer.toString();
}
}
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