/*
* Copyright 1999-2010 Luca Garulli (l.garulli--at--orientechnologies.com)
*
* 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 com.orientechnologies.orient.core.index;
import java.util.Set;
import com.orientechnologies.common.log.OLogManager;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.db.record.ORecordLazySet;
/**
* Abstract unique index class.
*
* @author Luca Garulli
*
*/
public class OIndexUnique extends OIndexMVRBTreeAbstract {
public OIndexUnique() {
super("UNIQUE");
}
public OIndex put(final Object iKey, final OIdentifiable iSingleValue) {
checkForOptimization();
acquireExclusiveLock();
try {
checkForKeyType(iKey);
Set<OIdentifiable> values = map.get(iKey);
checkForOptimization();
if (values == null)
values = new ORecordLazySet(configuration.getDatabase()).setRidOnly(true).setRidOnly(true);
else if (values.size() == 1) {
// CHECK IF THE ID IS THE SAME OF CURRENT: THIS IS THE UPDATE CASE
if (!values.contains(iSingleValue))
throw new OIndexException("Found duplicated key '" + iKey + "' on unique index '" + name + "' for record "
+ iSingleValue.getIdentity() + ". The record already present in the index is "
+ values.iterator().next().getIdentity());
else
return this;
} else if (values.size() > 1)
throw new OIndexException("Found duplicated key '" + iKey + "' on unique index '" + name + "' for record "
+ iSingleValue.getIdentity() + ". The record already present in the index are " + values);
values.add(iSingleValue);
map.put(iKey, values);
return this;
} finally {
releaseExclusiveLock();
}
}
@Override
public void checkEntry(final OIdentifiable iRecord, final Object iKey) {
// CHECK IF ALREADY EXIST
Set<OIdentifiable> indexedRIDs = get(iKey);
if (indexedRIDs != null && !indexedRIDs.isEmpty()) {
if (!indexedRIDs.contains(iRecord))
OLogManager.instance().exception("Found duplicated key '%s' previously assigned to the record %s", null,
OIndexException.class, iKey, indexedRIDs.iterator().next());
}
}
}