/*
*
* * Copyright 2014 Orient Technologies LTD (info(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.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.orient.core.db.record.ridbag.sbtree;
import com.orientechnologies.orient.core.db.document.ODocumentFieldVisitor;
import com.orientechnologies.orient.core.db.document.ODocumentFieldWalker;
import com.orientechnologies.orient.core.db.record.ORecordOperation;
import com.orientechnologies.orient.core.db.record.ridbag.ORidBag;
import com.orientechnologies.orient.core.exception.OConcurrentModificationException;
import com.orientechnologies.orient.core.exception.OFastConcurrentModificationException;
import com.orientechnologies.orient.core.hook.ODocumentHookAbstract;
import com.orientechnologies.orient.core.metadata.schema.OType;
import com.orientechnologies.orient.core.record.impl.ODocument;
import com.orientechnologies.orient.core.version.ORecordVersion;
public class ORidBagDeleteHook extends ODocumentHookAbstract {
@Override
public DISTRIBUTED_EXECUTION_MODE getDistributedExecutionMode() {
return DISTRIBUTED_EXECUTION_MODE.TARGET_NODE;
}
@Override
public RESULT onRecordBeforeDelete(ODocument document) {
deleteAllRidBags(document);
return RESULT.RECORD_CHANGED;
}
private void deleteAllRidBags(ODocument document) {
final ORecordVersion version = document.getRecordVersion();
if (document.fields() == 0) {
// FORCE LOADING OF CLASS+FIELDS TO USE IT AFTER ON onRecordAfterDelete METHOD
document.reload();
if (version.getCounter() > -1 && document.getRecordVersion().compareTo(version) != 0) // check for record version errors
if (OFastConcurrentModificationException.enabled())
throw OFastConcurrentModificationException.instance();
else
throw new OConcurrentModificationException(document.getIdentity(), document.getRecordVersion(), version,
ORecordOperation.DELETED);
}
final ODocumentFieldWalker documentFieldWalker = new ODocumentFieldWalker();
final RidBagDeleter ridBagDeleter = new RidBagDeleter();
documentFieldWalker.walkDocument(document, ridBagDeleter);
}
private static final class RidBagDeleter implements ODocumentFieldVisitor {
@Override
public Object visitField(OType type, OType linkedType, Object value) {
if (value instanceof ORidBag)
((ORidBag) value).delete();
return value;
}
@Override
public boolean goFurther(OType type, OType linkedType, Object value, Object newValue) {
return true;
}
@Override
public boolean goDeeper(OType type, OType linkedType, Object value) {
return true;
}
@Override
public boolean updateMode() {
return false;
}
}
}