/*
*
* * 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.sql.operator;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import com.orientechnologies.common.exception.OException;
import com.orientechnologies.orient.core.command.OCommandContext;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.db.record.ORecordElement;
import com.orientechnologies.orient.core.exception.ORecordNotFoundException;
import com.orientechnologies.orient.core.id.ORID;
import com.orientechnologies.orient.core.index.OCompositeIndexDefinition;
import com.orientechnologies.orient.core.index.OIndex;
import com.orientechnologies.orient.core.index.OIndexCursor;
import com.orientechnologies.orient.core.index.OIndexCursorCollectionValue;
import com.orientechnologies.orient.core.index.OIndexCursorSingleValue;
import com.orientechnologies.orient.core.index.OIndexDefinition;
import com.orientechnologies.orient.core.index.OIndexDefinitionMultiValue;
import com.orientechnologies.orient.core.index.OIndexInternal;
import com.orientechnologies.orient.core.index.OPropertyMapIndexDefinition;
import com.orientechnologies.orient.core.record.ORecord;
import com.orientechnologies.orient.core.record.impl.ODocument;
import com.orientechnologies.orient.core.sql.filter.OSQLFilterCondition;
/**
* CONTAINS KEY operator.
*
* @author Luca Garulli
*
*/
public class OQueryOperatorContainsValue extends OQueryOperatorEqualityNotNulls {
public OQueryOperatorContainsValue() {
super("CONTAINSVALUE", 5, false);
}
@Override
public OIndexReuseType getIndexReuseType(final Object iLeft, final Object iRight) {
if (!(iRight instanceof OSQLFilterCondition) && !(iLeft instanceof OSQLFilterCondition))
return OIndexReuseType.INDEX_METHOD;
return OIndexReuseType.NO_INDEX;
}
@Override
public OIndexCursor executeIndexQuery(OCommandContext iContext, OIndex<?> index, List<Object> keyParams, boolean ascSortOrder) {
final OIndexDefinition indexDefinition = index.getDefinition();
final OIndexInternal<?> internalIndex = index.getInternal();
OIndexCursor cursor;
if (!internalIndex.canBeUsedInEqualityOperators())
return null;
if (indexDefinition.getParamCount() == 1) {
if (!((indexDefinition instanceof OPropertyMapIndexDefinition) && ((OPropertyMapIndexDefinition) indexDefinition)
.getIndexBy() == OPropertyMapIndexDefinition.INDEX_BY.VALUE))
return null;
final Object key = ((OIndexDefinitionMultiValue) indexDefinition).createSingleValue(keyParams.get(0));
if (key == null)
return null;
final Object indexResult = index.get(key);
if (indexResult == null || indexResult instanceof OIdentifiable)
cursor = new OIndexCursorSingleValue((OIdentifiable) indexResult, key);
else
cursor = new OIndexCursorCollectionValue(((Collection<OIdentifiable>) indexResult).iterator(), key);
} else {
// in case of composite keys several items can be returned in case of we perform search
// using part of composite key stored in index.
final OCompositeIndexDefinition compositeIndexDefinition = (OCompositeIndexDefinition) indexDefinition;
if (!((compositeIndexDefinition.getMultiValueDefinition() instanceof OPropertyMapIndexDefinition) && ((OPropertyMapIndexDefinition) compositeIndexDefinition
.getMultiValueDefinition()).getIndexBy() == OPropertyMapIndexDefinition.INDEX_BY.VALUE))
return null;
final Object keyOne = compositeIndexDefinition.createSingleValue(keyParams);
if (keyOne == null)
return null;
if (internalIndex.hasRangeQuerySupport()) {
final Object keyTwo = compositeIndexDefinition.createSingleValue(keyParams);
cursor = index.iterateEntriesBetween(keyOne, true, keyTwo, true, ascSortOrder);
} else {
if (indexDefinition.getParamCount() == keyParams.size()) {
final Object indexResult = index.get(keyOne);
if (indexResult == null || indexResult instanceof OIdentifiable)
cursor = new OIndexCursorSingleValue((OIdentifiable) indexResult, keyOne);
else
cursor = new OIndexCursorCollectionValue(((Collection<OIdentifiable>) indexResult).iterator(), keyOne);
} else
return null;
}
}
updateProfiler(iContext, index, keyParams, indexDefinition);
return cursor;
}
@Override
public ORID getBeginRidRange(Object iLeft, Object iRight) {
return null;
}
@Override
public ORID getEndRidRange(Object iLeft, Object iRight) {
return null;
}
@Override
@SuppressWarnings("unchecked")
protected boolean evaluateExpression(final OIdentifiable iRecord, final OSQLFilterCondition iCondition, final Object iLeft,
final Object iRight, OCommandContext iContext) {
final OSQLFilterCondition condition;
if (iCondition.getLeft() instanceof OSQLFilterCondition)
condition = (OSQLFilterCondition) iCondition.getLeft();
else if (iCondition.getRight() instanceof OSQLFilterCondition)
condition = (OSQLFilterCondition) iCondition.getRight();
else
condition = null;
if (iLeft instanceof Map<?, ?>) {
final Map<String, ?> map = (Map<String, ?>) iLeft;
if (condition != null) {
// CHECK AGAINST A CONDITION
for (Object o : map.values()) {
o = loadIfNeed(o);
if ((Boolean) condition.evaluate((ODocument) o, null, iContext))
return true;
}
} else
return map.containsValue(iRight);
} else if (iRight instanceof Map<?, ?>) {
final Map<String, ?> map = (Map<String, ?>) iRight;
if (condition != null)
// CHECK AGAINST A CONDITION
for (Object o : map.values()) {
o = loadIfNeed(o);
if ((Boolean) condition.evaluate((ODocument) o, null, iContext))
return true;
else
return map.containsValue(iLeft);
}
}
return false;
}
@SuppressWarnings({ "unchecked", "rawtypes" })
private Object loadIfNeed(Object o) {
final ORecord record = (ORecord) o;
if (record.getRecord().getInternalStatus() == ORecordElement.STATUS.NOT_LOADED) {
try {
o = record.<ORecord> load();
} catch (ORecordNotFoundException e) {
throw new OException("Error during loading record with id : " + record.getIdentity());
}
}
return o;
}
}