/*
* 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.phoenix.expression.function;
import java.util.List;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.phoenix.expression.BaseCompoundExpression;
import org.apache.phoenix.expression.ComparisonExpression;
import org.apache.phoenix.expression.Expression;
import org.apache.phoenix.schema.PArrayDataType;
import org.apache.phoenix.schema.PDataType;
import org.apache.phoenix.schema.tuple.Tuple;
public class ArrayAnyComparisonExpression extends BaseCompoundExpression {
public ArrayAnyComparisonExpression () {
}
public ArrayAnyComparisonExpression(List<Expression> children) {
super(children);
}
@Override
public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
Expression arrayKVExpression = children.get(0);
if (!arrayKVExpression.evaluate(tuple, ptr)) {
return false;
} else if (ptr.getLength() == 0) { return true; }
int length = PArrayDataType.getArrayLength(ptr,
PDataType.fromTypeId(children.get(0).getDataType().getSqlType() - PDataType.ARRAY_TYPE_BASE),
arrayKVExpression.getMaxLength());
boolean elementAvailable = false;
for (int i = 0; i < length; i++) {
Expression comparisonExpr = children.get(1);
Expression arrayElemRef = ((ComparisonExpression)comparisonExpr).getChildren().get(1);
((InlineArrayElemRefExpression)arrayElemRef).setIndex(i + 1);
comparisonExpr.evaluate(tuple, ptr);
if (expectedReturnResult(resultFound(ptr))) { return result(); }
elementAvailable = true;
}
if (!elementAvailable) { return false; }
return true;
}
protected boolean resultFound(ImmutableBytesWritable ptr) {
if(Bytes.equals(ptr.get(), PDataType.TRUE_BYTES)) {
return true;
}
return false;
}
protected boolean result() {
return true;
}
protected boolean expectedReturnResult(boolean result) {
return true == result;
}
@Override
public PDataType getDataType() {
return PDataType.BOOLEAN;
}
}