/*
* 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.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.List;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.phoenix.expression.BaseCompoundExpression;
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 InlineArrayElemRefExpression extends BaseCompoundExpression {
private int index;
public InlineArrayElemRefExpression() {
}
public InlineArrayElemRefExpression(List<Expression> children) {
super(children);
}
public void setIndex(int index) {
this.index = index;
}
@Override
public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
Expression arrayExpr = children.get(0);
return PArrayDataType.positionAtArrayElement(tuple, ptr, index, arrayExpr, getDataType(), getMaxLength());
}
@Override
public Integer getMaxLength() {
return this.children.get(0).getMaxLength();
}
@Override
public PDataType getDataType() {
return PDataType.fromTypeId(children.get(0).getDataType().getSqlType() - PDataType.ARRAY_TYPE_BASE);
}
@Override
public void write(DataOutput output) throws IOException {
super.write(output);
}
@Override
public void readFields(DataInput input) throws IOException {
super.readFields(input);
}
}