org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpressionWriter Maven / Gradle / Ivy
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/**
* 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.hadoop.hive.ql.exec.vector.expressions;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.ql.exec.vector.ColumnVector;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.io.Writable;
/**
* Interface used to create Writable objects from vector expression primitives.
*
*/
public interface VectorExpressionWriter {
ObjectInspector getObjectInspector();
Object writeValue(ColumnVector column, int row) throws HiveException;
Object writeValue(long value) throws HiveException;
Object writeValue(double value) throws HiveException;
Object writeValue(byte[] value, int start, int length) throws HiveException;
Object writeValue(HiveDecimalWritable value) throws HiveException;
Object writeValue(HiveDecimal value) throws HiveException;
Object setValue(Object row, ColumnVector column, int columnRow) throws HiveException;
Object initValue(Object ost) throws HiveException;
}