org.apache.hadoop.hive.ql.exec.vector.expressions.CastDateToString Maven / Gradle / Ivy
The newest version!
/**
* 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.ql.exec.vector.BytesColumnVector;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import java.sql.Date;
public class CastDateToString extends LongToStringUnaryUDF {
private static final long serialVersionUID = 1L;
protected transient Date dt = new Date(0);
public CastDateToString() {
super();
}
public CastDateToString(int inputColumn, int outputColumn) {
super(inputColumn, outputColumn);
}
// The assign method will be overridden for CHAR and VARCHAR.
protected void assign(BytesColumnVector outV, int i, byte[] bytes, int length) {
outV.setVal(i, bytes, 0, length);
}
@Override
protected void func(BytesColumnVector outV, long[] vector, int i) {
dt.setTime(DateWritable.daysToMillis((int) vector[i]));
byte[] temp = dt.toString().getBytes();
assign(outV, i, temp, temp.length);
}
}