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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.ql.exec.vector.BytesColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.VectorExpressionDescriptor;
import org.apache.hadoop.hive.serde2.io.DateWritable;
import java.io.UnsupportedEncodingException;
import java.sql.Date;
import java.text.SimpleDateFormat;
public class VectorUDFDateLong extends LongToStringUnaryUDF {
private static final long serialVersionUID = 1L;
private transient SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
private transient Date date = new Date(0);
public VectorUDFDateLong() {
super();
}
public VectorUDFDateLong(int inputColumn, int outputColumn) {
super(inputColumn, outputColumn);
}
@Override
protected void func(BytesColumnVector outV, long[] vector, int i) {
switch (inputTypes[0]) {
case DATE:
date.setTime(DateWritable.daysToMillis((int) vector[i]));
break;
case TIMESTAMP:
date.setTime(vector[i] / 1000000);
break;
default:
throw new Error("Unsupported input type " + inputTypes[0].name());
}
try {
byte[] bytes = formatter.format(date).getBytes("UTF-8");
outV.setRef(i, bytes, 0, bytes.length);
} catch (UnsupportedEncodingException e) {
outV.vector[i] = null;
outV.isNull[i] = true;
}
}
@Override
public VectorExpressionDescriptor.Descriptor getDescriptor() {
VectorExpressionDescriptor.Builder b = new VectorExpressionDescriptor.Builder();
b.setMode(VectorExpressionDescriptor.Mode.PROJECTION)
.setNumArguments(1)
.setArgumentTypes(
VectorExpressionDescriptor.ArgumentType.DATETIME_FAMILY)
.setInputExpressionTypes(
VectorExpressionDescriptor.InputExpressionType.COLUMN);
return b.build();
}
}