/**
* 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.pig.builtin;
import java.io.IOException;
import org.apache.pig.EvalFunc;
import org.apache.pig.data.DataType;
import org.apache.pig.data.Tuple;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
/**
* This method should never be used directly, use {@link ToDate}.
*/
public class ToDate3ARGS extends EvalFunc<DateTime> {
public DateTime exec(Tuple input) throws IOException {
if (input == null || input.size() < 1 || input.get(0) == null) {
return null;
}
DateTimeFormatter dtf = DateTimeFormat.forPattern(DataType
.toString(input.get(1)));
DateTimeZone dtz = DateTimeZone.forOffsetMillis(DateTimeZone.forID(
DataType.toString(input.get(2))).getOffset(null));
return dtf.withZone(dtz).parseDateTime(DataType.toString(input.get(0)));
}
@Override
public boolean allowCompileTimeCalculation() {
return true;
}
}