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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.udf;
import  org.apache.hadoop.io.IntWritable;
import  org.apache.hadoop.io.Text;

UDFMinute.
@Description(name = "minute",
    value = "_FUNC_(date) - Returns the minute of date",
    extended = "date is a string in the format of 'yyyy-MM-dd HH:mm:ss' or "
    + "'HH:mm:ss'.\n"
    + "Example:\n "
    + "  > SELECT _FUNC_('2009-07-30 12:58:59') FROM src LIMIT 1;\n"
    + "  58\n"
    + "  > SELECT _FUNC_('12:58:59') FROM src LIMIT 1;\n" + "  58")
public class UDFMinute extends UDF {
  private final SimpleDateFormat formatter1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  private final SimpleDateFormat formatter2 = new SimpleDateFormat("HH:mm:ss");
  private final Calendar calendar = Calendar.getInstance();
  private IntWritable result = new IntWritable();
  public UDFMinute() {
  }

  
Get the minute from a date string.

Parameters:
dateString the dateString in the format of "yyyy-MM-dd HH:mm:ss" or "yyyy-MM-dd".
Returns:
an int from 0 to 59. null if the dateString is not a valid date string.
  public IntWritable evaluate(Text dateString) {
    if (dateString == null) {
      return null;
    }
    try {
      Date date = null;
      try {
        date = .parse(dateString.toString());
      } catch (ParseException e) {
        date = .parse(dateString.toString());
      }
      .setTime(date);
      .set(.get(.));
      return ;
    } catch (ParseException e) {
      return null;
    }
  }
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