org.apache.pig.piggybank.evaluation.datetime.truncate
Class ISOHelper

java.lang.Object
  org.apache.pig.piggybank.evaluation.datetime.truncate.ISOHelper

public class ISOHelper
extends Object

ISOHelper provides helper methods for the other classes in this package.

• Jodatime: http://joda-time.sourceforge.net/
• ISO8601 Date Format: http://en.wikipedia.org/wiki/ISO_8601

This class is public so that it can be tested in TestTruncateDateTime. Otherwise, it would have "package" visibility.

Field Summary

static org.joda.time.DateTimeZone

DEFAULT_DATE_TIME_ZONE Default time zone for use in parsing, regardless of System or JDK's default time zone.

Constructor Summary

ISOHelper()

Method Summary

static org.joda.time.DateTime

parseDateTime(Tuple input)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_DATE_TIME_ZONE

public static final org.joda.time.DateTimeZone DEFAULT_DATE_TIME_ZONE

Default time zone for use in parsing, regardless of System or JDK's default time zone.

Constructor Detail

ISOHelper

public ISOHelper()

Method Detail

parseDateTime

public static org.joda.time.DateTime parseDateTime(Tuple input)
                                            throws ExecException

Parameters:

input - a non-null, non-empty Tuple, whose first element is a ISO 8601 string representation of a date, time, or dateTime; with optional time zone.

Returns:

a DateTime representing the date, with DateTimeZone set to the time zone parsed from the string, or else DateTimeZone.defaultTimeZone() if one is set, or else UTC.

Throws:

ExecException - if input is a malformed or empty tuple. This method is public so that it can be tested in TestTruncateDateTime. Otherwise, it would have "package" visibility.