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| <?xml version="1.0" encoding="ISO-8859-1"?> | ||
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| <document> | ||
| <properties> | ||
| <title>Java date and time API - Upgrade from 2.2 to 2.3</title> | ||
| <author>Stephen Colebourne</author> | ||
| </properties> | ||
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| <body> | ||
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| <section name="Upgrade"> | ||
| <p> | ||
| These are the release notes and advice for upgrading Joda-Time from version 2.3 to version 2.4. | ||
| <source> | ||
| Joda-Time version 2.4 | ||
| --------------------- | ||
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| Joda-Time is a date and time handling library that seeks to replace the JDK | ||
| Date and Calendar classes. | ||
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| This release contains enhancements, bug fixes and a time zone update. | ||
| The release runs on JDK 5 or later. | ||
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| Joda-Time is licensed under the business-friendly Apache License Version 2. | ||
| This is the same license as all of Apache, plus other open source projects such as Spring. | ||
| The intent is to make the code available to the Java community with the minimum | ||
| of restrictions. If the license causes you problems please contact the mailing list. | ||
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| ** Please also check out our related projects ** | ||
| ** http://www.joda.org/joda-time/related.html ** | ||
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| Enhancements since 2.3 | ||
| ---------------------- | ||
| - Duration.multipliedBy(), .dividedBy(), .negated() | ||
| Additional methods on Duration | ||
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| - LocalDate.hashCode() | ||
| Remove unnecessary volatile on instance variable [#68] | ||
| LocalDate hash code meets criteria of the racy single-check idiom | ||
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| - DateTimeParserBucket | ||
| Allow bucket to be re-used on a single thread [#111] | ||
| Potential for performance improvements due to lower garbage churn | ||
| Improvement only of interest to applications willing to write specialist code | ||
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| - Support CharSequence throughout parsing | ||
| Ensure that CharSequence can be used in parsing [#111] | ||
| This can only be accessed by creating a mutable DateTimeParserBucket | ||
| The bucket is a low-level construct for advanced use cases | ||
| Potential for performance improvements due to lower garbage churn | ||
| No API change | ||
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| - Support Appendable throughout printing | ||
| Ensure that Appendable can be used efficiently in printing [#120, #121, #122] | ||
| No API change | ||
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| - Increased performance of chronology lookup [#126,#105] | ||
| No API change | ||
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| - Increased performance of formatter lookup [#127,#129] | ||
| No API change | ||
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| - Increased performance of symbols lookup [#143] | ||
| No API change | ||
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| Compatibility with 2.3 | ||
| ---------------------- | ||
| Build system - Yes | ||
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| Binary compatible - Yes | ||
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| Source compatible - Yes | ||
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| Serialization compatible - Yes | ||
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| Data compatible - Yes, except | ||
| - DateTimeZone data updated to version 2014e | ||
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| Semantic compatible - Yes, except | ||
| - DateTimeField duration fields have been fixed | ||
| For example, yearOfEra() now has a range of eras() rather than null | ||
| The DurationField instances now compare using equals() correctly | ||
| - MutableDateTime.add(DateTimeFieldType,int), addDays(int) and friends [#77] | ||
| Adding zero will no longer change the offset during DST overlap in autumn/fall | ||
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| Deprecations since 2.3 | ||
| ---------------------- | ||
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| Bug fixes since 2.3 | ||
| ------------------- | ||
| - DateTimeField.getDurationField() / DateTimeField.getRangeDurationField() [#92,#93,#95] | ||
| Previously some of the complex cases were wrong, notably around centuries and eras | ||
| For example, yearOfEra() returned a range of null when it should be eras() | ||
| A slew of tests were added and a variety of bugs fixed | ||
| This affects DateTimeField.getDurationField() and DateTimeField.getRangeDurationField() | ||
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| - Fixed another edge case in conversion from Local to UTC [#76] | ||
| The DateTimeZone.getOffsetFromLocal() method was fixed to handle the last cutover | ||
| in DST history correctly. | ||
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| - Period construction during DST overlap [#156] | ||
| When creating a period, if one end is within a DST overlap and one beyond the overlap | ||
| then the calculated period was incorrect. | ||
| The calculation has been changed no ensure no extra hour is added. | ||
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| - DateTimeUtils.isContiguous(ReadablePartial) [#89] | ||
| The isContiguous() method could throw a NullPointerException when evaluating weird partials | ||
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| - Period.normalizedStandard(PeriodType) [#79] | ||
| Fix handling of PeriodType when either years or months missing | ||
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| - Partial.with(DateTimeFieldType,int) [#88] | ||
| Validation in this method was not as thorough as that in the constructor | ||
| This allowed invalid partials to be created | ||
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| - MutableDateTime.add(DateTimeFieldType,int), addDays(int) and friends [#77] | ||
| Adding zero to a MutableDateTime used to change the offset during DST overlap in autumn/fall | ||
| This is now fixed to not change the offset | ||
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| - DateTime/MutableDateTime constructors taking millis now validate [#100] | ||
| Previously, new DateTime(Long.MAX_VALUE) would be accepted, now it will be rejected | ||
| This ensures that the maximum/minimum year are respected | ||
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| - Ensure isLeap() returns correct result for day fields [#110] | ||
| Day-of-month and day-of-year fields should report leap days | ||
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| - Insist that year > weekyear when creating Partial [#96,#98] | ||
| As these compare equal code previously allowed either order | ||
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| - Handle weird TimeZone implementations with null ID [#133] | ||
| Calling DateTimeZone.forTimeZone() would break if the ID was null | ||
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| - Handle broken Android implementations better [#103] | ||
| Apparently some Android implementations throw ClassCastException when comparing different types | ||
| Thats dumb and wrong but the change to handle it is harmless | ||
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| - Better concurrency in parsing [#101] | ||
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| - Better Javadoc for parsing of numbers in format patterns [#60] | ||
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| - Remove uncaughtException calls [#59] | ||
| Previously the code called ThreadGroup.uncaughtException() which was invalid | ||
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| - Fix Javadoc for ReadableDuration [#137] | ||
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| - Fix the links to the IANA time zone database [#83] | ||
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| - Better Javadoc for thread saefty of DateTimeUtils [#67] | ||
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| - Better Javadoc for DateTimeComparator [#73] | ||
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| - Better Javadoc for DateTimeFormatter parsing [#78] | ||
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| - Better Javadoc for DateTimeFormat fraction of second [#62] | ||
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| - Better Javadoc for DateTime toString and parse [#142] | ||
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| - Better Javadoc for formatters that only parse [#97] | ||
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| Scala | ||
| -------- | ||
| Joda-Time uses annotations from Joda-Convert. | ||
| In the Java programming language, this dependency is optional, however in Scala it is not. | ||
| Scala users must manually add the Joda-Convert v1.2 dependency. | ||
| </source> | ||
| </p> | ||
| </section> | ||
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| </body> | ||
| </document> |