[XMLBEANS-20] JDK 1.3.1 backport: 1.4 Collections classes should be replaced with 1.3-compliant versions

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Version 1
• Fix Version/s: Version 1.0.3 (jdk1.3 port)
• Assignee: Unassigned
• Reporter: Matt Bishop
• Created: 10/Feb/04 01:46
• Updated: 15/Jul/04 21:44
• Resolved: 15/Jul/04 21:44

Description

After looking at various implementations of the 1.4 Collections classes, it looks like jakarta commons-collections has the most going for it--same functionality, well-tested, compatible license.

The downside is the extra jar--there were too many dependencies to rip out just the classes we need, it quickly lost it's value. The jar itself is 508k.

This is the gist of the changes:

• • java.util.IdentityHashMap -> collections.IdentityMap - Same functionality, both for keys and values wrt equality testing. Same perf.

• • java.util.LinkedHashMap -> collections.LinkedMap - Same functionality and perf.

• • java.util.LinkedHashSet -> collections.ListOrderedSet.decorate(new HashSet) - Same functionality and perf.

collections.jar/license.txt live in external/lib and are moved to build/ar/ during the build and dist processes.