[GROOVY-4714] @EqualsAndHashCode should allow caching of hashCode values

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8-rc-1
• Fix Version/s: 2.1.0-rc-2, 2.1.0
• Assignee: Paul King
• Reporter: Travis Schneeberger
• Created: 07/Mar/11 10:49
• Updated: 18/Jan/13 16:06
• Resolved: 17/Jan/13 16:56

Description

NOTE: @ToString moved to linked issue

For an immutable object, a hashcode value & toString value only need to be computed once and cached. Then the hashcode and toString methods can just return the cached values.

The @ToString and @EqualsAndHashCode ast transformation should have options to allow for caching. For example:

@ToString(cache=true)
@EqualsAndHashCode(cache=true)

Also, the @Immutable annotation should use the @ToString and @EqualsAndHashCode transformation with this caching capability enabled.

Issue Links

• relates to: GROOVY-5928 @ToString should allow caching of toString values