Consider caching the compiled pattern in OperatorMatches [SPR-12610]

[spring-projects-issues]

Gary Russell opened SPR-12610 and commented

OperatorMatches invokes Pattern.compile() on the right operand on every invocation. This could be relatively expensive, especially with a complex regex, even with compiled SpEL.

In many cases, the regex will be a literal.

Consider caching (at least) the most recent compiled Pattern and reuse it if the right operand matches.

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Affects: 4.1.4

Reference URL: http://stackoverflow.com/questions/19742528/spel-how-does-matches-work

Referenced from: commits d34402d, 87b7cd6

[spring-projects-issues]

Juergen Hoeller commented

Good point! We're caching all compiled patterns for each given 'matches' expression now.

Juergen