Package com.tameif.tame.util

Class PatternCache

java.lang.Object

com.tameif.tame.util.PatternCache

public final class PatternCache
extends java.lang.Object

A caching structure for all RegEx patterns.

RegExs, when compiled into Patterns, can be reused several times. This cache is for automatic building/returning existing patterns by String.

All operations are thread-safe.

Author:

Matthew Tropiano

Method Summary

Modifier and Type	Method and Description
static java.util.regex.Pattern	get(java.lang.String regex) Gets an existing, compiled pattern or a newly-compiled one for the provided expression.

Methods inherited from class java.lang.Object

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

Method Detail

get

public static java.util.regex.Pattern get(java.lang.String regex)

Gets an existing, compiled pattern or a newly-compiled one for the provided expression. Also useful for pre-warming oft-used expressions.

Parameters:

regex - the input RegEx.

Returns:

a newly-compiled Pattern or an existing one.

Throws:

java.util.regex.PatternSyntaxException - if the expression cannot be compiled.