org.apache.oro.text

Class PatternCacheLRU

Implemented Interfaces:
PatternCache

public final class PatternCacheLRU
extends GenericPatternCache

This class is a GenericPatternCache subclass implementing an LRU (Least Recently Used) cache replacement policy. In other words, patterns are added to the cache until it becomes full. Once the cache is full, when a new pattern is added to the cache, it replaces the least recently used pattern currently in the cache. This is probably the best general purpose pattern cache replacement policy.
Version:
2.0.8
Since:
1.0
See Also:
GenericPatternCache

Field Summary

Fields inherited from class org.apache.oro.text.GenericPatternCache

DEFAULT_CAPACITY

Constructor Summary

PatternCacheLRU()
Same as:
 PatternCacheLRU(GenericPatternCache.DEFAULT_CAPACITY);
 
PatternCacheLRU(int capacity)
Same as:
 PatternCacheLRU(capacity, new Perl5Compiler());
 
PatternCacheLRU(int capacity, PatternCompiler compiler)
Creates a PatternCacheLRU instance with a given cache capacity, and initialized to use a given PatternCompiler instance as a pattern compiler.
PatternCacheLRU(PatternCompiler compiler)
Same as:
 PatternCacheLRU(GenericPatternCache.DEFAULT_CAPACITY, compiler);
 

Method Summary

Methods inherited from class org.apache.oro.text.GenericPatternCache

addPattern, addPattern, capacity, getPattern, getPattern, size

Constructor Details

PatternCacheLRU

public PatternCacheLRU()
Same as:
 PatternCacheLRU(GenericPatternCache.DEFAULT_CAPACITY);
 

PatternCacheLRU

public PatternCacheLRU(int capacity)
Same as:
 PatternCacheLRU(capacity, new Perl5Compiler());
 

PatternCacheLRU

public PatternCacheLRU(int capacity,
                       PatternCompiler compiler)
Creates a PatternCacheLRU instance with a given cache capacity, and initialized to use a given PatternCompiler instance as a pattern compiler.

Parameters:
capacity - The capacity of the cache.
compiler - The PatternCompiler to use to compile patterns.

PatternCacheLRU

public PatternCacheLRU(PatternCompiler compiler)
Same as:
 PatternCacheLRU(GenericPatternCache.DEFAULT_CAPACITY, compiler);
 

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