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package org.apache.commons.ognl.internal; |
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import org.apache.commons.ognl.internal.entry.CacheEntryFactory; |
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import java.util.HashMap; |
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import java.util.Map; |
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public class HashMapCache<K, V> |
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implements Cache<K, V> |
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{ |
34 | 14 | private final Map<K, V> cache = new HashMap<K, V>( 512 ); |
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private CacheEntryFactory<K, V> cacheEntryFactory; |
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public HashMapCache( CacheEntryFactory<K, V> cacheEntryFactory ) |
39 | 14 | { |
40 | 14 | this.cacheEntryFactory = cacheEntryFactory; |
41 | 14 | } |
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public void clear() |
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{ |
45 | 24 | synchronized ( cache ) |
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{ |
47 | 24 | cache.clear(); |
48 | 24 | } |
49 | 24 | } |
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public int getSize() |
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{ |
53 | 4 | synchronized ( cache ) |
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{ |
55 | 4 | return cache.size(); |
56 | 0 | } |
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} |
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public V get( K key ) |
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throws CacheException |
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{ |
62 | 565375337 | V v = cache.get( key ); |
63 | 565375337 | if ( shouldCreate( cacheEntryFactory, v ) ) |
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{ |
65 | 2967 | synchronized ( cache ) |
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{ |
67 | 2967 | v = cache.get( key ); |
68 | 2967 | if ( v != null ) |
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{ |
70 | 300 | return v; |
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} |
72 | 2667 | return put( key, cacheEntryFactory.create( key ) ); |
73 | 0 | } |
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} |
75 | 565372370 | return v; |
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} |
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protected boolean shouldCreate( CacheEntryFactory<K, V> cacheEntryFactory, V v ) |
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throws CacheException |
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{ |
81 | 565375337 | if ( cacheEntryFactory != null ) |
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{ |
83 | 565371980 | if ( v == null ) |
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{ |
85 | 2967 | return true; |
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} |
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} |
88 | 565372370 | return false; |
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} |
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public V put( K key, V value ) |
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{ |
93 | 2839 | synchronized ( cache ) |
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{ |
95 | 2839 | cache.put( key, value ); |
96 | 2839 | return value; |
97 | 0 | } |
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} |
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public boolean contains( K key ) |
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{ |
103 | 0 | return this.cache.containsKey( key ); |
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} |
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} |