Examples of org.castor.cache.Cache

org.castor.cache.Cache
Interface specification for performance caches as used in Castor. Please implement this interface if you wish to provide your own cache implementation.
At initialization each cache implementation gets passed a properties map containing key/value pairs. Apart of 3 reserved standard properties, individual once can be used to configure the cache behavier. The standard properties are:
type which is evaluated by the CacheFactoryRegistry and defines the requested cache type. If not set count-limited cahce will be used as default.
debug is also evaluated by the CacheFactoryRegistry and defines if the cache instance will be wrapped by a DebuggingCacheProxy to log debug messages at every access to the cache. If not set no debugging will take place.
name is used by AbstractBaseCache to set the name of the cache instance. At the moment every cache type available extends this AbstractBaseCache. The name does not influence internal behavier of the cache but is usefull to identify from which cache instance debug messages are coming from. By default castor uses the classname of the cached objects as name for the cache. If not present the name will be empty.
For a description of the individual properties you should have a look at the javadoc of the different cache types. It needs to be noted that only string keys and values are allowed. @author Werner Guttmann @author Ralf Joachim @version $Revision: 7950 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $ @since 1.0

    }


    public void testGetCache() {
        CacheFactory cf = new CoherenceCacheFactory();
        try {
            Cache c = cf.getCache(null);
            assertTrue(c instanceof CoherenceCache);
        } catch (CacheAcquireException ex) {
            fail("Failed to get instance of CoherenceCache from factroy");
        }
    }

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    }


    public void testGetCache() {
        CacheFactory cf = new EHCacheFactory();
        try {
            Cache c = cf.getCache(null);
            assertTrue(c instanceof EHCache);
        } catch (CacheAcquireException ex) {
            fail("Failed to get instance of EHCache from factroy");
        }
    }

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        assertNull(cache.get("fourth key"));
        assertNull(cache.get("fifth key"));
    }


    public void testPut() {
        Cache cache = initialize();


        assertEquals("third value", cache.put("third key", "alternate third value"));
        assertNull(cache.put("fourth key", "forth value"));


        assertTrue(cache.containsKey("first key"));
        assertTrue(cache.containsKey("second key"));
        assertTrue(cache.containsKey("third key"));
        assertTrue(cache.containsKey("fourth key"));
        assertFalse(cache.containsKey("fifth key"));
    }

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        assertTrue(cache.containsKey("fourth key"));
        assertFalse(cache.containsKey("fifth key"));
    }


    public void testRemove() {
        Cache cache = initialize();


        assertEquals("third value", cache.remove("third key"));


        assertTrue(cache.containsKey("first key"));
        assertTrue(cache.containsKey("second key"));
        assertFalse(cache.containsKey("third key"));
        assertFalse(cache.containsKey("fourth key"));
        assertFalse(cache.containsKey("fifth key"));
    }

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        assertFalse(cache.containsKey("fourth key"));
        assertFalse(cache.containsKey("fifth key"));
    }


    public void testPutAll() {
        Cache cache = initialize();


        HashMap map = new HashMap();
        map.put("fourth key", "forth value");
        map.put("fifth key", "fifth value");
        
        cache.putAll(map);
        
        assertTrue(cache.containsKey("first key"));
        assertTrue(cache.containsKey("second key"));
        assertTrue(cache.containsKey("third key"));
        assertTrue(cache.containsKey("fourth key"));
        assertTrue(cache.containsKey("fifth key"));
    }

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        assertTrue(cache.containsKey("fourth key"));
        assertTrue(cache.containsKey("fifth key"));
    }


    public void testKeySet() {
        Cache cache = initialize();


        Set set = cache.keySet();
        
        assertEquals(3, set.size());
        assertTrue(set.contains("first key"));
        assertTrue(set.contains("second key"));
        assertTrue(set.contains("third key"));

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        assertTrue(set.contains("second key"));
        assertTrue(set.contains("third key"));
    }


    public void testValues() {
        Cache cache = initialize();


        Collection col = cache.values();
        
        assertEquals(3, col.size());
        assertTrue(col.contains("first value"));
        assertTrue(col.contains("second value"));
        assertTrue(col.contains("third value"));

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        assertTrue(col.contains("second value"));
        assertTrue(col.contains("third value"));
    }


    public void testEntrySet() {
        Cache cache = initialize();


        Set set = cache.entrySet();
        
        assertEquals(3, set.size());
        
        Object[] objs = set.toArray();
        HashMap map = new HashMap();

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        assertTrue(map.containsKey("third key"));
        assertEquals("third value", map.get("third key"));
    }
    
    public void testExpire() {
        Cache cache = new CountLimited();


        try {
            Properties params = new Properties();
            params.put(Cache.PARAM_NAME, "dummy");
            params.put(CountLimited.PARAM_CAPACITY, "3");
            cache.initialize(params);
        } catch (CacheAcquireException ex) {
            fail("Unexpected CacheAcquireException at initialization.");
        }
        
        assertEquals(0, cache.size());


        assertNull(cache.put("a", "#a"));
        assertEquals(1, cache.size());
        assertTrue(cache.containsKey("a"));
        
        assertNull(cache.put("b", "#b"));
        assertEquals(2, cache.size());
        assertTrue(cache.containsKey("a"));
        assertTrue(cache.containsKey("b"));
        
        assertNull(cache.put("c", "#c"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("a"));
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        
        assertNull(cache.put("d", "#d"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        assertTrue(cache.containsKey("d"));
        
        assertEquals("#c", cache.put("c", "#c1"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        assertTrue(cache.containsKey("d"));
        
        assertEquals("#c1", cache.put("c", "#c2"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        assertTrue(cache.containsKey("d"));
        
        assertEquals("#c2", cache.put("c", "#c3"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        assertTrue(cache.containsKey("d"));
        
        assertEquals("#b", cache.put("b", "#b"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        assertTrue(cache.containsKey("d"));
        
        assertNull(cache.put("e", "#e"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("c"));
        assertTrue(cache.containsKey("d"));
        assertTrue(cache.containsKey("e"));


        assertNull(cache.put("f", "#f"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("d"));
        assertTrue(cache.containsKey("e"));
        assertTrue(cache.containsKey("f"));


        assertEquals("#e", cache.remove("e"));
        assertEquals(2, cache.size());
        assertTrue(cache.containsKey("d"));
        assertTrue(cache.containsKey("f"));


        assertNull(cache.put("g", "#g"));
        assertEquals(2, cache.size());
        assertTrue(cache.containsKey("f"));
        assertTrue(cache.containsKey("g"));


        assertEquals("#f", cache.remove("f"));
        assertEquals(1, cache.size());
        assertTrue(cache.containsKey("g"));


        assertNull(cache.remove("b"));
        assertEquals(1, cache.size());
        assertTrue(cache.containsKey("g"));


        assertEquals("#g", cache.remove("g"));
        assertEquals(0, cache.size());


        assertNull(cache.remove("x"));
        assertEquals(0, cache.size());


        assertNull(cache.put("a", "#a"));
        assertEquals(1, cache.size());
        assertTrue(cache.containsKey("a"));
        
        assertNull(cache.put("b", "#b"));
        assertEquals(2, cache.size());
        assertTrue(cache.containsKey("a"));
        assertTrue(cache.containsKey("b"));
        
        assertNull(cache.put("c", "#c"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("a"));
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        
        assertNull(cache.put("d", "#d"));
        assertEquals(3, cache.size());
        assertTrue(cache.containsKey("b"));
        assertTrue(cache.containsKey("c"));
        assertTrue(cache.containsKey("d"));
    }

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        assertEquals("com.opensymphony.oscache.base.NeedsRefreshException",
                     OsCache.NEEDS_REFRESH_EXCEPTION);
    }


    public void testConstructor() {
        Cache c = new OsCache(null);
        assertTrue(c instanceof OsCache);
    }

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Related Classes of org.castor.cache.Cache

org.castor.cache.distributed.OsCacheFactory

org.castor.cache.distributed.TestCoherenceCache

org.castor.cache.distributed.TestCoherenceCacheFactory

org.castor.cache.distributed.TestEHCache

org.castor.cache.distributed.TestEHCacheFactory

org.castor.cache.distributed.TestFKCache

org.castor.cache.distributed.TestFKCacheFactory

org.castor.cache.distributed.TestGigaspacesCache

org.castor.cache.distributed.TestGigaspacesCacheFactory

org.castor.cache.distributed.TestJCache

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