Examples of org.apache.openjpa.writebehind.WriteBehindCache

org.apache.openjpa.writebehind.WriteBehindCache
The WriteBehindCache stores updates to entities before flushing to the database. A {@link WriteBehindCallback} instance will be used to write thechanges to the database.

        // store manager, because it's easier for users to deal with
        // that way
        StoreManager sm = newStoreManager();
        DelegatingStoreManager dsm = null;
        if (_conf.getDataCacheManagerInstance().getSystemDataCache() != null) {
            WriteBehindCache wbCache = _conf.getWriteBehindCacheManagerInstance().getSystemWriteBehindCache();
            if (wbCache != null) {
                dsm = new DataCacheStoreManager(new WriteBehindStoreManager(sm, wbCache));
            } else {
                dsm = new DataCacheStoreManager(sm);
            }

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        return dsm;
    }
    
    protected void initWriteBehindCallback() { 
        WriteBehindCache cache = _conf.getWriteBehindCacheManagerInstance().getSystemWriteBehindCache();
        if (cache != null) {
            // Verify we are not missing one or more of the following required
            // WriteBehind configuration parameters:
            //   - openjpa.DataCache
            //   - openjpa.WriteBehindCallback

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    public void testWriteBehindCacheCreated() {
        assertNotNull("EMF was not created.", emf);
        WriteBehindCacheManager manager = getWBCacheManager();
        assertNotNull("WriteBehindCacheManager should exist", manager);


        WriteBehindCache wbcache = manager.getSystemWriteBehindCache();
        assertNotNull("SystemWriteBehindCache should exist", wbcache);


        assertTrue(String.format("Expecting %s to be an instance of %s",
            wbcache, SimpleWriteBehindCache.class),
            wbcache instanceof SimpleWriteBehindCache);

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        props.put("openjpa.WriteBehindCallback", "true");


        WriteBehindCacheManager manager = getWBCacheManager(getCustomFactory(props));
        assertNotNull("WriteBehindCacheManager should exist", manager);


        WriteBehindCache wbcache = manager.getSystemWriteBehindCache();
        assertNotNull("SystemWriteBehindCache should exist", wbcache);


        assertTrue(String.format("Expecting %s to be an instance of %s",
            wbcache, CustomWriteBehindCache.class),
            wbcache instanceof CustomWriteBehindCache);

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        OpenJPAEntityManagerFactorySPI factory) {
        return factory.getConfiguration().getWriteBehindCallbackInstance();
    }


    protected WriteBehindCache getWBCache(OpenJPAEntityManagerFactorySPI factory, String name) {
        WriteBehindCache wbc = null;
        if (StringUtils.isEmpty(name)) {
            wbc = getWBCacheManager(factory).getSystemWriteBehindCache();
        } else {
            wbc = getWBCacheManager(factory).getWriteBehindCache(name);
        }

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Related Classes of org.apache.openjpa.writebehind.WriteBehindCache

org.apache.openjpa.jdbc.writebehind.AbstractWriteBehindTestCase

org.apache.openjpa.jdbc.writebehind.TestWriteBehindConfiguration

org.apache.openjpa.kernel.AbstractBrokerFactory

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