Examples of org.apache.openjpa.datacache.PartitionedDataCache

org.apache.openjpa.datacache.PartitionedDataCache
A partitioned data cache maintains a set of partitions that are DataCache themselves. Each of the partitioned DataCaches can be individually configured. However, all partitions must be of the same type. By default, this cache uses {@linkplain ConcurrentDataCache} as its partitions.
This cache can be configured as a plug-in as follows:
<property name='openjpa.DataCache" value="partitioned(name=X, PartitionType=concurrent,Partitions='(name=a,cacheSize=100), (name=b,cacheSize=200)')
Notice that the individual partition properties are enclosed parentheses, separated by comma and finally the whole property string is enclosed in single quote. Each partition must have a non-empty name that are unique among the partitions. The {@linkplain CacheDistributionPolicy policy} can returnthe name of a partition to distribute the managed instances to be cached in respective partition. The above configuration will configure a partitioned cache named X with two partitions named a and b with cache size 100 and 200 respectively. Besides the two partitions, this cache instance itself can store data and referred by its own name (X in the above example).
@author Pinaki Poddar @since 2.0.0

        "openjpa.DataCacheManager", 
        "DistributionPolicy=org.apache.openjpa.persistence.datacache.TestPartitionedDataCache$TestPolicy");
    }
    
    public void testPropertyParsing() {
        PartitionedDataCache cache = new PartitionedDataCache();
        String badProperty = "(name=a,cacheSize=100),(name=b,cacheSize=200";// missing last bracket
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(name=a,cacheSize=100)(name=b,cacheSize=200)";// missing comma
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(cacheSize=100),(name=b,cacheSize=200)";// missing name
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(name=a,cacheSize=100),(name=a,cacheSize=200)";// duplicate name
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(name=default,cacheSize=100),(name=a,cacheSize=200)";// default name
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }

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        "openjpa.CacheDistributionPolicy",
        "org.apache.openjpa.persistence.datacache.TestPartitionedDataCache$TestPolicy");
    }
    
    public void testPropertyParsing() {
        PartitionedDataCache cache = new PartitionedDataCache();
        String badProperty = "(name=a,cacheSize=100),(name=b,cacheSize=200";// missing last bracket
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(name=a,cacheSize=100)(name=b,cacheSize=200)";// missing comma
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(cacheSize=100),(name=b,cacheSize=200)";// missing name
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(name=a,cacheSize=100),(name=a,cacheSize=200)";// duplicate name
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }
        badProperty = "(name=default,cacheSize=100),(name=a,cacheSize=200)";// default name
        try {
            cache.setPartitions(badProperty);
            fail("Expected parse error on " + badProperty);
        } catch (UserException e) {
            System.err.println(e);
        }

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Related Classes of org.apache.openjpa.datacache.PartitionedDataCache

org.apache.openjpa.lib.conf.PluginListValue

org.apache.openjpa.lib.conf.Value

org.apache.openjpa.persistence.datacache.TestPartitionedDataCache

org.apache.openjpa.util.UserException

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