Examples of krati.store.StaticDataStore

krati.store.StaticDataStore
A simple implementation of key value store. The store has a fixed capacity. The key-value pairs are stored in the underlying DataArray using the following format:
```
 [count:int][key-length:int][key:bytes][value-length:int][value:bytes][key-length:int][key:bytes][value-length:int][value:bytes]... +------------------ key-value pair 1 ---------------------+------------------- key-value pair 2 -------------------+ 
```
@author jwu
06/04, 2011 - Added support for Closeable
06/04, 2011 - Added getHomeDir
06/25, 2011 - Added constructor using StoreConfig

        super(TestIteratorStaticDataStore.class.getSimpleName());
    }
    
    protected DataStore<byte[], byte[]> createDataStore(File storeDir) throws Exception {
        int capacity = (int)(_keyCount * 1.5);
        return new StaticDataStore(storeDir,
                                   capacity, /* capacity */
                                   10000,    /* batchSize */
                                   5,        /* numSyncBatches */
                                   _segFileSizeMB,
                                   createSegmentFactory());

View Full Code Here

 */
public class TestStaticDataStoreApi extends AbstractTestDataStoreApi {


    @Override
    protected DataStore<byte[], byte[]> createStore(File homeDir) throws Exception {
        return new StaticDataStore(
                homeDir,
                10000, /* capacity */
                100,   /* batchSize */
                5,     /* numSyncBatches */
                32,    /* segmentFileSizeMB */

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    public void testMaxCapacity() throws Exception {
        StoreConfig config = new StoreConfig(getHomeDir(), Integer.MAX_VALUE);
        config.setIndexesCached(false); // Do not cache indexes in memory
        
        StaticDataStore store = StoreFactory.createStaticDataStore(config);
        
        // Check store capacity
        assertEquals(Integer.MAX_VALUE, store.capacity());
        assertEquals(Integer.MAX_VALUE, store.getDataArray().length());
        
        store.close();
    }

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     * @param config - DataStore configuration
     * @return A fixed-capacity DataStore.
     * @throws Exception if the store cannot be created.
     */
    public static StaticDataStore createStaticDataStore(StoreConfig config) throws Exception {
        return new StaticDataStore(config);
    }

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            int batchSize,
            int numSyncBatches,
            int segmentFileSizeMB,
            SegmentFactory segmentFactory,
            double segmentCompactFactor) throws Exception {
        return new StaticDataStore(
                homeDir,
                capacity,
                batchSize,
                numSyncBatches,
                segmentFileSizeMB,

View Full Code Here

 */
public class TestStaticDataStoreIterator extends AbstractTestDataStoreIterator {
    
    @Override
    protected DataStore<byte[], byte[]> createStore(File homeDir) throws Exception {
        return new StaticDataStore(
                homeDir,
                10000, /* capacity */
                100,   /* batchSize */
                5,     /* numSyncBatches */
                32,    /* segmentFileSizeMB */

View Full Code Here

    }
    
    @Override
    protected DataStore<byte[], byte[]> getDataStore(File storeDir) throws Exception {
        int capacity = (int)(_keyCount * 1.5);
        return new StaticDataStore(storeDir,
                                   capacity, /* capacity */
                                   10000,    /* entrySize */
                                   10,       /* maxEntries */
                                   _segFileSizeMB,
                                   getSegmentFactory());

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    protected SegmentFactory getSegmentFactory() {
        return new krati.core.segment.MemorySegmentFactory();
    }
    
    protected DataStore<byte[], byte[]> getDataStore(File storeDir, int capacity) throws Exception {
        return new StaticDataStore(storeDir,
                                   capacity,
                                   1000,      /* entrySize */
                                   5,         /* maxEntries */
                                   _segFileSizeMB,
                                   getSegmentFactory());

View Full Code Here

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Related Classes of krati.store.StaticDataStore

krati.core.array.AddressArray

krati.core.array.AddressArrayFactory

krati.core.array.SimpleDataArray

krati.core.segment.SegmentManager

krati.core.StoreConfig

krati.core.StoreFactory

krati.util.FnvHashFunction

test.store.api.TestStaticDataStoreApi

test.store.api.TestStaticDataStoreIterator

test.store.api.TestStaticDataStoreMaxCapacity

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