Examples of JCS

org.apache.jcs.JCS
Simple class for using JCS. To use JCS in your application, you can use the static methods of this class to get access objects (instances of this class) for your cache regions. Ideally this class should be all you need to import to use JCS. One JCS should be created for each region you want to access. If you have several regions, then get instances for each. For best performance the getInstance call should be made in an initialization method. @author Aaron Smuts @author James Taylor @version $Id: JCS.java,v 1.5 2002/05/23 15:22:22 jtaylor Exp $
org.apache.stratum.jcs.JCS
Simple class for using JCS. To use JCS in your application, you can use the static methods of this class to get access objects (instances of this class) for your cache regions. Ideally this class should be all you need to import to use JCS. One JCS should be created for each region you want to access. If you have several regions, then get instances for each. For best performance the getInstance call should be made in an initialization method. @author Aaron Smuts @author James Taylor @created February 13, 2002 @version $Id: JCS.java,v 1.8 2002/02/18 17:14:24 asmuts Exp $

Examples of org.apache.jcs.JCS

     * <p>
     * @throws CacheException
     */
    public void testSwapConfig() throws CacheException
    {
        JCS swap = JCS.getInstance( "Swap" );
        assertEquals( ICompositeCacheAttributes.DISK_USAGE_PATTERN_SWAP, swap.getCacheAttributes().getDiskUsagePattern() );
    }

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Examples of org.apache.jcs.JCS

     * <p>
     * @throws CacheException
     */
    public void testUpdateConfig() throws CacheException
    {
        JCS swap = JCS.getInstance( "Update" );
        assertEquals( ICompositeCacheAttributes.DISK_USAGE_PATTERN_UPDATE, swap.getCacheAttributes().getDiskUsagePattern() );
    }

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Examples of org.apache.jcs.JCS

        throws Exception
    {
        int items = 300000;
        String region = "testCache1";


        JCS jcs = JCS.getInstance( region );


        try
        {


            System.out.println( "Start: " + measureMemoryUse() );


            // Add items to cache


            for ( int i = 0; i <= items; i++ )
            {
                jcs.put( i + ":key", region + " data " + i );
            }


            System.out.println( jcs.getStats() );
            System.out.println( "--------------------------" );
            System.out.println( "After put: " + measureMemoryUse() );


            Thread.sleep( 5000 );


            System.out.println( jcs.getStats() );
            System.out.println( "--------------------------" );
            System.out.println( "After wait: " + measureMemoryUse() );


            // Test that all items are in cache


            for ( int i = 0; i <= items; i++ )
            {
                String value = (String) jcs.get( i + ":key" );


                assertEquals( region + " data " + i, value );
            }


            System.out.println( "After get: " + measureMemoryUse() );


            // // Remove all the items
            // for ( int i = 0; i <= items; i++ )
            // {
            // jcs.remove( i + ":key" );
            // }
            //
            // // Verify removal
            // for ( int i = 0; i <= items; i++ )
            // {
            // assertNull( "Removed key should be null: " + i + ":key" + "\n
            // stats " + jcs.getStats(), jcs.get( i + ":key" ) );
            // }


        }
        finally
        {
            // dump the stats to the report
            System.out.println( jcs.getStats() );
            System.out.println( "--------------------------" );
            System.out.println( "End: " + measureMemoryUse() );
        }
    }

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Examples of org.apache.jcs.JCS

     *
     * @throws Exception
     */
    public void testSimpleGetStats() throws Exception
    {
        JCS cache = JCS.getInstance( "testCache1" );


        // 1 miss, 1 hit, 1 put
        cache.get( "testKey" );
        cache.put( "testKey", "testdata" );
        // should have 4 hits
        cache.get( "testKey" );
        cache.get( "testKey" );
        cache.get( "testKey" );
        cache.get( "testKey" );


        CompositeCacheManager mgr = CompositeCacheManager.getInstance();
        String statsString = mgr.getStats();


        System.out.println( statsString );

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Examples of org.apache.jcs.JCS

     *                If an error occurs
     */
    public void runTestForRegion( String region )
        throws Exception
    {
        JCS jcs = JCS.getInstance( region );


        // Add items to cache
        for ( int i = 0; i <= items; i++ )
        {
            jcs.put( i + ":key", region + " data " + i );
        }


        // Test that all items are in cache
        for ( int i = 0; i <= items; i++ )
        {
            String value = (String) jcs.get( i + ":key" );


            assertEquals( region + " data " + i, value );
        }


        // Remove all the items
        for ( int i = 0; i <= items; i++ )
        {
            jcs.remove( i + ":key" );
        }


        // Verify removal
        // another thread may have inserted since
        for ( int i = 0; i <= items; i++ )
        {
            assertNull( "Removed key should be null: " + i + ":key" + "\n stats " + jcs.getStats(), jcs
                .get( i + ":key" ) );
        }
    }

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Examples of org.apache.jcs.JCS

     */
    public void testGetRegionInfo()
        throws Exception
    {
        String regionName = "myRegion";
        JCS cache = JCS.getInstance( regionName );


        cache.put( "key", "value" );


        JCSAdminBean admin = new JCSAdminBean();


        List regions = admin.buildCacheInfo();

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Examples of org.apache.jcs.JCS

     */
    public void testGetElementForRegionInfo()
        throws Exception
    {
        String regionName = "myRegion";
        JCS cache = JCS.getInstance( regionName );


        // clear the region
        cache.clear();


        String key = "myKey";
        cache.put( key, "value" );


        JCSAdminBean admin = new JCSAdminBean();


        List elements = admin.buildElementInfo( regionName );

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Examples of org.apache.jcs.JCS

        throws Exception
    {
        JCSAdminBean admin = new JCSAdminBean();


        String regionName = "myRegion";
        JCS cache = JCS.getInstance( regionName );


        // clear the region
        cache.clear();
        admin.clearRegion( regionName );


        String key = "myKey";
        cache.put( key, "value" );


        List elements = admin.buildElementInfo( regionName );


        assertEquals( "Wrong number of elements in the region.", 1, elements.size() );

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Examples of org.apache.jcs.JCS

        throws Exception
    {
        JCSAdminBean admin = new JCSAdminBean();


        String regionName = "myRegion";
        JCS cache = JCS.getInstance( regionName );


        String key = "myKey";
        cache.put( key, "value" );


        admin.clearAllRegions();


        List elements2 = admin.buildElementInfo( regionName );
        assertEquals( "Wrong number of elements in the region after remove.", 0, elements2.size() );

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Examples of org.apache.jcs.JCS

     * @throws Exception
     */
    public void testJCS()
        throws Exception
    {
        JCS jcs = JCS.getInstance( "testCache1" );


        LinkedList list = buildList();


        jcs.put( "some:key", list );


        assertEquals( list, jcs.get( "some:key" ) );
    }

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