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

        throws Exception
    {


        //boolean show = true;//false;


        JCS cache = JCS.getInstance( region );


        Thread.sleep( 100 );


        TCPLateralCacheAttributes lattr2 = new TCPLateralCacheAttributes();
        lattr2.setTcpListenerPort( 1102 );
        lattr2.setTransmissionTypeName( "TCP" );
        lattr2.setTcpServer( "localhost:1110" );
        lattr2.setIssueRemoveOnPut( true );
        // should still try to remove
        lattr2.setAllowPut( false );


        // this service will put and remove using the lateral to
        // the cache instance above
        // the cache thinks it is different since the listenerid is different
        LateralTCPService service = new LateralTCPService( lattr2 );
        service.setListenerId( 123456 );


        String keyToBeRemovedOnPut = "test1";


        String keyToNotBeRemovedOnPut = "test2";


        Serializable dataToPassHashCodeCompare = new Serializable()
        {
            private static final long serialVersionUID = 1L;


            public int hashCode()
            {
                return 1;
            }
        };
        //String dataToPassHashCodeCompare = "this should be the same and not
        // get removed.";
        //p( "dataToPassHashCodeCompare hashcode = " + +
        // dataToPassHashCodeCompare.hashCode() );


        cache.put( keyToBeRemovedOnPut, "this should get removed." );
        ICacheElement element1 = new CacheElement( region, keyToBeRemovedOnPut, region
            + ":data-this shouldn't get there" );
        service.update( element1 );


        cache.put( keyToNotBeRemovedOnPut, dataToPassHashCodeCompare );
        ICacheElement element2 = new CacheElement( region, keyToNotBeRemovedOnPut, dataToPassHashCodeCompare );
        service.update( element2 );


        /*
         * try { for ( int i = 1; i < numOps; i++ ) { Random ran = new Random( i );
         * int n = ran.nextInt( 4 ); int kn = ran.nextInt( range ); String key =
         * "key" + kn;
         *
         * ICacheElement element = new CacheElement( region, key, region +
         * ":data" + i + " junk asdfffffffadfasdfasf " + kn + ":" + n );
         * service.update( element ); if ( show ) { p( "put " + key ); }
         *
         * if ( i % 100 == 0 ) { System.out.println( cache.getStats() ); }
         *  } p( "Finished cycle of " + numOps ); } catch ( Exception e ) { p(
         * e.toString() ); e.printStackTrace( System.out ); throw e; }
         */


        JCS jcs = JCS.getInstance( region );
        String key = "testKey" + testNum;
        String data = "testData" + testNum;
        jcs.put( key, data );
        String value = (String) jcs.get( key );
        assertEquals( "Couldn't put normally.", data, value );


        // make sure the items we can find are in the correct region.
        for ( int i = 1; i < numOps; i++ )
        {
            String keyL = "key" + i;
            String dataL = (String) jcs.get( keyL );
            if ( dataL != null )
            {
                assertTrue( "Incorrect region detected.", dataL.startsWith( region ) );
            }

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Examples of org.apache.jcs.JCS

     * @throws CacheException
     */
    public void testPutGetRemoveThroughHub()
        throws CacheException
    {
        JCS cache = JCS.getInstance( "testPutGetThroughHub" );


        int max = cache.getCacheAttributes().getMaxObjects();
        int items = max * 2;


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


        // Test that first items are not in the cache
        for ( int i = max; i >= 0; i-- )
        {
            String value = (String) cache.get( i + ":key" );
            assertNull( "Should not have value for key [" + i + ":key" + "] in the cache.", value );
        }


        // Test that last items are in cache
        // skip 2 for the buffer.
        for ( int i = max + 2; i < items; i++ )
        {
            String value = (String) cache.get( i + ":key" );
            assertEquals( "myregion" + " data " + i, value );
        }


        System.out.println( cache.getStats() );
    }

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Examples of org.apache.jcs.JCS

    public void testStandardPut()
        throws Exception
    {
        String region = "region1";


        JCS cache = JCS.getInstance( region );


        Thread.sleep( 100 );


        TCPLateralCacheAttributes lattr2 = new TCPLateralCacheAttributes();
        lattr2.setTcpListenerPort( 1102 );
        lattr2.setTransmissionTypeName( "TCP" );
        lattr2.setTcpServer( "localhost:1110" );
        lattr2.setIssueRemoveOnPut( false );
        // should still try to remove
        // lattr2.setAllowPut( false );


        // Using the lateral, this service will put to and remove from
        // the cache instance above.
        // The cache thinks it is different since the listenerid is different
        LateralTCPService service = new LateralTCPService( lattr2 );
        service.setListenerId( 123456 );


        String keyToBeRemovedOnPut = "test1_notremoved";


        ICacheElement element1 = new CacheElement( region, keyToBeRemovedOnPut, region
            + ":data-this shouldn't get removed, it should get to the cache." );
        service.update( element1 );


        Thread.sleep( 1000 );


        Object testObj = cache.get( keyToBeRemovedOnPut );
        p( "testStandardPut, test object = " + testObj );
        assertNotNull( "The test object should not have been removed by a put.", testObj );
    }

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Examples of org.apache.jcs.JCS

        throws Exception
    {


        boolean show = true;// false;


        JCS cache = JCS.getInstance( region );


        Thread.sleep( 100 );


        TCPLateralCacheAttributes lattr2 = new TCPLateralCacheAttributes();
        lattr2.setTcpListenerPort( 1102 );
        lattr2.setTransmissionTypeName( "TCP" );
        lattr2.setTcpServer( "localhost:1110" );
        lattr2.setIssueRemoveOnPut( true );
        // should still try to remove
        lattr2.setAllowPut( false );


        // Using the lateral, this service will put to and remove from
        // the cache instance above.
        // The cache thinks it is different since the listenerid is different
        LateralTCPService service = new LateralTCPService( lattr2 );
        service.setListenerId( 123456 );


        String keyToBeRemovedOnPut = "test1";
        cache.put( keyToBeRemovedOnPut, "this should get removed." );


        ICacheElement element1 = new CacheElement( region, keyToBeRemovedOnPut, region
            + ":data-this shouldn't get there" );
        service.update( element1 );


        try
        {
            for ( int i = 1; i < numOps; i++ )
            {
                Random ran = new Random( i );
                int n = ran.nextInt( 4 );
                int kn = ran.nextInt( range );
                String key = "key" + kn;


                ICacheElement element = new CacheElement( region, key, region + ":data" + i
                    + " junk asdfffffffadfasdfasf " + kn + ":" + n );
                service.update( element );
                if ( show )
                {
                    p( "put " + key );
                }


                if ( i % 100 == 0 )
                {
                    System.out.println( cache.getStats() );
                }


            }
            p( "Finished cycle of " + numOps );
        }
        catch ( Exception e )
        {
            p( e.toString() );
            e.printStackTrace( System.out );
            throw e;
        }


        JCS jcs = JCS.getInstance( region );
        String key = "testKey" + testNum;
        String data = "testData" + testNum;
        jcs.put( key, data );
        String value = (String) jcs.get( key );
        assertEquals( "Couldn't put normally.", data, value );


        // make sure the items we can find are in the correct region.
        for ( int i = 1; i < numOps; i++ )
        {
            String keyL = "key" + i;
            String dataL = (String) jcs.get( keyL );
            if ( dataL != null )
            {
                assertTrue( "Incorrect region detected.", dataL.startsWith( region ) );
            }

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Examples of org.apache.jcs.JCS

        tca.setRegion( region );
        tca.random( range, numOps );


        // make sure a simple put then get works
        // this may fail if the other tests are flooding the disk cache
        JCS jcs = JCS.getInstance( region );
        String key = "testKey" + testNum;
        String data = "testData" + testNum;
        jcs.put( key, data );
        String value = (String) jcs.get( key );
        assertEquals( data, value );
    }

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Examples of org.apache.jcs.JCS

    public void runTestForRegion( String region, int range, int numOps, int testNum )
        throws Exception
    {
        boolean show = true;//false;


        JCS cache = JCS.getInstance( region );


        TCPLateralCacheAttributes lattr2 = new TCPLateralCacheAttributes();
        lattr2.setTcpListenerPort( 1103 );
        lattr2.setTransmissionTypeName( "TCP" );
        lattr2.setTcpServer( "localhost:1102" );


        // this service will put and remove using the lateral to
        // the cache instance above
        // the cache thinks it is different since the listenerid is different
        LateralTCPService service = new LateralTCPService( lattr2 );
        service.setListenerId( 123456 );


        try
        {
            for ( int i = 1; i < numOps; i++ )
            {
                Random ran = new Random( i );
                int n = ran.nextInt( 4 );
                int kn = ran.nextInt( range );
                String key = "key" + kn;
                if ( n == 1 )
                {
                    ICacheElement element = new CacheElement( region, key, region + ":data" + i
                        + " junk asdfffffffadfasdfasf " + kn + ":" + n );
                    service.update( element );
                    if ( show )
                    {
                        p( "put " + key );
                    }
                }
                /**/
                else if ( n == 2 )
                {
                    service.remove( region, key );
                    if ( show )
                    {
                        p( "removed " + key );
                    }
                }
                /**/
                else
                {
                    // slightly greater chance of get
                    try
                    {
                        Object obj = service.get( region, key );
                        if ( show && obj != null )
                        {
                            p( obj.toString() );
                        }
                    }
                    catch ( Exception e )
                    {
                        // consider failing, some timeouts are expected
                        e.printStackTrace();
                    }
                }


                if ( i % 100 == 0 )
                {
                    System.out.println( cache.getStats() );
                }


            }
            p( "Finished random cycle of " + numOps );
        }
        catch ( Exception e )
        {
            p( e.toString() );
            e.printStackTrace( System.out );
            throw e;
        }


        JCS jcs = JCS.getInstance( region );
        String key = "testKey" + testNum;
        String data = "testData" + testNum;
        jcs.put( key, data );
        String value = (String) jcs.get( key );
        assertEquals( "Couldn't put normally.", data, value );


        // make sure the items we can find are in the correct region.
        for ( int i = 1; i < numOps; i++ )
        {
            String keyL = "key" + i;
            String dataL = (String) jcs.get( keyL );
            if ( dataL != null )
            {
                assertTrue( "Incorrect region detected.", dataL.startsWith( region ) );
            }

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Examples of org.apache.jcs.JCS

    {
        System.getProperties().setProperty( "jcs.default.cacheattributes.MaxObjects", "6789" );


        JCS.setConfigFilename( "/TestSystemPropertyUsage.ccf" );


        JCS jcs = JCS.getInstance( "someCacheNotInFile" );


        assertEquals( "System property value is not reflected", jcs.getCacheAttributes().getMaxObjects(), Integer
            .parseInt( "6789" ) );


    }

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Examples of org.apache.jcs.JCS


        Properties props = PropertyLoader.loadProperties( "TestSystemPropertyUsage.ccf" );


        mgr.configure( props, false );


        JCS jcs = JCS.getInstance( "someCacheNotInFile" );


        assertFalse( "System property value should not be reflected",
                     jcs.getCacheAttributes().getMaxObjects() == Integer.parseInt( props
                         .getProperty( "jcs.default.cacheattributes.MaxObjects" ) ) );


    }

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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

        tca.setRegion( region );
        tca.random( range, numOps );


        // make sure a simple put then get works
        // this may fail if the other tests are flooding the disk cache
        JCS jcs = JCS.getInstance( region );
        String key = "testKey" + testNum;
        String data = "testData" + testNum;
        jcs.put( key, data );
        String value = (String) jcs.get( key );
        assertEquals( data, value );


    }

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