Examples of ReloadingController

org.apache.commons.configuration.reloading.ReloadingController
A class for adding support for reload operations in a generic way.

A {@code ReloadingController} monitors a specific source and triggersreloading events if necessary. So it does not perform reloading itself, but only sends out notifications when it thinks that this should be done. This allows for a very generic setup in which different components involved in reloading are loosely coupled via events.

A typical usage scenario is as follows:
- A {@code ReloadingController} instance is created and initialized with a{@link ReloadingDetector} object.
- A number of {@link EventListener} objects for reloading events can beregistered at the controller.
- Now the controller's {@code checkForReloading()} method is calledwhenever a check is to be performed. This could be done for instance by a timer in regular intervals or by any other means appropriate for a specific application.
- When a check reveals that a reload operation is necessary all registered event listeners are notified.
- Typically one of the listeners is responsible to perform the actual reload operation. (How this is done is not in the scope of the controller object.) After this has been done, the controller's {@code resetReloadingState()} method must be called. It tells the controllerthat the last notification has been processed and that new checks are possible again. It is important that this method is called. Otherwise, {@code checkForReloading()} will not do any new checks or send out eventnotifications any more.
This class can be accessed from multiple threads concurrently. It shields the associated {@link ReloadingDetector} object for concurrent access, so that aconcrete detector implementation does not have to be thread-safe.
@version $Id: ReloadingController.java 1612667 2014-07-22 20:00:39Z oheger $ @since 2.0
org.apache.commons.configuration2.reloading.ReloadingController
A class for adding support for reload operations in a generic way.

A {@code ReloadingController} monitors a specific source and triggersreloading events if necessary. So it does not perform reloading itself, but only sends out notifications when it thinks that this should be done. This allows for a very generic setup in which different components involved in reloading are loosely coupled via events.

A typical usage scenario is as follows:
- A {@code ReloadingController} instance is created and initialized with a{@link ReloadingDetector} object.
- A number of {@link EventListener} objects for reloading events can beregistered at the controller.
- Now the controller's {@code checkForReloading()} method is calledwhenever a check is to be performed. This could be done for instance by a timer in regular intervals or by any other means appropriate for a specific application.
- When a check reveals that a reload operation is necessary all registered event listeners are notified.
- Typically one of the listeners is responsible to perform the actual reload operation. (How this is done is not in the scope of the controller object.) After this has been done, the controller's {@code resetReloadingState()} method must be called. It tells the controllerthat the last notification has been processed and that new checks are possible again. It is important that this method is called. Otherwise, {@code checkForReloading()} will not do any new checks or send out eventnotifications any more.
This class can be accessed from multiple threads concurrently. It shields the associated {@link ReloadingDetector} object for concurrent access, so that aconcrete detector implementation does not have to be thread-safe.
@version $Id: ReloadingController.java 1624601 2014-09-12 18:04:36Z oheger $ @since 2.0

Examples of org.apache.commons.configuration.reloading.ReloadingController

     * @return the new {@code ReloadingController}
     */
    private ReloadingController createReloadingController()
    {
        ReloadingDetector ctrlDetector = createReloadingDetectorForController();
        ReloadingController ctrl = new ReloadingController(ctrlDetector);
        connectToReloadingController(ctrl);
        return ctrl;
    }

View Full Code Here

Examples of org.apache.commons.configuration2.reloading.ReloadingController

    {
        ReloadingDetector detector =
                EasyMock.createNiceMock(ReloadingDetector.class);
        EasyMock.expect(detector.isReloadingRequired()).andReturn(Boolean.TRUE);
        EasyMock.replay(detector);
        ReloadingController controller = new ReloadingController(detector);
        BasicConfigurationBuilder<Configuration> builder =
                new BasicConfigurationBuilder<Configuration>(
                        PropertiesConfiguration.class);
        Configuration configuration = builder.getConfiguration();


        builder.connectToReloadingController(controller);
        controller.checkForReloading(null);
        assertTrue("Not in reloading state", controller.isInReloadingState());
        assertNotSame("No new configuration created", configuration,
                builder.getConfiguration());
        assertFalse("Still in reloading state", controller.isInReloadingState());
    }

View Full Code Here

Examples of org.apache.commons.configuration2.reloading.ReloadingController

     * @return the new {@code ReloadingController}
     */
    private ReloadingController createReloadingController()
    {
        ReloadingDetector ctrlDetector = createReloadingDetectorForController();
        ReloadingController ctrl = new ReloadingController(ctrlDetector);
        connectToReloadingController(ctrl);
        return ctrl;
    }

View Full Code Here

Examples of org.apache.commons.configuration2.reloading.ReloadingController

    {
        ReloadingDetector detector =
                EasyMock.createMock(ReloadingDetector.class);
        EasyMock.expect(detector.isReloadingRequired()).andReturn(Boolean.TRUE);
        EasyMock.replay(detector);
        ReloadingController controller = new ReloadingController(detector);
        BasicConfigurationBuilder<Configuration> builder =
                new BasicConfigurationBuilder<Configuration>(
                        PropertiesConfiguration.class);
        BuilderEventListenerImpl builderListener =
                new BuilderEventListenerImpl();
        builder.addEventListener(ConfigurationBuilderEvent.ANY, builderListener);


        ReloadingBuilderSupportListener listener =
                ReloadingBuilderSupportListener.connect(builder, controller);
        assertNotNull("No listener returned", listener);
        controller.checkForReloading(null);
        builderListener.nextEvent(ConfigurationBuilderEvent.RESET);
        builderListener.assertNoMoreEvents();
    }

View Full Code Here

Examples of org.apache.commons.configuration2.reloading.ReloadingController

    @SuppressWarnings("unchecked")
    @Test
    public void testResetReloadingStateOnResultCreation()
            throws ConfigurationException
    {
        ReloadingController controller =
                EasyMock.createMock(ReloadingController.class);
        controller.addEventListener(EasyMock.eq(ReloadingEvent.ANY),
                EasyMock.anyObject(EventListener.class));
        controller.resetReloadingState();
        EasyMock.replay(controller);
        BasicConfigurationBuilder<Configuration> builder =
                new BasicConfigurationBuilder<Configuration>(
                        PropertiesConfiguration.class);

View Full Code Here

Examples of org.apache.commons.configuration2.reloading.ReloadingController

        @Override
        protected FileBasedConfigurationBuilder<XMLConfiguration> createManagedBuilder(
                String fileName, Map<String, Object> params)
                throws ConfigurationException
        {
            final ReloadingController ctrl =
                    EasyMock.createMock(ReloadingController.class);
            reloadingControllers.add(ctrl);
            return new ReloadingFileBasedConfigurationBuilder<XMLConfiguration>(
                    getResultClass(), params)
            {

View Full Code Here

Examples of org.apache.commons.configuration2.reloading.ReloadingController

        CombinedReloadingController rc =
                (CombinedReloadingController) builder.getReloadingController();
        Collection<ReloadingController> subControllers = rc.getSubControllers();
        assertEquals("Wrong number of sub controllers", 1,
                subControllers.size());
        ReloadingController subctrl =
                ((ReloadingControllerSupport) builder.getDefinitionBuilder())
                        .getReloadingController();
        assertSame("Wrong sub controller", subctrl, subControllers.iterator()
                .next());
    }

View Full Code Here

Examples of org.apache.commons.configuration2.reloading.ReloadingController

            assertEquals("Wrong property", "no", config.getString(key));
            ConfigurationBuilder<? extends Configuration> childBuilder =
                    builder.getNamedBuilder("clientConfig");
            assertTrue("Not a reloading builder",
                    childBuilder instanceof ReloadingControllerSupport);
            ReloadingController ctrl =
                    ((ReloadingControllerSupport) childBuilder)
                            .getReloadingController();
            ctrl.checkForReloading(null); // initialize reloading
            BuilderEventListenerImpl l = new BuilderEventListenerImpl();
            childBuilder.addEventListener(ConfigurationBuilderEvent.RESET, l);
            reloadConfig.setProperty(key, "yes");
            handler.save();


            int attempts = 10;
            boolean changeDetected;
            do
            {
                changeDetected = ctrl.checkForReloading(null);
                if (!changeDetected)
                {
                    Thread.sleep(1000);
                    handler.save(outFile);
                }

View Full Code Here

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.