Examples of org.apache.commons.configuration2.event.EventSource

Package org.apache.commons.configuration2.event

Examples of org.apache.commons.configuration2.event.EventSource

org.apache.commons.configuration2.event.EventSource

An interface for configuration implementations which support registration of event listeners.

Through the methods provided by this interface it is possible to register and remove listeners for different events supported by this library. The event type to be handled by a listener must be provided; the specified event listener must be compatible with this event type. By using generic type parameters, the compiler can check this.
@version $Id: EventSource.java 1624601 2014-09-12 18:04:36Z oheger $ @since 2.0

    @Test
    public void testGetPropertyTrimNoSplit()
    {
        MapConfiguration config = (MapConfiguration) getConfiguration();
        config.getMap().put(KEY, SPACE_VALUE);
        config.setListDelimiterHandler(new DisabledListDelimiterHandler());
        assertEquals("Wrong trimmed value", SPACE_VALUE, config.getProperty(KEY));
    }

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        // first clone this configuration
        AbstractConfiguration c = (AbstractConfiguration) ConfigurationUtils
                .cloneConfiguration(this);


        // now perform interpolation
        c.setListDelimiterHandler(new DisabledListDelimiterHandler());
        for (Iterator<String> it = getKeys(); it.hasNext();)
        {
            String key = it.next();
            c.setProperty(key, getList(key));
        }

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     * @param value the value to be added
     */
    @Override
    protected void addPropertyInternal(String key, Object value)
    {
        ListDelimiterHandler oldHandler = getListDelimiterHandler();
        try
        {
            // temporarily disable delimiter parsing
            setListDelimiterHandler(DisabledListDelimiterHandler.INSTANCE);
            super.addPropertyInternal(key, value);

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     * from the parent.
     */
    @Test
    public void testSetListDelimiterHandler()
    {
        ListDelimiterHandler handler1 = new DefaultListDelimiterHandler('/');
        ListDelimiterHandler handler2 = new DefaultListDelimiterHandler(';');
        parent.setListDelimiterHandler(handler1);
        setUpSubnodeConfig();
        parent.setListDelimiterHandler(handler2);
        assertEquals("List delimiter handler not obtained from parent",
                handler1, config.getListDelimiterHandler());

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     * @return Properties created from the Configuration
     */
    public static Properties getProperties(Configuration config)
    {
        Properties props = new Properties();
        ListDelimiterHandler listHandler;
        boolean useDelimiterHandler;


        if(config instanceof AbstractConfiguration)
        {
            listHandler = ((AbstractConfiguration) config).getListDelimiterHandler();
            useDelimiterHandler = true;
        }
        else
        {
            listHandler = null;
            useDelimiterHandler = false;
        }


        for (Iterator<String> keys = config.getKeys(); keys.hasNext();)
        {
            String key = keys.next();
            List<Object> list = config.getList(key);


            String propValue;
            if (useDelimiterHandler)
            {
                try
                {
                    propValue =
                            String.valueOf(listHandler.escapeList(list,
                                    ListDelimiterHandler.NOOP_TRANSFORMER));
                }
                catch (Exception ex)
                {
                    // obviously, the list handler does not support splitting

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     * test is related to CONFIGURATION-315.
     */
    @Test
    public void testInvalidateEventBeforeAndAfterChange()
    {
        ConfigurationEvent event =
                new ConfigurationEvent(config, ConfigurationEvent.ANY, null, null, true);
        config.onEvent(event);
        assertEquals("No invalidate event fired", 1, listener.invalidateEvents);
        event = new ConfigurationEvent(config, ConfigurationEvent.ANY, null, null, false);
        config.onEvent(event);
        assertEquals("Another invalidate event fired", 1,
                listener.invalidateEvents);
    }

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        conf = new PotentialErrorJNDIConfiguration(ctx);


        nonStringTestHolder = new NonStringTestHolder();
        nonStringTestHolder.setConfiguration(conf);


        listener = new ErrorListenerTestImpl(conf);
        conf.addEventListener(ConfigurationErrorEvent.ANY, listener);
    }

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     */
    @Test
    public void testCloneModify()
    {
        MapConfiguration config = (MapConfiguration) getConfiguration();
        config.addEventListener(ConfigurationEvent.ANY, new EventListenerTestImpl(config));
        MapConfiguration copy = (MapConfiguration) config.clone();
        assertTrue("Event listeners were copied", copy
                .getEventListeners(ConfigurationEvent.ANY).isEmpty());


        config.addProperty("cloneTest", Boolean.TRUE);

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        ConfigurationBuilder<BaseHierarchicalConfiguration> builder =
                createBuilderMock(conf);
        EasyMock.replay(builder);
        BuilderConfigurationWrapperFactory factory =
                new BuilderConfigurationWrapperFactory(EventSourceSupport.DUMMY);
        EventSource src =
                (EventSource) factory.createBuilderConfigurationWrapper(
                        HierarchicalConfiguration.class, builder);
        src.addEventListener(ConfigurationEvent.ANY, null);
    }

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        EventListener<ConfigurationEvent> l1 = new EventListenerTestImpl(null);
        EventListener<ConfigurationEvent> l2 = new EventListenerTestImpl(null);
        BuilderConfigurationWrapperFactory factory =
                new BuilderConfigurationWrapperFactory(
                        EventSourceSupport.BUILDER);
        EventSource src =
                (EventSource) factory.createBuilderConfigurationWrapper(
                        Configuration.class, builder);


        src.addEventListener(ConfigurationEvent.ANY, l1);
        src.addEventListener(ConfigurationEvent.ANY_HIERARCHICAL, l2);
        assertTrue(
                "Wrong result for existing listener",
                src.removeEventListener(ConfigurationEvent.ANY_HIERARCHICAL, l2));
        assertFalse(
                "Wrong result for non-existing listener",
                src.removeEventListener(ConfigurationEvent.ANY_HIERARCHICAL, l2));
        PropertiesConfiguration config = builder.getConfiguration();
        Collection<EventListener<? super ConfigurationEvent>> listeners =
                config.getEventListeners(ConfigurationEvent.ANY_HIERARCHICAL);
        assertTrue("Registered listener not found", listeners.contains(l1));
        assertFalse("Removed listener still found", listeners.contains(l2));

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