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

Package org.apache.commons.configuration2.event

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

org.apache.commons.configuration2.tree.NodeCombiner

Definition of a generic event listener interface.

This event listener interface is used throughout the Commons Configuration library for reacting on all kinds of supported events. The interface is pretty minimalistic, defining only a single {@code onEvent()} method. This simplifies the implementation of custom eventlisteners and also supports the new language features introduced with Java 8 ( {@code EventListener} is a functional interface and thus can be representedby a Lambda expression).
@version $Id: EventListener.java 1624601 2014-09-12 18:04:36Z oheger $ @since 2.0 @param < T> the type of events this listener can process

    private BaseHierarchicalConfiguration config;


    @Before
    public void setUp() throws Exception
    {
        ImmutableNode root =
                new ImmutableNode.Builder(1).addChild(
                        NodeStructureHelper.ROOT_TABLES_TREE).create();
        config = new BaseHierarchicalConfiguration();
        config.getNodeModel().setRootNode(root);
    }

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     * Tests whether addNodes() is correctly synchronized.
     */
    @Test
    public void testAddNodesSynchronized()
    {
        ImmutableNode node = NodeStructureHelper.createNode("newNode", "true");
        config.addNodes("test.addNodes", Collections.singleton(node));
        sync.verify(Methods.BEGIN_WRITE, Methods.END_WRITE);
    }

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        }


        else
        {
            Iterator<ConfigData> it = configurations.iterator();
            ImmutableNode node = it.next().getTransformedRoot();
            while (it.hasNext())
            {
                node = nodeCombiner.combine(node,
                        it.next().getTransformedRoot());
            }

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         *
         * @return the transformed root node
         */
        public ImmutableNode getTransformedRoot()
        {
            ImmutableNode configRoot = getRootNodeOfConfiguration();
            return (atPath == null) ? configRoot : prependAtPath(configRoot);
        }

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        private ImmutableNode getRootNodeOfConfiguration()
        {
            getConfiguration().lock(LockMode.READ);
            try
            {
                ImmutableNode root =
                        ConfigurationUtils
                                .convertToHierarchical(getConfiguration(),
                                        conversionExpressionEngine).getNodeModel()
                                .getInMemoryRepresentation();
                rootNode = root;

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     * @param selector the selector
     * @return the tracked model
     */
    private TrackedNodeModel setUpTrackedModel(NodeSelector selector)
    {
        InMemoryNodeModel parentModel = (InMemoryNodeModel) parent.getModel();
        parentModel.trackNode(selector, parent);
        return new TrackedNodeModel(parent, selector, true);
    }

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        setUpSubnodeConfig();
        SubnodeConfiguration copy = (SubnodeConfiguration) config.clone();
        assertNotSame("Same model", config.getModel(), copy.getModel());
        TrackedNodeModel subModel = (TrackedNodeModel) copy.getModel();
        assertEquals("Wrong selector", SELECTOR, subModel.getSelector());
        InMemoryNodeModel parentModel = (InMemoryNodeModel) parent.getModel();
        assertEquals("Wrong parent model", parentModel,
                subModel.getParentModel());


        // Check whether the track count was increased
        parentModel.untrackNode(SELECTOR);
        parentModel.untrackNode(SELECTOR);
        assertTrue("Wrong finalize flag",
                subModel.isReleaseTrackedNodeOnFinalize());
    }

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            }
            catch (ConfigurationRuntimeException iex)
            {
                // the passed in key does not map to exactly one node
                // obtain the node for the section, create it on demand
                InMemoryNodeModel parentModel = getSubConfigurationParentModel();
                NodeSelector selector = parentModel.trackChildNodeWithCreation(null, name, this);
                return createSubConfigurationForTrackedNode(selector, this);
            }
        }
    }

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     *
     * @return the sub configuration for the global section
     */
    private SubnodeConfiguration getGlobalSection()
    {
        InMemoryNodeModel parentModel = getSubConfigurationParentModel();
        NodeSelector selector = new NodeSelector(null); // selects parent
        parentModel.trackNode(selector, this);
        GlobalSectionNodeModel model =
                new GlobalSectionNodeModel(this, selector);
        SubnodeConfiguration sub = new SubnodeConfiguration(this, model);
        initSubConfigurationForThisParent(sub);
        return sub;

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     * Tests if setting a node combiner causes an invalidation.
     */
    @Test
    public void testSetNodeCombiner()
    {
        NodeCombiner combiner = new UnionCombiner();
        config.setNodeCombiner(combiner);
        assertSame("Node combiner was not set", combiner, config
                .getNodeCombiner());
        listener.checkEvent(1, 0);
    }

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