Examples of org.apache.commons.configuration.tree.ConfigurationNode

Package org.apache.commons.configuration.tree

Examples of org.apache.commons.configuration.tree.ConfigurationNode

org.apache.commons.configuration.tree.ConfigurationNode

Definition of an interface for the nodes of a hierarchical configuration.

This interface defines a tree like structure for configuration data. A node has a value and can have an arbitrary number of children and attributes.
@since 1.3 @author Oliver Heger @version $Id: ConfigurationNode.java 1152652 2011-07-31 21:49:49Z ebourg $

        if (getSubnodeKey() != null)
        {
            // construct the correct subnode key
            // determine path to root node
            List lstPathToRoot = new ArrayList();
            ConfigurationNode top = super.getRootNode();
            ConfigurationNode nd = node;
            while (nd != top)
            {
                lstPathToRoot.add(nd);
                nd = nd.getParentNode();
            }


            // construct the keys for the nodes on this path
            Collections.reverse(lstPathToRoot);
            String key = getSubnodeKey();

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     * @param conf the parent config
     * @return the root node for the subnode config
     */
    protected ConfigurationNode getSubnodeRoot(HierarchicalConfiguration conf)
    {
        ConfigurationNode root = conf.getRoot();
        return root.getChild(0).getChild(0);
    }

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        else
        {
            List list = new ArrayList();
            for (Iterator it = nodes.iterator(); it.hasNext();)
            {
                ConfigurationNode node = (ConfigurationNode) it.next();
                if (node.getValue() != null)
                {
                    list.add(node.getValue());
                }
            }


            if (list.size() < 1)
            {

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     * @param obj the value of the new property
     */
    protected void addPropertyDirect(String key, Object obj)
    {
        NodeAddData data = getExpressionEngine().prepareAdd(getRootNode(), key);
        ConfigurationNode node = processNodeAddData(data);
        node.setValue(obj);
    }

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        {
            return;
        }


        fireEvent(EVENT_ADD_NODES, key, nodes, true);
        ConfigurationNode parent;
        List target = fetchNodeList(key);
        if (target.size() == 1)
        {
            // existing unique key
            parent = (ConfigurationNode) target.get(0);
        }
        else
        {
            // otherwise perform an add operation
            parent = processNodeAddData(getExpressionEngine().prepareAdd(
                    getRootNode(), key));
        }


        if (parent.isAttribute())
        {
            throw new IllegalArgumentException(
                    "Cannot add nodes to an attribute node!");
        }
        for (Iterator it = nodes.iterator(); it.hasNext();)
        {
            ConfigurationNode child = (ConfigurationNode) it.next();
            if (child.isAttribute())
            {
                parent.addAttribute(child);
            }
            else
            {

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        HierarchicalConfiguration result = new HierarchicalConfiguration();
        CloneVisitor visitor = new CloneVisitor();


        for (Iterator it = nodes.iterator(); it.hasNext();)
        {
            ConfigurationNode nd = (ConfigurationNode) it.next();
            nd.visit(visitor);


            for (Iterator it2 = visitor.getClone().getChildren().iterator(); it2.hasNext();)
            {
                result.getRootNode().addChild((ConfigurationNode) it2.next());
            }

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        DefinedKeysVisitor visitor = new DefinedKeysVisitor(prefix);
        List nodes = fetchNodeList(prefix);


        for (Iterator itNodes = nodes.iterator(); itNodes.hasNext();)
        {
            ConfigurationNode node = (ConfigurationNode) itNodes.next();
            for (Iterator it = node.getChildren().iterator(); it.hasNext();)
            {
                ((ConfigurationNode) it.next()).visit(visitor);
            }
            for (Iterator it = node.getAttributes().iterator(); it.hasNext();)
            {
                ((ConfigurationNode) it.next()).visit(visitor);
            }
        }

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     *
     * @param node the node to be removed
     */
    protected void removeNode(ConfigurationNode node)
    {
        ConfigurationNode parent = node.getParentNode();
        if (parent != null)
        {
            parent.removeChild(node);
            if (!nodeDefined(parent))
            {
                removeNode(parent);
            }
        }

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     * @return the new node
     * @since 1.3
     */
    private ConfigurationNode processNodeAddData(NodeAddData data)
    {
        ConfigurationNode node = data.getParent();


        // Create missing nodes on the path
        for (Iterator it = data.getPathNodes().iterator(); it.hasNext();)
        {
            ConfigurationNode child = createNode((String) it.next());
            node.addChild(child);
            node = child;
        }


        // Add new target node
        ConfigurationNode child = createNode(data.getNewNodeName());
        if (data.isAttribute())
        {
            node.addAttribute(child);
        }
        else

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        }


        else
        {
            Iterator it = configurations.iterator();
            ConfigurationNode node = ((ConfigData) it.next())
                    .getTransformedRoot();
            while (it.hasNext())
            {
                node = getNodeCombiner().combine(node,
                        ((ConfigData) it.next()).getTransformedRoot());

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