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

Package org.apache.commons.configuration.tree

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

org.apache.commons.configuration.tree.NodeSelector

A class for selecting a specific node based on a key or a set of keys.

An instance of this class is initialized with the key of a node. It is also possible to concatenate multiple keys - e.g. if a sub key is to be constructed from another sub key. {@code NodeSelector} provides the{@code select()} method which evaluates the wrapped keys on a specified rootnode and returns the resulting unique target node. The class expects that the key(s) stored in an instance select exactly one target node. If this is not the case, result is null indicating that the selection criteria are not sufficient.

Implementation node: Instances of this class are immutable. They can be shared between arbitrary components.
@version $Id: NodeSelector.java 1588832 2014-04-20 19:36:16Z oheger $ @since 2.0

            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);

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     * @return a {@code NodeSelector} for initializing a sub configuration
     * @since 2.0
     */
    protected NodeSelector getSubConfigurationNodeSelector(String key)
    {
        return new NodeSelector(key);
    }

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     * @return the new sub configuration
     */
    private BaseHierarchicalConfiguration createConnectedSubConfiguration(
            String key)
    {
        NodeSelector selector = getSubConfigurationNodeSelector(key);
        getSubConfigurationParentModel().trackNode(selector, this);
        return createSubConfigurationForTrackedNode(selector, this);
    }

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Related Classes of org.apache.commons.configuration.tree.NodeSelector

org.apache.commons.configuration.BaseHierarchicalConfiguration

org.apache.commons.configuration.INIConfiguration

org.apache.commons.lang3.builder.ToStringBuilder

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