Example usage for org.apache.poi.poifs.filesystem POIFSDocumentPath length

Introduction

In this page you can find the example usage for org.apache.poi.poifs.filesystem POIFSDocumentPath length.

Prototype

public int length() 

Source Link

Usage

From source file:poi.poifs.poibrowser.TreeReaderListener.java

License:Apache License

/**
 * <p>Locates the parent node for a document entry in the tree
 * model. If the parent node does not yet exist it will be
 * created, too. This is done recursively, if needed.</p>
 *
 * @param path The tree node for this path is located.
 *
 * @param fsName The name of the POI filesystem. This is just a
 * string which is displayed in the tree at the top lovel.
 *
 * @param root The root node.//from   ww  w. j  a  v a  2 s  .c  om
 */
private MutableTreeNode getNode(final POIFSDocumentPath path, final String fsName, final MutableTreeNode root) {
    MutableTreeNode n = (MutableTreeNode) pathToNode.get(path);
    if (n != null)
        /* Node found in map, just return it. */
        return n;
    if (path.length() == 0) {
        /* This is the root path of the POI filesystem. Its tree
         * node is resp. must be located below the tree node of
         * the POI filesystem itself. This is a tree node with the
         * POI filesystem's name (this the operating system file's
         * name) as its key it the path-to-node map. */
        n = (MutableTreeNode) pathToNode.get(fsName);
        if (n == null) {
            /* A tree node for the POI filesystem does not yet
             * exist. */
            n = new DefaultMutableTreeNode(fsName);
            pathToNode.put(fsName, n);
            root.insert(n, 0);
        }
        return n;
    }
    /* else - The path is somewhere down in the POI filesystem's
     * hierarchy. We need the tree node of this path's parent
     * and attach our new node to it. */
    final String name = path.getComponent(path.length() - 1);
    final POIFSDocumentPath parentPath = path.getParent();
    final MutableTreeNode parentNode = getNode(parentPath, fsName, root);
    n = new DefaultMutableTreeNode(name);
    pathToNode.put(path, n);
    parentNode.insert(n, 0);
    return n;
}

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