Package org.apache.sling.scripting.jsp.jasper.xmlparser

Class TreeNode

java.lang.Object
org.apache.sling.scripting.jsp.jasper.xmlparser.TreeNode
public class TreeNode extends Object
Simplified implementation of a Node from a Document Object Model (DOM) parse of an XML document. This class is used to represent a DOM tree so that the XML parser's implementation of org.w3c.dom need not be visible to the remainder of Jasper.

WARNING - Construction of a new tree, or modifications to an existing one, are not thread-safe and such accesses must be synchronized.

Version:
$Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (Die, 24 Okt 2006) $
Author:
Craig R. McClanahan

  • Field Details

    • attributes

      protected HashMap attributes
      The attributes of this node, keyed by attribute name, Instantiated only if required.

    • body

      protected String body
      The body text associated with this node (if any).

    • children

      protected ArrayList children
      The children of this node, instantiated only if required.

    • name

      protected String name
      The name of this node.

    • parent

      protected TreeNode parent
      The parent node of this node.

  • Constructor Details

    • TreeNode

      public TreeNode(String name)
      Construct a new node with no parent.
      Parameters:
      name - The name of this node

    • TreeNode

      public TreeNode(String name, TreeNode parent)
      Construct a new node with the specified parent.
      Parameters:
      name - The name of this node
      parent - The node that is the parent of this node

  • Method Details

    • addAttribute

      public void addAttribute(String name, String value)
      Add an attribute to this node, replacing any existing attribute with the same name.
      Parameters:
      name - The attribute name to add
      value - The new attribute value

    • addChild

      public void addChild(TreeNode node)
      Add a new child node to this node.
      Parameters:
      node - The new child node

    • findAttribute

      public String findAttribute(String name)
      Return the value of the specified node attribute if it exists, or null otherwise.
      Parameters:
      name - Name of the requested attribute

    • findAttributes

      public Iterator findAttributes()
      Return an Iterator of the attribute names of this node. If there are no attributes, an empty Iterator is returned.

    • findChild

      public TreeNode findChild(String name)
      Return the first child node of this node with the specified name, if there is one; otherwise, return null.
      Parameters:
      name - Name of the desired child element

    • findChildren

      public Iterator findChildren()
      Return an Iterator of all children of this node. If there are no children, an empty Iterator is returned.

    • findChildren

      public Iterator findChildren(String name)
      Return an Iterator over all children of this node that have the specified name. If there are no such children, an empty Iterator is returned.
      Parameters:
      name - Name used to select children

    • getBody

      public String getBody()
      Return the body text associated with this node (if any).

    • getName

      public String getName()
      Return the name of this node.

    • removeAttribute

      public void removeAttribute(String name)
      Remove any existing value for the specified attribute name.
      Parameters:
      name - The attribute name to remove

    • removeNode

      public void removeNode(TreeNode node)
      Remove a child node from this node, if it is one.
      Parameters:
      node - The child node to remove

    • setBody

      public void setBody(String body)
      Set the body text associated with this node (if any).
      Parameters:
      body - The body text (if any)

    • toString

      public String toString()
      Return a String representation of this TreeNode.
      Overrides:
      toString in class Object

    • toString

      protected void toString(StringBuffer sb, int indent, TreeNode node)
      Append to the specified StringBuffer a character representation of this node, with the specified amount of indentation.
      Parameters:
      sb - The StringBuffer to append to
      indent - Number of characters of indentation
      node - The TreeNode to be printed