TreeNode

java.lang.Object
- org.apache.jasper.xmlparser.TreeNode

```
public class TreeNode
extends java.lang.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.

Field Summary

Fields
Modifier and Type	Field and Description
`protected java.util.HashMap<java.lang.String,java.lang.String>`	`attributes` The attributes of this node, keyed by attribute name, Instantiated only if required.
`protected java.lang.String`	`body` The body text associated with this node (if any).
`protected java.util.ArrayList<TreeNode>`	`children` The children of this node, instantiated only if required.
`protected java.lang.String`	`name` The name of this node.
`protected TreeNode`	`parent` The parent node of this node.

Constructor Summary

Constructors
Constructor and Description
`TreeNode(java.lang.String name)` Construct a new node with no parent.
`TreeNode(java.lang.String name, TreeNode parent)` Construct a new node with the specified parent.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addAttribute(java.lang.String name, java.lang.String value)` Add an attribute to this node, replacing any existing attribute with the same name.
`void`	`addChild(TreeNode node)` Add a new child node to this node.
`java.lang.String`	`findAttribute(java.lang.String name)` Return the value of the specified node attribute if it exists, or `null` otherwise.
`java.util.Iterator<java.lang.String>`	`findAttributes()` Return an Iterator of the attribute names of this node.
`TreeNode`	`findChild(java.lang.String name)` Return the first child node of this node with the specified name, if there is one; otherwise, return `null`.
`java.util.Iterator<TreeNode>`	`findChildren()` Return an Iterator of all children of this node.
`java.util.Iterator<TreeNode>`	`findChildren(java.lang.String name)` Return an Iterator over all children of this node that have the specified name.
`java.lang.String`	`getBody()` Return the body text associated with this node (if any).
`java.lang.String`	`getName()` Return the name of this node.
`void`	`removeAttribute(java.lang.String name)` Remove any existing value for the specified attribute name.
`void`	`removeNode(TreeNode node)` Remove a child node from this node, if it is one.
`void`	`setBody(java.lang.String body)` Set the body text associated with this node (if any).
`java.lang.String`	`toString()` Return a String representation of this TreeNode.
`protected void`	`toString(java.lang.StringBuilder sb, int indent, TreeNode node)` Append to the specified StringBuilder a character representation of this node, with the specified amount of indentation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - attributes
```
protected java.util.HashMap<java.lang.String,java.lang.String> attributes
```
    The attributes of this node, keyed by attribute name, Instantiated only if required.
  - body
```
protected java.lang.String body
```
    The body text associated with this node (if any).
  - children
```
protected java.util.ArrayList<TreeNode> children
```
    The children of this node, instantiated only if required.
  - name
```
protected java.lang.String name
```
    The name of this node.
  - parent
```
protected TreeNode parent
```
    The parent node of this node.
- Constructor Detail
  - TreeNode
```
public TreeNode(java.lang.String name)
```
    Construct a new node with no parent.
    
    Parameters:
    
    name - The name of this node
  - TreeNode
```
public TreeNode(java.lang.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 Detail
  - addAttribute
```
public void addAttribute(java.lang.String name,
                         java.lang.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 java.lang.String findAttribute(java.lang.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 java.util.Iterator<java.lang.String> 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(java.lang.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 java.util.Iterator<TreeNode> findChildren()
```
    Return an Iterator of all children of this node. If there are no children, an empty Iterator is returned.
  - findChildren
```
public java.util.Iterator<TreeNode> findChildren(java.lang.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 java.lang.String getBody()
```
    Return the body text associated with this node (if any).
  - getName
```
public java.lang.String getName()
```
    Return the name of this node.
  - removeAttribute
```
public void removeAttribute(java.lang.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(java.lang.String body)
```
    Set the body text associated with this node (if any).
    
    Parameters:
    
    body - The body text (if any)
  - toString
```
public java.lang.String toString()
```
    Return a String representation of this TreeNode.
    
    Overrides:
    
    toString in class java.lang.Object
  - toString
```
protected void toString(java.lang.StringBuilder sb,
                        int indent,
                        TreeNode node)
```
    Append to the specified StringBuilder a character representation of this node, with the specified amount of indentation.
    
    Parameters:
    
    sb - The StringBuilder to append to
    
    indent - Number of characters of indentation
    
    node - The TreeNode to be printed

Class TreeNode

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

attributes

body

children

name

parent

Constructor Detail

TreeNode

TreeNode

Method Detail

addAttribute

addChild

findAttribute

findAttributes

findChild

findChildren

findChildren

getBody

getName

removeAttribute

removeNode

setBody

toString

toString