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.
Modifier and Type | Field and Description |
---|---|
protected HashMap |
attributes
The attributes of this node, keyed by attribute name,
Instantiated only if required.
|
protected String |
body
The body text associated with this node (if any).
|
protected ArrayList |
children
The children of this node, instantiated only if required.
|
protected String |
name
The name of this node.
|
protected TreeNode |
parent
The parent node of this node.
|
Constructor and Description |
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TreeNode(String name)
Construct a new node with no parent.
|
TreeNode(String name,
TreeNode parent)
Construct a new node with the specified parent.
|
Modifier and Type | Method and Description |
---|---|
void |
addAttribute(String name,
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.
|
String |
findAttribute(String name) |
Iterator |
findAttributes() |
TreeNode |
findChild(String name) |
Iterator |
findChildren() |
Iterator |
findChildren(String name) |
String |
getBody() |
String |
getName() |
void |
removeAttribute(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(String body)
Set the body text associated with this node (if any).
|
String |
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.
|
protected HashMap attributes
protected String body
protected ArrayList children
protected String name
protected TreeNode parent
public TreeNode(String name)
name
- The name of this nodepublic void addAttribute(String name, String value)
name
- The attribute name to addvalue
- The new attribute valuepublic void addChild(TreeNode node)
node
- The new child nodepublic String findAttribute(String name)
name
- Name of the requested attributenull
otherwise.public Iterator findAttributes()
public TreeNode findChild(String name)
name
- Name of the desired child elementnull
.public Iterator findChildren()
public Iterator findChildren(String name)
name
- Name used to select childrenpublic String getBody()
public String getName()
public void removeAttribute(String name)
name
- The attribute name to removepublic void removeNode(TreeNode node)
node
- The child node to removepublic void setBody(String body)
body
- The body text (if any)public String toString()
protected void toString(StringBuffer sb, int indent, TreeNode node)
sb
- The StringBuffer to append toindent
- Number of characters of indentationnode
- The TreeNode to be printedCopyright © 2000–2020 Apache Software Foundation. All rights reserved.