org.exolab.castor.jdo.oql
public final class ParseTreeNode extends java.lang.Object
Parser
as the tree
representation of the OQL Query. Each node has a link back to the parent node
(null for the root node), and a vector of children. Each node contains the
Token
which represents that part of the tree.Constructor and Description |
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ParseTreeNode(ParseTreeNode parent,
Token token)
Creates a new Node with supplied parent and token.
|
ParseTreeNode(Token token)
Creates a new root Node with supplied token.
|
Modifier and Type | Method and Description |
---|---|
void |
addChild(ParseTreeNode child)
Adds a new node as a child of this node.
|
java.util.Iterator<ParseTreeNode> |
children()
Accessor method for an iteration of this nodes children.
|
ParseTreeNode |
getChild(int index)
Accessor method for individual children of this node.
|
int |
getChildCount()
Accessor method for the number of children of this node.
|
ParseTreeNode |
getParent()
Accessor method for the parent of this node.
|
Token |
getToken()
Accessor method for the token.
|
boolean |
isLeaf()
Specifies whether this node is a leaf.
|
boolean |
isRoot()
Specifies whether this node is the root of a tree.
|
void |
setParent(ParseTreeNode parent)
Changes the parent of this node.
|
java.lang.String |
toString() |
java.lang.String |
toStringEx() |
public ParseTreeNode(ParseTreeNode parent, Token token)
parent
- The parent of this node (null for root)token
- The token data in this nodepublic ParseTreeNode(Token token)
token
- The token data in this nodepublic java.lang.String toString()
toString
in class java.lang.Object
public java.lang.String toStringEx()
public void setParent(ParseTreeNode parent)
parent
- The new parent.public void addChild(ParseTreeNode child)
child
- The new childpublic boolean isRoot()
public boolean isLeaf()
public ParseTreeNode getParent()
public java.util.Iterator<ParseTreeNode> children()
public ParseTreeNode getChild(int index)
index
- the index of the child to retrieve.public int getChildCount()
public Token getToken()
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