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java.lang.Objectorg.exolab.castor.jdo.oql.ParseTreeNode
public class ParseTreeNode
A Node in the Parse tree which is generated by the 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.
Field Summary |
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Fields inherited from interface org.exolab.castor.jdo.oql.TokenTypes |
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ARROW, BOOLEAN_LITERAL, CHAR_LITERAL, COLON, COMMA, CONCAT, DATE_LITERAL, DIVIDE, DOLLAR, DOT, DOUBLE_LITERAL, END_OF_QUERY, EQUAL, GT, GTE, IDENTIFIER, KEYWORD_ABS, KEYWORD_AND, KEYWORD_AS, KEYWORD_ASC, KEYWORD_AVG, KEYWORD_BETWEEN, KEYWORD_BY, KEYWORD_COUNT, KEYWORD_DESC, KEYWORD_DISTINCT, KEYWORD_FROM, KEYWORD_IN, KEYWORD_IS_DEFINED, KEYWORD_IS_UNDEFINED, KEYWORD_LIKE, KEYWORD_LIMIT, KEYWORD_LIST, KEYWORD_MAX, KEYWORD_MIN, KEYWORD_MOD, KEYWORD_NIL, KEYWORD_NOT, KEYWORD_OFFSET, KEYWORD_OR, KEYWORD_ORDER, KEYWORD_SELECT, KEYWORD_SUM, KEYWORD_UNDEFINED, KEYWORD_WHERE, LONG_LITERAL, LPAREN, LT, LTE, MINUS, NOT_EQUAL, PLUS, RPAREN, STRING_LITERAL, TIME_LITERAL, TIMES, TIMESTAMP_LITERAL |
Constructor Summary | |
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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. |
Method Summary | |
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void |
addChild(ParseTreeNode child)
Adds a new node as a child of this node. |
java.util.Enumeration |
children()
Accessor method for an enumeration 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()
|
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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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 nodeMethod Detail |
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public 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.Enumeration children()
public ParseTreeNode getChild(int index)
index
- the index of the child to retrieve.
public int getChildCount()
public Token getToken()
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