org.apache.jdo.impl.jdoql.tree
Class NotExpr

java.lang.Object
  extended byantlr.BaseAST
      extended byantlr.CommonAST
          extended byorg.apache.jdo.impl.jdoql.jdoqlc.JDOQLAST
              extended byorg.apache.jdo.impl.jdoql.tree.NodeImpl
                  extended byorg.apache.jdo.impl.jdoql.tree.Expr
                      extended byorg.apache.jdo.impl.jdoql.tree.UnaryExpr
                          extended byorg.apache.jdo.impl.jdoql.tree.NotExpr
All Implemented Interfaces:
antlr.collections.AST, java.lang.Cloneable, Expression, Node, NotExpression, java.io.Serializable, UnaryExpression

public final class NotExpr
extends UnaryExpr
implements NotExpression

This node represents a logical not operator. A logical not operator is a unary expression. The string representation of this operator is !.

Author:
Michael Watzek
See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.apache.jdo.impl.jdoql.tree.NodeImpl
children, clazz, msg, object, parent
 
Fields inherited from class org.apache.jdo.impl.jdoql.jdoqlc.JDOQLAST
column, line, typeInfo
 
Fields inherited from class antlr.CommonAST
 
Fields inherited from class antlr.BaseAST
down, right
 
Constructor Summary
  NotExpr()
          The noarg constructor is needed for ANTLR support and deserialization.
(package private) NotExpr(Expression expr)
          This constructor is called by the query tree instance.
  NotExpr(antlr.Token token)
          The noarg constructor is needed for ANTLR support.
 
Method Summary
 void arrive(NodeVisitor visitor)
          Delegates to the argument visitor.
 java.lang.Object leave(NodeVisitor visitor, java.lang.Object[] results)
          Delegates to the argument visitor.
 
Methods inherited from class org.apache.jdo.impl.jdoql.tree.UnaryExpr
getExpression
 
Methods inherited from class org.apache.jdo.impl.jdoql.tree.NodeImpl
ASTToChildren, clone, getChildren, getJavaClass, getObject, getParent, getTokenType, setChildren, setObject, setParent, toString, walkNextChild
 
Methods inherited from class org.apache.jdo.impl.jdoql.jdoqlc.JDOQLAST
getColumn, getLine, getTypeInfo, initialize, initialize, initialize, setColumn, setLine, setTypeInfo, treeToString
 
Methods inherited from class antlr.CommonAST
getText, getType, initialize, setText, setType
 
Methods inherited from class antlr.BaseAST
addChild, decode, encode, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, getNumberOfChildren, getTokenNames, removeChildren, setFirstChild, setNextSibling, setVerboseStringConversion, toStringList, toStringTree, xmlSerialize, xmlSerializeNode, xmlSerializeRootClose, xmlSerializeRootOpen
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.apache.jdo.jdoql.tree.UnaryExpression
getExpression
 
Methods inherited from interface org.apache.jdo.jdoql.tree.Node
getChildren, getJavaClass, getObject, getParent, getTokenType, setObject, setParent, walkNextChild
 

Constructor Detail

NotExpr

public NotExpr()
The noarg constructor is needed for ANTLR support and deserialization. The caller must make sure to set the ANTLR tree structure himself or, call setChildren optionally.


NotExpr

public NotExpr(antlr.Token token)
The noarg constructor is needed for ANTLR support. The caller must make sure to set the ANTLR tree structure himself or, call setChildren optionally.


NotExpr

NotExpr(Expression expr)
This constructor is called by the query tree instance. It delegates to the super class constructor.

Parameters:
expr - the expression to compute the complement for
Method Detail

arrive

public void arrive(NodeVisitor visitor)
Delegates to the argument visitor.

Specified by:
arrive in interface Node
Overrides:
arrive in class NodeImpl
Parameters:
visitor - the node visitor

leave

public java.lang.Object leave(NodeVisitor visitor,
                              java.lang.Object[] results)
Delegates to the argument visitor.

Specified by:
leave in interface Node
Overrides:
leave in class NodeImpl
Parameters:
visitor - the node visitor
results - the result array
Returns:
the object returned by the visitor instance