Package org.eclipse.persistence.internal.jpa.parsing

Class LiteralNode

java.lang.Object

org.eclipse.persistence.internal.jpa.parsing.Node

org.eclipse.persistence.internal.jpa.parsing.LiteralNode

All Implemented Interfaces:

AliasableNode

Direct Known Subclasses:

BooleanLiteralNode, DoubleLiteralNode, FloatLiteralNode, IntegerLiteralNode, LongLiteralNode, StringLiteralNode, TemporalLiteralNode

public class LiteralNode
extends Node
implements AliasableNode

INTERNAL

Purpose: Superclass for literals (String, Integer, Float, Character, ...)

Responsibilities:

• Maintain the literal being represented
• Print to a string
• Answer if the node is completely built

Since:

TopLink 4.0

Author:

Jon Driscoll and Joel Lucuik

Field Summary

Fields

Modifier and Type	Field	Description
java.lang.Object	literal

Fields inherited from class org.eclipse.persistence.internal.jpa.parsing.Node

alias, left, right, shouldGenerateExpression

Constructor Summary

Constructors

Constructor	Description
LiteralNode()	Return a new LiteralNode.

Method Summary

Modifier and Type	Method	Description
void	applyToQuery(ObjectLevelReadQuery theQuery, GenerationContext context)	INTERNAL Apply this node to the passed query
Expression	generateExpression(GenerationContext context)	INTERNAL Generate the a new EclipseLink ConstantExpression for this node.
java.lang.String	getAsString()	INTERNAL Return the literal
java.lang.Object	getLiteral()	Insert the method's description here.
boolean	isAliasableNode()
boolean	isLiteralNode()	INTERNAL Is this a literal node
void	setLiteral(java.lang.Object newLiteral)	Insert the method's description here.
java.lang.String	toString(int indent)

Methods inherited from class org.eclipse.persistence.internal.jpa.parsing.Node

addToExpression, appendExpression, getAlias, getColumn, getLeft, getLine, getRight, getType, hasLeft, hasRight, isAggregateNode, isAttributeNode, isConstructorNode, isCountNode, isDivideNode, isDotNode, isEscape, isMapKeyNode, isMinusNode, isMultiplyNode, isNotNode, isParameterNode, isPlusNode, isSubqueryNode, isVariableNode, qualifyAttributeAccess, resolveAttribute, resolveClass, resolveClass, resolveMapping, resolveMapping, setAlias, setColumn, setLeft, setLine, setRight, setType, toString, toStringDisplayName, toStringIndent, validate, validateParameter

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.persistence.internal.jpa.parsing.AliasableNode

getAlias, setAlias

Field Detail

literal

public java.lang.Object literal

Constructor Detail

LiteralNode

public LiteralNode()

Return a new LiteralNode.

Method Detail

applyToQuery

public void applyToQuery(ObjectLevelReadQuery theQuery,
                         GenerationContext context)

INTERNAL Apply this node to the passed query

Overrides:

applyToQuery in class Node

generateExpression

public Expression generateExpression(GenerationContext context)

INTERNAL Generate the a new EclipseLink ConstantExpression for this node.

Overrides:

generateExpression in class Node

getAsString

public java.lang.String getAsString()

INTERNAL Return the literal

Overrides:

getAsString in class Node

getLiteral

public java.lang.Object getLiteral()

Insert the method's description here. Creation date: (12/21/00 10:51:48 AM)

Returns:

java.lang.Object

isLiteralNode

public boolean isLiteralNode()

INTERNAL Is this a literal node

Overrides:

isLiteralNode in class Node

setLiteral

public void setLiteral(java.lang.Object newLiteral)

Insert the method's description here. Creation date: (12/21/00 10:51:48 AM)

Parameters:

newLiteral - java.lang.Object

toString

public java.lang.String toString(int indent)

Overrides:

toString in class Node

isAliasableNode

public boolean isAliasableNode()

Overrides:

isAliasableNode in class Node