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

Class SubstringNode

java.lang.Object

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

org.eclipse.persistence.internal.jpa.parsing.FunctionalExpressionNode

org.eclipse.persistence.internal.jpa.parsing.StringFunctionNode

org.eclipse.persistence.internal.jpa.parsing.SubstringNode

All Implemented Interfaces:

AliasableNode

public class SubstringNode
extends StringFunctionNode

INTERNAL

Purpose: Represent a SUBSTRING

Responsibilities:

• Generate the correct expression for SUBSTRING

Since:

TopLink 4.0

Author:

Jon Driscoll and Joel Lucuik

Field Summary

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

alias, left, right, shouldGenerateExpression

Constructor Summary

Constructors

Constructor	Description
SubstringNode()	SubstringNode constructor comment.

Method Summary

Modifier and Type	Method	Description
Expression	generateExpression(GenerationContext context)	INTERNAL Generate the EclipseLink expression for this node
Node	qualifyAttributeAccess(ParseTreeContext context)	INTERNAL Check the child nodes for an unqualified field access and if so, replace them by a qualified field access.
void	setStartPosition(Node newStartPosition)	Insert the method's description here.
void	setStringLength(Node newStringLength)	Insert the method's description here.
void	validate(ParseTreeContext context)	INTERNAL Validate node and calculate its type.

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

applyToQuery, isAliasableNode

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

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

Constructor Detail

SubstringNode

public SubstringNode()

SubstringNode constructor comment.

Method Detail

qualifyAttributeAccess

public Node qualifyAttributeAccess(ParseTreeContext context)

INTERNAL Check the child nodes for an unqualified field access and if so, replace them by a qualified field access.

Overrides:

qualifyAttributeAccess in class Node

validate

public void validate(ParseTreeContext context)

INTERNAL Validate node and calculate its type.

Overrides:

validate in class Node

generateExpression

public Expression generateExpression(GenerationContext context)

INTERNAL Generate the EclipseLink expression for this node

Overrides:

generateExpression in class Node

setStartPosition

public void setStartPosition(Node newStartPosition)

Insert the method's description here. Creation date: (1/19/01 3:41:55 PM)

Parameters:

newStartPosition - java.lang.Integer

setStringLength

public void setStringLength(Node newStringLength)

Insert the method's description here. Creation date: (1/19/01 3:42:26 PM)

Parameters:

newStringLength - java.lang.Integer