Class LengthNode
- java.lang.Object
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- org.eclipse.persistence.internal.jpa.parsing.Node
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- org.eclipse.persistence.internal.jpa.parsing.FunctionalExpressionNode
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- org.eclipse.persistence.internal.jpa.parsing.StringFunctionNode
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- org.eclipse.persistence.internal.jpa.parsing.LengthNode
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- All Implemented Interfaces:
AliasableNode
public class LengthNode extends StringFunctionNode
INTERNALPurpose: Used to resolve the LENGTH Function in EJBQL
Responsibilities:
- Generate the correct expression for a LENGTH in EJBQL
- Since:
- TopLink 4.0
- Author:
- Jon Driscoll and Joel Lucuik
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Field Summary
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Fields inherited from class org.eclipse.persistence.internal.jpa.parsing.Node
alias, left, right, shouldGenerateExpression
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Constructor Summary
Constructors Constructor Description LengthNode()
LengthNode constructor comment.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Expression
generateExpression(GenerationContext context)
INTERNAL Generate the EclipseLink expression for this nodevoid
validate(ParseTreeContext context)
INTERNAL Validate the current node and calculates its type.-
Methods inherited from class org.eclipse.persistence.internal.jpa.parsing.FunctionalExpressionNode
applyToQuery, isAliasableNode
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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, qualifyAttributeAccess, resolveAttribute, resolveClass, resolveClass, resolveMapping, resolveMapping, setAlias, setColumn, setLeft, setLine, setRight, setType, toString, toString, toStringDisplayName, toStringIndent, validateParameter
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.eclipse.persistence.internal.jpa.parsing.AliasableNode
getAlias, setAlias
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Method Detail
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validate
public void validate(ParseTreeContext context)
INTERNAL Validate the current node and calculates its type.
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generateExpression
public Expression generateExpression(GenerationContext context)
INTERNAL Generate the EclipseLink expression for this node- Overrides:
generateExpression
in classNode
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