Module org.eclipse.persistence.core

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

Class SumNode

java.lang.Object

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

org.eclipse.persistence.internal.jpa.parsing.AggregateNode

org.eclipse.persistence.internal.jpa.parsing.SumNode

All Implemented Interfaces:

AliasableNode

public class SumNode
extends AggregateNode

INTERNAL

Purpose: Model a SUM

Responsibilities:

• Apply itself to a query correctly

Field Summary

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

alias, left, right, shouldGenerateExpression

Constructor Summary

Constructors

Constructor	Description
SumNode()

Method Summary

Modifier and Type	Method	Description
protected Expression	addAggregateExression(Expression expr)	INTERNAL
void	applyToQuery(ObjectLevelReadQuery theQuery, GenerationContext context)	INTERNAL Apply this node to the passed query
protected Object	calculateReturnType(Object argType, TypeHelper helper)	INTERNAL Helper method to calculate the return type of the SUM operation.
protected Class<?>	calculateReturnType(GenerationContext context)	INTERNAL This method calculates the return type of the SUM operation.
String	getAsString()	INTERNAL Get the string representation of this node.
void	validate(ParseTreeContext context)	INTERNAL Validate node and calculate its type.

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

generateExpression, isAggregateNode, isAliasableNode, resolveAttribute, resolveClass, setDistinct, usesDistinct

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

addToExpression, appendExpression, getAlias, getColumn, getLeft, getLine, getRight, getType, hasLeft, hasRight, isAttributeNode, isConstructorNode, isCountNode, isDivideNode, isDotNode, isEscape, isLiteralNode, isMapKeyNode, isMinusNode, isMultiplyNode, isNotNode, isParameterNode, isPlusNode, isSubqueryNode, isVariableNode, qualifyAttributeAccess, 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 Details

SumNode

public SumNode()

Method Details

applyToQuery

public void applyToQuery(ObjectLevelReadQuery theQuery,
 GenerationContext context)

INTERNAL Apply this node to the passed query

Overrides:

applyToQuery in class Node

validate

public void validate(ParseTreeContext context)

INTERNAL Validate node and calculate its type.

Overrides:

validate in class Node

addAggregateExression

protected Expression addAggregateExression(Expression expr)

INTERNAL

Specified by:

addAggregateExression in class AggregateNode

calculateReturnType

protected Class<?> calculateReturnType(GenerationContext context)

INTERNAL This method calculates the return type of the SUM operation.

calculateReturnType

protected Object calculateReturnType(Object argType,
 TypeHelper helper)

INTERNAL Helper method to calculate the return type of the SUM operation.

getAsString

public String getAsString()

INTERNAL Get the string representation of this node.

Overrides:

getAsString in class Node