AggregateNode (EclipseLink Core 3.0.3-RC2 API)

java.lang.Object
- org.eclipse.persistence.internal.jpa.parsing.Node
- - org.eclipse.persistence.internal.jpa.parsing.AggregateNode

All Implemented Interfaces:

AliasableNode

Direct Known Subclasses:

AvgNode, CountNode, MaxNode, MinNode, SumNode
```
public abstract class AggregateNode
extends Node
implements AliasableNode
```

Field Summary
- Fields inherited from class org.eclipse.persistence.internal.jpa.parsing.Node
  alias, left, right, shouldGenerateExpression

Constructor Summary

Constructors
Constructor Description

AggregateNode()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract Expression`	`addAggregateExression(Expression expr)`	INTERNAL
`Expression`	`generateExpression(GenerationContext context)`	INTERNAL Return a EclipseLink expression generated using the left node
`boolean`	`isAggregateNode()`	INTERNAL Is this node an Aggregate node
`boolean`	`isAliasableNode()`
`String`	`resolveAttribute()`	INTERNAL
`Class`	`resolveClass(GenerationContext context)`	resolveClass: Answer the class associated with my left node.
`void`	`setDistinct(boolean distinct)`
`boolean`	`usesDistinct()`

Methods inherited from class org.eclipse.persistence.internal.jpa.parsing.Node
addToExpression, appendExpression, applyToQuery, getAlias, getAsString, 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, 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

- Constructor Detail
  - AggregateNode
```
public AggregateNode()
```
- Method Detail
  - resolveAttribute
```
public String resolveAttribute()
```
    INTERNAL
    
    Overrides:
    
    resolveAttribute in class Node
  - resolveClass
```
public Class resolveClass(GenerationContext context)
```
    resolveClass: Answer the class associated with my left node.
    
    Overrides:
    
    resolveClass in class Node
  - isAggregateNode
```
public boolean isAggregateNode()
```
    INTERNAL Is this node an Aggregate node
    
    Overrides:
    
    isAggregateNode in class Node
  - usesDistinct
```
public boolean usesDistinct()
```
  - setDistinct
```
public void setDistinct(boolean distinct)
```
  - generateExpression
```
public Expression generateExpression(GenerationContext context)
```
    INTERNAL Return a EclipseLink expression generated using the left node
    
    Overrides:
    
    generateExpression in class Node
  - addAggregateExression
```
protected abstract Expression addAggregateExression(Expression expr)
```
    INTERNAL
  - isAliasableNode
```
public boolean isAliasableNode()
```
    Overrides:
    
    isAliasableNode in class Node