EqualsNode

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

```
public class EqualsNode
extends BinaryOperatorNode
```
INTERNAL
Purpose: Represent an '=' in EJBQL
Responsibilities:
- Generate the correct expression for an '=' in EJBQL
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

EqualsNode()
EqualsNode constructor comment.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Expression`	`generateExpression(GenerationContext context)`	Resolve the expression.
`java.lang.String`	`getAsString()`	INTERNAL Get the string representation of this node.
`void`	`validate(ParseTreeContext context)`	INTERNAL Validate node and calculates its type.

Methods inherited from class org.eclipse.persistence.internal.jpa.parsing.Node
addToExpression, appendExpression, applyToQuery, getAlias, getColumn, getLeft, getLine, getRight, getType, hasLeft, hasRight, isAggregateNode, isAliasableNode, 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

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - EqualsNode
```
public EqualsNode()
```
    EqualsNode constructor comment.
- Method Detail
  - validate
```
public void validate(ParseTreeContext context)
```
    INTERNAL Validate node and calculates its type.
    
    Overrides:
    
    validate in class BinaryOperatorNode
  - generateExpression
```
public Expression generateExpression(GenerationContext context)
```
    Resolve the expression. The steps are: 1. Set the expressionBuilder for the left and right nodes 2. Generate the expression for the left node 3. Add the .equals to the where clause returned from step 2 4. Generate the expression for the right side and use it as the parameter for the .equals() 5. Return the completed where clause to the caller
    
    Overrides:
    
    generateExpression in class Node
  - getAsString
```
public java.lang.String getAsString()
```
    INTERNAL Get the string representation of this node.
    
    Overrides:
    
    getAsString in class Node