FromNode (EclipseLink Core 3.0.3-RC1 API)

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

```
public class FromNode
extends MajorNode
```
INTERNAL
Purpose: Represent a FROM
Responsibilities:
- Determines the context for the Parse Tree
- Determine the reference class for a query
- Handle any FROM ... IN clauses
Since:

TopLink 5.0

Author:

Jon Driscoll

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

Constructor Summary

Constructors
Constructor Description

FromNode()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List`	`getDeclarations()`
`String`	`getFirstVariable()`
`Node`	`qualifyAttributeAccess(ParseTreeContext context)`	INTERNAL Check the declaration nodes for a path expression starting with a unqualified field access and if so, replace it by a qualified field access.
`void`	`setDeclarations(List decls)`
`void`	`validate(ParseTreeContext context)`	INTERNAL Validate the current node.

Methods inherited from class org.eclipse.persistence.internal.jpa.parsing.MajorNode
getContext, setContext

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

- Constructor Detail
  - FromNode
```
public FromNode()
```
- Method Detail
  - getFirstVariable
```
public String getFirstVariable()
```
  - getDeclarations
```
public List getDeclarations()
```
  - setDeclarations
```
public void setDeclarations(List decls)
```
  - qualifyAttributeAccess
```
public Node qualifyAttributeAccess(ParseTreeContext context)
```
    INTERNAL Check the declaration nodes for a path expression starting with a unqualified field access and if so, replace it by a qualified field access.
    
    Overrides:
    
    qualifyAttributeAccess in class Node
  - validate
```
public void validate(ParseTreeContext context)
```
    INTERNAL Validate the current node.
    
    Overrides:
    
    validate in class Node