oracle.toplink.essentials.internal.parsing

Class FromNode

java.lang.Object

oracle.toplink.essentials.internal.parsing.Node

oracle.toplink.essentials.internal.parsing.MajorNode

oracle.toplink.essentials.internal.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 oracle.toplink.essentials.internal.parsing.Node

left, right, shouldGenerateExpression

Constructor Summary

Constructors

Constructor and Description
FromNode()

Method Summary

Modifier and Type	Method and Description
java.util.List	getDeclarations()
java.lang.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(java.util.List decls)
void	validate(ParseTreeContext context) INTERNAL Validate the current node.

Methods inherited from class oracle.toplink.essentials.internal.parsing.MajorNode

getContext, setContext

Methods inherited from class oracle.toplink.essentials.internal.parsing.Node

addToExpression, appendExpression, applyToQuery, generateExpression, getAsString, getColumn, getLeft, getLine, getRight, getType, hasLeft, hasRight, isAggregateNode, isAttributeNode, isConstructorNode, isCountNode, isDivideNode, isDotNode, isEscape, isLiteralNode, isMinusNode, isMultiplyNode, isNotNode, isParameterNode, isPlusNode, isSubqueryNode, isVariableNode, resolveAttribute, resolveClass, resolveClass, resolveMapping, resolveMapping, 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 java.lang.String getFirstVariable()

getDeclarations

public java.util.List getDeclarations()

setDeclarations

public void setDeclarations(java.util.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