org.eclipse.persistence.internal.jpa.parsing

Class QueryNode

java.lang.Object

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

org.eclipse.persistence.internal.jpa.parsing.MajorNode

org.eclipse.persistence.internal.jpa.parsing.QueryNode

Direct Known Subclasses:

ModifyNode, SelectNode

public abstract class QueryNode
extends MajorNode

INTERNAL: This node contains the information about what kind of query is represented it's tree (e.g. Select, Update etc.) Subclasses of this node will contain query specific behavior.

Field Summary

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

shouldGenerateExpression

Constructor Summary

Constructors

Constructor and Description
QueryNode()

Method Summary

Modifier and Type	Method and Description
abstract void	applyToQuery(DatabaseQuery theQuery, GenerationContext context) INTERNAL Apply this node to the passed query
abstract DatabaseQuery	createDatabaseQuery(ParseTreeContext context) INTERNAL Returns a DatabaseQuery instance according to the kind of the query the owning ParseTree represents: SELECT, UPDATE or DELETE.
abstract Expression	generateExpression(GenerationContext context) INTERNAL Return a EclipseLink expression generated using the left node
ParseTree	getParseTree()
java.lang.Class	getReferenceClass(GenerationContext genContext) Compute the Reference class for this query
boolean	isDeleteNode()
boolean	isSelectNode()
boolean	isUpdateNode()
abstract java.lang.Class	resolveClass(GenerationContext context) Return the class represented in this node.
void	setParseTree(ParseTree parseTree) Set the parseTree

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, 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, qualifyAttributeAccess, resolveAttribute, resolveClass, resolveMapping, resolveMapping, setAlias, setColumn, setLeft, setLine, setRight, setType, toString, toString, toStringDisplayName, toStringIndent, validate, validateParameter

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

QueryNode

public QueryNode()

Method Detail

createDatabaseQuery

public abstract DatabaseQuery createDatabaseQuery(ParseTreeContext context)

INTERNAL Returns a DatabaseQuery instance according to the kind of the query the owning ParseTree represents: SELECT, UPDATE or DELETE.

applyToQuery

public abstract void applyToQuery(DatabaseQuery theQuery,
                                  GenerationContext context)

INTERNAL Apply this node to the passed query

generateExpression

public abstract Expression generateExpression(GenerationContext context)

INTERNAL Return a EclipseLink expression generated using the left node

Overrides:

generateExpression in class Node

getReferenceClass

public java.lang.Class getReferenceClass(GenerationContext genContext)

Compute the Reference class for this query

Parameters:

context -

Returns:

the class this query is querying for

isSelectNode

public boolean isSelectNode()

isUpdateNode

public boolean isUpdateNode()

isDeleteNode

public boolean isDeleteNode()

resolveClass

public abstract java.lang.Class resolveClass(GenerationContext context)

Return the class represented in this node.

Overrides:

resolveClass in class Node

setParseTree

public void setParseTree(ParseTree parseTree)

Set the parseTree

getParseTree

public ParseTree getParseTree()