/******************************************************************************* | |
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.jpa.parsing; | |
import org.eclipse.persistence.exceptions.JPQLException; | |
/** | |
* INTERNAL: | |
* EqualsAssignmentNode is implemented to distinguish nodes that hold updates in an update | |
* query from other BinaryOperatorNodes | |
*/ | |
public class EqualsAssignmentNode extends BinaryOperatorNode { | |
/** | |
* INTERNAL | |
* Validate the current node and calculates its type. | |
*/ | |
public void validate(ParseTreeContext context) { | |
// look for any field access that is not qualified with an variable | |
super.validate(context); | |
validateTarget(left, context); | |
} | |
/** */ | |
private void validateTarget(Node node, ParseTreeContext context) { | |
if (node.isDotNode()) { | |
TypeHelper typeHelper = context.getTypeHelper(); | |
Node path = node.getLeft(); | |
Object type = path.getType(); | |
AttributeNode attributeNode = (AttributeNode)node.getRight(); | |
String attribute = attributeNode.getAttributeName(); | |
if (typeHelper.isSingleValuedRelationship(type, attribute) || | |
typeHelper.isSimpleStateAttribute(type, attribute)) { | |
validateNavigation(path, context); | |
} else { | |
throw JPQLException.invalidSetClauseTarget( | |
context.getQueryInfo(), attributeNode.getLine(), | |
attributeNode.getColumn(), path.getAsString(), attribute); | |
} | |
} | |
} | |
/** */ | |
private void validateNavigation(Node qualifier, ParseTreeContext context) { | |
if (qualifier.isDotNode()) { | |
TypeHelper typeHelper = context.getTypeHelper(); | |
Node left = qualifier.getLeft(); | |
AttributeNode attributeNode = (AttributeNode)qualifier.getRight(); | |
String attribute = attributeNode.getAttributeName(); | |
Object type = left.getType(); | |
if (!typeHelper.isEmbeddedAttribute(type, attribute)) { | |
throw JPQLException.invalidSetClauseNavigation( | |
context.getQueryInfo(), attributeNode.getLine(), | |
attributeNode.getColumn(), qualifier.getAsString(), attribute); | |
} | |
validateNavigation(left, context); | |
} | |
} | |
} |