| /* |
| * Copyright (c) 1998, 2020 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // 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. |
| */ |
| @Override |
| 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); |
| } |
| } |
| |
| } |