| /* |
| * 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 |
| * <p><b>Purpose</b>: Represent a FETCH JOIN declaration as part of the FROM |
| * clause: FETCH JOIN o.customer. |
| * <p><b>Responsibilities</b>:<ul> |
| * <li> Manage the path node and the outer join flag of the FETCH JOIN clause. |
| * </ul> |
| */ |
| public class FetchJoinNode extends Node { |
| |
| private Node path; |
| private boolean outerJoin; |
| |
| /** */ |
| public Node getPath() { |
| return path; |
| } |
| |
| /** */ |
| public void setPath(Node node) { |
| path = node; |
| } |
| |
| /** */ |
| public boolean isOuterJoin() { |
| return outerJoin; |
| } |
| |
| /** */ |
| public void setOuterJoin(boolean outerJoin) { |
| this.outerJoin = outerJoin; |
| } |
| |
| /** |
| * INTERNAL |
| * Check the path child node for an unqualified field access and if so, |
| * replace it by a qualified field access. |
| */ |
| @Override |
| public Node qualifyAttributeAccess(ParseTreeContext context) { |
| if (path != null) { |
| path = path.qualifyAttributeAccess(context); |
| } |
| return this; |
| } |
| |
| /** |
| * INTERNAL |
| * Validate node and calculate its type. |
| */ |
| @Override |
| public void validate(ParseTreeContext context) { |
| if (path != null) { |
| path.validate(context); |
| setType(path.getType()); |
| |
| // join of embedded attribute is not supported. |
| if (path.isDotNode()) { |
| TypeHelper typeHelper = context.getTypeHelper(); |
| VariableNode left = (VariableNode)path.getLeft(); |
| AttributeNode right = (AttributeNode)path.getRight(); |
| if ((left != null) && (right != null)) { |
| if (typeHelper.isEmbeddedAttribute(left.getType(), right.getAttributeName())) |
| throw JPQLException.unsupportJoinArgument( |
| context.getQueryInfo(), getLine(), getColumn(), |
| "Fetch Join", getType().toString()); |
| } |
| } |
| } |
| } |
| } |