| /* |
| * Copyright (c) 2011, 2021 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 |
| // |
| package org.eclipse.persistence.jpa.jpql.tools.model.query; |
| |
| import org.eclipse.persistence.jpa.jpql.tools.spi.IManagedType; |
| |
| /** |
| * <div><p><b>BNF:</b> <code>subselect_identification_variable_declaration ::= derived_path_expression [AS] identification_variable {join}*</code></p></div> |
| * |
| * <div><p><b>BNF:</b> <code>derived_path_expression ::= superquery_identification_variable.{single_valued_object_field.}*collection_valued_field | |
| * superquery_identification_variable.{single_valued_object_field.}*single_valued_object_field</code></p></div> |
| * |
| * @see org.eclipse.persistence.jpa.jpql.parser.RangeVariableDeclaration RangeVariableDeclaration |
| * |
| * @version 2.4 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| public class DerivedPathVariableDeclarationStateObject extends AbstractRangeVariableDeclarationStateObject { |
| |
| /** |
| * Creates a new <code>DerivedPathVariableDeclarationStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public DerivedPathVariableDeclarationStateObject(DerivedPathIdentificationVariableDeclarationStateObject parent) { |
| super(parent); |
| } |
| |
| /** |
| * Creates a new <code>DerivedPathVariableDeclarationStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param path Either the derived singled-valued object path expression or the collection-valued |
| * path expression |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public DerivedPathVariableDeclarationStateObject(DerivedPathIdentificationVariableDeclarationStateObject parent, |
| String path) { |
| |
| super(parent, path); |
| } |
| |
| @Override |
| public void accept(StateObjectVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| protected StateObject buildRootStateObject() { |
| return new CollectionValuedPathExpressionStateObject(this); |
| } |
| |
| @Override |
| public IManagedType getManagedType(StateObject stateObject) { |
| |
| if (getIdentificationVariableStateObject().isEquivalent(stateObject)) { |
| return getRootStateObject().getManagedType(); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public DerivedPathIdentificationVariableDeclarationStateObject getParent() { |
| return (DerivedPathIdentificationVariableDeclarationStateObject) super.getParent(); |
| } |
| |
| /** |
| * Returns the string representation of the path expression. If the identification variable is |
| * virtual, then it is not part of the result. |
| * |
| * @return The path expression, which is never <code>null</code> |
| */ |
| public String getPath() { |
| return getRootStateObject().getPath(); |
| } |
| |
| @Override |
| public String getRootPath() { |
| return getPath(); |
| } |
| |
| @Override |
| public CollectionValuedPathExpressionStateObject getRootStateObject() { |
| return (CollectionValuedPathExpressionStateObject) super.getRootStateObject(); |
| } |
| |
| @Override |
| public void setRootPath(String path) { |
| getRootStateObject().setPath(path); |
| } |
| } |