| /* |
| * 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.parser.AbstractPathExpression; |
| |
| /** |
| * This {@link StateObject} wraps the name of an {@link Enum} constant. |
| * |
| * @version 2.4 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| @SuppressWarnings("nls") |
| public class EnumTypeStateObject extends SimpleStateObject { |
| |
| /** |
| * Creates a new <code>EnumTypeStateObject</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 EnumTypeStateObject(StateObject parent) { |
| super(parent); |
| } |
| |
| /** |
| * Creates a new <code>EnumTypeStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param enumConstant The fully qualified name of the {@link Enum} type following by the constant |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public EnumTypeStateObject(StateObject parent, Enum<? extends Enum<?>> enumConstant) { |
| super(parent, toString(enumConstant)); |
| } |
| |
| /** |
| * Creates a new <code>EnumTypeStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param enumConstant The fully qualified name of the {@link Enum} constant |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public EnumTypeStateObject(StateObject parent, String enumConstant) { |
| super(parent, enumConstant); |
| } |
| |
| private static String toString(Enum<? extends Enum<?>> enumConstant) { |
| Class<?> enumType = enumConstant.getDeclaringClass(); |
| return enumType.getName() + "." + enumConstant.name(); |
| } |
| |
| @Override |
| public void accept(StateObjectVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| public AbstractPathExpression getExpression() { |
| return (AbstractPathExpression) super.getExpression(); |
| } |
| |
| /** |
| * Keeps a reference of the {@link AbstractPathExpression parsed object} object, which should |
| * only be done when this object is instantiated during the conversion of a parsed JPQL query |
| * into {@link StateObject StateObjects}. |
| * |
| * @param expression The {@link AbstractPathExpression parsed object} representing the enum type |
| */ |
| public void setExpression(AbstractPathExpression expression) { |
| super.setExpression(expression); |
| } |
| } |