| /* |
| * 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 java.io.IOException; |
| import java.util.List; |
| import org.eclipse.persistence.jpa.jpql.parser.CollectionMemberExpression; |
| import static org.eclipse.persistence.jpa.jpql.parser.AbstractExpression.*; |
| |
| /** |
| * This expression tests whether the designated value is a member of the collection specified by the |
| * collection-valued path expression. If the collection-valued path expression designates an empty |
| * collection, the value of the <code><b>MEMBER OF</b></code> expression is <b>FALSE</b> and the |
| * value of the <code><b>NOT MEMBER OF</b></code> expression is <b>TRUE</b>. Otherwise, if the value |
| * of the collection-valued path expression or single-valued association-field path expression in |
| * the collection member expression is <b>NULL</b> or unknown, the value of the collection member |
| * expression is unknown. |
| * |
| * <div><p><b>BNF:</b> <code>collection_member_expression ::= entity_or_value_expression [NOT] MEMBER [OF] collection_valued_path_expression</code></p></div> |
| * |
| * @see CollectionMemberExpression |
| * |
| * @version 2.4 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| @SuppressWarnings({"nls", "unused"}) // unused used for the import statement: see bug 330740 |
| public class CollectionMemberExpressionStateObject extends AbstractStateObject { |
| |
| /** |
| * |
| */ |
| private CollectionValuedPathExpressionStateObject collectionValuedPath; |
| |
| /** |
| * |
| */ |
| private StateObject entityStateObject; |
| |
| /** |
| * Determines whether the <code><b>NOT</b></code> identifier is part of the expression or not. |
| */ |
| private boolean not; |
| |
| /** |
| * Determines whether the <code><b>OF</b></code> identifier is part of the expression or not. |
| */ |
| private boolean of; |
| |
| /** |
| * Notifies the entity state object property has changed. |
| */ |
| public static final String ENTITY_STATE_OBJECT_PROPERTY = "entityStateObject"; |
| |
| /** |
| * Notifies the visibility of the <code><b>NOT</b></code> identifier has changed. |
| */ |
| public static final String NOT_PROPERTY = "not"; |
| |
| /** |
| * Notifies the visibility of the <code><b>OF</b></code> identifier has changed. |
| */ |
| public static final String OF_PROPERTY = "of"; |
| |
| /** |
| * Creates a new <code>CollectionMemberExpressionStateObject</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 CollectionMemberExpressionStateObject(StateObject parent) { |
| super(parent); |
| } |
| |
| /** |
| * Creates a new <code>CollectionMemberExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param not Determines whether the <code><b>NOT</b></code> identifier is part of the expression |
| * or not |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public CollectionMemberExpressionStateObject(StateObject parent, |
| StateObject entityStateObject, |
| boolean not, |
| boolean of, |
| String collectionValuedPath) { |
| |
| super(parent); |
| this.not = not; |
| this.of = of; |
| this.entityStateObject = parent(entityStateObject); |
| this.collectionValuedPath.setPath(collectionValuedPath); |
| } |
| |
| /** |
| * Creates a new <code>CollectionMemberExpressionStateObject</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 CollectionMemberExpressionStateObject(StateObject parent, |
| StateObject entityStateObject, |
| String collectionValuedPath) { |
| |
| this(parent, entityStateObject, false, false, collectionValuedPath); |
| } |
| |
| @Override |
| public void accept(StateObjectVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| protected void addChildren(List<StateObject> children) { |
| super.addChildren(children); |
| if (entityStateObject != null) { |
| children.add(entityStateObject); |
| } |
| if (collectionValuedPath != null) { |
| children.add(collectionValuedPath); |
| } |
| } |
| |
| /** |
| * Makes sure the <code><b>NOT</b></code> identifier is specified. |
| * |
| * @return This object |
| */ |
| public CollectionMemberExpressionStateObject addNot() { |
| if (!not) { |
| setNot(true); |
| } |
| return this; |
| } |
| |
| /** |
| * Makes sure the <code><b>OF</b></code> identifier is specified. |
| * |
| * @return This object |
| */ |
| public CollectionMemberExpressionStateObject addOf() { |
| if (!of) { |
| setOf(true); |
| } |
| return this; |
| } |
| |
| public CollectionValuedPathExpressionStateObject getCollectionValuedPath() { |
| return collectionValuedPath; |
| } |
| |
| public StateObject getEntityStateObject() { |
| return entityStateObject; |
| } |
| |
| @Override |
| public CollectionMemberExpression getExpression() { |
| return (CollectionMemberExpression) super.getExpression(); |
| } |
| |
| public boolean hasEntityStateObject() { |
| return entityStateObject != null; |
| } |
| |
| /** |
| * Determines whether the <code><b>NOT</b></code> identifier is used or not. |
| * |
| * @return <code>true</code> if the <code><b>NOT</b></code> identifier is part of the expression; |
| * <code>false</code> otherwise |
| */ |
| public boolean hasNot() { |
| return not; |
| } |
| |
| public boolean hasOf() { |
| return of; |
| } |
| |
| @Override |
| protected void initialize() { |
| super.initialize(); |
| collectionValuedPath = new CollectionValuedPathExpressionStateObject(this); |
| } |
| |
| @Override |
| public boolean isEquivalent(StateObject stateObject) { |
| |
| if (super.isEquivalent(stateObject)) { |
| CollectionMemberExpressionStateObject collection = (CollectionMemberExpressionStateObject) stateObject; |
| return not == collection.not && |
| of == collection.of && |
| collectionValuedPath.isEquivalent(collection.collectionValuedPath) && |
| areEquivalent(entityStateObject, collection.entityStateObject); |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Makes sure the <code><b>NOT</b></code> identifier is not specified. |
| */ |
| public void removeNot() { |
| if (not) { |
| setNot(false); |
| } |
| } |
| |
| /** |
| * Makes sure the <code><b>OF</b></code> identifier is not specified. |
| */ |
| public void removeOf() { |
| if (of) { |
| setOf(false); |
| } |
| } |
| |
| /** |
| * Sets |
| * |
| */ |
| public void setEntityStateObject(StateObject entityStateObject) { |
| StateObject oldEntityStateObject = entityStateObject; |
| this.entityStateObject = parent(entityStateObject); |
| firePropertyChanged(ENTITY_STATE_OBJECT_PROPERTY, oldEntityStateObject, entityStateObject); |
| } |
| |
| /** |
| * Keeps a reference of the {@link CollectionMemberExpression 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 CollectionMemberExpression parsed object} representing a |
| * collection member expression |
| */ |
| public void setExpression(CollectionMemberExpression expression) { |
| super.setExpression(expression); |
| } |
| |
| /** |
| * Sets whether the <code><b>NOT</b></code> identifier should be part of the expression or not. |
| * |
| * @param not <code>true</code> if the <code><b>NOT</b></code> identifier should be part of the |
| * expression; <code>false</code> otherwise |
| */ |
| public void setNot(boolean not) { |
| boolean oldNot = this.not; |
| this.not = not; |
| firePropertyChanged(NOT_PROPERTY, oldNot, not); |
| } |
| |
| public void setOf(boolean of) { |
| boolean oldOf = this.of; |
| this.of = of; |
| firePropertyChanged(OF_PROPERTY, oldOf, of); |
| } |
| |
| /** |
| * Changes the visibility state of the <code><b>NOT</b></code> identifier. |
| */ |
| public void toggleNot() { |
| setNot(!not); |
| } |
| |
| /** |
| * Changes the visibility state of the <code><b>OF</b></code> identifier. |
| */ |
| public void toggleOf() { |
| setOf(!of); |
| } |
| |
| @Override |
| protected void toTextInternal(Appendable writer) throws IOException { |
| |
| if (entityStateObject != null) { |
| entityStateObject.toString(writer); |
| writer.append(SPACE); |
| } |
| |
| if (not && of) { |
| writer.append(NOT_MEMBER_OF); |
| } |
| else if (not) { |
| writer.append(NOT_MEMBER); |
| } |
| else if (of) { |
| writer.append(MEMBER_OF); |
| } |
| else { |
| writer.append(MEMBER); |
| } |
| |
| writer.append(SPACE); |
| collectionValuedPath.toString(writer); |
| } |
| } |