| /* |
| * 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.Assert; |
| import org.eclipse.persistence.jpa.jpql.parser.AllOrAnyExpression; |
| import org.eclipse.persistence.jpa.jpql.parser.SubqueryBNF; |
| import static org.eclipse.persistence.jpa.jpql.parser.Expression.*; |
| |
| /** |
| * An <code><b>ALL</b></code> conditional expression is a predicate that is <code>true</code> if the |
| * comparison operation is <code>true</code> for all values in the result of the subquery or the |
| * result of the subquery is empty. An <code><b>ALL</b></code> conditional expression is |
| * <code>false</code> if the result of the comparison is <code>false</code> for at least one row, |
| * and is unknown if neither <code>true</code> nor <code>false</code>. |
| * <p> |
| * An <code><b>ANY</b></code> conditional expression is a predicate that is <code>true</code> if the |
| * comparison operation is <code>true</code> for some value in the result of the subquery. An |
| * <code><b>ANY</b></code> conditional expression is <code>false</code> if the result of the |
| * subquery is empty or if the comparison operation is <code>false</code> for every value in the |
| * esult of the subquery, and is unknown if neither <code>true</code> nor <code>false</code>. The |
| * keyword <code><b>SOME</b></code> is synonymous with <code><b>ANY</b></code>. The comparison |
| * operators used with <code><b>ALL</b></code> or <code><b>ANY</b></code> conditional expressions |
| * are =, {@literal <, <=, >, >=, <>}. The result of the subquery must be like that of the other |
| * argument to the comparison operator in type. |
| * |
| * <div><p><b>BNF:</b> <code>all_or_any_expression ::= {ALL|ANY|SOME}(subquery)</code></p></div> |
| * |
| * @see AllOrAnyExpression |
| * |
| * @version 2.4 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| @SuppressWarnings("nls") |
| public class AllOrAnyExpressionStateObject extends AbstractSingleEncapsulatedExpressionStateObject { |
| |
| /** |
| * The actual JPQL identifier: <code><b>ALL</b></code>, <code><b>ANY</b></code> or |
| * <code><b>SOME</b></code>. |
| */ |
| private String identifier; |
| |
| /** |
| * Notifies the identifier property has changed. |
| */ |
| public static final String IDENTIFIER_PROPERTY = "identifier"; |
| |
| /** |
| * Creates a new <code>AllOrAnyExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param identifier One of the three possible JPQL identifiers: <code><b>ALL</b></code>, |
| * <code><b>ANY</b></code> or <code><b>SOME</b></code> |
| * @exception org.eclipse.persistence.jpa.jpql.Assert.AssertException The given JPQL identifier |
| * is one from the possible choices |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public AllOrAnyExpressionStateObject(StateObject parent, String identifier) { |
| super(parent); |
| validateIdentifier(identifier); |
| this.identifier = identifier; |
| } |
| |
| /** |
| * Creates a new <code>AllOrAnyExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param identifier One of the three possible JPQL identifiers: <code><b>ALL</b></code>, |
| * <code><b>ANY</b></code> or <code><b>SOME</b></code> |
| * @param stateObject The {@link StateObject} representing the encapsulated expression |
| * @exception org.eclipse.persistence.jpa.jpql.Assert.AssertException The given JPQL identifier |
| * is one from the possible choices |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public AllOrAnyExpressionStateObject(StateObject parent, |
| String identifier, |
| StateObject stateObject) { |
| |
| super(parent, stateObject); |
| |
| validateIdentifier(identifier); |
| this.identifier = identifier; |
| } |
| |
| /** |
| * Creates a new <code>AllOrAnyExpressionStateObject</code>. |
| * |
| * @param parent The parent of this state object, which cannot be <code>null</code> |
| * @param identifier One of the three possible JPQL identifiers: <code><b>ALL</b></code>, |
| * <code><b>ANY</b></code> or <code><b>SOME</b></code> |
| * @param jpqlFragment The portion of the query representing the encapsulated expression |
| * @exception org.eclipse.persistence.jpa.jpql.Assert.AssertException The given JPQL identifier |
| * is one from the possible choices |
| * @exception NullPointerException The given parent cannot be <code>null</code> |
| */ |
| public AllOrAnyExpressionStateObject(StateObject parent, String identifier, String jpqlFragment) { |
| super(parent, jpqlFragment); |
| validateIdentifier(identifier); |
| this.identifier = identifier; |
| } |
| |
| @Override |
| public void accept(StateObjectVisitor visitor) { |
| visitor.visit(this); |
| } |
| |
| @Override |
| public AllOrAnyExpression getExpression() { |
| return (AllOrAnyExpression) super.getExpression(); |
| } |
| |
| @Override |
| public String getIdentifier() { |
| return identifier; |
| } |
| |
| @Override |
| protected String getQueryBNFId() { |
| return SubqueryBNF.ID; |
| } |
| |
| @Override |
| public boolean isEquivalent(StateObject stateObject) { |
| |
| if (super.isEquivalent(stateObject)) { |
| AllOrAnyExpressionStateObject allOrAny = (AllOrAnyExpressionStateObject) stateObject; |
| return identifier.equals(allOrAny.identifier); |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Keeps a reference of the {@link AllOrAnyExpression 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 AllOrAnyExpression parsed object} representing an <code><b>ALL</b></code>, |
| * <code><b>ANY</b></code> or <code><b>SOME</b></code> expression |
| */ |
| public void setExpression(AllOrAnyExpression expression) { |
| super.setExpression(expression); |
| } |
| |
| /** |
| * Sets the JPQL identifier to the given one. |
| * |
| * @param identifier One of the three possible JPQL identifiers: <code><b>ALL</b></code>, |
| * <code><b>ANY</b></code> or <code><b>SOME</b></code> |
| * @exception org.eclipse.persistence.jpa.jpql.Assert.AssertException The given JPQL identifier |
| * is one from the possible choices |
| */ |
| public void setIdentifier(String identifier) { |
| |
| validateIdentifier(identifier); |
| |
| String oldIdentifier = this.identifier; |
| this.identifier = identifier; |
| firePropertyChanged(IDENTIFIER_PROPERTY, oldIdentifier, identifier); |
| } |
| |
| @Override |
| public void setStateObject(StateObject stateObject) { |
| super.setStateObject(stateObject); |
| } |
| |
| private void validateIdentifier(String identifier) { |
| Assert.isValid(identifier, "The identifier is not valid: " + identifier, ALL, ANY, SOME); |
| } |
| } |