| /* |
| * 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.internal.jpa.jpql; |
| |
| import org.eclipse.persistence.descriptors.ClassDescriptor; |
| import org.eclipse.persistence.expressions.Expression; |
| import org.eclipse.persistence.jpa.jpql.parser.Join; |
| import org.eclipse.persistence.mappings.DatabaseMapping; |
| |
| /** |
| * A <code>JoinDeclaration</code> represents a single <code><b>JOIN</b></code> expression. |
| * |
| * @version 2.5 |
| * @since 2.4 |
| * @author Pascal Filion |
| */ |
| final class JoinDeclaration extends Declaration { |
| |
| /** |
| * Creates a new <code>JoinDeclaration</code>. |
| * |
| * @param queryContext The context used to query information about the application metadata and |
| * cached information |
| */ |
| JoinDeclaration(JPQLQueryContext queryContext) { |
| super(queryContext); |
| } |
| |
| @Override |
| Expression buildQueryExpression() { |
| return queryContext.buildExpression(baseExpression); |
| } |
| |
| @Override |
| public Join getBaseExpression() { |
| return (Join) super.getBaseExpression(); |
| } |
| |
| @Override |
| public Type getType() { |
| return Type.UNKNOWN; |
| } |
| |
| @Override |
| ClassDescriptor resolveDescriptor() { |
| return queryContext.resolveDescriptor(getBaseExpression().getJoinAssociationPath()); |
| } |
| |
| @Override |
| DatabaseMapping resolveMapping() { |
| return queryContext.resolveMapping(getBaseExpression().getJoinAssociationPath()); |
| } |
| |
| @Override |
| public String toString() { |
| return baseExpression.toParsedText(); |
| } |
| } |