| /* |
| * 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: |
| // Gordon Yorke - Initial development |
| // |
| |
| package org.eclipse.persistence.internal.jpa.querydef; |
| |
| import jakarta.persistence.criteria.Expression; |
| import jakarta.persistence.criteria.Path; |
| import jakarta.persistence.metamodel.Bindable; |
| import jakarta.persistence.metamodel.MapAttribute; |
| import jakarta.persistence.metamodel.Metamodel; |
| import jakarta.persistence.metamodel.PluralAttribute; |
| import jakarta.persistence.metamodel.SingularAttribute; |
| |
| import org.eclipse.persistence.internal.localization.ExceptionLocalization; |
| |
| /** |
| * <p> |
| * <b>Purpose</b>: Contains the implementation of the Path interface of the JPA |
| * criteria API. |
| * <p> |
| * <b>Description</b>: This class represents an abstract path which is a model of the expression through joins. |
| * |
| * @see jakarta.persistence.criteria Path |
| * |
| * @author gyorke |
| * @since EclipseLink 1.2 |
| */ |
| |
| public class PathImpl<X> extends ExpressionImpl<X> implements Path<X>, Cloneable{ |
| protected Path<?> pathParent; |
| |
| // Although this is an Object type only Attributes that implement Bindable are passed to this class |
| // sublcasses like JoinImpl will cast this artifact to Attribute |
| protected Object modelArtifact; |
| |
| public PathImpl(Path<?> parent, Metamodel metamodel, Class<X> javaClass, org.eclipse.persistence.expressions.Expression expressionNode, Bindable modelArtifact) { |
| super(metamodel, javaClass, expressionNode); |
| this.pathParent = parent; |
| this.modelArtifact = modelArtifact; |
| } |
| |
| /** |
| * Return the bindable object that corresponds to the path expression. |
| * |
| * @return bindable object corresponding to the path |
| */ |
| @Override |
| public Bindable<X> getModel(){ |
| return (Bindable<X>) this.modelArtifact; |
| |
| } |
| |
| /** |
| * Return the parent "node" in the path. |
| * |
| * @return parent |
| */ |
| @Override |
| public Path<?> getParentPath(){ |
| return this.pathParent; |
| } |
| |
| /** |
| * Return the path corresponding to the referenced non-collection valued |
| * attribute. |
| * |
| * @param att |
| * attribute |
| * @return path corresponding to the referenced attribute |
| */ |
| @Override |
| public <Y> Path<Y> get(SingularAttribute<? super X, Y> att){ |
| throw new IllegalStateException(ExceptionLocalization.buildMessage("pathnode_is_primitive_node")); |
| } |
| |
| /** |
| * Return the path corresponding to the referenced collection-valued |
| * attribute. |
| * |
| * @param collection |
| * collection-valued attribute |
| * @return expression corresponding to the referenced attribute |
| */ |
| @Override |
| public <E, C extends java.util.Collection<E>> Expression<C> get(PluralAttribute<X, C, E> collection){ |
| throw new IllegalStateException(ExceptionLocalization.buildMessage("pathnode_is_primitive_node")); |
| } |
| |
| /** |
| * Return the path corresponding to the referenced map-valued attribute. |
| * |
| * @param map |
| * map-valued attribute |
| * @return expression corresponding to the referenced attribute |
| */ |
| @Override |
| public <K, V, M extends java.util.Map<K, V>> Expression<M> get(MapAttribute<X, K, V> map){ |
| throw new IllegalStateException(ExceptionLocalization.buildMessage("pathnode_is_primitive_node")); |
| } |
| |
| /** |
| * Return an expression corresponding to the type of the path. |
| * |
| * @return expression corresponding to the type of the path |
| */ |
| @Override |
| public Expression<Class<? extends X>> type(){ |
| throw new IllegalStateException(ExceptionLocalization.buildMessage("pathnode_type_does_not_apply_to_primitive_node")); |
| } |
| |
| @Override |
| public <Y> Path<Y> get(String attName) { |
| throw new IllegalStateException(ExceptionLocalization.buildMessage("pathnode_is_primitive_node")); |
| } |
| |
| @Override |
| public void findRootAndParameters(CommonAbstractCriteriaImpl query){ |
| ((PathImpl)this.pathParent).findRootAndParameters(query); |
| } |
| |
| @Override |
| protected Object clone() { |
| try { |
| return super.clone(); |
| } catch (CloneNotSupportedException excecption) { |
| return null; |
| } |
| } |
| } |