| /******************************************************************************* |
| * Copyright (c) 2011 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 |
| * which accompanies this distribution. |
| * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html |
| * and the Eclipse Distribution License is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| * |
| ******************************************************************************/ |
| package org.eclipse.jpt.jpa.core.jpql.spi; |
| |
| import org.eclipse.jpt.jpa.core.context.TypeMapping; |
| import org.eclipse.persistence.jpa.jpql.spi.IManagedType; |
| import org.eclipse.persistence.jpa.jpql.spi.IManagedTypeProvider; |
| import org.eclipse.persistence.jpa.jpql.spi.IManagedTypeVisitor; |
| import org.eclipse.persistence.jpa.jpql.spi.IMapping; |
| import org.eclipse.persistence.jpa.jpql.spi.IType; |
| import org.eclipse.persistence.jpa.jpql.util.iterator.IterableIterator; |
| import org.eclipse.persistence.jpa.jpql.util.iterator.NullIterator; |
| |
| /** |
| * The concrete implementation of {@link IManagedType} that is wrapping the design-time |
| * representation a "null" managed type. |
| * |
| * Provisional API: This interface is part of an interim API that is still under development and |
| * expected to change significantly before reaching stability. It is available at this early stage |
| * to solicit feedback from pioneering adopters on the understanding that any code that uses this |
| * API will almost certainly be broken (repeatedly) as the API evolves. |
| * |
| * @version 3.1 |
| * @since 3.0 |
| * @author Pascal Filion |
| */ |
| public class JpaNullManagedType implements IManagedType { |
| |
| /** |
| * The provider of JPA managed types. |
| */ |
| private final JpaManagedTypeProvider provider; |
| |
| /** |
| * The cached {@link IType} of this "null" managed type. |
| */ |
| private IType type; |
| |
| /** |
| * The design-time model object wrapped by this class. |
| */ |
| private final TypeMapping typeMapping; |
| |
| /** |
| * Creates a new <code>JpaNullManagedType</code>. |
| * |
| * @param managedType The provider of JPA managed types |
| * @param typeMapping The design-time model object wrapped by this class |
| */ |
| public JpaNullManagedType(JpaManagedTypeProvider provider, TypeMapping typeMapping) { |
| super(); |
| this.provider = provider; |
| this.typeMapping = typeMapping; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void accept(IManagedTypeVisitor visitor) { |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public int compareTo(IManagedType managedType) { |
| return getType().getName().compareTo(managedType.getType().getName()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public IMapping getMappingNamed(String name) { |
| return null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public IManagedTypeProvider getProvider() { |
| return provider; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public IType getType() { |
| if (type == null) { |
| type = provider.getTypeRepository().getType(typeMapping.getPersistentType().getName()); |
| } |
| return type; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public IterableIterator<IMapping> mappings() { |
| return NullIterator.instance(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String toString() { |
| return getType().getName(); |
| } |
| } |