| /* |
| * Copyright (c) 1998, 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: |
| // Andrei Ilitchev (Oracle), March 7, 2008 |
| // - New file introduced for bug 211300. |
| // 05/16/2008-1.0M8 Guy Pelletier |
| // - 218084: Implement metadata merging functionality between mapping files |
| // 02/06/2009-2.0 Guy Pelletier |
| // - 248293: JPA 2.0 Element Collections (part 2) |
| // 03/27/2009-2.0 Guy Pelletier |
| // - 241413: JPA 2.0 Add EclipseLink support for Map type attributes |
| // 04/27/2010-2.1 Guy Pelletier |
| // - 309856: MappedSuperclasses from XML are not being initialized properly |
| // 03/24/2011-2.3 Guy Pelletier |
| // - 337323: Multi-tenant with shared schema support (part 1) |
| // 11/19/2012-2.5 Guy Pelletier |
| // - 389090: JPA 2.1 DDL Generation Support (foreign key metadata support) |
| package org.eclipse.persistence.internal.jpa.metadata.accessors.mappings; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.persistence.annotations.ReadTransformer; |
| import org.eclipse.persistence.annotations.WriteTransformer; |
| import org.eclipse.persistence.annotations.WriteTransformers; |
| |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor; |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAccessibleObject; |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement; |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation; |
| |
| import org.eclipse.persistence.internal.jpa.metadata.transformers.ReadTransformerMetadata; |
| import org.eclipse.persistence.internal.jpa.metadata.transformers.WriteTransformerMetadata; |
| import org.eclipse.persistence.internal.jpa.metadata.xml.XMLEntityMappings; |
| |
| import org.eclipse.persistence.mappings.TransformationMapping; |
| |
| /** |
| * INTERNAL: |
| * TransformationAccessor. Transformation annotation may or may not be present |
| * on the accessible object. |
| * |
| * Key notes: |
| * - any metadata mapped from XML to this class must be compared in the |
| * equals method. |
| * - any metadata mapped from XML to this class must be handled in the merge |
| * method. (merging is done at the accessor/mapping level) |
| * - any metadata mapped from XML to this class must be initialized in the |
| * initXMLObject method. |
| * - methods should be preserved in alphabetical order. |
| * |
| * @author Andrei Ilitchev |
| * @since EclipseLink 1.0 |
| */ |
| public class TransformationAccessor extends BasicAccessor { |
| private ReadTransformerMetadata m_readTransformer; |
| private List<WriteTransformerMetadata> m_writeTransformers = new ArrayList<WriteTransformerMetadata>(); |
| |
| /** |
| * INTERNAL: |
| */ |
| public TransformationAccessor() { |
| super("<transformation>"); |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| public TransformationAccessor(MetadataAnnotation transformation, MetadataAnnotatedElement annotatedElement, ClassAccessor classAccessor) { |
| super(transformation, annotatedElement, classAccessor); |
| |
| if (transformation != null) { |
| setFetch(transformation.getAttributeString("fetch")); |
| setOptional(transformation.getAttributeBooleanDefaultTrue("optional")); |
| } |
| |
| if (isAnnotationPresent(ReadTransformer.class)) { |
| m_readTransformer = new ReadTransformerMetadata(getAnnotation(ReadTransformer.class), this); |
| } |
| |
| // Set the write transformers if specified. |
| // Process all the write transformers first. |
| if (isAnnotationPresent(WriteTransformers.class)) { |
| for (Object transformer : getAnnotation(WriteTransformers.class).getAttributeArray("value")) { |
| m_writeTransformers.add(new WriteTransformerMetadata((MetadataAnnotation) transformer, this)); |
| } |
| } |
| |
| // Process the single write transformer second. |
| if (isAnnotationPresent(WriteTransformer.class)) { |
| m_writeTransformers.add(new WriteTransformerMetadata(getAnnotation(WriteTransformer.class), this)); |
| } |
| |
| // TODO: ReturningPolicy |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| @Override |
| public boolean equals(Object objectToCompare) { |
| if (super.equals(objectToCompare) && objectToCompare instanceof TransformationAccessor) { |
| TransformationAccessor transformationAccessor = (TransformationAccessor) objectToCompare; |
| |
| if (! valuesMatch(m_readTransformer, transformationAccessor.getReadTransformer())) { |
| return false; |
| } |
| |
| return valuesMatch(m_writeTransformers, transformationAccessor.getWriteTransformers()); |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = super.hashCode(); |
| result = 31 * result + (m_readTransformer != null ? m_readTransformer.hashCode() : 0); |
| result = 31 * result + (m_writeTransformers != null ? m_writeTransformers.hashCode() : 0); |
| return result; |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public ReadTransformerMetadata getReadTransformer() { |
| return m_readTransformer; |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public List<WriteTransformerMetadata> getWriteTransformers() { |
| return m_writeTransformers; |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| @Override |
| public void initXMLObject(MetadataAccessibleObject accessibleObject, XMLEntityMappings entityMappings) { |
| super.initXMLObject(accessibleObject, entityMappings); |
| |
| // Init the ORMetadata objects. |
| initXMLObject(m_readTransformer, accessibleObject); |
| |
| // Init the list of ORMetadata objects. |
| initXMLObjects(m_writeTransformers, accessibleObject); |
| } |
| |
| /** |
| * INTERNAL: |
| * Process a transformation accessor. Creates a TransformationMapping and |
| * adds it to descriptor. |
| */ |
| @Override |
| public void process() { |
| TransformationMapping mapping = new TransformationMapping(); |
| setMapping(mapping); |
| |
| mapping.setAttributeName(getAttributeName()); |
| mapping.setIsOptional(isOptional()); |
| mapping.setIsLazy(usesIndirection()); |
| if (getMutable() != null) { |
| mapping.setIsMutable(getMutable()); |
| } |
| |
| // Will check for PROPERTY access. |
| setAccessorMethods(mapping); |
| |
| if (m_readTransformer != null) { |
| m_readTransformer.process(mapping, getAnnotatedElementName()); |
| } |
| |
| if (m_writeTransformers.isEmpty()) { |
| mapping.setIsReadOnly(true); |
| } else { |
| if (m_writeTransformers.size() == 1) { |
| // If only one WriteTransformer specified then if column name |
| // is not specified attribute name will be used as a column |
| // name. |
| if (! m_writeTransformers.get(0).hasFieldName()) { |
| m_writeTransformers.get(0).setFieldName(getAttributeName()); |
| } |
| } |
| |
| for (WriteTransformerMetadata writeTransformer : m_writeTransformers) { |
| writeTransformer.process(mapping, getAnnotatedElementName()); |
| } |
| } |
| |
| // TODO: ReturningPolicy |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public void setReadTransformer(ReadTransformerMetadata readTransformer) { |
| m_readTransformer = readTransformer; |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public void setWriteTransformers(List<WriteTransformerMetadata> writeTransformers) { |
| m_writeTransformers = writeTransformers; |
| } |
| } |