| /* |
| * Copyright (c) 1998, 2020 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: |
| // 03/26/2008-1.0M6 Guy Pelletier |
| // - 211302: Add variable 1-1 mapping support to the EclipseLink-ORM.XML Schema |
| // 05/16/2008-1.0M8 Guy Pelletier |
| // - 218084: Implement metadata merging functionality between mapping files |
| // 04/27/2010-2.1 Guy Pelletier |
| // - 309856: MappedSuperclasses from XML are not being initialized properly |
| // 01/25/2011-2.3 Guy Pelletier |
| // - 333913: @OrderBy and <order-by/> without arguments should order by primary |
| // 03/24/2011-2.3 Guy Pelletier |
| // - 337323: Multi-tenant with shared schema support (part 1) |
| package org.eclipse.persistence.internal.jpa.metadata.columns; |
| |
| import org.eclipse.persistence.exceptions.ValidationException; |
| import org.eclipse.persistence.internal.jpa.metadata.ORMetadata; |
| |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.MetadataAccessor; |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAccessibleObject; |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation; |
| import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataClass; |
| |
| import org.eclipse.persistence.internal.jpa.metadata.xml.XMLEntityMappings; |
| |
| import org.eclipse.persistence.mappings.VariableOneToOneMapping; |
| |
| /** |
| * INTERNAL: |
| * A discriminator class is used within a variable one to one mapping. |
| * |
| * Key notes: |
| * - any metadata mapped from XML to this class must be compared in the |
| * equals method. |
| * - when loading from annotations, the constructor accepts the metadata |
| * accessor this metadata was loaded from. Used it to look up any |
| * 'companion' annotation needed for processing. |
| * - methods should be preserved in alphabetical order. |
| * |
| * @author Guy Pelletier |
| * @since EclipseLink 1.0 |
| */ |
| public class DiscriminatorClassMetadata extends ORMetadata { |
| private MetadataClass m_valueClass; |
| private String m_value; |
| private String m_discriminator; |
| |
| /** |
| * INTERNAL: |
| * Used for XML loading. |
| */ |
| public DiscriminatorClassMetadata() { |
| super("<discriminator-class>"); |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for annotation loading. |
| */ |
| public DiscriminatorClassMetadata(MetadataAnnotation discriminatorClass, MetadataAccessor accessor) { |
| super(discriminatorClass, accessor); |
| |
| setDiscriminator(discriminatorClass.getAttributeString("discriminator")); |
| setValueClass(getMetadataClass(discriminatorClass.getAttributeString("value"))); |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| @Override |
| public boolean equals(Object objectToCompare) { |
| if (objectToCompare instanceof DiscriminatorClassMetadata) { |
| DiscriminatorClassMetadata discriminatorClass = (DiscriminatorClassMetadata) objectToCompare; |
| |
| if (! valuesMatch(m_value, discriminatorClass.getValue())) { |
| return false; |
| } |
| |
| return valuesMatch(m_discriminator, discriminatorClass.getDiscriminator()); |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = m_value != null ? m_value.hashCode() : 0; |
| result = 31 * result + (m_discriminator != null ? m_discriminator.hashCode() : 0); |
| return result; |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public String getDiscriminator() { |
| return m_discriminator; |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| public MetadataClass getValueClass() { |
| return m_valueClass; |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public String getValue() { |
| return m_value; |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| @Override |
| public void initXMLObject(MetadataAccessibleObject accessibleObject, XMLEntityMappings entityMappings) { |
| super.initXMLObject(accessibleObject, entityMappings); |
| |
| m_valueClass = initXMLClassName(m_value); |
| } |
| |
| /** |
| * INTERNAL: |
| * Process a discriminator class for the given variable one to one mapping. |
| */ |
| public void process(VariableOneToOneMapping mapping) { |
| if (mapping.getTypeIndicatorNameTranslation().containsValue(m_discriminator)) { |
| throw ValidationException.multipleClassesForTheSameDiscriminator(m_discriminator, mapping.getAttributeName()); |
| } |
| |
| mapping.addClassNameIndicator(m_valueClass.getName(), m_discriminator); |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public void setDiscriminator(String discriminator) { |
| m_discriminator= discriminator; |
| } |
| |
| /** |
| * INTERNAL: |
| */ |
| public void setValueClass(MetadataClass value) { |
| m_valueClass = value; |
| } |
| |
| /** |
| * INTERNAL: |
| * Used for OX mapping. |
| */ |
| public void setValue(String valueName) { |
| m_value = valueName; |
| } |
| } |
| |