| /* |
| * Copyright (c) 2011, 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: |
| // Oracle = 2.2 - Initial contribution |
| package org.eclipse.persistence.oxm.annotations; |
| |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.annotation.Target; |
| |
| import org.eclipse.persistence.descriptors.ClassExtractor; |
| |
| /** |
| * A ClassExtractor allows for a user defined class indicator in place of |
| * using xsi:type. The class has the following restrictions: |
| |
| * - It must extend the org.eclipse.persistence.descriptors.ClassExtractor |
| * class and implement the extractClassFromRow(Record, Session) method. |
| * - That method must take a database row (a Record/Map) as an argument and |
| * must return the class to use for that row. |
| * |
| * This method will be used to decide which class to instantiate when |
| * unmarshalling an instance document. |
| * |
| * The ClassExtractor must only be set on the root of an entity class or |
| * sub-hierarchy in which a different inheritance strategy is applied. |
| */ |
| @Target({ElementType.TYPE}) |
| @Retention(RetentionPolicy.RUNTIME) |
| public @interface XmlClassExtractor { |
| |
| /** |
| * (Required) Defines the name of the class extractor that should be |
| * applied to this entity's descriptor. |
| */ |
| Class<? extends ClassExtractor> value(); |
| |
| } |