| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| ******************************************************************************/ |
| package org.apache.olingo.odata2.annotation.processor.api; |
| |
| import java.util.Collection; |
| |
| import org.apache.olingo.odata2.api.ODataService; |
| import org.apache.olingo.odata2.api.exception.ODataException; |
| |
| /** |
| * AnnotationServiceFactory which provides an AnnotationService which handles java beans (classes) |
| * annotated with annotation from <code>org.apache.olingo.olingo-odata2-api-annotation</code> module |
| * (see package <code>org.apache.olingo.odata2.api.annotation.edm</code>). |
| */ |
| public abstract class AnnotationServiceFactory { |
| |
| private static final String IMPLEMENTATION = |
| "org.apache.olingo.odata2.annotation.processor.core.rt.AnnotationServiceFactoryImpl"; |
| |
| /** |
| * Create a runtime delegate instance from the core library. The core |
| * library (org.apache.olingo.odata2.annotation.processor.core) needs to be included into the classpath |
| * of the using application. |
| * @return implementation instance |
| */ |
| private static AnnotationServiceFactoryInstance getInstance() { |
| AnnotationServiceFactoryInstance delegate; |
| |
| try { |
| final Class<?> clazz = Class.forName(IMPLEMENTATION); |
| /* |
| * We explicitly do not use the singleton pattern to keep the server state free |
| * and avoid class loading issues also during hot deployment. |
| */ |
| final Object object = clazz.newInstance(); |
| delegate = (AnnotationServiceFactoryInstance) object; |
| |
| } catch (final Exception e) { |
| throw new RuntimeException(e); |
| } |
| return delegate; |
| } |
| |
| /** |
| * Interface to be implemented for an instance of a {@link AnnotationServiceFactoryInstance} which |
| * provides an {@link ODataService} based on annotation from |
| * <code>org.apache.olingo.olingo-odata2-api-annotation</code> module |
| * (see package <code>org.apache.olingo.odata2.api.annotation.edm</code>). |
| */ |
| public interface AnnotationServiceFactoryInstance { |
| /** |
| * Create an {@link ODataService} which is based on an EDM and Processor which are using the annotations from |
| * <code>org.apache.olingo.olingo-odata2-api-annotation</code> module |
| * (see package <code>org.apache.olingo.odata2.api.annotation.edm</code>) to define the model and access the data. |
| * |
| * @param modelPackage package name which is scanned for annotated classes |
| * @return service an {@link ODataService} based on on an EDM and Processor which are using annotations |
| * for model definition and data access. |
| * @throws ODataException if an error during initialization occurs |
| */ |
| public ODataService createAnnotationService(String modelPackage) throws ODataException; |
| |
| /** |
| * Create an {@link ODataService} which is based on an EDM and Processor which are using the annotations from |
| * <code>org.apache.olingo.olingo-odata2-api-annotation</code> module |
| * (see package <code>org.apache.olingo.odata2.api.annotation.edm</code>) to define the model and access the data. |
| * |
| * @param modelPackage classes (which are annotated) which will be used for EDM definition and data access. |
| * @return service an {@link ODataService} based on on an EDM and Processor which are using annotations |
| * for model definition and data access. |
| * @throws ODataException if an error during initialization occurs |
| */ |
| public ODataService createAnnotationService(Collection<Class<?>> annotatedClasses) throws ODataException; |
| } |
| |
| /** |
| * Create an {@link ODataService} which is based on an EDM and Processor which are using the annotations from |
| * <code>org.apache.olingo.olingo-odata2-api-annotation</code> module |
| * (see package <code>org.apache.olingo.odata2.api.annotation.edm</code>) to define the model and access the data. |
| * |
| * @param modelPackage package name which is scanned for annotated classes |
| * @return service an {@link ODataService} based on on an EDM and Processor which are using annotations |
| * for model definition and data access. |
| * @throws ODataException if an error during initialization occurs |
| */ |
| public static ODataService createAnnotationService(final String modelPackage) throws ODataException { |
| return getInstance().createAnnotationService(modelPackage); |
| } |
| |
| /** |
| * Create an {@link ODataService} which is based on an EDM and Processor which are using the annotations from |
| * <code>org.apache.olingo.olingo-odata2-api-annotation</code> module |
| * (see package <code>org.apache.olingo.odata2.api.annotation.edm</code>) to define the model and access the data. |
| * |
| * @param modelPackage classes (which are annotated) which will be used for EDM definition and data access. |
| * @return service an {@link ODataService} based on on an EDM and Processor which are using annotations |
| * for model definition and data access. |
| * @throws ODataException if an error during initialization occurs |
| */ |
| public static ODataService createAnnotationService(final Collection<Class<?>> annotatedClasses) |
| throws ODataException { |
| return getInstance().createAnnotationService(annotatedClasses); |
| } |
| } |