/*******************************************************************************
* 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.
******************************************************************************/
#set( $symbol_pound = '#' )
#set( $symbol_dollar = '$' )
#set( $symbol_escape = '\' )
package ${package}.processor;
import org.apache.olingo.odata2.annotation.processor.api.AnnotationServiceFactory;
import org.apache.olingo.odata2.api.ODataCallback;
import org.apache.olingo.odata2.api.ODataDebugCallback;
import org.apache.olingo.odata2.api.ODataService;
import org.apache.olingo.odata2.api.ODataServiceFactory;
import org.apache.olingo.odata2.api.commons.HttpStatusCodes;
import org.apache.olingo.odata2.api.ep.EntityProvider;
import org.apache.olingo.odata2.api.exception.ODataApplicationException;
import org.apache.olingo.odata2.api.exception.ODataException;
import org.apache.olingo.odata2.api.processor.ODataContext;
import org.apache.olingo.odata2.api.processor.ODataErrorCallback;
import org.apache.olingo.odata2.api.processor.ODataErrorContext;
import org.apache.olingo.odata2.api.processor.ODataResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
*/
public class AnnotationSampleServiceFactory extends ODataServiceFactory {
/**
* Instance holder for all annotation relevant instances which should be used as singleton
* instances within the ODataApplication (ODataService)
*/
private static class AnnotationInstances {
final static String MODEL_PACKAGE = "${package}.model";
final static ODataService ANNOTATION_ODATA_SERVICE;
static {
try {
ANNOTATION_ODATA_SERVICE = AnnotationServiceFactory.createAnnotationService(MODEL_PACKAGE);
} catch (ODataApplicationException ex) {
throw new RuntimeException("Exception during sample data generation.", ex);
} catch (ODataException ex) {
throw new RuntimeException("Exception during data source initialization generation.", ex);
}
}
}
@Override
public ODataService createService(final ODataContext context) throws ODataException {
// Edm via Annotations and ListProcessor via AnnotationDS with AnnotationsValueAccess
return AnnotationInstances.ANNOTATION_ODATA_SERVICE;
}
@SuppressWarnings("unchecked")
@Override
public <T extends ODataCallback> T getCallback(final Class<T> callbackInterface) {
return (T) (callbackInterface.isAssignableFrom(ScenarioErrorCallback.class)
? new ScenarioErrorCallback() : callbackInterface.isAssignableFrom(ODataDebugCallback.class)
? new ScenarioDebugCallback() : super.getCallback(callbackInterface));
}
/*
* Helper classes and methods
*/
private final class ScenarioDebugCallback implements ODataDebugCallback {
@Override
public boolean isDebugEnabled() {
return true;
}
}
private class ScenarioErrorCallback implements ODataErrorCallback {
private final Logger LOG = LoggerFactory.getLogger(ScenarioErrorCallback.class);
@Override
public ODataResponse handleError(final ODataErrorContext context) throws ODataApplicationException {
if (context.getHttpStatus() == HttpStatusCodes.INTERNAL_SERVER_ERROR) {
LOG.error("Internal Server Error", context.getException());
}
return EntityProvider.writeErrorDocument(context);
}
}
}