#set( $symbol_pound = '#' )
#set( $symbol_dollar = '$' )
#set( $symbol_escape = '\' )
/*******************************************************************************
* 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 ${package};
import static ${package}.CarEdmProvider.ENTITY_SET_NAME_CARS;
import static ${package}.CarEdmProvider.ENTITY_SET_NAME_MANUFACTURERS;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.olingo.odata2.api.edm.EdmEntitySet;
import org.apache.olingo.odata2.api.edm.EdmLiteralKind;
import org.apache.olingo.odata2.api.edm.EdmProperty;
import org.apache.olingo.odata2.api.edm.EdmSimpleType;
import org.apache.olingo.odata2.api.ep.EntityProvider;
import org.apache.olingo.odata2.api.ep.EntityProviderWriteProperties;
import org.apache.olingo.odata2.api.ep.EntityProviderWriteProperties.ODataEntityProviderPropertiesBuilder;
import org.apache.olingo.odata2.api.exception.ODataException;
import org.apache.olingo.odata2.api.exception.ODataNotFoundException;
import org.apache.olingo.odata2.api.exception.ODataNotImplementedException;
import org.apache.olingo.odata2.api.processor.ODataResponse;
import org.apache.olingo.odata2.api.processor.ODataSingleProcessor;
import org.apache.olingo.odata2.api.uri.KeyPredicate;
import org.apache.olingo.odata2.api.uri.info.GetEntitySetUriInfo;
import org.apache.olingo.odata2.api.uri.info.GetEntityUriInfo;
public class CarODataSingleProcessor extends ODataSingleProcessor {
private final CarDataStore dataStore;
public CarODataSingleProcessor() {
dataStore = new CarDataStore();
}
@Override
public ODataResponse readEntitySet(final GetEntitySetUriInfo uriInfo, final String contentType)
throws ODataException {
EdmEntitySet entitySet;
if (uriInfo.getNavigationSegments().size() == 0) {
entitySet = uriInfo.getStartEntitySet();
if (ENTITY_SET_NAME_CARS.equals(entitySet.getName())) {
return EntityProvider.writeFeed(contentType, entitySet, dataStore.getCars(),
EntityProviderWriteProperties.serviceRoot(getContext().getPathInfo().getServiceRoot()).build());
} else if (ENTITY_SET_NAME_MANUFACTURERS.equals(entitySet.getName())) {
return EntityProvider.writeFeed(contentType, entitySet, dataStore.getManufacturers(),
EntityProviderWriteProperties.serviceRoot(getContext().getPathInfo().getServiceRoot()).build());
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (uriInfo.getNavigationSegments().size() == 1) {
// navigation first level, simplified example for illustration purposes only
entitySet = uriInfo.getTargetEntitySet();
if (ENTITY_SET_NAME_CARS.equals(entitySet.getName())) {
int manufacturerKey = getKeyValue(uriInfo.getKeyPredicates().get(0));
List<Map<String, Object>> cars = new ArrayList<Map<String, Object>>();
cars.addAll(dataStore.getCarsFor(manufacturerKey));
return EntityProvider.writeFeed(contentType, entitySet, cars, EntityProviderWriteProperties.serviceRoot(
getContext().getPathInfo().getServiceRoot()).build());
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
}
throw new ODataNotImplementedException();
}
@Override
public ODataResponse readEntity(final GetEntityUriInfo uriInfo, final String contentType) throws ODataException {
if (uriInfo.getNavigationSegments().size() == 0) {
EdmEntitySet entitySet = uriInfo.getStartEntitySet();
if (ENTITY_SET_NAME_CARS.equals(entitySet.getName())) {
int id = getKeyValue(uriInfo.getKeyPredicates().get(0));
Map<String, Object> data = dataStore.getCar(id);
if (data != null) {
URI serviceRoot = getContext().getPathInfo().getServiceRoot();
ODataEntityProviderPropertiesBuilder propertiesBuilder =
EntityProviderWriteProperties.serviceRoot(serviceRoot);
return EntityProvider.writeEntry(contentType, entitySet, data, propertiesBuilder.build());
}
} else if (ENTITY_SET_NAME_MANUFACTURERS.equals(entitySet.getName())) {
int id = getKeyValue(uriInfo.getKeyPredicates().get(0));
Map<String, Object> data = dataStore.getManufacturer(id);
if (data != null) {
URI serviceRoot = getContext().getPathInfo().getServiceRoot();
ODataEntityProviderPropertiesBuilder propertiesBuilder =
EntityProviderWriteProperties.serviceRoot(serviceRoot);
return EntityProvider.writeEntry(contentType, entitySet, data, propertiesBuilder.build());
}
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
} else if (uriInfo.getNavigationSegments().size() == 1) {
// navigation first level, simplified example for illustration purposes only
EdmEntitySet entitySet = uriInfo.getTargetEntitySet();
Map<String, Object> data = null;
if (ENTITY_SET_NAME_MANUFACTURERS.equals(entitySet.getName())) {
int carKey = getKeyValue(uriInfo.getKeyPredicates().get(0));
data = dataStore.getManufacturerFor(carKey);
}
if (data != null) {
return EntityProvider.writeEntry(contentType, uriInfo.getTargetEntitySet(),
data, EntityProviderWriteProperties.serviceRoot(getContext().getPathInfo().getServiceRoot()).build());
}
throw new ODataNotFoundException(ODataNotFoundException.ENTITY);
}
throw new ODataNotImplementedException();
}
private int getKeyValue(final KeyPredicate key) throws ODataException {
EdmProperty property = key.getProperty();
EdmSimpleType type = (EdmSimpleType) property.getType();
return type.valueOfString(key.getLiteral(), EdmLiteralKind.DEFAULT, property.getFacets(), Integer.class);
}
}