/**
* 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.marmotta.ldclient.services.provider;
import org.apache.marmotta.ldclient.api.endpoint.Endpoint;
import org.apache.marmotta.ldclient.api.ldclient.LDClientService;
import org.apache.marmotta.ldclient.api.provider.DataProvider;
import org.apache.marmotta.ldclient.exception.DataRetrievalException;
import org.apache.marmotta.ldclient.model.ClientResponse;
import org.openrdf.repository.Repository;
import org.openrdf.repository.RepositoryException;
import org.openrdf.repository.sail.SailRepository;
import org.openrdf.sail.memory.MemoryStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Date;
/**
* Add file description here!
* <p/>
* Author: Sebastian Schaffert (sschaffert@apache.org)
*/
public class BlockingProvider implements DataProvider {
public static final String PROVIDER_NAME = "NONE";
private static Logger log = LoggerFactory.getLogger(BlockingProvider.class);
private static final Repository empty_repository = new SailRepository(new MemoryStore());
static {
try {
empty_repository.initialize();
} catch (RepositoryException e) {
}
}
/**
* Return the name of this data provider. To be used e.g. in the configuration and in log messages.
*
* @return
*/
@Override
public String getName() {
return PROVIDER_NAME;
}
/**
* Return the list of mime types accepted by this data provider.
*
* @return
*/
@Override
public String[] listMimeTypes() {
return new String[0];
}
/**
* Retrieve the data for a resource using the given http client and endpoint definition. The service is
* supposed to manage the connection handling itself. See AbstractHttpProvider
* for a generic implementation of this method.
*
* @param resource the resource to be retrieved
* @param endpoint the endpoint definition
* @return a completely specified client response, including expiry information and the set of triples
*/
@Override
public ClientResponse retrieveResource(String resource, LDClientService client, Endpoint endpoint) throws DataRetrievalException {
log.info("blocked retrieval of resource {}", resource);
long defaultExpires = client.getClientConfiguration().getDefaultExpiry();
Date expiresDate = new Date(System.currentTimeMillis() + defaultExpires * 1000);
ClientResponse result = new ClientResponse(200, empty_repository);
result.setExpires(expiresDate);
return result;
}
}