/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
*
* This servlet implements a proxy pattern to allow for separation of the
* bigdata-blueprints package.
*
*/
package com.bigdata.rdf.sail.webapp;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
public class BlueprintsServletProxy extends BigdataRDFServlet {
private static final String DEFAULT_PROVIDER = "com.bigdata.blueprints.webapp.BlueprintsServlet";
static private final transient Logger log = Logger.getLogger(BlueprintsServletProxy.class);
/**
* Flag to signify a blueprints operation.
*/
public static final transient String ATTR_BLUEPRINTS = "blueprints";
/**
*
*/
private static final long serialVersionUID = 6037374358611489293L;
public void doPostRequest(HttpServletRequest req, HttpServletResponse resp) throws IOException
{
throw new RuntimeException("Running without the Blueprints package.");
}
public static String getDefaultProvider() {
return DEFAULT_PROVIDER;
}
public static class BlueprintsServletFactory {
public static BlueprintsServletProxy getInstance() {
return getInstance(DEFAULT_PROVIDER);
}
public static BlueprintsServletProxy getInstance(final String provider) {
try {
final Class<?> c = Class.forName(provider);
final Constructor<?> cons = c.getConstructor();
final Object object = cons.newInstance();
final BlueprintsServletProxy proxy = (BlueprintsServletProxy) object;
return proxy;
} catch (ClassNotFoundException | NoSuchMethodException
| SecurityException | InstantiationException
| IllegalAccessException | IllegalArgumentException
| InvocationTargetException e) {
if (log.isDebugEnabled()) {
log.debug(e.toString());
}
//If we're running without the blueprint package, just return a proxy.
return new BlueprintsServletProxy();
}
}
}
}