ApplyHistoryFromR2RMLModelCommandFactory.java

/*******************************************************************************
 * Copyright 2012 University of Southern California
 * 
 * Licensed 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.
 * 
 * This code was developed by the Information Integration Group as part 
 * of the Karma project at the Information Sciences Institute of the 
 * University of Southern California.  For more information, publications, 
 * and related projects, please see: http://www.isi.edu/integration
 ******************************************************************************/

package edu.isi.karma.controller.command.worksheet;

import java.io.File;

import javax.servlet.http.HttpServletRequest;

import edu.isi.karma.controller.command.Command;
import edu.isi.karma.controller.command.CommandFactory;
import edu.isi.karma.rep.Workspace;
import edu.isi.karma.util.FileUtil;
import edu.isi.karma.webserver.ContextParametersRegistry;
import edu.isi.karma.webserver.ServletContextParameterMap;
import edu.isi.karma.webserver.ServletContextParameterMap.ContextParameter;

public class ApplyHistoryFromR2RMLModelCommandFactory extends CommandFactory {
	private enum Arguments {
		worksheetId, override, url
	}
	
	@Override
	public Command createCommand(HttpServletRequest request,
			Workspace workspace) {
		String worksheetId = request.getParameter(Arguments.worksheetId.name());
		ServletContextParameterMap contextParameters = ContextParametersRegistry.getInstance().getContextParameters(workspace.getContextId());
	
		boolean override = Boolean.parseBoolean(request.getParameter(Arguments.override.name()));
		String url = request.getParameter(Arguments.url.name());
		if(url == null) {
			File uploadedFile = FileUtil.downloadFileFromHTTPRequest(request, contextParameters.getParameterValue(ContextParameter.USER_UPLOADED_DIR));
			return new ApplyHistoryFromR2RMLModelCommand(getNewId(workspace), 
					Command.NEW_MODEL, uploadedFile, worksheetId, override);
		} else {
			return new ApplyHistoryFromR2RMLModelCommand(getNewId(workspace), 
					Command.NEW_MODEL, url, worksheetId, override);
		}
	}
	
	public Command createCommandFromFile(String model, String worksheetId, File uploadedFile,
			Workspace workspace, boolean override) {
		return new ApplyHistoryFromR2RMLModelCommand(getNewId(workspace), model, uploadedFile, worksheetId, override);
	}

	@Override
	public Class<? extends Command> getCorrespondingCommand()
	{
		return ApplyHistoryFromR2RMLModelCommand.class;
	}
}