/*******************************************************************************
* 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.alignment;
import org.json.JSONArray;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import edu.isi.karma.controller.command.CommandException;
import edu.isi.karma.controller.command.CommandType;
import edu.isi.karma.controller.command.WorksheetCommand;
import edu.isi.karma.controller.command.selection.SuperSelectionManager;
import edu.isi.karma.controller.history.WorksheetCommandHistoryExecutor;
import edu.isi.karma.controller.update.ErrorUpdate;
import edu.isi.karma.controller.update.InfoUpdate;
import edu.isi.karma.controller.update.UpdateContainer;
import edu.isi.karma.controller.update.WorksheetUpdateFactory;
import edu.isi.karma.er.helper.TripleStoreUtil;
import edu.isi.karma.rep.Workspace;
public class ApplyModelFromTripleStoreCommand extends WorksheetCommand {
private final String modelName;
// private final String sourceName;
private enum sparqlKeys {
results, bindings, history, value
}
private static Logger logger = LoggerFactory.getLogger(ApplyModelFromTripleStoreCommand.class);
public ApplyModelFromTripleStoreCommand(String id, String worksheetId, String modelName,
String sourceName) {
super(id, worksheetId);
this.modelName = modelName;
// this.sourceName = sourceName;
}
@Override
public String getCommandName() {
return this.getClass().getSimpleName();
}
@Override
public String getTitle() {
return "Apply Model";
}
@Override
public String getDescription() {
return "";
}
@Override
public CommandType getCommandType() {
return CommandType.notInHistory;
}
@Override
public UpdateContainer doIt(Workspace workspace) throws CommandException {
// Get the command history from model by doing a sparql query on the Triple store
String query = "PREFIX km-dev:<http://isi.edu/integration/karma/dev#> " +
"SELECT ?history WHERE " +
"{ ?x km-dev:modelName \"" + modelName + "\" ." +
" ?x km-dev:hasWorksheetHistory ?history . }";
try {
// JSONObject res = TripleStoreUtil.invokeSparqlQuery(query, TripleStoreUtil.defaultModelsRepoUrl);
String sData = TripleStoreUtil.invokeSparqlQuery(query, TripleStoreUtil.defaultModelsRepoUrl, "application/sparql-results+json", null);
if (sData == null | sData.isEmpty()) {
logger.error("Empty response object from query : " + query);
}
JSONObject res = new JSONObject(sData);
JSONArray bindings = res.getJSONObject(sparqlKeys.results.name())
.getJSONArray(sparqlKeys.bindings.name());
if (bindings.length() == 0) {
return new UpdateContainer(new ErrorUpdate("No history found in the " +
"selected model!"));
}
String history = bindings.getJSONObject(0).getJSONObject(
sparqlKeys.history.name()).getString(sparqlKeys.value.name());
// Execute the history
WorksheetCommandHistoryExecutor histExecutor = new WorksheetCommandHistoryExecutor(
worksheetId, workspace);
if (history.isEmpty()) {
return new UpdateContainer(new ErrorUpdate("No history found in R2RML Model!"));
}
JSONArray historyJson = new JSONArray(history);
histExecutor.executeAllCommands(historyJson);
// Add worksheet updates that could have resulted out of the transformation commands
UpdateContainer c = WorksheetUpdateFactory.createRegenerateWorksheetUpdates(worksheetId, SuperSelectionManager.DEFAULT_SELECTION);
c.append(computeAlignmentAndSemanticTypesAndCreateUpdates(workspace));
c.add(new InfoUpdate("Model successfully applied!"));
return c;
} catch (Exception e) {
logger.error("Error applying model from triple store!", e);
return new UpdateContainer(new ErrorUpdate("Error applying model from triple store!"));
}
}
@Override
public UpdateContainer undoIt(Workspace workspace) {
// Not required
return null;
}
}