package edu.isi.karma.controller.command.alignment;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
import java.util.List;
import java.util.Scanner;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.Property;
import com.hp.hpl.jena.rdf.model.RDFNode;
import com.hp.hpl.jena.rdf.model.ResIterator;
import com.hp.hpl.jena.rdf.model.Resource;
import edu.isi.karma.controller.command.Command;
import edu.isi.karma.controller.command.CommandException;
import edu.isi.karma.controller.command.CommandType;
import edu.isi.karma.controller.update.AbstractUpdate;
import edu.isi.karma.controller.update.ErrorUpdate;
import edu.isi.karma.controller.update.UpdateContainer;
import edu.isi.karma.er.helper.TripleStoreUtil;
import edu.isi.karma.kr2rml.mapping.WorksheetR2RMLJenaModelParser;
import edu.isi.karma.modeling.Uris;
import edu.isi.karma.rep.Workspace;
import edu.isi.karma.view.VWorkspace;
public class SaveR2RMLModelCommand extends Command{
private String modelUrl;
private String tripleStoreUrl;
private String graphContext;
private String collection;
private String graphBaseUrl = "";
private boolean successful;
private static Logger logger = LoggerFactory.getLogger(SaveR2RMLModelCommand.class);
protected SaveR2RMLModelCommand(String id, String modelUrl, String url, String context, String collection) {
super(id);
this.modelUrl = modelUrl;
this.tripleStoreUrl = url;
this.graphContext = context;
this.collection = collection;
successful = false;
}
private enum JsonKeys {
updateType, fileUrl, worksheetId
}
@Override
public String getCommandName() {
return this.getClass().getSimpleName();
}
@Override
public String getTitle() {
return "Save R2RML Model";
}
@Override
public String getDescription() {
return "Save " + modelUrl;
}
@Override
public CommandType getCommandType() {
return CommandType.notInHistory;
}
public boolean getSuccessful() {
return successful;
}
@Override
public UpdateContainer doIt(Workspace workspace) throws CommandException {
UpdateContainer uc = new UpdateContainer();
if (collection.compareTo("Collection") == 0) {
try {
URL url = new URL(graphContext);
graphBaseUrl = url.getProtocol() + "://" + url.getHost() + "/worksheets/";
Scanner in = new Scanner(url.openStream());
JSONArray array = new JSONArray(in.nextLine());
in.close();
boolean result = true;
for (int i = 0; i < array.length(); i++) {
JSONObject obj = array.getJSONObject(i);
String modelUrl = obj.getString("url");
String context = graphContext;
if (context == null || context.trim().isEmpty()) {
String filename = modelUrl.substring(modelUrl.indexOf('-') + 1);
int location = filename.indexOf("-auto-model.ttl");
if (location == -1)
location = filename.indexOf("-model.ttl");
filename = filename.substring(0, location);
context = graphBaseUrl + filename;
}
result &= saveMapping(modelUrl, context);
//System.out.println("here: " + graphBaseUrl + filename);
}
if (result) {
logger.info("Saved collection to triple store");
uc.add(new AbstractUpdate() {
public void generateJson(String prefix, PrintWriter pw,
VWorkspace vWorkspace) {
JSONObject outputObject = new JSONObject();
try {
outputObject.put(JsonKeys.updateType.name(), "SaveCollection");
pw.println(outputObject.toString());
} catch (JSONException e) {
e.printStackTrace();
logger.error("Error occured while generating JSON!");
}
}
});
successful = result;
return uc;
}
}catch(Exception e) {
System.out.println("here");
e.printStackTrace();
logger.error("Error occured while saving R2RML Model!");
return new UpdateContainer(new ErrorUpdate("Error occured while saving R2RML model!"));
}
}
else {
boolean result = saveMapping(modelUrl, graphContext);
if (result) {
logger.info("Saved model to triple store");
uc.add(new AbstractUpdate() {
public void generateJson(String prefix, PrintWriter pw,
VWorkspace vWorkspace) {
JSONObject outputObject = new JSONObject();
try {
outputObject.put(JsonKeys.updateType.name(), "SaveModel");
pw.println(outputObject.toString());
} catch (JSONException e) {
e.printStackTrace();
logger.error("Error occured while generating JSON!");
}
}
});
successful = result;
return uc;
}
}
logger.error("Error occured while saving R2RML Model!");
return new UpdateContainer(new ErrorUpdate("Error occured while saving R2RML model!"));
}
@Override
public UpdateContainer undoIt(Workspace workspace) {
return null;
}
private boolean saveMapping(String modelUrl, String graphContext) {
try {
TripleStoreUtil utilObj = new TripleStoreUtil();
if (graphContext == null || graphContext.trim().compareTo("") == 0)
return false;
URL url = new URL(modelUrl);
StringWriter test = new StringWriter();
Model model = WorksheetR2RMLJenaModelParser.loadSourceModelIntoJenaModel(url);
Property rdfTypeProp = model.getProperty(Uris.RDF_TYPE_URI);
RDFNode node = model.getResource(Uris.KM_R2RML_MAPPING_URI);
ResIterator res = model.listResourcesWithProperty(rdfTypeProp, node);
List<Resource> resList = res.toList();
for(Resource r: resList)
{
model.add(r, model.getProperty(Uris.OWL_SAMEAS_URI), model.getResource(url.toString()));
}
model.write(test,"TTL");
model.close();
String content = test.getBuffer().toString();
test.close();
if (utilObj.testURIExists(tripleStoreUrl, graphContext, modelUrl)) {
utilObj.deleteMappingFromTripleStore(tripleStoreUrl, graphContext, modelUrl);
}
boolean result = utilObj.saveToStoreFromString(content, tripleStoreUrl, graphContext, new Boolean(false), null);
return result;
}catch (Exception e) {
return false;
}
}
}