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*/
package com.google.refine.freebase.operations;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONWriter;
import com.google.refine.freebase.commands.UploadDataCommand;
import com.google.refine.history.HistoryEntry;
import com.google.refine.model.AbstractOperation;
import com.google.refine.model.Cell;
import com.google.refine.model.Project;
import com.google.refine.model.Recon;
import com.google.refine.model.Row;
import com.google.refine.model.changes.MassReconChange;
import com.google.refine.operations.OperationRegistry;
import com.google.refine.util.ParsingUtilities;
public class ImportQADataOperation extends AbstractOperation {
static public AbstractOperation reconstruct(Project project, JSONObject obj) throws Exception {
return new ImportQADataOperation();
}
public ImportQADataOperation() {
}
@Override
public void write(JSONWriter writer, Properties options)
throws JSONException {
writer.object();
writer.key("op"); writer.value(OperationRegistry.s_opClassToName.get(this.getClass()));
writer.key("description"); writer.value(getBriefDescription(null));
writer.endObject();
}
@Override
protected String getBriefDescription(Project project) {
return "Import QA DAta";
}
@Override
protected HistoryEntry createHistoryEntry(Project project, long historyEntryID) throws Exception {
Integer jobID = (Integer) project.getMetadata().getPreferenceStore().get(UploadDataCommand.s_dataLoadJobIDPref);
if (jobID == null) {
throw new InternalError("Project is not associated with any data loading job.");
}
Map<Long, String> reconIDToResult = new HashMap<Long, String>();
URL url = new URL("http://refinery.freebaseapps.com/get_answers/" + jobID);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(30000); // 30 seconds
LineNumberReader reader = new LineNumberReader(new InputStreamReader(conn.getInputStream()));
try {
String line;
while ((line = reader.readLine()) != null) {
JSONObject obj = ParsingUtilities.evaluateJsonStringToObject(line);
long reconID = Long.parseLong(obj.getString("recon_id").substring(3));
reconIDToResult.put(reconID, obj.getString("result"));
}
} finally {
reader.close();
}
Map<Long, Recon> oldRecons = new HashMap<Long, Recon>();
Map<Long, Recon> newRecons = new HashMap<Long, Recon>();
for (int r = 0; r < project.rows.size(); r++) {
Row row = project.rows.get(r);
for (int c = 0; c < row.cells.size(); c++) {
Cell cell = row.cells.get(c);
if (cell != null && cell.recon != null) {
Recon oldRecon = cell.recon;
if (reconIDToResult.containsKey(oldRecon.id)) {
Recon newRecon = oldRecon.dup();
newRecon.setFeature(Recon.Feature_qaResult, reconIDToResult.get(oldRecon.id));
reconIDToResult.remove(oldRecon.id);
oldRecons.put(oldRecon.id, oldRecon);
newRecons.put(oldRecon.id, newRecon);
}
}
}
}
return new HistoryEntry(
historyEntryID,
project,
getBriefDescription(project),
this,
new MassReconChange(newRecons, oldRecons)
);
}
}