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package com.google.refine.freebase.model.recon;
import java.io.InputStream;
import java.io.StringWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONWriter;
import com.google.refine.freebase.FreebaseTopic;
import com.google.refine.model.Cell;
import com.google.refine.model.Project;
import com.google.refine.model.Recon;
import com.google.refine.model.Recon.Judgment;
import com.google.refine.model.ReconCandidate;
import com.google.refine.model.Row;
import com.google.refine.model.recon.ReconConfig;
import com.google.refine.model.recon.ReconJob;
import com.google.refine.util.ParsingUtilities;
public class KeyBasedReconConfig extends StrictReconConfig {
final public FreebaseTopic namespace;
static public ReconConfig reconstruct(JSONObject obj) throws Exception {
JSONObject ns = obj.getJSONObject("namespace");
return new KeyBasedReconConfig(
new FreebaseTopic(
ns.getString("id"),
ns.getString("name")
)
);
}
public KeyBasedReconConfig(FreebaseTopic namespace) {
this.namespace = namespace;
}
static protected class KeyBasedReconJob extends ReconJob {
String key;
@Override
public String getStringKey() {
return key;
}
}
@Override
public ReconJob createJob(Project project, int rowIndex, Row row,
String columnName, Cell cell) {
KeyBasedReconJob job = new KeyBasedReconJob();
job.key = cell.value.toString().replace(' ', '_');
return job;
}
@Override
public int getBatchSize() {
return 10;
}
@Override
public String getBriefDescription(Project project, String columnName) {
return "Reconcile cells in column " + columnName + " to topics with keys in namespace " + namespace.id;
}
@Override
public void write(JSONWriter writer, Properties options)
throws JSONException {
writer.object();
writer.key("mode"); writer.value("strict");
writer.key("match"); writer.value("key");
writer.key("namespace"); namespace.write(writer, options);
writer.endObject();
}
@Override
public List<Recon> batchRecon(List<ReconJob> jobs, long historyEntryID) {
List<Recon> recons = new ArrayList<Recon>(jobs.size());
Map<String, Recon> keyToRecon = new HashMap<String, Recon>();
try {
String query = null;
{
StringWriter stringWriter = new StringWriter();
JSONWriter jsonWriter = new JSONWriter(stringWriter);
jsonWriter.object();
jsonWriter.key("query");
jsonWriter.array();
jsonWriter.object();
jsonWriter.key("id"); jsonWriter.value(null);
jsonWriter.key("name"); jsonWriter.value(null);
jsonWriter.key("guid"); jsonWriter.value(null);
jsonWriter.key("type"); jsonWriter.array(); jsonWriter.endArray();
jsonWriter.key("key");
jsonWriter.array();
jsonWriter.object();
jsonWriter.key("namespace");
jsonWriter.object();
jsonWriter.key("id"); jsonWriter.value(namespace.id);
jsonWriter.endObject();
jsonWriter.key("value"); jsonWriter.value(null);
jsonWriter.key("value|=");
jsonWriter.array();
for (ReconJob job : jobs) {
jsonWriter.value(((KeyBasedReconJob) job).key);
}
jsonWriter.endArray();
jsonWriter.endObject();
jsonWriter.endArray();
jsonWriter.endObject();
jsonWriter.endArray();
jsonWriter.endObject();
query = stringWriter.toString();
}
StringBuffer sb = new StringBuffer(1024);
sb.append(s_mqlreadService);
sb.append("?query=");
sb.append(ParsingUtilities.encode(query));
URL url = new URL(sb.toString());
URLConnection connection = url.openConnection();
connection.setConnectTimeout(5000);
connection.connect();
InputStream is = connection.getInputStream();
try {
String s = ParsingUtilities.inputStreamToString(is);
JSONObject o = ParsingUtilities.evaluateJsonStringToObject(s);
if (o.has("result")) {
JSONArray results = o.getJSONArray("result");
int count = results.length();
for (int i = 0; i < count; i++) {
JSONObject result = results.getJSONObject(i);
String key = result.getJSONArray("key").getJSONObject(0).getString("value");
JSONArray types = result.getJSONArray("type");
String[] typeIDs = new String[types.length()];
for (int j = 0; j < typeIDs.length; j++) {
typeIDs[j] = types.getString(j);
}
ReconCandidate candidate = new ReconCandidate(
result.getString("id"),
result.getString("name"),
typeIDs,
100
);
Recon recon = Recon.makeFreebaseRecon(historyEntryID);
recon.addCandidate(candidate);
recon.service = "mql";
recon.judgment = Judgment.Matched;
recon.judgmentAction = "auto";
recon.match = candidate;
recon.matchRank = 0;
keyToRecon.put(key, recon);
}
}
} finally {
is.close();
}
} catch (Exception e) {
e.printStackTrace();
}
for (ReconJob job : jobs) {
String key = ((KeyBasedReconJob) job).key;
Recon recon = keyToRecon.get(key);
if (recon == null) {
recon = createNoMatchRecon(historyEntryID);
}
recons.add(recon);
}
return recons;
}
}