ee.ioc.phon.netspeechapi.recsession.ChunkedWebRecSessionResult.java Source code

Introduction

Here is the source code for ee.ioc.phon.netspeechapi.recsession.ChunkedWebRecSessionResult.java

Source

/*
 * This file is part of Net Speech API.
 * Copyright 2011-2012, Institute of Cybernetics at Tallinn University of Technology
 *
 * Net Speech API is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * Net Speech API is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with ACE View.
 * If not, see http://www.gnu.org/licenses/.
 */

package ee.ioc.phon.netspeechapi.recsession;

import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.JSONValue;

/**
 *
 * For the input format description see: http://bark.phon.ioc.ee/speech-api/v1/
 *
 * @author Kaarel Kaljurand
 *
 */
public class ChunkedWebRecSessionResult implements RecSessionResult {

    private final List<Hypothesis> mHypotheses = new ArrayList<Hypothesis>();
    private final List<String> mUtterances = new ArrayList<String>();
    private final List<String> mLinearizations = new ArrayList<String>();

    public ChunkedWebRecSessionResult(InputStreamReader reader) throws IOException {
        Object obj = JSONValue.parse(reader);

        if (obj == null) {
            throw new IOException("Server response is not well-formed");
        }

        JSONObject jsonObj = (JSONObject) obj;
        for (Object o1 : (JSONArray) jsonObj.get("hypotheses")) {
            JSONObject jo1 = (JSONObject) o1;
            add(mUtterances, jo1.get("utterance"));
            Object lins = jo1.get("linearizations");
            List<Linearization> linearizations = new ArrayList<Linearization>();
            if (lins != null) {
                for (Object o2 : (JSONArray) lins) {
                    JSONObject jo2 = (JSONObject) o2;
                    add(mLinearizations, jo2.get("output"));

                    String output = objToString(jo2.get("output"));
                    String lang = objToString(jo2.get("lang"));
                    linearizations.add(new Linearization(output, lang));
                }
            }
            mHypotheses.add(new Hypothesis(objToString(jo1.get("utterance")), linearizations));
        }
    }

    public List<String> getLinearizations() {
        if (mLinearizations.isEmpty()) {
            return mUtterances;
        }
        return mLinearizations;
    }

    public List<String> getUtterances() {
        return mUtterances;
    }

    public List<Hypothesis> getHypotheses() {
        return mHypotheses;
    }

    private void add(List<String> list, Object obj) {
        if (obj != null) {
            String str = obj.toString();
            if (str.length() > 0) {
                list.add(str);
            }
        }
    }

    private String objToString(Object obj) {
        if (obj == null) {
            return null;
        }
        return obj.toString();
    }
}