de.elomagic.vaadin.addon.speechrecognition.SpeechRecognitionResultDeserializer.java Source code

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Here is the source code for de.elomagic.vaadin.addon.speechrecognition.SpeechRecognitionResultDeserializer.java

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/*
 * Copyright 2014 Carsten Rambow.
 *
 * 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.
 */
package de.elomagic.vaadin.addon.speechrecognition;

import java.lang.reflect.Type;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;

/**
 * Helper class for deserialzing {@link SpeechRecognitionResult} class.
 *
 * @author Carsten Rambow
 */
public class SpeechRecognitionResultDeserializer implements JsonDeserializer<SpeechRecognitionResult> {

    @Override
    public SpeechRecognitionResult deserialize(final JsonElement json, final Type typeOfT,
            final JsonDeserializationContext context) throws JsonParseException {
        JsonObject o = json.getAsJsonObject();

        int length = o.get("length").getAsInt();
        SpeechRecognitionResult results = new SpeechRecognitionResult();
        for (int i = 0; i < length; i++) {
            JsonObject resultObject = o.getAsJsonObject(Integer.toString(i));
            results.add((SpeechRecognitionAlternative) context.deserialize(resultObject,
                    SpeechRecognitionAlternative.class));
        }

        return results;
    }

}