net.benmoran.affectsampler.AffectSerializer.java Source code

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Here is the source code for net.benmoran.affectsampler.AffectSerializer.java

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/*
 * 
 *  Copyright 2009 (C) Ben Moran
 *  
 *  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 net.benmoran.affectsampler;

import net.benmoran.provider.AffectSampleStore.AffectSamples;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;

public class AffectSerializer {

    ContentResolver mContentResolver;

    public AffectSerializer(ContentResolver contentResolver) {
        mContentResolver = contentResolver;
    }

    public String toJSONString() throws JSONException {
        return toJSONArray().toString();
    }

    public JSONArray toJSONArray() throws JSONException {
        Uri samples = AffectSamples.CONTENT_URI;
        String[] projection = new String[] { AffectSamples.COMMENT, AffectSamples.SCHEDULED_DATE,
                AffectSamples.CREATED_DATE, AffectSamples.EMOTION, AffectSamples.INTENSITY };

        Cursor cursor = mContentResolver.query(samples, projection, null, null,
                AffectSamples.CREATED_DATE + " ASC");
        JSONArray arr = new JSONArray();
        int emIndex = cursor.getColumnIndex(AffectSamples.EMOTION);
        int inIndex = cursor.getColumnIndex(AffectSamples.INTENSITY);
        int cdIndex = cursor.getColumnIndex(AffectSamples.CREATED_DATE);
        int sdIndex = cursor.getColumnIndex(AffectSamples.SCHEDULED_DATE);
        int coIndex = cursor.getColumnIndex(AffectSamples.COMMENT);

        for (cursor.moveToPosition(0); !cursor.isLast(); cursor.moveToNext()) {
            JSONObject o = new JSONObject();
            o.put(AffectSamples.EMOTION, cursor.getDouble(emIndex));
            o.put(AffectSamples.INTENSITY, cursor.getDouble(inIndex));
            if (cursor.getLong(sdIndex) > 0) {
                o.put(AffectSamples.SCHEDULED_DATE, cursor.getLong(sdIndex));
            } else {
                o.put(AffectSamples.SCHEDULED_DATE, null);
            }

            o.put(AffectSamples.CREATED_DATE, cursor.getLong(cdIndex));
            if (cursor.getString(coIndex) != null) {
                o.put(AffectSamples.COMMENT, cursor.getString(coIndex));
            } else {
                o.put(AffectSamples.COMMENT, null);
            }
            arr.put(o);
        }
        cursor.close();
        return arr;
    }
}