Android Open Source - Sunshine Weather Provider

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From Project

Back to project page Sunshine.

License

The source code is released under:

MIT License

Java Source Code

package com.example.android.sunshine.app.data;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.net.Uri;
/*from  ww w.  jav  a  2  s  .  co  m*/
/**
 * Created by damodar on 12/12/14.
 */
public class WeatherProvider extends ContentProvider {

    private static final int WEATHER = 100;
    private static final int WEATHER_WITH_LOCATION = 101;
    private static final int WEATHER_WITH_LOCATION_AND_DATE = 102;
    private static final int LOCATION = 300;
    private static final int LOCATION_ID = 301;

    private  static  final UriMatcher sUriMatcher = buildUriMatcher();

    private WeatherDbHelper mOpenHelper;

    private  static UriMatcher buildUriMatcher() {

        final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
        final String authority = WeatherContract.CONTENT_AUTHORITY;

        matcher.addURI(authority, WeatherContract.PATH_WEATHER, WEATHER);
        matcher.addURI(authority, WeatherContract.PATH_WEATHER + "/*", WEATHER_WITH_LOCATION);
        matcher.addURI(authority, WeatherContract.PATH_WEATHER + "/*/*", WEATHER_WITH_LOCATION_AND_DATE);

        matcher.addURI(authority, WeatherContract.PATH_LOCATION, LOCATION);
        matcher.addURI(authority, WeatherContract.PATH_LOCATION + "/#", LOCATION_ID);

        return matcher;
    }

    @Override
    public boolean onCreate() {

        mOpenHelper = new WeatherDbHelper(getContext());
        return true;
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {

        Cursor retCursor;
        switch (sUriMatcher.match(uri))
        {
//            weather/*/*
            case WEATHER_WITH_LOCATION_AND_DATE: {
                retCursor = null;
                break;
            }
//            weather/*
            case WEATHER_WITH_LOCATION: {
                retCursor = null;
                break;
            }
//            weather
            case WEATHER: {
                retCursor = mOpenHelper.getReadableDatabase().query(WeatherContract.WeatherEntry.TABLE_NAME,
                        projection,
                        selection,
                        selectionArgs,
                        null,
                        null,
                        sortOrder);
                break;
            }
//            location
            case LOCATION: {
                retCursor = mOpenHelper.getReadableDatabase().query(WeatherContract.LocationEntry.TABLE_NAME,
                        projection,
                        selection,
                        selectionArgs,
                        null,
                        null,
                        sortOrder);
                break;
            }
//            location/*
            case LOCATION_ID: {
                retCursor = mOpenHelper.getReadableDatabase().query(WeatherContract.LocationEntry.TABLE_NAME,
                        projection,
                        WeatherContract.LocationEntry._ID +  " = '" + ContentUris.parseId(uri) + "'",
                        null,
                        null,
                        null,
                        sortOrder);
                break;
            }
            default:
                throw new UnsupportedOperationException("Unknown uri: " + uri);
        }
        retCursor.setNotificationUri(getContext().getContentResolver(), uri);
        return retCursor;
    }

    @Override
    public String getType(Uri uri) {
        final int match = sUriMatcher.match(uri);
        switch (match) {
            case WEATHER_WITH_LOCATION_AND_DATE:
                return  WeatherContract.WeatherEntry.CONTENT_ITEM_TYPE;

            case WEATHER_WITH_LOCATION:
                return  WeatherContract.WeatherEntry.CONTENT_TYPE;

            case WEATHER:
                return  WeatherContract.WeatherEntry.CONTENT_TYPE;

            case LOCATION:
                return  WeatherContract.LocationEntry.CONTENT_TYPE;

            case LOCATION_ID:
                return  WeatherContract.LocationEntry.CONTENT_ITEM_TYPE;
            default:
                throw  new UnsupportedOperationException("Unknown Uri : " + uri);

        }
    }

    @Override
    public Uri insert(Uri uri, ContentValues contentValues) {
        return null;
    }

    @Override
    public int delete(Uri uri, String s, String[] strings) {
        return 0;
    }

    @Override
    public int update(Uri uri, ContentValues contentValues, String s, String[] strings) {
        return 0;
    }
}

Java Source Code List

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