@Override
public Cursor query(
Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
// Here's the switch statement that, given a URI, will determine what kind of request it is,
// and query the database accordingly.
Cursor retCursor;
switch (sUriMatcher.match(uri)) {
// "weather/*/*"
case WEATHER_WITH_LOCATION_AND_DATE:
{
retCursor = getWeatherByLocationSettingAndDate(uri, projection, sortOrder);
break;
}
// "weather/*"
case WEATHER_WITH_LOCATION:
{
retCursor = getWeatherByLocationSetting(uri, projection, sortOrder);
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;
}
default:
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
retCursor.setNotificationUri(getContext().getContentResolver(), uri);
return retCursor;
}
private Cursor getWeatherByLocationSettingAndDate(
Uri uri, String[] projection, String sortOrder) {
String locationSetting = WeatherContract.WeatherEntry.getLocationSettingFromUri(uri);
long date = WeatherContract.WeatherEntry.getDateFromUri(uri);
return sWeatherByLocationSettingQueryBuilder.query(
mOpenHelper.getReadableDatabase(),
projection,
sLocationSettingAndDaySelection,
new String[] {locationSetting, Long.toString(date)},
null,
null,
sortOrder);
}
private Cursor getWeatherByLocationSetting(Uri uri, String[] projection, String sortOrder) {
String locationSetting = WeatherContract.WeatherEntry.getLocationSettingFromUri(uri);
long startDate = WeatherContract.WeatherEntry.getStartDateFromUri(uri);
String[] selectionArgs;
String selection;
if (startDate == 0) {
selection = sLocationSettingSelection;
selectionArgs = new String[] {locationSetting};
} else {
selectionArgs = new String[] {locationSetting, Long.toString(startDate)};
selection = sLocationSettingWithStartDateSelection;
}
return sWeatherByLocationSettingQueryBuilder.query(
mOpenHelper.getReadableDatabase(),
projection,
selection,
selectionArgs,
null,
null,
sortOrder);
}
