@Override
public void onCreate(final SQLiteDatabase db) {
Out.d(TAG, "Creation de la BDD");
// we go through the tables creation scripts
for (int i = 0; i < CREATE_TABLES.length; i++) {
Out.d(TAG, CREATE_TABLES[i]);
// we create each table into the database
db.execSQL(CREATE_TABLES[i]);
}
}
/**
* Initialize provider context
*
* @param context is the context of execution. If possible give the Application's context
*/
public static void initialize(final Context context) {
if (sContext == null) {
Out.d(TAG, "initialize!!");
sContext = context.getApplicationContext();
sDbHelper = new DatabaseHelper(sContext);
}
}
/** Codes returned by the URIMatcher corresponding to the URI analyzed */
@Override
public boolean onCreate() {
Out.d(TAG, "On Create BusinessObjectProvider");
initialize(getContext());
return true;
}
@Override
public int update(
final Uri uri, final ContentValues values, final String where, final String[] whereArgs) {
final int match = sUriMatcher.match(uri);
// get a readable database access
SQLiteDatabase db = sDbHelper.getWritableDatabase();
// log message
Out.d(TAG, "BusinessObjectProvider.query: uri=" + uri + ", match is " + match);
// we initialize the update counter
int count = 0;
String table = getTableName(match);
// throws an exception if there is no table name
if (table == null) throw new IllegalArgumentException("Unknown URI " + uri);
// update the database
count = db.update(table, values, where, whereArgs);
// we notify that a change happened
sContext.getContentResolver().notifyChange(uri, null);
return count;
}
@Override
public Cursor query(
final Uri uri,
final String[] columns,
final String where,
final String[] whereArgs,
final String order) {
Cursor c = null;
final int match = sUriMatcher.match(uri);
// get a readable database access
SQLiteDatabase db = sDbHelper.getReadableDatabase();
// log message
Out.d(TAG, "BusinessObjectProvider.query: uri=" + uri + ", match is " + match);
// we get the table and then query to the database
String table = getTableName(match);
c = db.query(table, columns, where, whereArgs, null, null, order);
// we notify that a change happened if it actually occurred
if ((c != null) && !isTemporary()) {
c.setNotificationUri(sContext.getContentResolver(), uri);
}
return c;
}
@Override
public Uri insert(final Uri uri, ContentValues values) {
// we get the type of the URI received
final int match = sUriMatcher.match(uri);
// log message
Out.d(TAG, "BusinessObjectProvider.insert: uri=" + uri + ", match is " + match);
// we manage the null ContentValues
if (values == null) values = new ContentValues();
// we prepare the database access
SQLiteDatabase db = sDbHelper.getWritableDatabase();
// we create the result values
long id = BusinessObjectDAO.ID_INVALID;
Uri resultUri;
// we get the table name and then insert into the database
String table = getTableName(match);
id = db.insert(table, "foo", values);
// we add the id received at the end of the URI
resultUri = ContentUris.withAppendedId(uri, id);
// we return the URI with the id of the entry at the end
return resultUri;
}
/**
* ***************************
*
* <p>ContentProvider's Functions
*
* <p>***************************
*/
@Override
public int delete(final Uri uri, final String where, final String[] whereArgs) {
final int match = sUriMatcher.match(uri);
Out.d(TAG, TAG + ".delete: uri=" + uri + ", match is " + match);
// We get the database access
SQLiteDatabase db = sDbHelper.getWritableDatabase();
int count;
// we get the table and then we delete the field into the database
String table = getTableName(match);
count = db.delete(table, where, whereArgs);
sContext.getContentResolver().notifyChange(uri, null);
return count;
}
@Override
public void onUpgrade(final SQLiteDatabase db, final int oldVersion, final int newVersion) {
Out.w(
TAG,
"Upgrading database from version "
+ oldVersion
+ " to "
+ newVersion
+ ", which will destroy all old data");
// we go through the tables names array
for (int i = 0; i < DATABASE_TABLES_NAMES.length; i++) {
// we DROP each table
db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLES_NAMES[i]);
}
// we recreate the table
onCreate(db);
}