/**
* Inserts values into a table that has an unique id as identifier.
*
* @param table The affected table.
* @param values The values to be inserted/ updated.
* @param mId The identifier of the affected row.
* @return The number of rows affected on update, the rowId on insert, -1 on error.
*/
public int doInsertOrUpdate(String table, ContentValues values, Where where) {
int result;
open();
Cursor oldVersion = get(table, where, null);
if (oldVersion.moveToNext() && values.size() != 0) {
String whereClause = null;
if (where != null) {
whereClause = where.toString().replace(" WHERE ", "");
}
result = mDb.update(table, values, whereClause, null);
} else {
String nullColumnHack = null;
if (values.size() == 0) {
// if no fields are defined on a model instance the nullColumnHack
// needs to be utilized in order to insert an empty row.
nullColumnHack = Model.PK;
}
result = (int) mDb.insertOrThrow(table, nullColumnHack, values);
}
oldVersion.close();
close();
return result;
}
/**
* Delete one object or a set of objects from a specific table.
*
* @param table Query table.
* @param where {@link Where} clause to find the object.
* @return Number of affected rows.
*/
public int delete(String table, Where where) {
open();
int affectedRows = mDb.delete(table, where.toString().replace(" WHERE ", ""), null);
close();
return affectedRows;
}
/**
* Query the database for a specific item.
*
* @param table Query table.
* @param where {@link Where} clause to apply.
* @param limit {@link Limit} clause to apply.
* @return {@link Cursor} that represents the query result.
*/
private Cursor get(String table, Where where, Limit limit) {
String whereClause = null;
if (where != null) {
whereClause = where.toString().replace(" WHERE ", "");
Log.i("ANDORM", "where: " + whereClause);
}
String limitClause = null;
if (limit != null) {
limitClause = limit.toString().replace(" LIMIT ", "");
}
Cursor result = mDb.query(table, null, whereClause, null, null, null, null, limitClause);
return result;
}
