@Override
public int deleteAll(Class<?> claxx) {
acquireReference();
try {
SQLiteDatabase db = mHelper.getWritableDatabase();
SQLStatement stmt = SQLBuilder.buildDeleteAllSql(claxx);
int num = stmt.execDelete(db);
// 删除关系映射
final MapInfo mapTable = SQLBuilder.buildDelAllMappingSql(claxx);
if (mapTable != null && !mapTable.isEmpty()) {
Transaction.execute(
db,
new Worker<Boolean>() {
@Override
public Boolean doTransaction(SQLiteDatabase db) throws Exception {
if (mapTable.delOldRelationSQL != null) {
for (SQLStatement st : mapTable.delOldRelationSQL) {
long rowId = st.execDelete(db);
if (Log.isPrint) {
Log.i(TAG, "Exec delete mapping success, nums: " + rowId);
}
}
}
return true;
}
});
}
return num;
} catch (Exception e) {
e.printStackTrace();
} finally {
releaseReference();
}
return SQLStatement.NONE;
}
/** 删除从[start,end]的数据 此方法暂不会删除关联映射表里的关系数据 */
@Override
public int delete(Class<?> claxx, long start, long end, String orderAscColumn) {
acquireReference();
try {
if (start < 0 || end < start) {
throw new RuntimeException("start must >=0 and smaller than end");
}
if (start != 0) {
start -= 1;
}
end = end == Integer.MAX_VALUE ? -1 : end - start;
SQLStatement stmt = SQLBuilder.buildDeleteSql(claxx, start, end, orderAscColumn);
return stmt.execDelete(mHelper.getWritableDatabase());
} catch (Exception e) {
e.printStackTrace();
} finally {
releaseReference();
}
return SQLStatement.NONE;
}
