2 * Copyright (C) 2007 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package android.widget;
19 import android.database.Cursor;
22 * This class can be used by external clients of CursorAdapter and
23 * CursorTreeAdapter to define how the content of the adapter should be
26 * @see #runQuery(CharSequence)
28 public interface FilterQueryProvider {
30 * Runs a query with the specified constraint. This query is requested
31 * by the filter attached to this adapter.
33 * Contract: when constraint is null or empty, the original results,
34 * prior to any filtering, must be returned.
36 * @param constraint the constraint with which the query must
39 * @return a Cursor representing the results of the new query
41 Cursor runQuery(CharSequence constraint);