1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
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
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
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
15 */
16package com.android.providers.contacts;
17
18import android.database.AbstractWindowedCursor;
19import android.database.Cursor;
20import android.database.CursorWindow;
21import android.database.DatabaseUtils;
22
23/**
24 * Implementation of an in-memory cursor backed by a cursor window.
25 */
26public class MemoryCursor extends AbstractWindowedCursor {
27
28    private final String[] mColumnNames;
29
30    public MemoryCursor(String name, String[] columnNames) {
31        setWindow(new CursorWindow(name));
32        mColumnNames = columnNames;
33    }
34
35    public void fillFromCursor(Cursor cursor) {
36        DatabaseUtils.cursorFillWindow(cursor, 0, getWindow());
37    }
38
39    @Override
40    public int getCount() {
41        return getWindow().getNumRows();
42    }
43
44    @Override
45    public String[] getColumnNames() {
46        return mColumnNames;
47    }
48}
49