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