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 
17 package com.android.email.data;
18 
19 import android.database.Cursor;
20 import android.database.MatrixCursor;
21 
22 import com.android.mail.utils.MatrixCursorWithCachedColumns;
23 
24 /**
25  * {@link MatrixCursor} which takes an extra {@link Cursor} to the constructor, and close
26  * it when self is closed.
27  */
28 public class ClosingMatrixCursor extends MatrixCursorWithCachedColumns {
29     private final Cursor mInnerCursor;
30 
ClosingMatrixCursor(String[] columnNames, Cursor innerCursor)31     public ClosingMatrixCursor(String[] columnNames, Cursor innerCursor) {
32         super(columnNames);
33         mInnerCursor = innerCursor;
34     }
35 
36     @Override
close()37     public void close() {
38         if (mInnerCursor != null) {
39             mInnerCursor.close();
40         }
41         super.close();
42     }
43 }
44