BatchOperation.java revision 15ef1a8091c1557f175575671a5af62420088944 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5 * use this file except in compliance with the License. You may obtain a copy of
6 * 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, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations under
14 * the License.
15 */
16package com.example.android.samplesync.platform;
17
18import android.content.ContentProviderOperation;
19import android.content.ContentProviderResult;
20import android.content.ContentResolver;
21import android.content.Context;
22import android.content.OperationApplicationException;
23import android.net.Uri;
24import android.os.RemoteException;
25import android.provider.ContactsContract;
26import android.util.Log;
27
28import java.util.ArrayList;
29
30/**
31 * This class handles execution of batch mOperations on Contacts provider.
32 */
33final public class BatchOperation {
34
35    private final String TAG = "BatchOperation";
36
37    private final ContentResolver mResolver;
38
39    // List for storing the batch mOperations
40    private final ArrayList<ContentProviderOperation> mOperations;
41
42    public BatchOperation(Context context, ContentResolver resolver) {
43        mResolver = resolver;
44        mOperations = new ArrayList<ContentProviderOperation>();
45    }
46
47    public int size() {
48        return mOperations.size();
49    }
50
51    public void add(ContentProviderOperation cpo) {
52        mOperations.add(cpo);
53    }
54
55    public Uri execute() {
56        Uri result = null;
57
58        if (mOperations.size() == 0) {
59            return result;
60        }
61        // Apply the mOperations to the content provider
62        try {
63            ContentProviderResult[] results = mResolver.applyBatch(ContactsContract.AUTHORITY,
64                    mOperations);
65            if ((results != null) && (results.length > 0))
66                result = results[0].uri;
67        } catch (final OperationApplicationException e1) {
68            Log.e(TAG, "storing contact data failed", e1);
69        } catch (final RemoteException e2) {
70            Log.e(TAG, "storing contact data failed", e2);
71        }
72        mOperations.clear();
73        return result;
74    }
75}
76