1/*
2 * Copyright (C) 2009 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.vcard;
17
18import android.content.ContentProviderOperation;
19import android.content.ContentProviderResult;
20import android.content.ContentResolver;
21import android.content.OperationApplicationException;
22import android.net.Uri;
23import android.os.RemoteException;
24import android.provider.ContactsContract;
25import android.util.Log;
26
27import java.util.ArrayList;
28
29/**
30 * <P>
31 * {@link VCardEntryHandler} implementation which commits the entry to ContentResolver.
32 * </P>
33 * <P>
34 * Note:<BR />
35 * Each vCard may contain big photo images encoded by BASE64,
36 * If we store all vCard entries in memory, OutOfMemoryError may be thrown.
37 * Thus, this class push each VCard entry into ContentResolver immediately.
38 * </P>
39 */
40public class VCardEntryCommitter implements VCardEntryHandler {
41    public static String LOG_TAG = VCardConstants.LOG_TAG;
42
43    private final ContentResolver mContentResolver;
44    private long mTimeToCommit;
45    private int mCounter;
46    private ArrayList<ContentProviderOperation> mOperationList;
47    private final ArrayList<Uri> mCreatedUris = new ArrayList<Uri>();
48
49    public VCardEntryCommitter(ContentResolver resolver) {
50        mContentResolver = resolver;
51    }
52
53    @Override
54    public void onStart() {
55    }
56
57    @Override
58    public void onEnd() {
59        if (mOperationList != null) {
60            mCreatedUris.add(pushIntoContentResolver(mOperationList));
61        }
62
63        if (VCardConfig.showPerformanceLog()) {
64            Log.d(LOG_TAG, String.format("time to commit entries: %d ms", mTimeToCommit));
65        }
66    }
67
68    @Override
69    public void onEntryCreated(final VCardEntry vcardEntry) {
70        final long start = System.currentTimeMillis();
71        mOperationList = vcardEntry.constructInsertOperations(mContentResolver, mOperationList);
72        mCounter++;
73        if (mCounter >= 20) {
74            mCreatedUris.add(pushIntoContentResolver(mOperationList));
75            mCounter = 0;
76            mOperationList = null;
77        }
78        mTimeToCommit += System.currentTimeMillis() - start;
79    }
80
81    private Uri pushIntoContentResolver(ArrayList<ContentProviderOperation> operationList) {
82        try {
83            final ContentProviderResult[] results = mContentResolver.applyBatch(
84                    ContactsContract.AUTHORITY, operationList);
85
86            // the first result is always the raw_contact. return it's uri so
87            // that it can be found later. do null checking for badly behaving
88            // ContentResolvers
89            return ((results == null || results.length == 0 || results[0] == null)
90                            ? null : results[0].uri);
91        } catch (RemoteException e) {
92            Log.e(LOG_TAG, String.format("%s: %s", e.toString(), e.getMessage()));
93            return null;
94        } catch (OperationApplicationException e) {
95            Log.e(LOG_TAG, String.format("%s: %s", e.toString(), e.getMessage()));
96            return null;
97        }
98    }
99
100    /**
101     * Returns the list of created Uris. This list should not be modified by the caller as it is
102     * not a clone.
103     */
104   public ArrayList<Uri> getCreatedUris() {
105        return mCreatedUris;
106    }
107}