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  */
16 package com.android.vcard;
17 
18 import android.content.ContentProviderOperation;
19 import android.content.ContentProviderResult;
20 import android.content.ContentResolver;
21 import android.content.OperationApplicationException;
22 import android.net.Uri;
23 import android.os.RemoteException;
24 import android.provider.ContactsContract;
25 import android.util.Log;
26 
27 import 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  */
40 public 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 
VCardEntryCommitter(ContentResolver resolver)49     public VCardEntryCommitter(ContentResolver resolver) {
50         mContentResolver = resolver;
51     }
52 
53     @Override
onStart()54     public void onStart() {
55     }
56 
57     @Override
onEnd()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
onEntryCreated(final VCardEntry vcardEntry)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 
pushIntoContentResolver(ArrayList<ContentProviderOperation> operationList)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      */
getCreatedUris()104    public ArrayList<Uri> getCreatedUris() {
105         return mCreatedUris;
106     }
107 }