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      1 /*
      2  * Copyright (C) 2017 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.dialer.calllog.database;
     17 
     18 import android.content.ContentProviderOperation;
     19 import android.content.ContentUris;
     20 import android.content.ContentValues;
     21 import android.content.Context;
     22 import android.content.OperationApplicationException;
     23 import android.os.RemoteException;
     24 import android.support.annotation.WorkerThread;
     25 import android.text.TextUtils;
     26 import com.android.dialer.calllog.database.contract.AnnotatedCallLogContract;
     27 import com.android.dialer.calllog.database.contract.AnnotatedCallLogContract.AnnotatedCallLog;
     28 import com.android.dialer.calllog.datasources.CallLogMutations;
     29 import com.android.dialer.common.Assert;
     30 import com.android.dialer.common.LogUtil;
     31 import com.android.dialer.common.concurrent.Annotations.BackgroundExecutor;
     32 import com.google.common.collect.Iterables;
     33 import com.google.common.util.concurrent.Futures;
     34 import com.google.common.util.concurrent.ListenableFuture;
     35 import com.google.common.util.concurrent.ListeningExecutorService;
     36 import java.util.ArrayList;
     37 import java.util.Arrays;
     38 import java.util.List;
     39 import java.util.Map.Entry;
     40 import javax.inject.Inject;
     41 
     42 /** Applies {@link CallLogMutations} to the annotated call log. */
     43 public class MutationApplier {
     44 
     45   private final ListeningExecutorService backgroundExecutorService;
     46 
     47   @Inject
     48   public MutationApplier(@BackgroundExecutor ListeningExecutorService backgroundExecutorService) {
     49     this.backgroundExecutorService = backgroundExecutorService;
     50   }
     51 
     52   /** Applies the provided {@link CallLogMutations} to the annotated call log. */
     53   public ListenableFuture<Void> applyToDatabase(CallLogMutations mutations, Context appContext) {
     54     if (mutations.isEmpty()) {
     55       return Futures.immediateFuture(null);
     56     }
     57     return backgroundExecutorService.submit(
     58         () -> {
     59           applyToDatabaseInternal(mutations, appContext);
     60           return null;
     61         });
     62   }
     63 
     64   @WorkerThread
     65   private void applyToDatabaseInternal(CallLogMutations mutations, Context appContext)
     66       throws RemoteException, OperationApplicationException {
     67     Assert.isWorkerThread();
     68 
     69     ArrayList<ContentProviderOperation> operations = new ArrayList<>();
     70 
     71     if (!mutations.getInserts().isEmpty()) {
     72       LogUtil.i(
     73           "MutationApplier.applyToDatabase", "inserting %d rows", mutations.getInserts().size());
     74       for (Entry<Long, ContentValues> entry : mutations.getInserts().entrySet()) {
     75         long id = entry.getKey();
     76         ContentValues contentValues = entry.getValue();
     77         operations.add(
     78             ContentProviderOperation.newInsert(
     79                     ContentUris.withAppendedId(AnnotatedCallLog.CONTENT_URI, id))
     80                 .withValues(contentValues)
     81                 .build());
     82       }
     83     }
     84 
     85     if (!mutations.getUpdates().isEmpty()) {
     86       LogUtil.i(
     87           "MutationApplier.applyToDatabase", "updating %d rows", mutations.getUpdates().size());
     88       for (Entry<Long, ContentValues> entry : mutations.getUpdates().entrySet()) {
     89         long id = entry.getKey();
     90         ContentValues contentValues = entry.getValue();
     91         operations.add(
     92             ContentProviderOperation.newUpdate(
     93                     ContentUris.withAppendedId(AnnotatedCallLog.CONTENT_URI, id))
     94                 .withValues(contentValues)
     95                 .build());
     96       }
     97     }
     98 
     99     if (!mutations.getDeletes().isEmpty()) {
    100       LogUtil.i(
    101           "MutationApplier.applyToDatabase", "deleting %d rows", mutations.getDeletes().size());
    102 
    103       // Batch the deletes into chunks of 999, the maximum size for SQLite selection args.
    104       Iterable<List<Long>> batches = Iterables.partition(mutations.getDeletes(), 999);
    105       for (List<Long> idsInBatch : batches) {
    106         String[] questionMarks = new String[idsInBatch.size()];
    107         Arrays.fill(questionMarks, "?");
    108 
    109         String whereClause =
    110             (AnnotatedCallLog._ID + " in (") + TextUtils.join(",", questionMarks) + ")";
    111 
    112         String[] whereArgs = new String[idsInBatch.size()];
    113         int i = 0;
    114         for (long id : idsInBatch) {
    115           whereArgs[i++] = String.valueOf(id);
    116         }
    117 
    118         operations.add(
    119             ContentProviderOperation.newDelete(AnnotatedCallLog.CONTENT_URI)
    120                 .withSelection(whereClause, whereArgs)
    121                 .build());
    122       }
    123     }
    124 
    125     appContext.getContentResolver().applyBatch(AnnotatedCallLogContract.AUTHORITY, operations);
    126   }
    127 }
    128