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      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 
     17 package android.content;
     18 
     19 import android.net.Uri;
     20 import android.os.Parcel;
     21 import android.os.Parcelable;
     22 
     23 import com.android.internal.util.Preconditions;
     24 
     25 /**
     26  * Contains the result of the application of a {@link ContentProviderOperation}. It is guaranteed
     27  * to have exactly one of {@link #uri} or {@link #count} set.
     28  */
     29 public class ContentProviderResult implements Parcelable {
     30     public final Uri uri;
     31     public final Integer count;
     32     /** {@hide} */
     33     public final String failure;
     34 
     35     public ContentProviderResult(Uri uri) {
     36         this(Preconditions.checkNotNull(uri), null, null);
     37     }
     38 
     39     public ContentProviderResult(int count) {
     40         this(null, count, null);
     41     }
     42 
     43     /** {@hide} */
     44     public ContentProviderResult(String failure) {
     45         this(null, null, failure);
     46     }
     47 
     48     /** {@hide} */
     49     public ContentProviderResult(Uri uri, Integer count, String failure) {
     50         this.uri = uri;
     51         this.count = count;
     52         this.failure = failure;
     53     }
     54 
     55     public ContentProviderResult(Parcel source) {
     56         if (source.readInt() != 0) {
     57             uri = Uri.CREATOR.createFromParcel(source);
     58         } else {
     59             uri = null;
     60         }
     61         if (source.readInt() != 0) {
     62             count = source.readInt();
     63         } else {
     64             count = null;
     65         }
     66         if (source.readInt() != 0) {
     67             failure = source.readString();
     68         } else {
     69             failure = null;
     70         }
     71     }
     72 
     73     /** @hide */
     74     public ContentProviderResult(ContentProviderResult cpr, int userId) {
     75         uri = ContentProvider.maybeAddUserId(cpr.uri, userId);
     76         count = cpr.count;
     77         failure = cpr.failure;
     78     }
     79 
     80     @Override
     81     public void writeToParcel(Parcel dest, int flags) {
     82         if (uri != null) {
     83             dest.writeInt(1);
     84             uri.writeToParcel(dest, flags);
     85         } else {
     86             dest.writeInt(0);
     87         }
     88         if (count != null) {
     89             dest.writeInt(1);
     90             dest.writeInt(count);
     91         } else {
     92             dest.writeInt(0);
     93         }
     94         if (failure != null) {
     95             dest.writeInt(1);
     96             dest.writeString(failure);
     97         } else {
     98             dest.writeInt(0);
     99         }
    100     }
    101 
    102     @Override
    103     public int describeContents() {
    104         return 0;
    105     }
    106 
    107     public static final @android.annotation.NonNull Creator<ContentProviderResult> CREATOR =
    108             new Creator<ContentProviderResult>() {
    109         @Override
    110         public ContentProviderResult createFromParcel(Parcel source) {
    111             return new ContentProviderResult(source);
    112         }
    113 
    114         @Override
    115         public ContentProviderResult[] newArray(int size) {
    116             return new ContentProviderResult[size];
    117         }
    118     };
    119 
    120     @Override
    121     public String toString() {
    122         final StringBuilder sb = new StringBuilder("ContentProviderResult(");
    123         if (uri != null) {
    124             sb.append("uri=" + uri + " ");
    125         }
    126         if (count != null) {
    127             sb.append("count=" + count + " ");
    128         }
    129         if (uri != null) {
    130             sb.append("failure=" + failure + " ");
    131         }
    132         sb.deleteCharAt(sb.length() - 1);
    133         sb.append(")");
    134         return sb.toString();
    135     }
    136 }
    137