1 /*
2  * Copyright (C) 2011 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 com.android.contacts.common.util;
18 
19 import android.content.ContentResolver;
20 import android.content.ContentUris;
21 import android.net.Uri;
22 import android.provider.Contacts;
23 import android.provider.ContactsContract;
24 import android.provider.ContactsContract.RawContacts;
25 
26 /**
27  * Utility methods for the {@link ContactLoader}.
28  */
29 public final class ContactLoaderUtils {
30 
31     /** Static helper, not instantiable. */
ContactLoaderUtils()32     private ContactLoaderUtils() {}
33 
34     /**
35      * Transforms the given Uri and returns a Lookup-Uri that represents the contact.
36      * For legacy contacts, a raw-contact lookup is performed. An {@link IllegalArgumentException}
37      * can be thrown if the URI is null or the authority is not recognized.
38      *
39      * Do not call from the UI thread.
40      */
41     @SuppressWarnings("deprecation")
ensureIsContactUri(final ContentResolver resolver, final Uri uri)42     public static Uri ensureIsContactUri(final ContentResolver resolver, final Uri uri)
43             throws IllegalArgumentException {
44         if (uri == null) throw new IllegalArgumentException("uri must not be null");
45 
46         final String authority = uri.getAuthority();
47 
48         // Current Style Uri?
49         if (ContactsContract.AUTHORITY.equals(authority)) {
50             final String type = resolver.getType(uri);
51             // Contact-Uri? Good, return it
52             if (ContactsContract.Contacts.CONTENT_ITEM_TYPE.equals(type)) {
53                 return uri;
54             }
55 
56             // RawContact-Uri? Transform it to ContactUri
57             if (RawContacts.CONTENT_ITEM_TYPE.equals(type)) {
58                 final long rawContactId = ContentUris.parseId(uri);
59                 return RawContacts.getContactLookupUri(resolver,
60                         ContentUris.withAppendedId(RawContacts.CONTENT_URI, rawContactId));
61             }
62 
63             // Anything else? We don't know what this is
64             throw new IllegalArgumentException("uri format is unknown");
65         }
66 
67         // Legacy Style? Convert to RawContact
68         final String OBSOLETE_AUTHORITY = Contacts.AUTHORITY;
69         if (OBSOLETE_AUTHORITY.equals(authority)) {
70             // Legacy Format. Convert to RawContact-Uri and then lookup the contact
71             final long rawContactId = ContentUris.parseId(uri);
72             return RawContacts.getContactLookupUri(resolver,
73                     ContentUris.withAppendedId(RawContacts.CONTENT_URI, rawContactId));
74         }
75 
76         throw new IllegalArgumentException("uri authority is unknown");
77     }
78 }
79