GroupMetaDataLoader.java revision d78ee90c0d4d93b82ad440396e87ae4f47f53e93 
1/*
2 * Copyright (C) 2010 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.contacts;
17
18import android.content.Context;
19import android.content.CursorLoader;
20import android.net.Uri;
21import android.provider.ContactsContract.Groups;
22
23/**
24 * Group meta-data loader. Loads all groups or just a single group from the
25 * database (if given a {@link Uri}).
26 */
27public final class GroupMetaDataLoader extends CursorLoader {
28
29    private final static String[] COLUMNS = new String[] {
30        Groups.ACCOUNT_NAME,
31        Groups.ACCOUNT_TYPE,
32        Groups.DATA_SET,
33        Groups._ID,
34        Groups.TITLE,
35        Groups.AUTO_ADD,
36        Groups.FAVORITES,
37        Groups.GROUP_IS_READ_ONLY,
38        Groups.DELETED,
39    };
40
41    public final static int ACCOUNT_NAME = 0;
42    public final static int ACCOUNT_TYPE = 1;
43    public final static int DATA_SET = 2;
44    public final static int GROUP_ID = 3;
45    public final static int TITLE = 4;
46    public final static int AUTO_ADD = 5;
47    public final static int FAVORITES = 6;
48    public final static int IS_READ_ONLY = 7;
49    public final static int DELETED = 8;
50
51    public GroupMetaDataLoader(Context context, Uri groupUri) {
52        super(context, ensureIsGroupUri(groupUri), COLUMNS, Groups.ACCOUNT_TYPE + " NOT NULL AND "
53                + Groups.ACCOUNT_NAME + " NOT NULL", null, null);
54    }
55
56    /**
57     * Ensures that this is a valid group URI. If invalid, then an exception is
58     * thrown. Otherwise, the original URI is returned.
59     */
60    private static Uri ensureIsGroupUri(final Uri groupUri) {
61        // TODO: Fix ContactsProvider2 getType method to resolve the group Uris
62        if (groupUri == null) {
63            throw new IllegalArgumentException("Uri must not be null");
64        }
65        if (!groupUri.toString().startsWith(Groups.CONTENT_URI.toString())) {
66            throw new IllegalArgumentException("Invalid group Uri: " + groupUri);
67        }
68        return groupUri;
69    }
70}
71