| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package android.provider; |
| |
| import android.net.Uri; |
| import android.content.ContentProviderClient; |
| import android.content.ContentValues; |
| import android.content.ContentProviderOperation; |
| import android.content.ContentUris; |
| import android.accounts.Account; |
| import android.database.Cursor; |
| import android.os.RemoteException; |
| import android.util.Pair; |
| |
| /** |
| * The ContentProvider contract for associating data with ana data array account. |
| * This may be used by providers that want to store this data in a standard way. |
| */ |
| public class SyncStateContract { |
| public interface Columns extends BaseColumns { |
| /** |
| * A reference to the name of the account to which this data belongs |
| * <P>Type: STRING</P> |
| */ |
| public static final String ACCOUNT_NAME = "account_name"; |
| |
| /** |
| * A reference to the type of the account to which this data belongs |
| * <P>Type: STRING</P> |
| */ |
| public static final String ACCOUNT_TYPE = "account_type"; |
| |
| /** |
| * The sync data associated with this account. |
| * <P>Type: NONE</P> |
| */ |
| public static final String DATA = "data"; |
| } |
| |
| public static class Constants implements Columns { |
| public static final String CONTENT_DIRECTORY = "syncstate"; |
| } |
| |
| public static final class Helpers { |
| private static final String[] DATA_PROJECTION = new String[]{Columns.DATA, Columns._ID}; |
| private static final String SELECT_BY_ACCOUNT = |
| Columns.ACCOUNT_NAME + "=? AND " + Columns.ACCOUNT_TYPE + "=?"; |
| |
| /** |
| * Get the sync state that is associated with the account or null. |
| * @param provider the {@link ContentProviderClient} that is to be used to communicate |
| * with the {@link android.content.ContentProvider} that contains the sync state. |
| * @param uri the uri of the sync state |
| * @param account the {@link Account} whose sync state should be returned |
| * @return the sync state or null if there is no sync state associated with the account |
| * @throws RemoteException if there is a failure communicating with the remote |
| * {@link android.content.ContentProvider} |
| */ |
| public static byte[] get(ContentProviderClient provider, Uri uri, |
| Account account) throws RemoteException { |
| Cursor c = provider.query(uri, DATA_PROJECTION, SELECT_BY_ACCOUNT, |
| new String[]{account.name, account.type}, null); |
| |
| // Unable to query the provider |
| if (c == null) { |
| throw new RemoteException(); |
| } |
| |
| try { |
| if (c.moveToNext()) { |
| return c.getBlob(c.getColumnIndexOrThrow(Columns.DATA)); |
| } |
| } finally { |
| c.close(); |
| } |
| return null; |
| } |
| |
| /** |
| * Assigns the data array as the sync state for the given account. |
| * @param provider the {@link ContentProviderClient} that is to be used to communicate |
| * with the {@link android.content.ContentProvider} that contains the sync state. |
| * @param uri the uri of the sync state |
| * @param account the {@link Account} whose sync state should be set |
| * @param data the byte[] that contains the sync state |
| * @throws RemoteException if there is a failure communicating with the remote |
| * {@link android.content.ContentProvider} |
| */ |
| public static void set(ContentProviderClient provider, Uri uri, |
| Account account, byte[] data) throws RemoteException { |
| ContentValues values = new ContentValues(); |
| values.put(Columns.DATA, data); |
| values.put(Columns.ACCOUNT_NAME, account.name); |
| values.put(Columns.ACCOUNT_TYPE, account.type); |
| provider.insert(uri, values); |
| } |
| |
| public static Uri insert(ContentProviderClient provider, Uri uri, |
| Account account, byte[] data) throws RemoteException { |
| ContentValues values = new ContentValues(); |
| values.put(Columns.DATA, data); |
| values.put(Columns.ACCOUNT_NAME, account.name); |
| values.put(Columns.ACCOUNT_TYPE, account.type); |
| return provider.insert(uri, values); |
| } |
| |
| public static void update(ContentProviderClient provider, Uri uri, byte[] data) |
| throws RemoteException { |
| ContentValues values = new ContentValues(); |
| values.put(Columns.DATA, data); |
| provider.update(uri, values, null, null); |
| } |
| |
| public static Pair<Uri, byte[]> getWithUri(ContentProviderClient provider, Uri uri, |
| Account account) throws RemoteException { |
| Cursor c = provider.query(uri, DATA_PROJECTION, SELECT_BY_ACCOUNT, |
| new String[]{account.name, account.type}, null); |
| |
| if (c == null) { |
| throw new RemoteException(); |
| } |
| |
| try { |
| if (c.moveToNext()) { |
| long rowId = c.getLong(1); |
| byte[] blob = c.getBlob(c.getColumnIndexOrThrow(Columns.DATA)); |
| return Pair.create(ContentUris.withAppendedId(uri, rowId), blob); |
| } |
| } finally { |
| c.close(); |
| } |
| return null; |
| } |
| |
| /** |
| * Creates and returns a ContentProviderOperation that assigns the data array as the |
| * sync state for the given account. |
| * @param uri the uri of the sync state |
| * @param account the {@link Account} whose sync state should be set |
| * @param data the byte[] that contains the sync state |
| * @return the new ContentProviderOperation that assigns the data array as the |
| * account's sync state |
| */ |
| public static ContentProviderOperation newSetOperation(Uri uri, |
| Account account, byte[] data) { |
| ContentValues values = new ContentValues(); |
| values.put(Columns.DATA, data); |
| return ContentProviderOperation |
| .newInsert(uri) |
| .withValue(Columns.ACCOUNT_NAME, account.name) |
| .withValue(Columns.ACCOUNT_TYPE, account.type) |
| .withValues(values) |
| .build(); |
| } |
| |
| /** |
| * Creates and returns a ContentProviderOperation that assigns the data array as the |
| * sync state for the given account. |
| * @param uri the uri of the specific sync state to set |
| * @param data the byte[] that contains the sync state |
| * @return the new ContentProviderOperation that assigns the data array as the |
| * account's sync state |
| */ |
| public static ContentProviderOperation newUpdateOperation(Uri uri, byte[] data) { |
| ContentValues values = new ContentValues(); |
| values.put(Columns.DATA, data); |
| return ContentProviderOperation |
| .newUpdate(uri) |
| .withValues(values) |
| .build(); |
| } |
| } |
| } |