1 files changed, 176 insertions, 0 deletions
diff --git a/core/java/android/provider/SyncStateContract.java b/core/java/android/provider/SyncStateContract.java
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+++ b/core/java/android/provider/SyncStateContract.java
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+/*
+ * 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);
+            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);
+            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();
+        }
+    }
+}