1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License 16 */ 17 18 package com.android.providers.contacts; 19 20 import android.content.ContentValues; 21 import android.database.DatabaseUtils; 22 import android.database.sqlite.SQLiteDatabase; 23 import android.net.Uri; 24 25 /** 26 * An interface which wraps key database modify operations (insert, update, delete) to perform 27 * additional tasks before or after the database modification operation. A typical use case is to 28 * generate notification when a database is modified. 29 */ 30 public interface DatabaseModifier { 31 /** 32 * Use this method to insert a value which you would otherwise do using the 33 * {@link SQLiteDatabase#insert(String, String, ContentValues)} method. 34 */ 35 public abstract long insert(String table, String nullColumnHack, ContentValues values); 36 /** 37 * Use this method to insert a value which you would otherwise do using the 38 * {@link DatabaseUtils.InsertHelper#insert(ContentValues)} method. 39 */ 40 public abstract long insert(ContentValues values); 41 /** 42 * Use this method to update a table which you would otherwise do using the 43 * {@link SQLiteDatabase#update(String, ContentValues, String, String[])} method. 44 */ 45 public abstract int update(Uri uri, String table, ContentValues values, 46 String whereClause, String[] whereArgs); 47 /** 48 * Use this method to delete entries from a table which you would otherwise do using the 49 * {@link SQLiteDatabase#delete(String, String, String[])} method. 50 */ 51 public abstract int delete(String table, String whereClause, String[] whereArgs); 52 53 void startBulkOperation(); 54 55 void yieldBulkOperation(); 56 57 void finishBulkOperation(); 58 } 59
