1 /* 2 * Copyright (C) 2018 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 android.jobscheduler; 18 19 import android.content.ContentProvider; 20 import android.content.ContentValues; 21 import android.content.Context; 22 import android.content.UriMatcher; 23 import android.database.Cursor; 24 import android.database.sqlite.SQLiteDatabase; 25 import android.database.sqlite.SQLiteOpenHelper; 26 import android.net.Uri; 27 28 /** 29 * Stub content provider used for generating content change reports 30 */ 31 public class DummyJobContentProvider extends ContentProvider { 32 private static final String DATABASE_NAME = "dummy.db"; 33 private static final String NAME_VALUE_TABLE = "name_value"; 34 35 private DatabaseHelper mDbHelper; 36 private static UriMatcher sMatcher = new UriMatcher(UriMatcher.NO_MATCH); 37 38 private static final int MATCH_NAME_VALUE = 1; 39 40 public static final String AUTHORITY = "android.jobscheduler.dummyprovider"; 41 public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY); 42 43 public static final String _ID = "_id"; 44 public static final String NAME = "name"; 45 public static final String VALUE = "value"; 46 47 static { sMatcher.addURI(AUTHORITY, null, MATCH_NAME_VALUE)48 sMatcher.addURI(AUTHORITY, null, MATCH_NAME_VALUE); 49 } 50 51 /* 52 * (non-Javadoc) 53 * @see android.content.ContentProvider#onCreate() 54 */ 55 @Override onCreate()56 public boolean onCreate() { 57 mDbHelper = new DatabaseHelper(getContext()); 58 return true; 59 } 60 61 private class DatabaseHelper extends SQLiteOpenHelper { 62 private static final int DATABASE_VERSION = 1; 63 DatabaseHelper(Context context)64 DatabaseHelper(Context context) { 65 super(context, DATABASE_NAME, null, DATABASE_VERSION); 66 } 67 68 @Override onCreate(SQLiteDatabase db)69 public void onCreate(SQLiteDatabase db) { 70 // create an empty name_value table 71 db.execSQL("CREATE TABLE " + NAME_VALUE_TABLE + " (" + _ID + " INTEGER PRIMARY KEY," 72 + NAME + " TEXT," + VALUE + " TEXT"+ ");"); 73 } 74 75 @Override onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)76 public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 77 } 78 } 79 80 /* 81 * (non-Javadoc) 82 * @see android.content.ContentProvider#insert(android.net.Uri, 83 * android.content.ContentValues) 84 */ 85 @Override insert(Uri uri, ContentValues values)86 public Uri insert(Uri uri, ContentValues values) { 87 String tbName = getTableName(uri); 88 if (tbName == null) { 89 return null; 90 } 91 SQLiteDatabase db = mDbHelper.getWritableDatabase(); 92 db.insert(tbName, VALUE, values); 93 getContext().getContentResolver().notifyChange(uri, null); 94 return uri; 95 } 96 97 /* 98 * (non-Javadoc) 99 * @see android.content.ContentProvider#query(android.net.Uri, 100 * java.lang.String[], java.lang.String, java.lang.String[], 101 * java.lang.String) 102 */ 103 @Override query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)104 public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, 105 String sortOrder) { 106 String tbName = getTableName(uri); 107 if (tbName == null) { 108 return null; 109 } 110 SQLiteDatabase db = mDbHelper.getReadableDatabase(); 111 Cursor c = db.query(tbName, projection, selection, selectionArgs, null, null, sortOrder); 112 c.setNotificationUri(getContext().getContentResolver(), uri); 113 return c; 114 } 115 getTableName(Uri uri)116 private String getTableName(Uri uri) { 117 switch (sMatcher.match(uri)) { 118 case MATCH_NAME_VALUE: 119 return NAME_VALUE_TABLE; 120 default: 121 throw new UnsupportedOperationException(); 122 } 123 } 124 125 /* 126 * (non-Javadoc) 127 * @see android.content.ContentProvider#update(android.net.Uri, 128 * android.content.ContentValues, java.lang.String, java.lang.String[]) 129 */ 130 @Override update(Uri uri, ContentValues values, String selection, String[] selectionArgs)131 public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { 132 String tbName = getTableName(uri); 133 if (tbName == null) { 134 return 0; 135 } 136 SQLiteDatabase db = mDbHelper.getWritableDatabase(); 137 int count = db.update(tbName, values, selection, selectionArgs); 138 getContext().getContentResolver().notifyChange(uri, null); 139 return count; 140 } 141 142 /* 143 * (non-Javadoc) 144 * @see android.content.ContentProvider#delete(android.net.Uri, 145 * java.lang.String, java.lang.String[]) 146 */ 147 @Override delete(Uri uri, String selection, String[] selectionArgs)148 public int delete(Uri uri, String selection, String[] selectionArgs) { 149 String tbName = getTableName(uri); 150 if (tbName == null) { 151 return 0; 152 } 153 SQLiteDatabase db = mDbHelper.getWritableDatabase(); 154 int count = db.delete(tbName, selection, selectionArgs); 155 getContext().getContentResolver().notifyChange(uri, null); 156 return count; 157 } 158 159 /* 160 * (non-Javadoc) 161 * @see android.content.ContentProvider#getType(android.net.Uri) 162 */ 163 @Override getType(Uri uri)164 public String getType(Uri uri) { 165 return null; 166 } 167 } 168