1 /* 2 * Copyright (C) 2008 Esmertec AG. 3 * Copyright (C) 2008 The Android Open Source Project 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 android.database.sqlite; 19 20 import android.content.ContentResolver; 21 import android.content.ContentValues; 22 import android.content.Context; 23 import android.database.Cursor; 24 import android.database.sqlite.SQLiteException; 25 import android.net.Uri; 26 import android.util.Log; 27 import android.widget.Toast; 28 29 /** 30 * @hide 31 */ 32 33 public final class SqliteWrapper { 34 private static final String TAG = "SqliteWrapper"; 35 private static final String SQLITE_EXCEPTION_DETAIL_MESSAGE 36 = "unable to open database file"; 37 38 private SqliteWrapper() { 39 // Forbidden being instantiated. 40 } 41 42 // FIXME: need to optimize this method. 43 private static boolean isLowMemory(SQLiteException e) { 44 return e.getMessage().equals(SQLITE_EXCEPTION_DETAIL_MESSAGE); 45 } 46 47 public static void checkSQLiteException(Context context, SQLiteException e) { 48 if (isLowMemory(e)) { 49 Toast.makeText(context, com.android.internal.R.string.low_memory, 50 Toast.LENGTH_SHORT).show(); 51 } else { 52 throw e; 53 } 54 } 55 56 public static Cursor query(Context context, ContentResolver resolver, Uri uri, 57 String[] projection, String selection, String[] selectionArgs, String sortOrder) { 58 try { 59 return resolver.query(uri, projection, selection, selectionArgs, sortOrder); 60 } catch (SQLiteException e) { 61 Log.e(TAG, "Catch a SQLiteException when query: ", e); 62 checkSQLiteException(context, e); 63 return null; 64 } 65 } 66 67 public static boolean requery(Context context, Cursor cursor) { 68 try { 69 return cursor.requery(); 70 } catch (SQLiteException e) { 71 Log.e(TAG, "Catch a SQLiteException when requery: ", e); 72 checkSQLiteException(context, e); 73 return false; 74 } 75 } 76 public static int update(Context context, ContentResolver resolver, Uri uri, 77 ContentValues values, String where, String[] selectionArgs) { 78 try { 79 return resolver.update(uri, values, where, selectionArgs); 80 } catch (SQLiteException e) { 81 Log.e(TAG, "Catch a SQLiteException when update: ", e); 82 checkSQLiteException(context, e); 83 return -1; 84 } 85 } 86 87 public static int delete(Context context, ContentResolver resolver, Uri uri, 88 String where, String[] selectionArgs) { 89 try { 90 return resolver.delete(uri, where, selectionArgs); 91 } catch (SQLiteException e) { 92 Log.e(TAG, "Catch a SQLiteException when delete: ", e); 93 checkSQLiteException(context, e); 94 return -1; 95 } 96 } 97 98 public static Uri insert(Context context, ContentResolver resolver, 99 Uri uri, ContentValues values) { 100 try { 101 return resolver.insert(uri, values); 102 } catch (SQLiteException e) { 103 Log.e(TAG, "Catch a SQLiteException when insert: ", e); 104 checkSQLiteException(context, e); 105 return null; 106 } 107 } 108 } 109
