| /* |
| * Copyright (C) 2008 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 com.android.locationtracker.data; |
| |
| import android.content.ContentProvider; |
| import android.content.ContentUris; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.net.Uri; |
| import android.util.Log; |
| |
| /** |
| * Content provider for location tracking. |
| * |
| * It is recommended to use the TrackerDataHelper class to access this data |
| * rather than this class directly |
| */ |
| public class TrackerProvider extends ContentProvider { |
| |
| public static final Uri CONTENT_URI = Uri |
| .parse("content://com.android.locationtracker"); |
| |
| private static final String DB_NAME = "tracking.db"; |
| private static final String TABLE_NAME = "tracking"; |
| private static final int DB_VERSION = 1; |
| |
| private static final String LOG_TAG = "TrackerProvider"; |
| |
| /** |
| * This class helps open, create, and upgrade the database file. |
| */ |
| private static class DatabaseHelper extends SQLiteOpenHelper { |
| |
| DatabaseHelper(Context context) { |
| super(context, DB_NAME, null, DB_VERSION); |
| } |
| |
| @Override |
| public void onCreate(SQLiteDatabase db) { |
| StringBuilder queryBuilder = new StringBuilder(); |
| queryBuilder.append(String.format("CREATE TABLE %s (", TABLE_NAME)); |
| TrackerEntry.buildCreationString(queryBuilder); |
| |
| queryBuilder.append(");"); |
| db.execSQL(queryBuilder.toString()); |
| db.setVersion(DB_VERSION); |
| } |
| |
| @Override |
| public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| // TODO: reimplement this when dB version changes |
| Log.w(LOG_TAG, "Upgrading database from version " + oldVersion |
| + " to " + newVersion |
| + ", which will destroy all old data"); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME); |
| onCreate(db); |
| } |
| } |
| |
| private DatabaseHelper mOpenHelper; |
| |
| @Override |
| public boolean onCreate() { |
| mOpenHelper = new DatabaseHelper(getContext()); |
| return true; |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| int result = db.delete(TABLE_NAME, selection, selectionArgs); |
| getContext().getContentResolver().notifyChange(uri, null); |
| return result; |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues values) { |
| SQLiteDatabase db = mOpenHelper.getWritableDatabase(); |
| long rowId = db.insert(TABLE_NAME, null, values); |
| if (rowId > 0) { |
| Uri addedUri = ContentUris.withAppendedId(CONTENT_URI, rowId); |
| getContext().getContentResolver().notifyChange(addedUri, null); |
| return addedUri; |
| } |
| return null; |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, |
| String[] selectionArgs, String sortOrder) { |
| SQLiteDatabase db = mOpenHelper.getReadableDatabase(); |
| // TODO: extract limit from URI ? |
| Cursor cursor = db.query(TABLE_NAME, projection, selection, |
| selectionArgs, null, null, sortOrder); |
| getContext().getContentResolver().notifyChange(uri, null); |
| return cursor; |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, |
| String[] selectionArgs) { |
| throw new UnsupportedOperationException(); |
| } |
| } |