/*
* Created by Angel Leon (@gubatron), Alden Torres (aldenml)
* Copyright (c) 2011, 2012, FrostWire(TM). All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.bt.download.android.core.providers;
import java.util.HashMap;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
import android.os.Environment;
import android.util.Log;
import com.bt.download.android.core.providers.UniversalStore.Sharing;
import com.bt.download.android.core.providers.UniversalStore.Sharing.Media;
import com.bt.download.android.core.providers.UniversalStore.Sharing.SharingColumns;
/**
* This provider is used to specify which files are shared or not.
* If a file is new, it will not appear here until it's "unshared"
* This helps to keep data synchronization to a minimum.
*
* @author gubatron
* @author aldenml
*
*/
public class SharingProvider extends ContentProvider {
private static final String TAG = "FW.SharingProvider";
private static final String DATABASE_NAME = "sharing.db";
private static final int DATABASE_VERSION = 1;
private static final String SHARING_TABLE_NAME = "sharing";
private static final int SHARING_ALL = 1;
private static final UriMatcher uriMatcher;
private static HashMap<String, String> sharingProjectionMap;
private DatabaseHelper databaseHelper;
static {
uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
uriMatcher.addURI(UniversalStore.UNIVERSAL_SHARING_AUTHORITY, "sharing", SHARING_ALL);
sharingProjectionMap = new HashMap<String, String>();
sharingProjectionMap.put(SharingColumns._ID, SharingColumns._ID);
sharingProjectionMap.put(SharingColumns.FILE_ID, SharingColumns.FILE_ID);
sharingProjectionMap.put(SharingColumns.FILE_TYPE, SharingColumns.FILE_TYPE);
sharingProjectionMap.put(SharingColumns.SHARED, SharingColumns.SHARED);
}
@Override
public boolean onCreate() {
databaseHelper = new DatabaseHelper(getContext());
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
if (!accept()) {
return null;
}
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
qb.setTables(SHARING_TABLE_NAME);
switch (uriMatcher.match(uri)) {
case SHARING_ALL:
qb.setProjectionMap(sharingProjectionMap);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
// Get the database and run the query
SQLiteDatabase db = databaseHelper.getReadableDatabase();
Cursor c = qb.query(db, projection, selection, selectionArgs, null, null, null);
// Tell the cursor what uri to watch, so it knows when its source data
// changes
c.setNotificationUri(getContext().getContentResolver(), uri);
return c;
}
@Override
public String getType(Uri uri) {
switch (uriMatcher.match(uri)) {
case SHARING_ALL:
return Media.CONTENT_TYPE;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
}
@Override
public Uri insert(Uri uri, ContentValues initialValues) {
if (!accept()) {
return null;
}
// Validate the requested uri
if (uriMatcher.match(uri) != SHARING_ALL) {
throw new IllegalArgumentException("Unknown URI " + uri);
}
ContentValues values;
if (initialValues != null) {
values = new ContentValues(initialValues);
} else {
values = new ContentValues();
}
// Make sure that the fields are all set
if (values.containsKey(SharingColumns.FILE_ID) == false) {
values.put(SharingColumns.FILE_ID, -1);
}
if (values.containsKey(SharingColumns.FILE_TYPE) == false) {
values.put(SharingColumns.FILE_TYPE, -1);
}
if (values.containsKey(SharingColumns.SHARED) == false) {
values.put(SharingColumns.SHARED, 0);
}
SQLiteDatabase db = databaseHelper.getWritableDatabase();
long rowId = db.insert(SHARING_TABLE_NAME, "", values);
if (rowId > 0) {
Uri sharingUri = ContentUris.withAppendedId(Sharing.Media.CONTENT_URI, rowId);
getContext().getContentResolver().notifyChange(sharingUri, null);
return sharingUri;
}
throw new SQLException("Failed to insert row into " + uri);
}
@Override
public int delete(Uri uri, String where, String[] whereArgs) {
if (!accept()) {
return 0;
}
SQLiteDatabase db = databaseHelper.getWritableDatabase();
int count;
switch (uriMatcher.match(uri)) {
case SHARING_ALL:
count = db.delete(SHARING_TABLE_NAME, where, whereArgs);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
@Override
public int update(Uri uri, ContentValues values, String where, String[] whereArgs) {
if (!accept()) {
return 0;
}
SQLiteDatabase db = databaseHelper.getWritableDatabase();
int count;
switch (uriMatcher.match(uri)) {
case SHARING_ALL:
count = db.update(SHARING_TABLE_NAME, values, where, whereArgs);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
private boolean accept() {
return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
}
/**
* This class helps open, create, and upgrade the database file.
*/
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + SHARING_TABLE_NAME + " (" + SharingColumns._ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + SharingColumns.FILE_ID + " INTEGER," + SharingColumns.FILE_TYPE + " INTEGER," + SharingColumns.SHARED + " INTEGER);");
db.execSQL("CREATE INDEX idx_sharing ON sharing (" + SharingColumns.FILE_TYPE + "," + SharingColumns.SHARED + ")");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading sharing database from version " + oldVersion + " to " + newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS " + SHARING_TABLE_NAME);
db.execSQL("DROP INDEX IF EXISTS idx_sharing");
onCreate(db);
}
}
}