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/*
* Copyright (C) 2015 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.tv.dvr.provider;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteQueryBuilder;
import android.util.Log;
import com.android.tv.data.Channel;
import com.android.tv.dvr.Recording;
import com.android.tv.dvr.provider.DvrContract.DvrChannels;
import com.android.tv.dvr.provider.DvrContract.DvrPrograms;
import com.android.tv.dvr.provider.DvrContract.RecordingToPrograms;
import com.android.tv.dvr.provider.DvrContract.Recordings;
import java.util.ArrayList;
import java.util.List;
/**
* A data class for one recorded contents.
*/
public class DvrDatabaseHelper extends SQLiteOpenHelper {
private static final String TAG = "DvrDatabaseHelper";
private static final boolean DEBUG = true;
private static final int DATABASE_VERSION = 2;
private static final String DB_NAME = "dvr.db";
private static final String SQL_CREATE_RECORDINGS =
"CREATE TABLE " + Recordings.TABLE_NAME + "("
+ Recordings._ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + Recordings.COLUMN_PRIORITY
+ " INTEGER DEFAULT " + Long.MAX_VALUE + ","
+ Recordings.COLUMN_TYPE + " TEXT NOT NULL,"
+ Recordings.COLUMN_URI + " TEXT,"
+ Recordings.COLUMN_CHANNEL_ID + " INTEGER NOT NULL,"
+ Recordings.COLUMN_START_TIME_UTC_MILLIS + " INTEGER NOT NULL,"
+ Recordings.COLUMN_END_TIME_UTC_MILLIS + " INTEGER NOT NULL,"
+ Recordings.COLUMN_MEDIA_SIZE + " INTEGER,"
+ Recordings.COLUMN_STATE + " TEXT NOT NULL)";
private static final String SQL_CREATE_DVR_CHANNELS =
"CREATE TABLE " + DvrChannels.TABLE_NAME + "("
+ DvrChannels._ID + " INTEGER PRIMARY KEY AUTOINCREMENT)";
private static final String SQL_CREATE_DVR_PROGRAMS =
"CREATE TABLE " + DvrPrograms.TABLE_NAME + "("
+ DvrPrograms._ID + " INTEGER PRIMARY KEY AUTOINCREMENT)";
private static final String SQL_CREATE_RECORDING_PROGRAMS =
"CREATE TABLE " + RecordingToPrograms.TABLE_NAME + "("
+ RecordingToPrograms._ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"
+ RecordingToPrograms.COLUMN_RECORDING_ID + " INTEGER,"
+ RecordingToPrograms.COLUMN_PROGRAM_ID + " INTEGER,"
+ "FOREIGN KEY(" + RecordingToPrograms.COLUMN_RECORDING_ID
+ ") REFERENCES " + Recordings.TABLE_NAME + "(" + Recordings._ID
+ ") ON UPDATE CASCADE ON DELETE CASCADE,"
+ "FOREIGN KEY(" + RecordingToPrograms.COLUMN_PROGRAM_ID
+ ") REFERENCES " + DvrPrograms.TABLE_NAME + "(" + DvrPrograms._ID
+ ") ON UPDATE CASCADE ON DELETE CASCADE)";
private static final String SQL_DROP_RECORDINGS = "DROP TABLE IF EXISTS "
+ Recordings.TABLE_NAME;
private static final String SQL_DROP_DVR_CHANNELS = "DROP TABLE IF EXISTS "
+ DvrChannels.TABLE_NAME;
private static final String SQL_DROP_DVR_PROGRAMS = "DROP TABLE IF EXISTS "
+ DvrPrograms.TABLE_NAME;
private static final String SQL_DROP_RECORDING_PROGRAMS = "DROP TABLE IF EXISTS "
+ RecordingToPrograms.TABLE_NAME;
public static final String WHERE_RECORDING_ID_EQUALS = Recordings._ID + " = ?";
public DvrDatabaseHelper(Context context) {
super(context.getApplicationContext(), DB_NAME, null, DATABASE_VERSION);
}
@Override
public void onConfigure(SQLiteDatabase db) {
db.setForeignKeyConstraintsEnabled(true);
}
@Override
public void onCreate(SQLiteDatabase db) {
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_CREATE_RECORDINGS);
db.execSQL(SQL_CREATE_RECORDINGS);
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_CREATE_DVR_CHANNELS);
db.execSQL(SQL_CREATE_DVR_CHANNELS);
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_CREATE_DVR_PROGRAMS);
db.execSQL(SQL_CREATE_DVR_PROGRAMS);
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_CREATE_RECORDING_PROGRAMS);
db.execSQL(SQL_CREATE_RECORDING_PROGRAMS);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_DROP_RECORDING_PROGRAMS);
db.execSQL(SQL_DROP_RECORDING_PROGRAMS);
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_DROP_DVR_PROGRAMS);
db.execSQL(SQL_DROP_DVR_PROGRAMS);
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_DROP_DVR_CHANNELS);
db.execSQL(SQL_DROP_DVR_CHANNELS);
if (DEBUG) Log.d(TAG, "Executing SQL: " + SQL_DROP_RECORDINGS);
db.execSQL(SQL_DROP_RECORDINGS);
onCreate(db);
}
/**
* Handles the query request and returns a {@link Cursor}.
*/
public Cursor query(String tableName, String[] projections) {
SQLiteDatabase db = getReadableDatabase();
SQLiteQueryBuilder builder = new SQLiteQueryBuilder();
builder.setTables(tableName);
return builder.query(db, projections, null, null, null, null, null);
}
/**
* Inserts recordings.
*
* @return The list of recordings with id set. The id will be -1 if there was an error.
*/
public List<Recording> insertRecordings(Recording... recordings) {
updateChannelsFromRecordings(recordings);
SQLiteDatabase db = getReadableDatabase();
List<Recording> results = new ArrayList<>();
for (Recording r : recordings) {
ContentValues values = getContentValues(r);
long id = db.insert(Recordings.TABLE_NAME, null, values);
results.add(Recording.buildFrom(r).setId(id).build());
}
return results;
}
/**
* Update recordings.
*
* @return The list of row update counts. The count will be -1 if there was an error or 0
* if no match was found. The count is expected to be exactly 1 for each recording.
*/
public List<Integer> updateRecordings(Recording[] recordings) {
updateChannelsFromRecordings(recordings);
SQLiteDatabase db = getWritableDatabase();
List<Integer> results = new ArrayList<>();
long count = 0;
for (Recording r : recordings) {
ContentValues values = getContentValues(r);
int updated = db.update(Recordings.TABLE_NAME, values, Recordings._ID + " = ?",
new String[] {String.valueOf(r.getId())});
results.add(updated);
}
return results;
}
private void updateChannelsFromRecordings(Recording[] recordings) {
// TODO(DVR) implement/
// TODO(DVR) consider not deleting channels instead of keeping a separate table.
}
private ContentValues getContentValues(Recording r) {
ContentValues values = new ContentValues();
// TODO(DVR): use DVR channel id instead
Channel channel = r.getChannel();
if (channel != null) {
values.put(Recordings.COLUMN_CHANNEL_ID, channel.getId());
}
values.put(Recordings.COLUMN_PRIORITY, r.getPriority());
values.put(Recordings.COLUMN_START_TIME_UTC_MILLIS, r.getStartTimeMs());
values.put(Recordings.COLUMN_END_TIME_UTC_MILLIS, r.getEndTimeMs());
values.put(Recordings.COLUMN_STATE, r.getState());
values.put(Recordings.COLUMN_MEDIA_SIZE, r.getSize());
values.put(Recordings.COLUMN_TYPE, r.getType());
if (r.getUri() != null) {
values.put(Recordings.COLUMN_URI, r.getUri().toString());
}
return values;
}
/**
* Delete recordings.
*
* @return The list of row update counts. The count will be -1 if there was an error or 0
* if no match was found. The count is expected to be exactly 1 for each recording.
*/
public List<Integer> deleteRecordings(Recording[] recordings) {
SQLiteDatabase db = getWritableDatabase();
List<Integer> results = new ArrayList<>();
long count = 0;
for (Recording r : recordings) {
ContentValues values = getContentValues(r);
int deleted = db.delete(Recordings.TABLE_NAME, WHERE_RECORDING_ID_EQUALS,
new String[] {String.valueOf(r.getId())});
results.add(deleted);
}
return results;
}
}
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