/*
* Copyright (C) 2012 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.google.android.vending.expansion.downloader.impl;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDoneException;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteStatement;
import android.provider.BaseColumns;
import android.util.Log;
public class DownloadsDB {
private static final String DATABASE_NAME = "DownloadsDB";
private static final int DATABASE_VERSION = 7;
public static final String LOG_TAG = DownloadsDB.class.getName();
final SQLiteOpenHelper mHelper;
SQLiteStatement mGetDownloadByIndex;
SQLiteStatement mUpdateCurrentBytes;
private static DownloadsDB mDownloadsDB;
long mMetadataRowID = -1;
int mVersionCode = -1;
int mStatus = -1;
int mFlags;
static public synchronized DownloadsDB getDB(Context paramContext) {
if (null == mDownloadsDB) {
return new DownloadsDB(paramContext);
}
return mDownloadsDB;
}
private SQLiteStatement getDownloadByIndexStatement() {
if (null == mGetDownloadByIndex) {
mGetDownloadByIndex = mHelper.getReadableDatabase().compileStatement(
"SELECT " + BaseColumns._ID + " FROM "
+ DownloadColumns.TABLE_NAME + " WHERE "
+ DownloadColumns.INDEX + " = ?");
}
return mGetDownloadByIndex;
}
private SQLiteStatement getUpdateCurrentBytesStatement() {
if (null == mUpdateCurrentBytes) {
mUpdateCurrentBytes = mHelper.getReadableDatabase().compileStatement(
"UPDATE " + DownloadColumns.TABLE_NAME + " SET " + DownloadColumns.CURRENTBYTES
+ " = ?" +
" WHERE " + DownloadColumns.INDEX + " = ?");
}
return mUpdateCurrentBytes;
}
private DownloadsDB(Context paramContext) {
this.mHelper = new DownloadsContentDBHelper(paramContext);
final SQLiteDatabase sqldb = mHelper.getReadableDatabase();
// Query for the version code, the row ID of the metadata (for future
// updating) the status and the flags
Cursor cur = sqldb.rawQuery("SELECT " +
MetadataColumns.APKVERSION + "," +
BaseColumns._ID + "," +
MetadataColumns.DOWNLOAD_STATUS + "," +
MetadataColumns.FLAGS +
" FROM "
+ MetadataColumns.TABLE_NAME + " LIMIT 1", null);
if (null != cur && cur.moveToFirst()) {
mVersionCode = cur.getInt(0);
mMetadataRowID = cur.getLong(1);
mStatus = cur.getInt(2);
mFlags = cur.getInt(3);
cur.close();
}
mDownloadsDB = this;
}
protected DownloadInfo getDownloadInfoByFileName(String fileName) {
final SQLiteDatabase sqldb = mHelper.getReadableDatabase();
Cursor itemcur = null;
try {
itemcur = sqldb.query(DownloadColumns.TABLE_NAME, DC_PROJECTION,
DownloadColumns.FILENAME + " = ?",
new String[] {
fileName
}, null, null, null);
if (null != itemcur && itemcur.moveToFirst()) {
return getDownloadInfoFromCursor(itemcur);
}
} finally {
if (null != itemcur)
itemcur.close();
}
return null;
}
public long getIDForDownloadInfo(final DownloadInfo di) {
return getIDByIndex(di.mIndex);
}
public long getIDByIndex(int index) {
SQLiteStatement downloadByIndex = getDownloadByIndexStatement();
downloadByIndex.clearBindings();
downloadByIndex.bindLong(1, index);
try {
return downloadByIndex.simpleQueryForLong();
} catch (SQLiteDoneException e) {
return -1;
}
}
public void updateDownloadCurrentBytes(final DownloadInfo di) {
SQLiteStatement downloadCurrentBytes = getUpdateCurrentBytesStatement();
downloadCurrentBytes.clearBindings();
downloadCurrentBytes.bindLong(1, di.mCurrentBytes);
downloadCurrentBytes.bindLong(2, di.mIndex);
downloadCurrentBytes.execute();
}
public void close() {
this.mHelper.close();
}
protected static class DownloadsContentDBHelper extends SQLiteOpenHelper {
DownloadsContentDBHelper(Context paramContext) {
super(paramContext, DATABASE_NAME, null, DATABASE_VERSION);
}
private String createTableQueryFromArray(String paramString,
String[][] paramArrayOfString) {
StringBuilder localStringBuilder = new StringBuilder();
localStringBuilder.append("CREATE TABLE ");
localStringBuilder.append(paramString);
localStringBuilder.append(" (");
int i = paramArrayOfString.length;
for (int j = 0;; j++) {
if (j >= i) {
localStringBuilder
.setLength(localStringBuilder.length() - 1);
localStringBuilder.append(");");
return localStringBuilder.toString();
}
String[] arrayOfString = paramArrayOfString[j];
localStringBuilder.append(' ');
localStringBuilder.append(arrayOfString[0]);
localStringBuilder.append(' ');
localStringBuilder.append(arrayOfString[1]);
localStringBuilder.append(',');
}
}
/**
* These two arrays must match and have the same order. For every Schema
* there must be a corresponding table name.
*/
static final private String[][][] sSchemas = {
DownloadColumns.SCHEMA, MetadataColumns.SCHEMA
};
static final private String[] sTables = {
DownloadColumns.TABLE_NAME, MetadataColumns.TABLE_NAME
};
/**
* Goes through all of the tables in sTables and drops each table if it
* exists. Altered to no longer make use of reflection.
*/
private void dropTables(SQLiteDatabase paramSQLiteDatabase) {
for (String table : sTables) {
try {
paramSQLiteDatabase.execSQL("DROP TABLE IF EXISTS " + table);
} catch (Exception localException) {
localException.printStackTrace();
}
}
}
/**
* Goes through all of the tables in sTables and creates a database with
* the corresponding schema described in sSchemas. Altered to no longer
* make use of reflection.
*/
public void onCreate(SQLiteDatabase paramSQLiteDatabase) {
int numSchemas = sSchemas.length;
for (int i = 0; i < numSchemas; i++) {
try {
String[][] schema = (String[][]) sSchemas[i];
paramSQLiteDatabase.execSQL(createTableQueryFromArray(
sTables[i], schema));
} catch (Exception localException) {
while (true)
localException.printStackTrace();
}
}
}
public void onUpgrade(SQLiteDatabase paramSQLiteDatabase,
int paramInt1, int paramInt2) {
Log.w(DownloadsContentDBHelper.class.getName(),
"Upgrading database from version " + paramInt1 + " to "
+ paramInt2 + ", which will destroy all old data");
dropTables(paramSQLiteDatabase);
onCreate(paramSQLiteDatabase);
}
}
public static class MetadataColumns implements BaseColumns {
public static final String APKVERSION = "APKVERSION";
public static final String DOWNLOAD_STATUS = "DOWNLOADSTATUS";
public static final String FLAGS = "DOWNLOADFLAGS";
public static final String[][] SCHEMA = {
{
BaseColumns._ID, "INTEGER PRIMARY KEY"
},
{
APKVERSION, "INTEGER"
}, {
DOWNLOAD_STATUS, "INTEGER"
},
{
FLAGS, "INTEGER"
}
};
public static final String TABLE_NAME = "MetadataColumns";
public static final String _ID = "MetadataColumns._id";
}
public static class DownloadColumns implements BaseColumns {
public static final String INDEX = "FILEIDX";
public static final String URI = "URI";
public static final String FILENAME = "FN";
public static final String ETAG = "ETAG";
public static final String TOTALBYTES = "TOTALBYTES";
public static final String CURRENTBYTES = "CURRENTBYTES";
public static final String LASTMOD = "LASTMOD";
public static final String STATUS = "STATUS";
public static final String CONTROL = "CONTROL";
public static final String NUM_FAILED = "FAILCOUNT";
public static final String RETRY_AFTER = "RETRYAFTER";
public static final String REDIRECT_COUNT = "REDIRECTCOUNT";
public static final String[][] SCHEMA = {
{
BaseColumns._ID, "INTEGER PRIMARY KEY"
},
{
INDEX, "INTEGER UNIQUE"
}, {
URI, "TEXT"
},
{
FILENAME, "TEXT UNIQUE"
}, {
ETAG, "TEXT"
},
{
TOTALBYTES, "INTEGER"
}, {
CURRENTBYTES, "INTEGER"
},
{
LASTMOD, "INTEGER"
}, {
STATUS, "INTEGER"
},
{
CONTROL, "INTEGER"
}, {
NUM_FAILED, "INTEGER"
},
{
RETRY_AFTER, "INTEGER"
}, {
REDIRECT_COUNT, "INTEGER"
}
};
public static final String TABLE_NAME = "DownloadColumns";
public static final String _ID = "DownloadColumns._id";
}
private static final String[] DC_PROJECTION = {
DownloadColumns.FILENAME,
DownloadColumns.URI, DownloadColumns.ETAG,
DownloadColumns.TOTALBYTES, DownloadColumns.CURRENTBYTES,
DownloadColumns.LASTMOD, DownloadColumns.STATUS,
DownloadColumns.CONTROL, DownloadColumns.NUM_FAILED,
DownloadColumns.RETRY_AFTER, DownloadColumns.REDIRECT_COUNT,
DownloadColumns.INDEX
};
private static final int FILENAME_IDX = 0;
private static final int URI_IDX = 1;
private static final int ETAG_IDX = 2;
private static final int TOTALBYTES_IDX = 3;
private static final int CURRENTBYTES_IDX = 4;
private static final int LASTMOD_IDX = 5;
private static final int STATUS_IDX = 6;
private static final int CONTROL_IDX = 7;
private static final int NUM_FAILED_IDX = 8;
private static final int RETRY_AFTER_IDX = 9;
private static final int REDIRECT_COUNT_IDX = 10;
private static final int INDEX_IDX = 11;
/**
* This function will add a new file to the database if it does not exist.
*
* @param di DownloadInfo that we wish to store
* @return the row id of the record to be updated/inserted, or -1
*/
public boolean updateDownload(DownloadInfo di) {
ContentValues cv = new ContentValues();
cv.put(DownloadColumns.INDEX, di.mIndex);
cv.put(DownloadColumns.FILENAME, di.mFileName);
cv.put(DownloadColumns.URI, di.mUri);
cv.put(DownloadColumns.ETAG, di.mETag);
cv.put(DownloadColumns.TOTALBYTES, di.mTotalBytes);
cv.put(DownloadColumns.CURRENTBYTES, di.mCurrentBytes);
cv.put(DownloadColumns.LASTMOD, di.mLastMod);
cv.put(DownloadColumns.STATUS, di.mStatus);
cv.put(DownloadColumns.CONTROL, di.mControl);
cv.put(DownloadColumns.NUM_FAILED, di.mNumFailed);
cv.put(DownloadColumns.RETRY_AFTER, di.mRetryAfter);
cv.put(DownloadColumns.REDIRECT_COUNT, di.mRedirectCount);
return updateDownload(di, cv);
}
public boolean updateDownload(DownloadInfo di, ContentValues cv) {
long id = di == null ? -1 : getIDForDownloadInfo(di);
try {
final SQLiteDatabase sqldb = mHelper.getWritableDatabase();
if (id != -1) {
if (1 != sqldb.update(DownloadColumns.TABLE_NAME,
cv, DownloadColumns._ID + " = " + id, null)) {
return false;
}
} else {
return -1 != sqldb.insert(DownloadColumns.TABLE_NAME,
DownloadColumns.URI, cv);
}
} catch (android.database.sqlite.SQLiteException ex) {
ex.printStackTrace();
}
return false;
}
public int getLastCheckedVersionCode() {
return mVersionCode;
}
public boolean isDownloadRequired() {
final SQLiteDatabase sqldb = mHelper.getReadableDatabase();
Cursor cur = sqldb.rawQuery("SELECT Count(*) FROM "
+ DownloadColumns.TABLE_NAME + " WHERE "
+ DownloadColumns.STATUS + " <> 0", null);
try {
if (null != cur && cur.moveToFirst()) {
return 0 == cur.getInt(0);
}
} finally {
if (null != cur)
cur.close();
}
return true;
}
public int getFlags() {
return mFlags;
}
public boolean updateFlags(int flags) {
if (mFlags != flags) {
ContentValues cv = new ContentValues();
cv.put(MetadataColumns.FLAGS, flags);
if (updateMetadata(cv)) {
mFlags = flags;
return true;
} else {
return false;
}
} else {
return true;
}
};
public boolean updateStatus(int status) {
if (mStatus != status) {
ContentValues cv = new ContentValues();
cv.put(MetadataColumns.DOWNLOAD_STATUS, status);
if (updateMetadata(cv)) {
mStatus = status;
return true;
} else {
return false;
}
} else {
return true;
}
};
public boolean updateMetadata(ContentValues cv) {
final SQLiteDatabase sqldb = mHelper.getWritableDatabase();
if (-1 == this.mMetadataRowID) {
long newID = sqldb.insert(MetadataColumns.TABLE_NAME,
MetadataColumns.APKVERSION, cv);
if (-1 == newID)
return false;
mMetadataRowID = newID;
} else {
if (0 == sqldb.update(MetadataColumns.TABLE_NAME, cv,
BaseColumns._ID + " = " + mMetadataRowID, null))
return false;
}
return true;
}
public boolean updateMetadata(int apkVersion, int downloadStatus) {
ContentValues cv = new ContentValues();
cv.put(MetadataColumns.APKVERSION, apkVersion);
cv.put(MetadataColumns.DOWNLOAD_STATUS, downloadStatus);
if (updateMetadata(cv)) {
mVersionCode = apkVersion;
mStatus = downloadStatus;
return true;
} else {
return false;
}
};
public boolean updateFromDb(DownloadInfo di) {
final SQLiteDatabase sqldb = mHelper.getReadableDatabase();
Cursor cur = null;
try {
cur = sqldb.query(DownloadColumns.TABLE_NAME, DC_PROJECTION,
DownloadColumns.FILENAME + "= ?",
new String[] {
di.mFileName
}, null, null, null);
if (null != cur && cur.moveToFirst()) {
setDownloadInfoFromCursor(di, cur);
return true;
}
return false;
} finally {
if (null != cur) {
cur.close();
}
}
}
public void setDownloadInfoFromCursor(DownloadInfo di, Cursor cur) {
di.mUri = cur.getString(URI_IDX);
di.mETag = cur.getString(ETAG_IDX);
di.mTotalBytes = cur.getLong(TOTALBYTES_IDX);
di.mCurrentBytes = cur.getLong(CURRENTBYTES_IDX);
di.mLastMod = cur.getLong(LASTMOD_IDX);
di.mStatus = cur.getInt(STATUS_IDX);
di.mControl = cur.getInt(CONTROL_IDX);
di.mNumFailed = cur.getInt(NUM_FAILED_IDX);
di.mRetryAfter = cur.getInt(RETRY_AFTER_IDX);
di.mRedirectCount = cur.getInt(REDIRECT_COUNT_IDX);
}
public DownloadInfo getDownloadInfoFromCursor(Cursor cur) {
DownloadInfo di = new DownloadInfo(cur.getInt(INDEX_IDX),
cur.getString(FILENAME_IDX), this.getClass().getPackage()
.getName());
setDownloadInfoFromCursor(di, cur);
return di;
}
public DownloadInfo[] getDownloads() {
final SQLiteDatabase sqldb = mHelper.getReadableDatabase();
Cursor cur = null;
try {
cur = sqldb.query(DownloadColumns.TABLE_NAME, DC_PROJECTION, null,
null, null, null, null);
if (null != cur && cur.moveToFirst()) {
DownloadInfo[] retInfos = new DownloadInfo[cur.getCount()];
int idx = 0;
do {
DownloadInfo di = getDownloadInfoFromCursor(cur);
retInfos[idx++] = di;
} while (cur.moveToNext());
return retInfos;
}
return null;
} finally {
if (null != cur) {
cur.close();
}
}
}
}
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