/// <summary>
/// Restores database files, pages and objects from a .csv file data created with ExportToCSV
/// </summary>
/// <param name="session">the active session</param>
/// <param name="csvDirectory">Path to directory containing CSV files</param>
static public void ImportFromCSV(this SessionBase session, string csvDirectory)
{
const char fieldSeperator = ',';
DirectoryInfo di = new DirectoryInfo(csvDirectory);
#if WINDOWS_PHONE
List <FileInfo> files = di.GetFiles("*.csv").ToList();
#else
List <FileInfo> files = di.GetFiles("*.csv", SearchOption.TopDirectoryOnly).ToList();
#endif
Schema schema = session.OpenSchema(false);
using (StreamReader textReader = new StreamReader(Path.Combine(csvDirectory, "Database.csv")))
{
string header = textReader.ReadLine();
string dbInfoString = textReader.ReadLine();
while (dbInfoString != null)
{
string[] dbInfo = dbInfoString.Split(fieldSeperator);
UInt32 dbNum = UInt32.Parse(dbInfo[0]);
string dbName = dbInfo[1].Trim(new char[] { '"' });
Database db = null;
if (dbNum < 10)
{
db = session.OpenDatabase(dbNum, false, false);
}
if (db == null)
{
db = session.NewDatabase(dbNum, 0, dbName);
}
dbInfoString = textReader.ReadLine();
}
}
using (StreamReader textReader = new StreamReader(Path.Combine(csvDirectory, "Page.csv")))
{
string header = textReader.ReadLine();
string pageInfoString = textReader.ReadLine();
while (pageInfoString != null)
{
int i = 0;
string[] pageInfo = pageInfoString.Split(fieldSeperator);
UInt32 dbNum = UInt32.Parse(pageInfo[i++]);
UInt16 pageNum = UInt16.Parse(pageInfo[i++]);
UInt16 numberOfSlots = UInt16.Parse(pageInfo[i++]);
UInt16 firstFreeSlot = UInt16.Parse(pageInfo[i++]);
UInt64 versionNumber = UInt64.Parse(pageInfo[i++]);
PageInfo.encryptionKind encryptionKind = (PageInfo.encryptionKind)Enum.Parse(typeof(PageInfo.encryptionKind), pageInfo[i++]);
PageInfo.compressionKind compressed = (PageInfo.compressionKind)Enum.Parse(typeof(PageInfo.compressionKind), pageInfo[i++]);
UInt32 typeVersion = UInt32.Parse(pageInfo[i]);
Database db = session.OpenDatabase(dbNum, false, false);
Page page = db.PageCache[pageNum];
if (page == null)
{
page = new Page(db, pageNum, typeVersion, numberOfSlots);
page.PageInfo.Compressed = compressed;
page.PageInfo.Encryption = encryptionKind;
page.PageInfo.VersionNumber = versionNumber;
page.PageInfo.NumberOfSlots = numberOfSlots;
page.PageInfo.FirstFreeSlot = firstFreeSlot;
}
pageInfoString = textReader.ReadLine();
}
}
for (int i = 0; i < 2; i++)
{
foreach (FileInfo info in files)
{
string numberString = Regex.Match(info.Name, @"\d+").Value;
if (numberString.Length > 0)
{
UInt32 typeShortId = UInt32.Parse(numberString);
UInt16 slotNumber = (UInt16)typeShortId;
if ((i == 0 && slotNumber < Schema.s_bootupTypeCount) || (i == 1 && slotNumber >= Schema.s_bootupTypeCount))
{
TypeVersion tv = schema.GetTypeVersion(typeShortId, session);
if (tv != null)
{
using (StreamReader textReader = new StreamReader(info.FullName))
{
CsvReader csvReader = new CsvReader(textReader, true);
string[] fileldNames = csvReader.GetFieldHeaders();
foreach (string[] record in csvReader)
{
tv.ObjectFromStrings(record, fileldNames, session, schema);
}
}
}
}
}
}
}
}
