internal DbFile(DbTransaction transaction, string fileName, IDataFile parent)
{
this.transaction = transaction;
this.fileName = fileName;
this.parent = parent;
}
internal void ReplayTableLogEntry(string entry, DbTransaction srcTransaction, bool historicChanges)
{
char t = entry[0];
char op = entry[1];
String name = entry.Substring(2);
// If this is a table operation,
if (t != 'T')
throw new ApplicationException("Transaction log entry error: " + entry);
if (op == 'C') {
CreateTable(name);
} else if (op == 'D') {
DeleteTable(name);
} else if (op == 'M' || op == 'S') {
// If it's a TS event (a structural change to the table), we need to
// pass this to the table merge function.
bool structuralChange = (op == 'S');
// To replay a table modification
if (tableCopySet == null)
tableCopySet = new List<string>();
if (!tableCopySet.Contains(name)) {
DbTable st = srcTransaction.GetTable(name);
DbTable dt = GetTable(name);
// Merge the source table into the destination table,
dt.MergeFrom(st, structuralChange, historicChanges);
tableCopySet.Add(name);
}
// Make sure to copy this event into the log in this transaction,
log.Add(entry);
} else {
throw new ApplicationException("Transaction log entry error: " + entry);
}
}
internal void ReplayFileLogEntry(string entry, DbTransaction srcTransaction)
{
// Get the operation type and operation code,
char t = entry[0];
char op = entry[1];
string name = entry.Substring(2);
// If this is a file operation,
if (t != 'F')
throw new ApplicationException("Transaction log entry error: " + entry);
if (op == 'C') {
CreateFile(name);
} else if (op == 'D') {
DeleteFile(name);
} else if (op == 'M') {
if (fileCopySet == null)
fileCopySet = new List<string>();
// Copy the contents from the source if it hasn't already been
// copied.
if (!fileCopySet.Contains(name)) {
srcTransaction.fileSet.CopyTo(name, fileSet);
fileCopySet.Add(name);
}
// Make sure to copy this event into the log in this transaction,
log.Add(entry);
} else {
throw new ApplicationException("Transaction log entry error: " + entry);
}
}