public virtual string GetMigrationId(string migrationName)
{
DebugCheck.NotEmpty(migrationName);
if (!Exists())
{
return(null);
}
using (var connection = CreateConnection())
{
using (var context = CreateContext(connection))
{
var migrationIds
= CreateHistoryQuery(context)
.Select(h => h.MigrationId)
.Where(m => m.Substring(16) == migrationName)
.ToList();
if (!migrationIds.Any())
{
return(null);
}
if (migrationIds.Count() == 1)
{
return(migrationIds.Single());
}
throw Error.AmbiguousMigrationName(migrationName);
}
}
}
public virtual string GetMigrationId(string migrationName)
{
if (!this.Exists((string)null))
{
return((string)null);
}
DbConnection connection = (DbConnection)null;
try
{
connection = this.CreateConnection();
using (HistoryContext context = this.CreateContext(connection, (string)null))
{
List <string> list = this.CreateHistoryQuery(context, (string)null).Select <HistoryRow, string>((Expression <Func <HistoryRow, string> >)(h => h.MigrationId)).Where <string>((Expression <Func <string, bool> >)(m => m.Substring(16) == migrationName)).ToList <string>();
if (!list.Any <string>())
{
return((string)null);
}
if (list.Count <string>() == 1)
{
return(list.Single <string>());
}
throw Error.AmbiguousMigrationName((object)migrationName);
}
}
finally
{
this.DisposeConnection(connection);
}
}
