static void MigrateTable <T>(Stopwatch sw, Expression <Func <T, object> > getIdExpression, ref long rows, ref long totalTime)
{
using (var session = ModelEntities.OpenPostgreSQLSession())
{
var entitiesCount = session.Query <T>().Count();
var rowsPerCycle = 200000;
var numOfCycles = (int)Math.Ceiling((double)entitiesCount / rowsPerCycle);
for (var i = 0; i < numOfCycles; i++)
{
var limitFrom = i * rowsPerCycle;
MigrateTablePartial(sw, getIdExpression, ref rows, ref totalTime, session, limitFrom, rowsPerCycle);
session.Clear();
GC.Collect();
}
}
}