public TableDef(string tabName, List <ColumnDef> columns, string distributedBy)
{
int npart = 1;
Dictionary <string, ColumnDef> cols = new Dictionary <string, ColumnDef>();
foreach (var c in columns)
{
cols.Add(c.name_, c);
}
name_ = tabName; columns_ = cols;
if (distributedBy != null)
{
cols.TryGetValue(distributedBy, out var partcol);
if (partcol is null)
{
throw new SemanticAnalyzeException($"can't find distribution column '{distributedBy}'");
}
distributedBy_ = partcol;
npart = QueryOption.num_machines_;
}
for (int i = 0; i < npart; i++)
{
distributions_.Add(new Distribution());
}
}
public TableDef(TableSource source, string tabName, List <ColumnDef> columns, string distributedBy)
{
int npart = 1;
Dictionary <string, ColumnDef> cols = new Dictionary <string, ColumnDef>();
foreach (var c in columns)
{
cols.Add(c.name_, c);
}
source_ = source;
name_ = Utils.normalizeName(tabName);
columns_ = cols;
Debug.Assert(distMethod_ == DistributionMethod.NonDistributed);
if (distributedBy != null)
{
ColumnDef partcol;
if (distributedBy == "REPLICATED")
{
distMethod_ = DistributionMethod.Replicated;
}
else if (distributedBy == "ROUNDROBIN")
{
distMethod_ = DistributionMethod.Roundrobin;
}
else
{
cols.TryGetValue(distributedBy, out partcol);
if (partcol is null)
{
throw new SemanticAnalyzeException($"can't find distribution column '{distributedBy}'");
}
distMethod_ = DistributionMethod.Distributed;
distributedBy_ = partcol;
}
npart = QueryOption.num_machines_;
}
for (int i = 0; i < npart; i++)
{
distributions_.Add(new Distribution());
}
Debug.Assert(distributedBy_ is null || distMethod_ == DistributionMethod.Distributed);
}