public override string ToString()
{
System.Text.StringBuilder sb = new System.Text.StringBuilder("Select ");
if (top > 0)
{
sb.Append(" TOP ").Append(top);
}
if (distinct)
{
sb.Append(" DISTINCT");
}
sb.Append(" ");
string aliasString = null;
string valueString = null;
bool started = false;
if (CountFields() == 0)
{
sb.Append("...");
}
else
{
for (int i = 0; i < CountFields(); i++)
{
Net.Vpc.Upa.Expressions.QueryField fi = GetField(i);
Net.Vpc.Upa.Expressions.Expression e = fi.GetExpression();
valueString = System.Convert.ToString(e);
aliasString = fi.GetAlias();
if (started)
{
sb.Append(",");
}
else
{
started = true;
}
if (aliasString == null)
{
sb.Append(valueString);
}
else
{
sb.Append(valueString);
sb.Append(" ");
sb.Append(Net.Vpc.Upa.Expressions.ExpressionHelper.EscapeIdentifier(aliasString));
}
}
}
if (GetEntity() == null)
{
}
else
{
sb.Append(" From ");
if (GetEntity() is Net.Vpc.Upa.Expressions.Select)
{
sb.Append(GetEntity().ToString());
}
else
{
Net.Vpc.Upa.Expressions.EntityName entityName = (Net.Vpc.Upa.Expressions.EntityName)GetEntity();
sb.Append(entityName);
}
}
if (GetEntityAlias() != null)
{
sb.Append(" ").Append(Net.Vpc.Upa.Expressions.ExpressionHelper.EscapeIdentifier(GetEntityAlias()));
}
for (int i = 0; i < CountJoins(); i++)
{
Net.Vpc.Upa.Expressions.JoinCriteria e = GetJoin(i);
sb.Append(" ").Append(e);
}
Net.Vpc.Upa.Expressions.Expression c = GetWhere();
if (c != null && c.IsValid())
{
sb.Append(" Where ").Append(c);
}
if (CountGroupByItems() > 0)
{
sb.Append(" ");
int maxGroups = CountGroupByItems();
sb.Append("Group By ");
for (int i = 0; i < maxGroups; i++)
{
if (i > 0)
{
sb.Append(", ");
}
sb.Append(GetGroupBy(i));
}
}
int maxOrders = CountOrderByItems();
if (maxOrders > 0)
{
sb.Append(" ");
sb.Append("Order By ");
for (int i = 0; i < maxOrders; i++)
{
if (i > 0)
{
sb.Append(", ");
}
sb.Append(GetOrderBy(i));
if (IsOrderAscending(i))
{
sb.Append(" Asc ");
}
else
{
sb.Append(" Desc ");
}
}
}
return(sb.ToString());
}
protected internal virtual Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledSelect CompileSelect(Net.Vpc.Upa.Expressions.Select v, Net.Vpc.Upa.Impl.Uql.ExpressionTranslationManager manager, Net.Vpc.Upa.Impl.Uql.ExpressionDeclarationList declarations)
{
if (v == null)
{
return(null);
}
Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledSelect s = new Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledSelect();
s.SetDistinct(v.IsDistinct());
s.SetTop(v.GetTop());
Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledNameOrSelect nameOrSelect = (Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledNameOrSelect)manager.TranslateAny(v.GetEntity(), declarations);
string entityAlias = v.GetEntityAlias();
System.Collections.Generic.HashSet <string> aliases = new System.Collections.Generic.HashSet <string>();
if (entityAlias == null)
{
if (nameOrSelect is Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledEntityName)
{
entityAlias = ((Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledEntityName)nameOrSelect).GetName();
}
else
{
entityAlias = "ALIAS";
}
int i = 0;
while (true)
{
string a2 = i == 0 ? entityAlias : (entityAlias + i);
if (!aliases.Contains(a2))
{
aliases.Add(a2);
entityAlias = a2;
break;
}
i++;
}
}
s.From(nameOrSelect, entityAlias);
for (int i = 0; i < v.CountJoins(); i++)
{
Net.Vpc.Upa.Expressions.JoinCriteria c = v.GetJoin(i);
Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledNameOrSelect jnameOrSelect = (Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledNameOrSelect)manager.TranslateAny(c.GetEntity(), declarations);
entityAlias = c.GetEntityAlias();
if (entityAlias == null)
{
if (nameOrSelect is Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledEntityName)
{
entityAlias = ((Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledEntityName)nameOrSelect).GetName();
}
else
{
entityAlias = "ALIAS";
}
i = 0;
while (true)
{
string a2 = i == 0 ? entityAlias : (entityAlias + i);
if (!aliases.Contains(a2))
{
aliases.Add(a2);
entityAlias = a2;
break;
}
i++;
}
}
Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledJoinCriteria cc = new Net.Vpc.Upa.Impl.Uql.Compiledexpression.CompiledJoinCriteria(c.GetJoinType(), jnameOrSelect, entityAlias, manager.TranslateAny(c.GetCondition(), declarations));
s.Join(cc);
}
for (int i = 0; i < v.CountFields(); i++)
{
Net.Vpc.Upa.Expressions.QueryField field = v.GetField(i);
s.Field(manager.TranslateAny(field.GetExpression(), declarations), field.GetAlias());
}
s.Where(manager.TranslateAny(v.GetWhere(), declarations));
s.Having(manager.TranslateAny(v.GetHaving(), declarations));
for (int i = 0; i < v.CountGroupByItems(); i++)
{
Net.Vpc.Upa.Expressions.Expression c = v.GetGroupBy(i);
s.GroupBy(manager.TranslateAny(c, declarations));
}
for (int i = 0; i < v.CountOrderByItems(); i++)
{
Net.Vpc.Upa.Expressions.Expression c = v.GetOrderBy(i);
s.OrderBy(manager.TranslateAny(c, declarations), v.IsOrderAscending(i));
}
return(s);
}
