Reorganize files in pglablib

The enitities and containers of the catalog now go into catalog subfolder
Models go into model

pglablib/catalog/PgConstraintContainer.cpp

@@ -0,0 +1,75 @@
+#include "PgConstraintContainer.h"
+#include "Pgsql_Col.h"
+#include <algorithm>
+
+std::string PgConstraintContainer::getLoadQuery() const
+{
+	std::string q =  R"__(
+SELECT oid, conname, connamespace, contype, condeferrable,
+	condeferred, convalidated, conrelid, contypid, conindid,
+	confrelid, confupdtype, confdeltype, confmatchtype,
+	conislocal, coninhcount, connoinherit, conkey, confkey,
+	conpfeqop, conppeqop, conffeqop, conexclop, conbin, consrc,
+	pg_get_constraintdef(oid)
+FROM pg_constraint)__";
+
+//	auto cat = m_catalog.lock();
+//	if (cat && cat->serverVersion() >= 90400)
+//		q += ", indisreplident ";
+//	q += "\nFROM pg_index";
+	return q;
+}
+
+
+
+PgConstraint PgConstraintContainer::loadElem(const Pgsql::Row &row)
+{
+	using namespace Pgsql;
+	Col col(row);
+	Oid oid = col.nextValue();
+	QString name = col.nextValue();
+	Oid ns_oid = col.nextValue();
+	PgConstraint v(m_catalog, oid, name, ns_oid);
+	col >> v.type >> v.deferrable
+		>> v.deferred >> v.validated >> v.relid >> v.typid >> v.indid
+		>> v.frelid >> v.fupdtype >> v.fdeltype >> v.fmatchtype
+		>> v.islocal >> v.inhcount >> v.noinherit
+		>> v.key >> v.fkey >> v.pfeqop >> v.ppeqop >> v.ffeqop >> v.exclop
+		>> v.bin >> v.src >> v.definition;
+	return v;
+}
+
+std::vector<PgConstraint> PgConstraintContainer::getFKeyForTableColumn(Oid relid, int16_t attnum) const
+{
+	//const PgConstraint *result = nullptr;
+	std::vector<PgConstraint> result;
+	// WHat do we want to find here? On ly single column constraints or all contstraints.
+	auto res = std::copy_if(m_container.begin(), m_container.end(), std::back_inserter(result),
+		[relid, attnum] (const auto &c) {
+			// the find on v.key may not look super efficient but remember it in general only has one or two elements.
+			return c.type == ConstraintType::ForeignKey && relid == c.relid &&
+					(std::find(c.key.begin(), c.key.end(), attnum) != c.key.end());
+		});
+	return result;
+}
+
+std::vector<PgConstraint> PgConstraintContainer::getConstraintsForRelation(Oid relid) const
+{
+	std::vector<PgConstraint> result;
+	for (const auto &e : m_container)
+		if (e.relid == relid)
+			result.push_back(e);
+	return result;
+}
+
+std::optional<PgConstraint> PgConstraintContainer::getPrimaryForRelation(Oid relid) const
+{
+	std::optional<PgConstraint> result;
+	for (const auto &e : m_container) {
+		if (e.relid == relid && e.type == ConstraintType::PrimaryKey) {
+			result = e;
+			break;
+		}
+	}
+	return result;
+}