Reorganize files in pglablib

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

pglablib/catalog/PgClassContainer.cpp

@@ -0,0 +1,39 @@
+#include "PgClassContainer.h"
+#include "Pgsql_Connection.h"
+#include "Pgsql_Col.h"
+#include "PgDatabaseCatalog.h"
+#include "PgNamespaceContainer.h"
+#include <iterator>
+
+std::string PgClassContainer::getLoadQuery() const
+{
+	return "SELECT oid, relname, relnamespace, reltype, reloftype, "
+		"  relowner, relam, relfilenode, reltablespace, relpages, "
+		"  reltuples, reltoastrelid, relisshared, relpersistence, "
+		"  relkind, relhasoids, relispopulated, relfrozenxid, relminmxid, "
+		"  relacl, reloptions \n"
+		"FROM pg_catalog.pg_class";
+}
+
+PgClass PgClassContainer::loadElem(const Pgsql::Row &row)
+{
+	Pgsql::Col col(row);
+	Oid	class_oid = col.nextValue();
+	QString name  = col.nextValue();
+	Oid schema_oid = col.nextValue();
+
+	PgClass v(m_catalog, class_oid, name, schema_oid);
+	Oid owner ;
+	col >> v.type >> v.oftype
+		>> owner >> v.am >> v.filenode >> v.tablespace >> v.pages_est
+		>> v.tuples_est >> v.toastrelid >> v.isshared >> v.persistence
+		>> v.kind >> v.hasoids >> v.ispopulated >> v.frozenxid >> v.minmxid
+		>> v.acl >> v.options;
+	v.setOwnerOid(m_catalog, owner);
+//	auto&& ns = m_catalog.namespaces()->getByKey(v.relnamespace);
+//	if (ns) {
+//		v.relnamespace_name = ns->objectName();
+//		v.system_namespace = ns->isSystemCatalog();
+//	}
+	return v;
+}