Rework of catalog objects. Several of them are now inheriting from common

base classes that implement common functionality.

pglablib/PgOwnedObject.h

@@ -0,0 +1,22 @@
+#ifndef PGOWNEDOBJECT_H
+#define PGOWNEDOBJECT_H
+
+#include <QString>
+#include <libpq-fe.h>
+#include <memory>
+
+class PgDatabaseCatalog;
+class PgAuthId;
+class PgOwnedObject {
+public:
+	void setOwnerOid(PgDatabaseCatalog& cat, Oid oid);
+
+	Oid ownerOid() const;
+	QString ownerName() const;
+	const PgAuthId* owner() const;
+private:
+	Oid m_ownerOid = InvalidOid;
+	const PgAuthId * m_owner;
+};
+
+#endif // PGOWNEDOBJECT_H