Reorganize files in pglablib

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

pglablib/catalog/PgInherits.h

@@ -0,0 +1,25 @@
+#ifndef PGINHERITS_H
+#define PGINHERITS_H
+
+#include "Pgsql_declare.h"
+#include <QString>
+#include <vector>
+#include <tuple>
+
+class PgInherits {
+public:
+	using Key = std::tuple<Oid, int32_t>;
+
+
+	Oid relid = InvalidOid; // oid
+	Oid parent = InvalidOid; // oid
+	int32_t seqno = 0; // integer
+
+	PgInherits();
+
+	bool operator==(Key _k) const { return relid == std::get<0>(_k) && seqno == std::get<1>(_k); }
+	bool operator<(Key _k) const { return relid < std::get<0>(_k) || (relid == std::get<0>(_k) && seqno < std::get<1>(_k)); }
+	bool operator<(const PgInherits &rhs) const { return relid < rhs.relid || (relid == rhs.relid && seqno < rhs.seqno); }
+};
+
+#endif // PGINHERITS_H