Moved several files from pglab project to pglablib

pglablib/PgConstraintContainer.cpp

@@ -0,0 +1,65 @@
+#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_catalogue.lock();
+//	if (cat && cat->serverVersion() >= 90400)
+//		q += ", indisreplident ";
+//	q += "\nFROM pg_index";
+	return q;
+}
+
+//void operator<<(std::vector<int16_t> &s, const Pgsql::Value &v)
+//{
+
+//}
+
+//void operator<<(std::vector<Oid> &s, const Pgsql::Value &v)
+//{
+
+//}
+
+
+
+
+PgConstraint PgConstraintContainer::loadElem(const Pgsql::Row &row)
+{
+	Pgsql::Col col(row);
+	PgConstraint v;
+	col >> v.oid >> v.name >> v.connamespace >> 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;
+	col.getAsArray<int16_t>(std::back_inserter(v.key));
+	col.getAsArray<int16_t>(std::back_inserter(v.fkey));
+	col.getAsArray<Oid>(std::back_inserter(v.pfeqop));
+	col.getAsArray<Oid>(std::back_inserter(v.ppeqop));
+	col.getAsArray<Oid>(std::back_inserter(v.ffeqop));
+	col.getAsArray<Oid>(std::back_inserter(v.exclop));
+	col >> v.bin >> v.src >> v.definition;
+	return v;
+}
+
+const PgConstraint* PgConstraintContainer::getFKeyForTableColumn(Oid relid, int16_t attnum) const
+{
+	const PgConstraint *result = nullptr;
+	// WHat do we want to find here? On ly single column constraints or all contstraints.
+//	auto res = std::find_if(m_container.begin(), m_container.end(),
+//		[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 relid == c.relid &&
+//					(std::find(attnum.begin(), attnum.end(), v.key) != attnum.end());
+//		});
+	return result;
+}