Add PQ basics

4 files changed, 72 insertions, 0 deletions

diff --git a/lib/output/pq/pqConn.cpp b/lib/output/pq/pqConn.cpp
new file mode 100644
index 0000000..78cdc06
--- /dev/null
+++ b/lib/output/pq/pqConn.cpp
@@ -0,0 +1,27 @@
+#include "pqConn.h"
+#include <helpers.h>
+#include <stdexcept>
+
+namespace MyGrate::Output::Pq {
+	PqConn::PqConn(const char * const str) : conn {PQconnectdb(str)}
+	{
+		verify<std::runtime_error>(PQstatus(conn) == CONNECTION_OK, "Connection failure");
+		PQsetNoticeProcessor(conn, notice_processor, this);
+	}
+
+	PqConn::~PqConn()
+	{
+		PQfinish(conn);
+	}
+
+	void
+	PqConn::notice_processor(void * p, const char * n)
+	{
+		return static_cast<PqConn *>(p)->notice_processor(n);
+	}
+
+	void
+	PqConn::notice_processor(const char *) const
+	{
+	}
+}
diff --git a/lib/output/pq/pqConn.h b/lib/output/pq/pqConn.h
new file mode 100644
index 0000000..bcf30b6
--- /dev/null
+++ b/lib/output/pq/pqConn.h
@@ -0,0 +1,20 @@
+#ifndef MYGRATE_OUTPUT_PQ_PQCONN_H
+#define MYGRATE_OUTPUT_PQ_PQCONN_H
+
+#include <libpq-fe.h>
+
+namespace MyGrate::Output::Pq {
+	class PqConn {
+	public:
+		explicit PqConn(const char * const str);
+		virtual ~PqConn();
+
+	private:
+		static void notice_processor(void *, const char *);
+		virtual void notice_processor(const char *) const;
+
+		PGconn * const conn;
+	};
+}
+
+#endif
diff --git a/lib/output/pq/updateDatabase.cpp b/lib/output/pq/updateDatabase.cpp
new file mode 100644
index 0000000..77a9ce5
--- /dev/null
+++ b/lib/output/pq/updateDatabase.cpp
@@ -0,0 +1,8 @@
+#include "updateDatabase.h"
+#include "pqConn.h"
+#include <string>
+#include <utility>
+
+namespace MyGrate::Output::Pq {
+	UpdateDatabase::UpdateDatabase(const char * const str, std::string p) : PqConn {str}, prefix {std::move(p)} { }
+}
diff --git a/lib/output/pq/updateDatabase.h b/lib/output/pq/updateDatabase.h
new file mode 100644
index 0000000..bc54282
--- /dev/null
+++ b/lib/output/pq/updateDatabase.h
@@ -0,0 +1,17 @@
+#ifndef MYGRATE_OUTPUT_PQ_UPDATEDATABASE_H
+#define MYGRATE_OUTPUT_PQ_UPDATEDATABASE_H
+
+#include "pqConn.h"
+#include <string>
+
+namespace MyGrate::Output::Pq {
+	class UpdateDatabase : PqConn {
+	public:
+		UpdateDatabase(const char * const str, std::string prefix);
+
+	private:
+		std::string prefix;
+	};
+}
+
+#endif