Improved support from removing rows in crud tabs.

It can handle now complex selections and reports back errors encountered
when removing the rows fails.

pgsql/Pgsql_PgException.cpp

@@ -1 +1,54 @@
-#include "Pgsql_PgException.h"
+#include "Pgsql_PgException.h"
+
+namespace Pgsql {
+
+	ResultCode::ResultCode(std::string result_code)
+		: m_resultCode(std::move(result_code))
+	{
+		assert(m_resultCode.length() == 5);
+	}
+
+	std::string ResultCode::getClass() const
+	{
+		return m_resultCode.substr(1,2);
+	}
+
+	/** Helper to easily check the class of the error
+	 *
+	 */
+	bool ResultCode::isClass(const std::string_view cls)
+	{
+		return m_resultCode.compare(1, 2, cls);
+	}
+
+	const std::string& ResultCode::getSpecific() const
+	{
+		return m_resultCode;
+	}
+
+
+	PgException::PgException(const char *msg)
+		: std::runtime_error(msg)
+	{}
+
+	PgException::PgException(std::string msg)
+		: std::runtime_error(msg)
+	{}
+
+
+	PgResultError::PgResultError(const Pgsql::ErrorDetails &details)
+		: PgException(details.errorMessage)
+		, m_details(details)
+	{}
+
+	ResultCode PgResultError::getResultCode() const
+	{
+		return ResultCode(m_details.state);
+	}
+
+	const Pgsql::ErrorDetails& PgResultError::details() const
+	{
+		return m_details;
+	}
+
+}