Added Params class for passing query parameters seperatly from the query string.

PgsqlConn.cpp

@@ -47,6 +47,77 @@ ErrorDetails ErrorDetails::createErrorDetailsFromPGresult(const PGresult *result
 }
 
 
+Params::Params()
+{}
+
+Params::Params(const Params& rhs)
+	: m_paramTypes(rhs.m_paramTypes)
+	, m_paramLengths(rhs.m_paramLengths)
+	, m_paramFormats(rhs.m_paramFormats)
+{
+	//std::vector<const char *> m_paramValues;
+	copyValues(rhs.m_paramValues);
+}
+
+Params& Params::operator=(const Params& rhs)
+{
+	if (&rhs != this) {
+		m_paramTypes = rhs.m_paramTypes;
+		m_paramLengths = rhs.m_paramLengths;
+		m_paramFormats = rhs.m_paramFormats;
+		copyValues(rhs.m_paramValues);
+	}
+	return *this;
+}
+
+Params::Params(const Params&& rhs)
+	: m_paramTypes(std::move(rhs.m_paramTypes))
+	, m_paramValues(std::move(rhs.m_paramValues))
+	, m_paramLengths(std::move(rhs.m_paramLengths))
+	, m_paramFormats(std::move(rhs.m_paramFormats))
+{}
+
+Params::~Params()
+{
+	deleteValues();
+}
+
+void Params::addText(const char *data, Oid oid)
+{
+	m_paramTypes.push_back(oid);
+	m_paramValues.push_back(data);
+	m_paramLengths.push_back(data ? strlen(data) + 1 : 0);
+	m_paramFormats.push_back(0);
+}
+
+void Params::add(const QString &s, Oid oid)
+{
+	auto ba = s.toUtf8();
+	const int len = ba.size();
+	char * p = new char[len];
+	std::memcpy(p, ba.data(), len);
+	addText(p, oid_varchar);
+}
+
+void Params::addBinary(const char *data, int length, Oid oid)
+{
+	m_paramTypes.push_back(oid);
+	m_paramValues.push_back(data);
+	m_paramLengths.push_back(length);
+	m_paramFormats.push_back(1);
+}
+
+void Params::clear()
+{
+	m_paramTypes.clear();
+	deleteValues();
+	m_paramValues.clear();
+	m_paramLengths.clear();
+	m_paramFormats.clear();
+}
+
+
+
 bool Row::next()
 {
 	if (m_row < m_result.getRows()) {
@@ -56,6 +127,19 @@ bool Row::next()
 	return false;
 }
 
+
+void Params::copyValues(const t_paramValues &r)
+{
+	const int n = m_paramTypes.size();
+	m_paramValues.reserve(n);
+	for (int i = 0; i < n; ++i) {
+		const int len = m_paramLengths[i];
+		char * p = new char[len];
+		std::memcpy(p, r[i], len);
+		m_paramValues.push_back(p);
+	}
+}
+
 Value Row::get(int col) const
 {
 	return m_result.get(col, m_row);
@@ -289,6 +373,17 @@ bool Connection::connect(const char *params)
     return result;
 }
 
+bool Connection::connect(const char *const * keywords, const char* const * values, int expand_dbname)
+{
+	bool result = false;
+	conn = PQconnectdbParams(keywords, values, expand_dbname);
+	if (conn) {
+		ConnStatusType status = PQstatus(conn);
+		result = (status == CONNECTION_OK);
+	}
+	return result;
+}
+
 bool Connection::connectStart(const char* params)
 {
 	conn = PQconnectStart(params);