Basic support for update in Crud implementation, error reporting and transfering data to modified set is still missing.

pglablib/QueryGenerator.h

@@ -0,0 +1,60 @@
+#ifndef QUERYGENERATOR_H
+#define QUERYGENERATOR_H
+
+#include <QString>
+#include <memory>
+
+class PgDatabaseCatalog;
+class PgClass;
+
+namespace Querygen {
+
+
+class QueryGeneratorFactory;
+using QueryGeneratorFactoryPtr = std::shared_ptr<QueryGeneratorFactory>;
+
+class Update;
+using UpdatePtr = std::shared_ptr<Update>;
+
+class ColumnRef;
+using ColumnRefPtr = std::shared_ptr<ColumnRef>;
+
+class FQTableName {
+public:
+	QString nsName;
+	QString tableName;
+};
+
+
+class ColumnRef {
+public:
+	virtual QString getFCQS() const = 0;
+};
+
+ class Update {
+public:
+	Update(QString ns, QString tbl, QString alias)
+		: table{ns, tbl}
+	{}
+
+private:
+	FQTableName table;
+	QString tableAlias;
+};
+
+using UpdatePtr = std::shared_ptr<Update>;
+
+
+class QueryGeneratorFactory {
+public:
+	QueryGeneratorFactory(std::shared_ptr<PgDatabaseCatalog> catalog);
+
+	UpdatePtr update(QString ns, QString table_name, QString alias = QString());
+	UpdatePtr update(const PgClass &table_class, QString alias = QString());
+private:
+	std::shared_ptr<PgDatabaseCatalog> m_catalog;
+};
+
+} // end namespace Querygen
+
+#endif // QUERYGENERATOR_H