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L7/LLightPQResultSet.h

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+/* 
+ * File:   LLightPQResultSet.h
+ * Author: SET - nmset@netcourrier.com
+ * License : LGPL version 2.1
+ * Copyright SET, M. D. - © 2014
+ *
+ * Created on 29 mai 2014, 13:28
+ */
+
+#ifdef USE_LIBPQ
+#ifndef LLIGHTPQRESULTSET_H
+#define	LLIGHTPQRESULTSET_H
+
+#include <wx/wx.h>
+#include <libpq-fe.h>
+#include "LLightResultSet.h"
+/**
+ * PostgreSQL namespace.
+ * 
+ * Please note USE_LIBPQ pre-processor directive must be defined to include the PostgreSQL backend.
+ */
+namespace PQ
+{
+    /**
+     * Scrollable minimal resultset for the PostgreSQL backend.
+     * 
+     * This class does not allow data modification and does not output any messages.
+     * The underlying SQL query may contain table and/or column aliases.
+     */
+    class LLightPQResultSet : public LLightResultSet
+    {
+    public:
+        LLightPQResultSet();
+        LLightPQResultSet(LConnection * newConnection);
+        virtual ~LLightPQResultSet();
+        /**
+         * Updates and runs the SQL string.
+         * @param newSql
+         * @return 
+         */
+        bool SetSQL(const wxString& newSql);
+        bool HasData() const;
+        bool Absolute(const unsigned int newRowIndex);
+        bool IsFirst() const;
+        bool IsLast() const;
+        bool First();
+        bool Next();
+        bool Previous();
+        bool Last();
+        const unsigned int GetRowCount() const;
+        const unsigned int GetColumnCount() const;
+        const wxString GetColumnName(const unsigned int colIndex) const;
+        const int GetColumnIndex(const wxString& colName) const;
+        const wxAny GetData(const int unsigned rowIdx, const unsigned int colIdx) const;
+        /**
+         * At current row.
+         * @param colName
+         * @return database table value or wxEmptyString.
+         */
+        const wxAny GetData(const wxString& colName) const;
+
+
+    private:
+        bool RunSQL();
+    };
+
+}
+#endif	/* LLIGHTPQRESULTSET_H */
+#endif