RowFormatter redesign, sample and some other minor changes

Data/samples/RowFormatter/src/RowFormatter.cpp

@@ -0,0 +1,106 @@
+//
+// RecordSet.cpp
+//
+// $Id: //poco/Main/Data/samples/RecordSet/src/RowFormatter.cpp#2 $
+//
+// This sample demonstrates the Data library recordset formatting
+// capabilities.
+//
+// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
+// All rights reserved.
+//
+// This is unpublished proprietary source code of Applied Informatics
+// Software Engineering GmbH.
+// The contents of this file may not be disclosed to third parties, 
+// copied or duplicated in any form, in whole or in part, without
+// prior written permission from Applied Informatics.
+//
+
+
+#include "Poco/SharedPtr.h"
+#include "Poco/Data/SessionFactory.h"
+#include "Poco/Data/Session.h"
+#include "Poco/Data/RecordSet.h"
+#include "Poco/Data/RowFormatter.h"
+#include "Poco/Data/SQLite/Connector.h"
+#include <iostream>
+
+
+using namespace Poco::Data;
+
+
+class HTMLTableFormatter : public RowFormatter
+{
+public:
+	HTMLTableFormatter()
+	{
+		std::ostringstream os;
+		os << "<TABLE border=\"1\" cellspacing=\"0\">" << std::endl;
+		setPrefix(os.str());
+		
+		os.str("");
+		os << "</TABLE>" << std::endl;
+		setPostfix(os.str());
+	}
+
+	std::string& formatNames(const NameVecPtr pNames, std::string& formattedNames) const
+	{
+		std::ostringstream str;
+
+		str << "\t<TR>" << std::endl;
+		NameVec::const_iterator it = pNames->begin();
+		NameVec::const_iterator end = pNames->end();
+		for (; it != end; ++it)	str << "\t\t<TH align=\"center\">" << *it << "</TH>" << std::endl;
+		str << "\t</TR>" << std::endl;
+
+		return formattedNames = str.str();
+	}
+
+	std::string& formatValues(const ValueVec& vals, std::string& formattedValues) const
+	{
+		std::ostringstream str;
+
+		str << "\t<TR>" << std::endl;
+		ValueVec::const_iterator it = vals.begin();
+		ValueVec::const_iterator end = vals.end();
+		for (; it != end; ++it)
+		{
+			if (it->isNumeric()) 
+				str << "\t\t<TD align=\"right\">";
+			else 
+				str << "\t\t<TD align=\"left\">";
+
+			str << it->convert<std::string>() << "</TD>" << std::endl;
+		}
+		str << "\t</TR>" << std::endl;
+
+		return formattedValues = str.str();
+	}
+};
+
+
+int main(int argc, char** argv)
+{
+	// register SQLite connector
+	Poco::Data::SQLite::Connector::registerConnector();
+	
+	// create a session
+	Session session("SQLite", "sample.db");
+
+	// drop sample table, if it exists
+	session << "DROP TABLE IF EXISTS Person", now;
+	
+	// (re)create table
+	session << "CREATE TABLE Person (Name VARCHAR(30), Address VARCHAR, Age INTEGER(3))", now;
+	
+	// insert some rows
+	session << "INSERT INTO Person VALUES('Homer Simpson', 'Springfield', 42)", now;
+	session << "INSERT INTO Person VALUES('Marge Simpson', 'Springfield', 38)", now;
+	session << "INSERT INTO Person VALUES('Bart Simpson', 'Springfield', 12)", now;
+	session << "INSERT INTO Person VALUES('Lisa Simpson', 'Springfield', 10)", now;
+		
+	// create a recordset and print the column names and data as HTML table
+	std::cout << RecordSet(session, "SELECT * FROM Person", new HTMLTableFormatter);
+
+	return 0;
+}