File "BasicDBExampleUsingConnectionClass.jsp"
Full Path: /home/analogde/www/FusionChartsFree/Code/JSP/DBExample/BasicDBExampleUsingConnectionClass.jsp
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MIME-type: text/html
Charset: utf-8
<% /*
Instead of including DBConn.jsp, we will use the DBConnection class present in the applciation context
as a Bean and use its method to get the Database connection.
The DSN used for this database is jdbc/FactoryDB. This is looked-up in the connection class.
The database configuration is present in META-INF/context.xml.
The neccessary imports from java.sql package also needs to be made.
*/
%>
<jsp:useBean id="dbConn" class="com.fusioncharts.database.DBConnection" scope="application" />
<%@ page import="java.sql.Connection"%>
<%@ page import="java.sql.Statement"%>
<%@ page import="java.sql.ResultSet"%>
<%@ page import="java.sql.Date"%>
<HTML>
<HEAD>
<TITLE>FusionCharts Free - Database And Connection Class Example</TITLE>
<%
/*You need to include the following JS file, if you intend to embed the chart using JavaScript.
Embedding using JavaScripts avoids the "Click to Activate..." issue in Internet Explorer
When you make your own charts, make sure that the path to this JS file is correct. Else, you would get JavaScript errors.
*/
%>
<SCRIPT LANGUAGE="Javascript" SRC="../../FusionCharts/FusionCharts.js"></SCRIPT>
<style type="text/css">
<!--
body {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
}
.text{
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
}
-->
</style>
</HEAD>
<BODY>
<CENTER>
<h2><a href="http://www.fusioncharts.com" target="_blank">FusionCharts Free</a> Database and Connection Class Example</h2>
<%
/*
In this example, we show how to connect FusionCharts to a database.
For the sake of ease, we've used a database contains two tables, which are linked to each
other.
*/
//Database Objects - Initialization
Statement st1=null,st2=null;
ResultSet rs1=null,rs2=null;
// We have to declare & initialise the Connection object also
Connection oConn=null;
String strQuery="select * from Factory_Master";
//strXML will be used to store the entire XML document generated
String strXML="";
//Generate the chart element
strXML = "<graph caption='Factory Output report' subCaption='By Quantity' decimalPrecision='0' showNames='1' numberSuffix=' Units' pieSliceDepth='30' formatNumberScale='0'>";
try {
oConn = dbConn.getConnection();
st1=oConn.createStatement();
rs1=st1.executeQuery(strQuery);
String factoryId=null;
String factoryName=null;
String totalOutput="";
//Iterate through each factory
while(rs1.next()) {
factoryId=rs1.getString("FactoryId");
factoryName=rs1.getString("FactoryName");
//Now create second recordset to get details for this factory
//Construct the query to retrieve data
/*
Note that if the query varies from one database to the other,
then check for the database and write query for that database.
*/
strQuery = "select sum(Quantity) as TotOutput from Factory_Output where FactoryId=" + factoryId;
st2=oConn.createStatement();
rs2 = st2.executeQuery(strQuery);
if(rs2.next()){
totalOutput=rs2.getString("TotOutput");
}
//Generate <set name='..' value='..'/>
strXML += "<set name='" + factoryName + "' value='" +totalOutput+ "'/>";
//Close resultset
try {
if(null!=rs2){
rs2.close();
rs2=null;
}
}catch(java.sql.SQLException e){
//do something
System.out.println("Could not close the resultset");
}
try{
if(null!=st2) {
st2.close();
st2=null;
}
}catch(java.sql.SQLException e){
//do something
System.out.println("Could not close the statement");
}
} //end of while
}catch(java.sql.SQLException e) {
System.out.println("Exception occurred"+e.toString());
}
//Finally, close <graph> element
strXML += "</graph>";
//close the resulset,statement,connection
try {
if(null!=rs1){
rs1.close();
rs1=null;
}
}catch(java.sql.SQLException e){
//do something
System.out.println("Could not close the resultset");
}
try {
if(null!=st1) {
st1.close();
st1=null;
}
}catch(java.sql.SQLException e){
//do something
System.out.println("Could not close the statement");
}
try {
if(null!=oConn) {
oConn.close();
oConn=null;
}
}catch(java.sql.SQLException e){
//do something
System.out.println("Could not close the connection");
}
//Create the chart - Pie 3D Chart with data from strXML
%>
<jsp:include page="../Includes/FusionChartsRenderer.jsp" flush="true">
<jsp:param name="chartSWF" value="../../FusionCharts/FCF_Pie3D.swf" />
<jsp:param name="strURL" value="" />
<jsp:param name="strXML" value="<%=strXML %>" />
<jsp:param name="chartId" value="FactorySum" />
<jsp:param name="chartWidth" value="650" />
<jsp:param name="chartHeight" value="450" />
<jsp:param name="debugMode" value="false" />
<jsp:param name="registerWithJS" value="false" />
</jsp:include>
<BR>
<BR>
<a href='../NoChart.html' target="_blank">Unable to see the chart above?</a><BR><H5 ><a href='../default.htm'>« Back to list of examples</a></h5>
</CENTER>
</BODY>
</HTML>