global class CurrencyConversion 
{
global class CurrencyInfo {
    WebService Double conversionRate;
    WebService String currencyIsoCode;
    WebService Boolean isActive;

}
    WebService static CurrencyInfo getCurrencyInfo(String curCode) {
    CurrencyInfo currInfo = new CurrencyInfo ();
    
    CurrencyType[] currencySql = [Select ConversionRate,ISOCODE,IsActive from CurrencyType where IsActive = True and ISOCODE =:curCode];
    
    currInfo.conversionRate = currencySql[0].ConversionRate;
    currInfo.currencyIsoCode = currencySql[0].ISOCODE;
    currInfo.isActive = currencySql[0].IsActive;
    return currInfo;

    }   
}

    /**
     * Method to set the seassion headers
     */
 private void setSessionHeaders(LoginResult lr)
    {
        SessionHeaderDocument shDoc = SessionHeaderDocument.Factory.newInstance();
        shDoc.addNewSessionHeader().setSessionId(lr.getSessionId());
        org.w3c.dom.Document domDoc = (org.w3c.dom.Document)shDoc.newDomNode();
        shElem = (org.w3c.dom.Element)domDoc.getFirstChild();
        RefreshHeaders();
        return;
    }   

    private void ConnectToSalesForce() throws Exception
    {
        
            try
            {
                sfdcCtrl.setEndPoint(wsdlUrl.getEndPointURL("SFDC"));
                //attempt to login using the user provided username and password
                this.parseLoginFile();

                LoginResult loginResult = sfdcCtrl.login(this.SFDCUserId, this.SFDCPwd);
            
                //set the session header with the authentication token provided by loginResult
                setSessionHeaders(loginResult);            
                
                //reset the end point to the usl specified in the loginResult
                sfdcCtrl.setEndPoint(new URL(loginResult.getServerUrl()));
            } catch (MalformedURLException e) {
                    throw new Exception("Couldnot login to SFDC.");            
            }         
    }

    public void perform() throws Exception
    {
        SvcControl.setEndPoint(wsdlUrl.getEndPointURL("Service"));
        this.ConnectToSalesForce();
    }
        

private double getExchangeRate(String currencyType)
    {

        return currencyConversionCtrl.getCurrencyInfo(currencyType).getConversionRate();      
    }