XSLT: Useful Method implementations for XML Transformation

XSL stands for EXtensible Stylesheet Language, and is a style sheet language for XML documents. XSLT stands for XSL Transformations.

XSLT is used for the transformation of XML documents into other XML documents. In details the original xml document will not be changed; rather, a new XML document will be created according to specified schema document (XSLT Document) based on the data content of an existing Original Xml doc.

Following sample codes are very useful for you to write Common XML Transformation Component.

The following method used to create an Xml Document by Serializing the given Object in to a memory stream. The passed Object should be a XML [Serializable] class.

/// -summary
/// Used to serialize given object to a XML Document that is used for XML Transformation
/// -summary
/// "templateDto"- Serializable Object
/// "mailType"- Enum used to identify particular mail category
/// returns-Transformed HTML message
public static string GenerateMailContent(Object templateDto,MailType mailType)
{
if (templateDto == null)
{
throw new CbsException(BaseErrorCode.ArgumentIsNull);
}
XmlDocument mailContent = new XmlDocument();
//Initialize Memery stream by loading Memory stream size from Config file.
MemoryStream memoryStream =
new MemoryStream(int.Parse(CbsConfigurationManager.GetConfigurationSection
(CbsConfigurationConstants.CbsConfigurationSection, CbsConstant.MemoryStreamSize),
CbsCultureManager.NumberFormat));
XmlSerializer xmlSerializer = new XmlSerializer(templateDto.GetType());
// Serialize object to a memory stream.
xmlSerializer.Serialize(memoryStream, templateDto);
// Set seeker at begining of stream
memoryStream.Seek(0, 0);
// Load memory stream to xml document
mailContent.Load(memoryStream);

// Transform mailContent XML to a specified format.
return TransformData(mailType, mailContent);
}


The following method is used to transform given XML document according to specified XSLT document and return the newly generated document.

/// -summary
/// Used to create the XML content of the Email using XSLT template.
/// -summary
/// param name="mailType"- Email Category
/// param name="xmlContent"-XML document content.
/// returns- XML content
public static string TransformData(MailType mailType, XmlDocument xmlContent)
{
// Load XSL transformation
XslCompiledTransform xform = new XslCompiledTransform();

// Load Absolute path for the XSLT Mail Template folder.
string mailTemplatePath =
CbsConfigurationManager.GetConfigurationSection
(CbsConfigurationConstants.CbsConfigurationSection, CbsConstant.EmailTemplatesPath);

// Switch for different XSLT mail template documents.
switch (mailType)
{
case MailType.RarSwitch:
xform.Load(mailTemplatePath + PollerSwitchXslt);
break;

case MailType.DeliveryUnsucesfull:
xform.Load(mailTemplatePath + DeliveryUnsucesfullStoresXslt);
break;
case MailType.HpSwitch:
xform.Load(mailTemplatePath + RiDMSwitchXslt);
break;
}

XmlNodeReader reader = new XmlNodeReader(xmlContent);
XmlUrlResolver resolver = new XmlUrlResolver();

// Execute and Cache results.
XmlDocument resultsDoc = new XmlDocument();
XPathNavigator resultsNav = resultsDoc.CreateNavigator();

// using makes sure that we flush the writer at the end
using (XmlWriter writer = resultsNav.AppendChild())
{
xform.Transform(reader, null, writer, resolver);
}
resultsNav.MoveToChild(XPathNodeType.Element);
return resultsNav.OuterXml;
}