public override string serialize(object obj)
{
Poi p = (Poi)obj;
StringBuilder builder = new StringBuilder();
// opening tag
builder.Append("<");
builder.Append(getXmlNodeName());
builder.Append(">");
// lang
builder.Append("<lang>");
builder.Append(p.getLang());
builder.Append("</lang>");
// name
builder.Append("<name>");
builder.Append(p.getName());
builder.Append("</name>");
// latitude
builder.Append("<latitude>");
builder.Append(p.getLatitude());
builder.Append("</latitude>");
// longitude
builder.Append("<longitude>");
builder.Append(p.getLongitude());
builder.Append("</longitude>");
// type
builder.Append("<type>");
builder.Append(p.getType());
builder.Append("</type>");
// description
builder.Append("<descr><![CDATA[");
builder.Append(p.getDescr());
builder.Append("]]></descr>");
// media files
MediaFilesXmlAdapter mfxa = new MediaFilesXmlAdapter(p.getMediaFiles());
string mediaFilesXml = mfxa.serialize();
builder.Append(mediaFilesXml);
// main details
MainDetailsXmlAdapter mdxa = new MainDetailsXmlAdapter(p.getMainDetails());
string mainDetailsXml = mdxa.serialize();
builder.Append(mainDetailsXml);
// closing tag
builder.Append("</");
builder.Append(getXmlNodeName());
builder.Append(">");
return(builder.ToString());
}