private StreamDirectory createFromNode(PipelineContext ctx, XmlElement providerNode, XmlElement parentNode, bool mustExcept)
{
String type = providerNode.ReadStr("@type", null);
if (type != null && providerNode.LocalName == "provider") //Node could be a datasource, where type describes the type of the datasource
{
return(ImportEngine.CreateObject <StreamDirectory>(type, ctx, providerNode, parentNode));
}
if (providerNode.GetAttributeNode("file") != null || providerNode.GetAttributeNode("root") != null)
{
return(new FileStreamDirectory(ctx, providerNode, parentNode));
}
if (providerNode.GetAttributeNode("url") != null)
{
return(new WebStreamDirectory(ctx, providerNode, parentNode));
}
if (providerNode.GetAttributeNode("cmd") != null)
{
return(new ShellStreamDirectory(ctx, providerNode, parentNode));
}
if (mustExcept)
{
XmlUtils.ThrowMissingException(providerNode, "@type, @file, @root or @url");
}
return(null);
}
