/// <summary>
/// assigns the content's descriptions to the thing
/// assign = set content.Description to the leaf with CommonSchema.DescriptionMarker
/// set content.Source to the leaf with CommonSchema.SourceMarker
/// if the leaf doesn't exist, it will be created
/// </summary>
/// <param name="thing"></param>
/// <param name="content"></param>
/// <param name="thingGraph"></param>
public virtual void AssignContentDescription(IThing thing, Content <Stream> content, IThingGraph thingGraph)
{
var streamThing = thing as IStreamThing;
if (streamThing == null)
{
return;
}
var schema = new CommonSchema(thingGraph, streamThing);
if (content.Description != null)
{
if (schema.Description != null)
{
schema.Description.Data = content.Description;
}
else
{
schema.Description = Factory.CreateItem(content.Description);;
}
}
if (content.Source != null)
{
var sourceThing = schema.GetTheLeaf(CommonSchema.SourceMarker);
if (sourceThing == null)
{
sourceThing = Factory.CreateItem(content.Source);
schema.SetTheLeaf(CommonSchema.SourceMarker, sourceThing);
}
else
{
sourceThing.Data = content.Source;
}
}
}
public static void SetSource(this IThingGraph source, IThing thing, object name)
{
if (source != null)
{
var schema = new CommonSchema(source, thing);
var desc = schema.GetTheLeaf(CommonSchema.SourceMarker);
if (desc != null)
{
if (desc != thing)
{
source.DoChangeData(desc, name);
}
}
else
{
var factory = Registry.Pooled <IThingFactory>();
schema.SetTheLeaf(CommonSchema.SourceMarker, factory.CreateItem(source, name));
}
}
}