public void InsertImorTag(ImorTag tag)
{
var node = graph.CreateUriNode(new Uri(tag.Uri));
var typeNode = graph.GetUriNode(new Uri(ImorEnum.RdfType));
var tagNode = graph.GetUriNode(new Uri(ImorEnum.Tag));
var t = new Triple(node, typeNode, tagNode);
if (!string.IsNullOrEmpty(tag.Description))
{
var descriptionNode = graph.GetUriNode(new Uri(ImorEnum.Description));
var descriptionTriple = new Triple(node, descriptionNode, graph.CreateLiteralNode(tag.Description));
graph.Assert(descriptionTriple);
}
if (!string.IsNullOrEmpty(tag.Label))
{
var label = graph.GetUriNode(new Uri(ImorEnum.TagLabel));
var contenTriple = new Triple(node, label, graph.CreateLiteralNode(tag.Label));
graph.Assert(contenTriple);
}
graph.Assert(t);
graph.SaveToFile(DatabaseInitializer.ontology);
}
public void Post([FromBody] CreateImageCommand request)
{
var repository = new ImagesRepository();
var tagRepository = new TagsRepository();
var tags = new List <ImorTag>();
foreach (var tagLabel in request.Tags)
{
var existingTag = tagRepository.GetTagByUri(tagLabel);
if (existingTag != null)
{
tags.Add(existingTag);
}
else
{
var tag = new ImorTag()
{
Uri = ImorEnum.GetUri(tagLabel),
Label = tagLabel,
Description = "This is a label for " + tagLabel
};
tagRepository.InsertImorTag(tag);
tags.Add(tag);
}
}
repository.InsertImage(new ImorImage
{
Uri = request.Uri,
Description = request.Description,
Content = request.Content,
Tags = tags
});
}
private ImorTag MapImorTag(string uri, IEnumerable <Triple> tagProperties)
{
var tag = new ImorTag()
{
Uri = uri
};
foreach (var property in tagProperties)
{
if (property.Predicate.ToString() == ImorEnum.TagLabel)
{
tag.Label = property.Object.AsValuedNode().AsString();
}
if (property.Predicate.ToString() == ImorEnum.Description)
{
tag.Description = property.Object.AsValuedNode().AsString();
}
}
return(tag);
}
public IEnumerable <ImorTag> GetTagsForImage(string imageUri)
{
var tags = new List <ImorTag>();
var imageNode = graph.GetUriNode(new Uri(imageUri));
var hasA = graph.GetUriNode(new Uri(ImorEnum.HasA));
var triplesForNode = graph.GetTriplesWithSubjectPredicate(imageNode, hasA);
foreach (var triple in triplesForNode)
{
var tag = new ImorTag
{
Uri = triple.Object.ToString()
};
var tagProperties = graph.GetTriplesWithSubject(triple.Object);
foreach (var property in tagProperties)
{
if (property.Predicate.ToString() == ImorEnum.TagLabel)
{
tag.Label = property.Object.AsValuedNode().AsString();
}
if (property.Predicate.ToString() == ImorEnum.Description)
{
tag.Description = property.Object.AsValuedNode().AsString();
}
}
tags.Add(tag);
}
return(tags);
}