/// <summary>
/// Delete prefix and associated namespace with it.
/// </summary>
/// <param name="prefixStr">Prefix</param>
/// <param name="fullStr">Namespace</param>
/// <returns>Returns 'True' if operation completed succeful, 'False' otherwise.</returns>
public bool DeletePrefix(string prefixStr, string fullStr)
{
var val = TriplePrefixes.FirstOrDefault(x => x.Prefix == prefixStr && x.Namespace == fullStr);
if (val != null)
{
TriplePrefixes.Remove(val);
SaveChanges();
return(true);
}
return(false);
}
public TripleName TryEnsureNamespace(TripleName name)
{
if (name.Namespace == null)
{
if (TripleName.PrefixesAndNamespaces.ContainsKey(name.Prefix))
{
return(new TripleName(TripleName.PrefixesAndNamespaces[name.Prefix], name.Prefix, name.Name));
}
var tr = TriplePrefixes.FirstOrDefault(x => x.Prefix == name.Prefix);
return(tr != null ? new TripleName(tr.Namespace, name.Prefix, name.Name) : name);
}
else
{
return(name);
}
}
/// <summary>
/// Add new prefix and associated namespace with it.
/// </summary>
/// <param name="prefixStr">Prefix</param>
/// <param name="fullStr">Namespace</param>
/// <returns>Returns 'True' if operation completed succeful, 'False' otherwise.</returns>
public bool SetPrefix(string prefixStr, string fullStr)
{
var val = TriplePrefixes.FirstOrDefault(x => x.Prefix == prefixStr || x.Namespace == fullStr);
if (val == null)
{
var t = new TriplePrefix
{
Namespace = fullStr,
Prefix = prefixStr
};
TriplePrefixes.Add(t);
SaveChanges();
return(true);
}
return(false);
}
/// <summary>Ensures that triple name has prefix. If triple name has namespace, it is converted to prefix</summary>
/// <param name="name">Name of the triple</param>
/// <returns>Name of the triple with prefix available</returns>
public TripleName EnsurePrefix(TripleName name)
{
if (name.Prefix == null)
{
var found = TripleName.PrefixesAndNamespaces.FirstOrDefault(p => p.Value == name.Namespace);
if (found.Key != null)
{
return(new TripleName(name.Namespace, found.Key, name.Name));
}
var tr = TriplePrefixes.FirstOrDefault(t => t.Namespace == name.Namespace);
if (tr != null)
{
return(new TripleName(name.Namespace, tr.Prefix, name.Name));
}
else
{
throw new ArgumentException(String.Format("There is no known prefix for namespace {0}", name.Namespace));
}
}
else
{
return(name);
}
}
