/// <summary>
/// Internal method which generates the HTML Output for the Graph.
/// </summary>
/// <param name="context">Writer Context.</param>
private void GenerateOutput(HtmlWriterContext context)
{
Object results;
// Add the Namespaces we want to use later on
context.QNameMapper.AddNamespace("owl", UriFactory.Create(NamespaceMapper.OWL));
context.QNameMapper.AddNamespace("rdf", UriFactory.Create(NamespaceMapper.RDF));
context.QNameMapper.AddNamespace("rdfs", UriFactory.Create(NamespaceMapper.RDFS));
context.QNameMapper.AddNamespace("dc", UriFactory.Create("http://purl.org/dc/elements/1.1/"));
context.QNameMapper.AddNamespace("dct", UriFactory.Create("http://purl.org/dc/terms/"));
context.QNameMapper.AddNamespace("vann", UriFactory.Create("http://purl.org/vocab/vann/"));
context.QNameMapper.AddNamespace("vs", UriFactory.Create("http://www.w3.org/2003/06/sw-vocab-status/ns#"));
// Find the Node that represents the Schema Ontology
// Assumes there is exactly one thing given rdf:type owl:Ontology
IUriNode ontology = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.OWL + "Ontology"));
IUriNode rdfType = context.Graph.CreateUriNode(UriFactory.Create(RdfSpecsHelper.RdfType));
IUriNode rdfsLabel = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.RDFS + "label"));
INode ontoNode = context.Graph.GetTriplesWithPredicateObject(rdfType, ontology).Select(t => t.Subject).FirstOrDefault();
INode ontoLabel = (ontoNode != null) ? context.Graph.GetTriplesWithSubjectPredicate(ontoNode, rdfsLabel).Select(t => t.Object).FirstOrDefault() : null;
// Stuff for formatting
// We'll use the Turtle Formatter to get nice QNames wherever possible
context.NodeFormatter = new TurtleFormatter(context.QNameMapper);
context.UriFormatter = (IUriFormatter)context.NodeFormatter;
// Page Header
context.HtmlWriter.Write("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML+RDFa 1.0//EN\" \"http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd\">");
context.HtmlWriter.WriteLine();
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Html);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Head);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Title);
context.HtmlWriter.WriteEncodedText("Schema");
if (ontoNode != null && ontoLabel != null)
{
context.HtmlWriter.WriteEncodedText(" - " + ontoLabel.ToSafeString());
}
else if (context.Graph.BaseUri != null)
{
context.HtmlWriter.WriteEncodedText(" - " + context.Graph.BaseUri.AbsoluteUri);
}
context.HtmlWriter.RenderEndTag();
if (!Stylesheet.Equals(String.Empty))
{
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Href, Stylesheet);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Type, "text/css");
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Rel, "stylesheet");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Link);
context.HtmlWriter.RenderEndTag();
}
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Start Body
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Body);
// Title
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H2);
context.HtmlWriter.WriteEncodedText("Schema");
if (ontoNode != null && ontoLabel != null)
{
context.HtmlWriter.WriteEncodedText(" - " + ontoLabel.ToSafeString());
}
else if (context.Graph.BaseUri != null)
{
context.HtmlWriter.WriteEncodedText(" - " + context.Graph.BaseUri.AbsoluteUri);
}
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Show the Description of the Schema (if any)
if (ontoNode != null)
{
SparqlParameterizedString getOntoDescrip = new SparqlParameterizedString();
getOntoDescrip.Namespaces = context.QNameMapper;
getOntoDescrip.CommandText = "SELECT * WHERE { @onto a owl:Ontology . OPTIONAL { @onto rdfs:comment ?description } . OPTIONAL { @onto vann:preferredNamespacePrefix ?nsPrefix ; vann:preferredNamespaceUri ?nsUri } . OPTIONAL { @onto dc:creator ?creator . ?creator (foaf:name | rdfs:label) ?creatorName } }";
getOntoDescrip.SetParameter("onto", ontoNode);
try
{
results = context.Graph.ExecuteQuery(getOntoDescrip);
if (results is SparqlResultSet)
{
if (!((SparqlResultSet)results).IsEmpty)
{
SparqlResult ontoInfo = ((SparqlResultSet)results)[0];
// Show rdfs:comment on the Ontology
if (ontoInfo.HasValue("description"))
{
INode descrip = ontoInfo["description"];
if (descrip.NodeType == NodeType.Literal)
{
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
context.HtmlWriter.Write(((ILiteralNode)descrip).Value);
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
}
}
// Show Author Information
if (ontoInfo.HasValue("creator"))
{
INode author = ontoInfo["creator"];
INode authorName = ontoInfo["creatorName"];
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Em);
context.HtmlWriter.WriteEncodedText("Schema created by ");
if (author.NodeType == NodeType.Uri)
{
context.HtmlWriter.AddAttribute("href", ((IUriNode)author).Uri.AbsoluteUri);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassUri);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.A);
}
switch (authorName.NodeType)
{
case NodeType.Uri:
context.HtmlWriter.WriteEncodedText(((IUriNode)authorName).Uri.AbsoluteUri);
break;
case NodeType.Literal:
context.HtmlWriter.WriteEncodedText(((ILiteralNode)authorName).Value);
break;
default:
context.HtmlWriter.WriteEncodedText(authorName.ToString());
break;
}
if (author.NodeType == NodeType.Uri)
{
context.HtmlWriter.RenderEndTag();
}
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
}
// Show the Namespace information for the Schema
if (ontoInfo.HasValue("nsPrefix"))
{
if (ontoInfo["nsPrefix"].NodeType == NodeType.Literal && ontoInfo["nsUri"].NodeType == NodeType.Uri)
{
// Add this QName to the QName Mapper so we can get nice QNames later on
String prefix = ((ILiteralNode)ontoInfo["nsPrefix"]).Value;
context.QNameMapper.AddNamespace(prefix, ((IUriNode)ontoInfo["nsUri"]).Uri);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H4);
context.HtmlWriter.WriteEncodedText("Preferred Namespace Definition");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Show human readable description of preferred Namespace Settings
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
context.HtmlWriter.WriteEncodedText("Preferred Namespace Prefix is ");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Strong);
context.HtmlWriter.WriteEncodedText(prefix);
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteEncodedText(" and preferred Namespace URI is ");
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Href, context.QNameMapper.GetNamespaceUri(prefix).AbsoluteUri);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassUri);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.A);
context.HtmlWriter.WriteEncodedText(context.QNameMapper.GetNamespaceUri(prefix).AbsoluteUri);
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.RenderEndTag();
// RDF/XML Syntax
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H5);
context.HtmlWriter.WriteEncodedText("RDF/XML Syntax");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
context.HtmlWriter.AddStyleAttribute(HtmlTextWriterStyle.Width, "90%");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Pre);
int currIndent = context.HtmlWriter.Indent;
context.HtmlWriter.Indent = 0;
context.HtmlWriter.WriteEncodedText("<?xml version=\"1.0\" charset=\"utf-8\"?>");
context.HtmlWriter.WriteLine();
context.HtmlWriter.WriteEncodedText("<rdf:RDF xmlns:rdf=\"" + NamespaceMapper.RDF + "\" xmlns:" + prefix + "=\"" + context.UriFormatter.FormatUri(context.QNameMapper.GetNamespaceUri(prefix)) + "\">");
context.HtmlWriter.WriteLine();
context.HtmlWriter.WriteEncodedText(" <!-- Your RDF here... -->");
context.HtmlWriter.WriteLine();
context.HtmlWriter.WriteEncodedText("</rdf:RDF>");
context.HtmlWriter.Indent = currIndent;
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Turtle/N3 Syntax
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H5);
context.HtmlWriter.WriteEncodedText("Turtle/N3 Syntax");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
context.HtmlWriter.AddStyleAttribute(HtmlTextWriterStyle.Width, "90%");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Pre);
currIndent = context.HtmlWriter.Indent;
context.HtmlWriter.Indent = 0;
context.HtmlWriter.WriteEncodedText("@prefix " + prefix + ": <" + context.UriFormatter.FormatUri(context.QNameMapper.GetNamespaceUri(prefix)) + "> .");
context.HtmlWriter.Indent = currIndent;
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// SPARQL Syntax
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H5);
context.HtmlWriter.WriteEncodedText("SPARQL Syntax");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
context.HtmlWriter.AddStyleAttribute(HtmlTextWriterStyle.Width, "90%");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Pre);
currIndent = context.HtmlWriter.Indent;
context.HtmlWriter.Indent = 0;
context.HtmlWriter.WriteEncodedText("PREFIX " + prefix + ": <" + context.UriFormatter.FormatUri(context.QNameMapper.GetNamespaceUri(prefix)) + ">");
context.HtmlWriter.Indent = currIndent;
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
}
}
}
}
else
{
throw new RdfOutputException("Tried to make a SPARQL Query to determine Schema Information but an unexpected Query Result was returned");
}
}
catch (RdfQueryException queryEx)
{
throw new RdfOutputException("Tried to make a SPARQL Query to determine Schema Information but a Query Error occurred", queryEx);
}
}
SparqlParameterizedString getPropertyRanges = new SparqlParameterizedString();
getPropertyRanges.Namespaces = new NamespaceMapper();
getPropertyRanges.Namespaces.AddNamespace("owl", UriFactory.Create(NamespaceMapper.OWL));
getPropertyRanges.CommandText = "SELECT ?range WHERE { { @property rdfs:range ?range . FILTER(ISURI(?range)) } UNION { @property rdfs:range ?union . ?union owl:unionOf ?ranges . { ?ranges rdf:first ?range } UNION { ?ranges rdf:rest+/rdf:first ?range } } }";
SparqlParameterizedString getPropertyDomains = new SparqlParameterizedString();
getPropertyDomains.Namespaces = getPropertyRanges.Namespaces;
getPropertyDomains.CommandText = "SELECT ?domain WHERE { { @property rdfs:domain ?domain . FILTER(ISURI(?domain)) } UNION { @property rdfs:domain ?union . ?union owl:unionOf ?domains . { ?domains rdf:first ?domain } UNION { ?domains rdf:rest+/rdf:first ?domain } } }";
// Show lists of all Classes and Properties in the Schema
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H4);
context.HtmlWriter.WriteEncodedText("Class and Property Summary");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
context.HtmlWriter.WriteEncodedText("This Schema defines the following classes:");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
context.HtmlWriter.AddStyleAttribute("width", "90%");
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassBox);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
// Get the Classes and Display
SparqlParameterizedString getClasses = new SparqlParameterizedString();
getClasses.Namespaces = context.QNameMapper;
getClasses.CommandText = "SELECT DISTINCT ?class WHERE { { ?class a rdfs:Class } UNION { ?class a owl:Class } FILTER(ISURI(?class)) } ORDER BY ?class";
try
{
results = context.Graph.ExecuteQuery(getClasses);
if (results is SparqlResultSet)
{
SparqlResultSet rs = (SparqlResultSet)results;
for (int i = 0; i < rs.Count; i++)
{
SparqlResult r = rs[i];
// Get the QName and output a Link to an anchor that we'll generate later to let
// users jump to a Class/Property definition
String qname = context.NodeFormatter.Format(r["class"]);
context.HtmlWriter.AddAttribute("href", "#" + qname);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassUri);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.A);
context.HtmlWriter.WriteEncodedText(qname);
context.HtmlWriter.RenderEndTag();
if (i < rs.Count - 1)
{
context.HtmlWriter.WriteEncodedText(" , ");
}
}
}
else
{
throw new RdfOutputException("Tried to make a SPARQL Query to find Classes in the Schema but an unexpected Query Result was returned");
}
}
catch (RdfQueryException queryEx)
{
throw new RdfOutputException("Tried to make a SPARQL Query to find Classes in the Schema but a Query Error occurred", queryEx);
}
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
context.HtmlWriter.WriteEncodedText("This Schema defines the following properties:");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
context.HtmlWriter.AddStyleAttribute("width", "90%");
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassBox);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
// Get the Properties and Display
SparqlParameterizedString getProperties = new SparqlParameterizedString();
getProperties.Namespaces = context.QNameMapper;
getProperties.CommandText = "SELECT DISTINCT ?property WHERE { { ?property a rdf:Property } UNION { ?property a owl:DatatypeProperty } UNION { ?property a owl:ObjectProperty } FILTER(ISURI(?property)) } ORDER BY ?property";
try
{
results = context.Graph.ExecuteQuery(getProperties);
if (results is SparqlResultSet)
{
SparqlResultSet rs = (SparqlResultSet)results;
for (int i = 0; i < rs.Count; i++)
{
SparqlResult r = rs[i];
// Get the QName and output a Link to an anchor that we'll generate later to let
// users jump to a Class/Property definition
String qname = context.NodeFormatter.Format(r["property"]);
context.HtmlWriter.AddAttribute("href", "#" + qname);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassUri);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.A);
context.HtmlWriter.WriteEncodedText(qname);
context.HtmlWriter.RenderEndTag();
if (i < rs.Count - 1)
{
context.HtmlWriter.WriteEncodedText(" , ");
}
}
}
else
{
throw new RdfOutputException("Tried to make a SPARQL Query to find Properties in the Schema but an unexpected Query Result was returned");
}
}
catch (RdfQueryException queryEx)
{
throw new RdfOutputException("Tried to make a SPARQL Query to find Properties in the Schema but a Query Error occurred", queryEx);
}
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Show details for each class
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H3);
context.HtmlWriter.WriteEncodedText("Classes");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Now create the URI Nodes we need for the next stage of Output
IUriNode rdfsDomain = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.RDFS + "domain"));
IUriNode rdfsRange = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.RDFS + "range"));
IUriNode rdfsSubClassOf = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.RDFS + "subClassOf"));
IUriNode rdfsSubPropertyOf = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.RDFS + "subPropertyOf"));
IUriNode owlDisjointClass = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.OWL + "disjointWith"));
IUriNode owlEquivalentClass = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.OWL + "equivalentClass"));
IUriNode owlEquivalentProperty = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.OWL + "equivalentProperty"));
IUriNode owlInverseProperty = context.Graph.CreateUriNode(UriFactory.Create(NamespaceMapper.OWL + "inverseOf"));
// Alter our previous getClasses query to get additional details
getClasses.CommandText = "SELECT ?class (SAMPLE(?label) AS ?classLabel) (SAMPLE(?description) AS ?classDescription) WHERE { { ?class a rdfs:Class } UNION { ?class a owl:Class } FILTER(ISURI(?class)) OPTIONAL { ?class rdfs:label ?label } OPTIONAL { ?class rdfs:comment ?description } } GROUP BY ?class ORDER BY ?class";
try
{
results = context.Graph.ExecuteQuery(getClasses);
if (results is SparqlResultSet)
{
foreach (SparqlResult r in (SparqlResultSet)results)
{
if (!r.HasValue("class"))
{
continue;
}
String qname = context.NodeFormatter.Format(r["class"]);
// Use a <div> for each Class
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassBox);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Div);
// Add the Anchor to which earlier Class summary links to
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Name, qname);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.A);
context.HtmlWriter.RenderEndTag();
// Show Basic Class Information
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H4);
context.HtmlWriter.WriteEncodedText("Class: " + qname);
context.HtmlWriter.RenderEndTag();
// Show "Local Name - Label"
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Em);
if (TurtleSpecsHelper.IsValidQName(qname))
{
context.HtmlWriter.WriteEncodedText(qname);
}
else
{
Uri temp = new Uri(qname, UriKind.RelativeOrAbsolute);
if (!temp.Fragment.Equals(String.Empty))
{
context.HtmlWriter.WriteEncodedText(temp.Fragment);
}
else
{
context.HtmlWriter.WriteEncodedText(temp.Segments.Last());
}
}
context.HtmlWriter.RenderEndTag();
if (r.HasValue("classLabel"))
{
if (r["classLabel"] != null && r["classLabel"].NodeType == NodeType.Literal)
{
context.HtmlWriter.WriteEncodedText(" - ");
context.HtmlWriter.WriteEncodedText(((ILiteralNode)r["classLabel"]).Value);
}
}
context.HtmlWriter.WriteLine();
context.HtmlWriter.WriteBreak();
context.HtmlWriter.WriteLine();
// Output further information about the class
IEnumerable <Triple> ts;
// Output any Subclasses
ts = context.Graph.GetTriplesWithSubjectPredicate(rdfsSubClassOf, r["class"]);
GenerateCaptionedInformation(context, "Has Sub Classes", ts, t => t.Object);
// Output Properties which have this as domain/range
ts = context.Graph.GetTriplesWithPredicateObject(rdfsDomain, r["class"]);
GenerateCaptionedInformation(context, "Properties Include", ts, t => t.Subject);
ts = context.Graph.GetTriplesWithPredicateObject(rdfsRange, r["class"]);
GenerateCaptionedInformation(context, "Used With", ts, t => t.Subject);
// Output any Equivalent Classes
ts = context.Graph.GetTriplesWithSubjectPredicate(r["class"], owlEquivalentClass).Concat(context.Graph.GetTriplesWithPredicateObject(owlEquivalentClass, r["class"]));
GenerateCaptionedInformation(context, "Equivalent Classes", ts, t => t.Subject.Equals(r["class"]) ? t.Object : t.Subject);
// Output any Disjoint Classes
ts = context.Graph.GetTriplesWithSubjectPredicate(r["class"], owlDisjointClass).Concat(context.Graph.GetTriplesWithPredicateObject(owlDisjointClass, r["class"]));
GenerateCaptionedInformation(context, "Disjoint Classes", ts, t => t.Subject.Equals(r["class"]) ? t.Object : t.Subject);
// Show the Class Description
if (r.HasValue("classDescription"))
{
if (r["classDescription"] != null && r["classDescription"].NodeType == NodeType.Literal)
{
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
context.HtmlWriter.Write(((ILiteralNode)r["classDescription"]).Value);
context.HtmlWriter.RenderEndTag();
}
}
// End the </div> for the Class
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
}
}
else
{
throw new RdfOutputException("Tried to make a SPARQL Query to get Class Information from the Schema but an unexpected Query Result was returned");
}
}
catch (RdfQueryException queryEx)
{
throw new RdfOutputException("Tried to make a SPARQL Query to get Class Information from the Schema but a Query Error occurred", queryEx);
}
// Show details for each property
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H3);
context.HtmlWriter.WriteEncodedText("Properties");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Alter our previous getProperties query to get additional details
getProperties.CommandText = "SELECT ?property (SAMPLE(?label) AS ?propertyLabel) (SAMPLE(?description) AS ?propertyDescription) WHERE { { ?property a rdf:Property } UNION { ?property a owl:ObjectProperty } UNION { ?property a owl:DatatypeProperty } FILTER(ISURI(?property)) OPTIONAL { ?property rdfs:label ?label } OPTIONAL { ?property rdfs:comment ?description } } GROUP BY ?property ORDER BY ?property";
try
{
results = context.Graph.ExecuteQuery(getProperties);
if (results is SparqlResultSet)
{
foreach (SparqlResult r in (SparqlResultSet)results)
{
if (!r.HasValue("property"))
{
continue;
}
String qname = context.NodeFormatter.Format(r["property"]);
// Use a <div> for each Property
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Class, CssClassBox);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Div);
// Add the Anchor to which earlier Property summary links to
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Name, qname);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.A);
context.HtmlWriter.RenderEndTag();
// Show Basic Property Information
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H4);
context.HtmlWriter.WriteEncodedText("Property: " + qname);
context.HtmlWriter.RenderEndTag();
// Show "Local Name - Label"
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Em);
if (TurtleSpecsHelper.IsValidQName(qname))
{
context.HtmlWriter.WriteEncodedText(qname);
}
else
{
Uri temp = new Uri(qname, UriKind.RelativeOrAbsolute);
if (!temp.Fragment.Equals(String.Empty))
{
context.HtmlWriter.WriteEncodedText(temp.Fragment);
}
else
{
context.HtmlWriter.WriteEncodedText(temp.Segments.Last());
}
}
context.HtmlWriter.RenderEndTag();
if (r.HasValue("propertyLabel"))
{
if (r["propertyLabel"] != null && r["propertyLabel"].NodeType == NodeType.Literal)
{
context.HtmlWriter.WriteEncodedText(" - ");
context.HtmlWriter.WriteEncodedText(((ILiteralNode)r["propertyLabel"]).Value);
}
}
context.HtmlWriter.WriteLine();
context.HtmlWriter.WriteBreak();
context.HtmlWriter.WriteLine();
// Output further information about the property
IEnumerable <Triple> ts;
// Output any Subproperties
ts = context.Graph.GetTriplesWithSubjectPredicate(rdfsSubPropertyOf, r["property"]);
GenerateCaptionedInformation(context, "Has Sub Properties", ts, t => t.Object);
// Output Domain and Range
// ts = context.Graph.GetTriplesWithSubjectPredicate(r["property"], rdfsDomain);
// this.GenerateCaptionedInformation(context, "Has Domain", ts, t => t.Object);
// ts = context.Graph.GetTriplesWithSubjectPredicate(r["property"], rdfsRange);
// this.GenerateCaptionedInformation(context, "Has Range", ts, t => t.Object);
getPropertyDomains.SetParameter("property", r["property"]);
GenerateCaptionedInformation(context, "Has Domain", context.Graph.ExecuteQuery(getPropertyDomains) as SparqlResultSet, "domain");
getPropertyRanges.SetParameter("property", r["property"]);
GenerateCaptionedInformation(context, "Has Range", context.Graph.ExecuteQuery(getPropertyRanges) as SparqlResultSet, "range");
// Output any Equivalent Properties
ts = context.Graph.GetTriplesWithSubjectPredicate(r["property"], owlEquivalentProperty).Concat(context.Graph.GetTriplesWithPredicateObject(owlEquivalentProperty, r["property"]));
GenerateCaptionedInformation(context, "Equivalent Properties", ts, t => t.Subject.Equals(r["property"]) ? t.Object : t.Subject);
// Output any Disjoint Classes
ts = context.Graph.GetTriplesWithSubjectPredicate(r["property"], owlInverseProperty).Concat(context.Graph.GetTriplesWithPredicateObject(owlInverseProperty, r["property"]));
GenerateCaptionedInformation(context, "Inverse Property", ts, t => t.Subject.Equals(r["property"]) ? t.Object : t.Subject);
// Show the Property Description
if (r.HasValue("propertyDescription"))
{
if (r["propertyDescription"] != null && r["propertyDescription"].NodeType == NodeType.Literal)
{
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.P);
context.HtmlWriter.Write(((ILiteralNode)r["propertyDescription"]).Value);
context.HtmlWriter.RenderEndTag();
}
}
// End the </div> for the Property
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
}
}
else
{
throw new RdfOutputException("Tried to make a SPARQL Query to get Property Information from the Schema but an unexpected Query Result was returned");
}
}
catch (RdfQueryException queryEx)
{
throw new RdfOutputException("Tried to make a SPARQL Query to get Property Information from the Schema but a Query Error occurred", queryEx);
}
// End of Page
context.HtmlWriter.RenderEndTag(); //End Body
context.HtmlWriter.RenderEndTag(); //End Html
}
/// <summary>
/// Internal method which generates the HTML Output for the Graph
/// </summary>
/// <param name="context">Writer Context</param>
private void GenerateOutput(HtmlWriterContext context)
{
// Page Header
context.HtmlWriter.Write("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML+RDFa 1.0//EN\" \"http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd\">");
context.HtmlWriter.WriteLine();
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Html);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Head);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Title);
context.HtmlWriter.WriteEncodedText("RDF Graph");
if (context.Graph.BaseUri != null)
{
context.HtmlWriter.WriteEncodedText(" - " + context.Graph.BaseUri.AbsoluteUri);
}
context.HtmlWriter.RenderEndTag();
if (!Stylesheet.Equals(String.Empty))
{
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Href, Stylesheet);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Type, "text/css");
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Rel, "stylesheet");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Link);
context.HtmlWriter.RenderEndTag();
}
// TODO: Add <meta> for charset?
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Start Body
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Body);
// Title
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.H3);
context.HtmlWriter.WriteEncodedText("RDF Graph");
if (context.Graph.BaseUri != null)
{
context.HtmlWriter.WriteEncodedText(" - " + context.Graph.BaseUri.AbsoluteUri);
}
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Create a Table for the Graph
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Width, "100%");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Table);
// Create a Table Header
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Thead);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Tr);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Th);
context.HtmlWriter.WriteEncodedText("Subject");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Th);
context.HtmlWriter.WriteEncodedText("Predicate");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Th);
context.HtmlWriter.WriteEncodedText("Object");
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Create a Table Body for the Triple
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Tbody);
TripleCollection triplesDone = new TripleCollection();
foreach (INode subj in context.Graph.Triples.SubjectNodes)
{
IEnumerable <Triple> ts = context.Graph.GetTriplesWithSubject(subj);
// Start a Row
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Valign, "top");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Tr);
// Then a Column for the Subject which spans the correct number of Rows
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Rowspan, ts.Count().ToString());
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Td);
context.HtmlWriter.WriteLine();
// For each Subject add an anchor if it can be reduced to a QName
if (subj.NodeType == NodeType.Uri)
{
String qname;
if (context.QNameMapper.ReduceToQName(subj.ToString(), out qname))
{
if (!qname.EndsWith(":"))
{
qname = qname.Substring(qname.IndexOf(':') + 1);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Name, qname);
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.A);
context.HtmlWriter.RenderEndTag();
}
}
}
GenerateNodeOutput(context, subj);
context.HtmlWriter.WriteLine();
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
bool firstPred = true;
foreach (Triple t in ts)
{
if (triplesDone.Contains(t))
{
continue;
}
if (!firstPred)
{
// If not the first Triple start a new row
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Valign, "top");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Tr);
}
// Then a Column for the Predicate
IEnumerable <Triple> predTriples = context.Graph.GetTriplesWithSubjectPredicate(t.Subject, t.Predicate);
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Rowspan, predTriples.Count().ToString());
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Td);
context.HtmlWriter.WriteLine();
GenerateNodeOutput(context, t.Predicate);
context.HtmlWriter.WriteLine();
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// Then we write out all the Objects
bool firstObj = true;
foreach (Triple predTriple in predTriples)
{
if (triplesDone.Contains(predTriple))
{
continue;
}
if (!firstObj)
{
// If not the first Triple start a new row
context.HtmlWriter.AddAttribute(HtmlTextWriterAttribute.Valign, "top");
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Tr);
}
// Object Column
context.HtmlWriter.RenderBeginTag(HtmlTextWriterTag.Td);
context.HtmlWriter.WriteLine();
GenerateNodeOutput(context, predTriple.Object, predTriple);
context.HtmlWriter.WriteLine();
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
// End of Row
context.HtmlWriter.RenderEndTag();
context.HtmlWriter.WriteLine();
firstObj = false;
triplesDone.Add(predTriple);
}
firstPred = false;
}
}
// End Table Body
context.HtmlWriter.RenderEndTag();
// End Table
context.HtmlWriter.RenderEndTag();
// End of Page
context.HtmlWriter.RenderEndTag(); //End Body
context.HtmlWriter.RenderEndTag(); //End Html
}
/// <summary>
/// Internal method which generates the HTML Output for the Sparql Results.
/// </summary>
/// <param name="results"></param>
/// <param name="output"></param>
private void GenerateOutput(SparqlResultSet results, TextWriter output)
{
HtmlTextWriter writer = new HtmlTextWriter(output);
QNameOutputMapper qnameMapper = new QNameOutputMapper(_namespaces != null ? _namespaces : new NamespaceMapper(true));
// Page Header
writer.Write("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">");
writer.RenderBeginTag(HtmlTextWriterTag.Html);
writer.RenderBeginTag(HtmlTextWriterTag.Head);
writer.RenderBeginTag(HtmlTextWriterTag.Title);
writer.WriteEncodedText("SPARQL Query Results");
writer.RenderEndTag();
if (!Stylesheet.Equals(String.Empty))
{
writer.AddAttribute(HtmlTextWriterAttribute.Href, Stylesheet);
writer.AddAttribute(HtmlTextWriterAttribute.Type, "text/css");
writer.AddAttribute(HtmlTextWriterAttribute.Rel, "stylesheet");
writer.RenderBeginTag(HtmlTextWriterTag.Link);
writer.RenderEndTag();
}
// TODO: Add <meta> for charset?
writer.RenderEndTag();
// Start Body
writer.RenderBeginTag(HtmlTextWriterTag.Body);
if (results.ResultsType == SparqlResultsType.VariableBindings)
{
// Create a Table for the results
writer.AddAttribute(HtmlTextWriterAttribute.Width, "100%");
writer.RenderBeginTag(HtmlTextWriterTag.Table);
// Create a Table Header with the Variable Names
writer.RenderBeginTag(HtmlTextWriterTag.Thead);
writer.RenderBeginTag(HtmlTextWriterTag.Tr);
foreach (String var in results.Variables)
{
writer.RenderBeginTag(HtmlTextWriterTag.Th);
writer.WriteEncodedText(var);
writer.RenderEndTag();
}
writer.RenderEndTag();
writer.RenderEndTag();
writer.WriteLine();
// Create a Table Body for the Results
writer.RenderBeginTag(HtmlTextWriterTag.Tbody);
// Create a Column for each Binding
foreach (SparqlResult result in results)
{
// Start Row
writer.RenderBeginTag(HtmlTextWriterTag.Tr);
foreach (String var in results.Variables)
{
// Start Column
writer.RenderBeginTag(HtmlTextWriterTag.Td);
if (result.HasValue(var))
{
INode value = result[var];
if (value != null)
{
switch (value.NodeType)
{
case NodeType.Blank:
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassBlankNode);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
writer.WriteEncodedText(value.ToString());
writer.RenderEndTag();
break;
case NodeType.Literal:
ILiteralNode lit = (ILiteralNode)value;
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassLiteral);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
if (lit.DataType != null)
{
writer.WriteEncodedText(lit.Value);
writer.RenderEndTag();
writer.WriteEncodedText("^^");
writer.AddAttribute(HtmlTextWriterAttribute.Href, _formatter.FormatUri(lit.DataType.AbsoluteUri));
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassDatatype);
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.WriteEncodedText(lit.DataType.ToString());
writer.RenderEndTag();
}
else
{
writer.WriteEncodedText(lit.Value);
if (!lit.Language.Equals(String.Empty))
{
writer.RenderEndTag();
writer.WriteEncodedText("@");
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassLangSpec);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
writer.WriteEncodedText(lit.Language);
writer.RenderEndTag();
}
else
{
writer.RenderEndTag();
}
}
break;
case NodeType.GraphLiteral:
// Error
throw new RdfOutputException("Result Sets which contain Graph Literal Nodes cannot be serialized in the HTML Format");
case NodeType.Uri:
writer.AddAttribute(HtmlTextWriterAttribute.Class, CssClassUri);
writer.AddAttribute(HtmlTextWriterAttribute.Href, _formatter.FormatUri(UriPrefix + value.ToString()));
writer.RenderBeginTag(HtmlTextWriterTag.A);
String qname;
if (qnameMapper.ReduceToQName(value.ToString(), out qname))
{
writer.WriteEncodedText(qname);
}
else
{
writer.WriteEncodedText(value.ToString());
}
writer.RenderEndTag();
break;
default:
throw new RdfOutputException("Result Sets which contain Unknown Node Types cannot be serialized in the HTML Format");
}
}
else
{
writer.WriteEncodedText(" ");
}
}
else
{
writer.WriteEncodedText(" ");
}
// End Column
writer.RenderEndTag();
}
// End Row
writer.RenderEndTag();
writer.WriteLine();
}
// End Table Body
writer.RenderEndTag();
// End Table
writer.RenderEndTag();
}
else
{
// Show a Header and a Boolean value
writer.RenderBeginTag(HtmlTextWriterTag.H3);
writer.WriteEncodedText("ASK Query Result");
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.P);
writer.WriteEncodedText(results.Result.ToString());
writer.RenderEndTag();
}
// End of Page
writer.RenderEndTag(); //End Body
writer.RenderEndTag(); //End Html
}
