/// <summary>
/// Formats a Graph Header by creating an <strong><rdf:RDF></strong> element and adding namespace definitions.
/// </summary>
/// <param name="g">Graph.</param>
/// <returns></returns>
public string FormatGraphHeader(IGraph g)
{
_mapper = new QNameOutputMapper(g.NamespaceMap);
StringBuilder output = new StringBuilder();
output.Append(GetGraphHeaderBase());
foreach (String prefix in g.NamespaceMap.Prefixes)
{
if (!prefix.Equals("rdf"))
{
if (prefix.Equals(String.Empty))
{
output.Append(" xmlns=\"" + WriterHelper.EncodeForXml(g.NamespaceMap.GetNamespaceUri(prefix).AbsoluteUri) + "\"");
}
else
{
output.Append(" xmlns:" + prefix + "=\"" + WriterHelper.EncodeForXml(g.NamespaceMap.GetNamespaceUri(prefix).AbsoluteUri) + "\"");
}
}
}
if (g.BaseUri != null)
{
output.Append(" xml:base=\"" + WriterHelper.EncodeForXml(g.BaseUri.AbsoluteUri) + "\"");
}
output.Append(">");
return(output.ToString());
}
/// <summary>
/// Formats a Graph Header by creating an <strong><rdf:RDF></strong> element and adding namespace definitions
/// </summary>
/// <param name="g">Graph</param>
/// <returns></returns>
public string FormatGraphHeader(IGraph g)
{
this._mapper = new QNameOutputMapper(g.NamespaceMap);
StringBuilder output = new StringBuilder();
output.Append(this.GetGraphHeaderBase());
foreach (String prefix in g.NamespaceMap.Prefixes)
{
if (!prefix.Equals("rdf"))
{
if (prefix.Equals(String.Empty))
{
output.Append(" xmlns=\"" + WriterHelper.EncodeForXml(g.NamespaceMap.GetNamespaceUri(prefix).ToString()) + "\"");
}
else
{
output.Append(" xmlns:" + prefix + "=\"" + WriterHelper.EncodeForXml(g.NamespaceMap.GetNamespaceUri(prefix).ToString()) + "\"");
}
}
}
if (g.BaseUri != null)
{
output.Append(" xml:base=\"" + WriterHelper.EncodeForXml(g.BaseUri.ToString()) + "\"");
}
output.Append(">");
return output.ToString();
}
/// <summary>
/// Creates a new QName Formatter
/// </summary>
/// <param name="formatName">Format Name</param>
/// <param name="qnameMapper">QName Map</param>
public QNameFormatter(String formatName, QNameOutputMapper qnameMapper)
: base(formatName)
{
this._qnameMapper = qnameMapper;
foreach (String prefix in this._qnameMapper.Prefixes.ToList())
{
if (!this.IsValidQName(prefix + ":"))
{
this._qnameMapper.RemoveNamespace(prefix);
}
}
}
/// <summary>
/// Creates a new QName Formatter
/// </summary>
/// <param name="formatName">Format Name</param>
/// <param name="qnameMapper">QName Map</param>
public QNameFormatter(String formatName, QNameOutputMapper qnameMapper)
: base(formatName)
{
this._qnameMapper = qnameMapper;
foreach (String prefix in this._qnameMapper.Prefixes.ToList())
{
if (!this.IsValidQName(prefix + ":"))
{
this._qnameMapper.RemoveNamespace(prefix);
}
}
}
/// <summary>
/// Formats a Graph Header by creating an <strong><rdf:RDF></strong> element and adding namespace definitions
/// </summary>
/// <param name="namespaces">Namespaces</param>
/// <returns></returns>
public string FormatGraphHeader(INamespaceMapper namespaces)
{
this._mapper = new QNameOutputMapper(namespaces);
StringBuilder output = new StringBuilder();
output.Append(this.GetGraphHeaderBase());
foreach (String prefix in namespaces.Prefixes)
{
if (!prefix.Equals("rdf"))
{
if (prefix.Equals(String.Empty))
{
output.Append(" xmlns=\"" + WriterHelper.EncodeForXml(namespaces.GetNamespaceUri(prefix).ToString()) + "\"");
}
else
{
output.Append(" xmlns:" + prefix + "=\"" + WriterHelper.EncodeForXml(namespaces.GetNamespaceUri(prefix).ToString()) + "\"");
}
}
}
output.Append(">");
return(output.ToString());
}
/// <summary>
/// Creates a new Base Writer Context with default settings
/// </summary>
/// <param name="g">Graph being written</param>
/// <param name="output">TextWriter being written to</param>
public BaseWriterContext(IGraph g, TextWriter output)
{
this._g = g;
this._output = output;
this._qnameMapper = new QNameOutputMapper(this._g.NamespaceMap);
}
/// <summary>
/// Creates a new Turtle Formatter
/// </summary>
/// <param name="formatName">Format Name</param>
/// <param name="qnameMapper">QName Map</param>
protected TurtleFormatter(String formatName, QNameOutputMapper qnameMapper)
: base(formatName, qnameMapper) { }
/// <summary>
/// Creates a new Turtle Formatter that uses the given QName mapper
/// </summary>
/// <param name="qnameMapper">QName Mapper</param>
public TurtleFormatter(QNameOutputMapper qnameMapper)
: base("Turtle", qnameMapper) { }
/// <summary>
/// Creates a new Turtle Formatter that uses the given QName mapper
/// </summary>
/// <param name="qnameMapper">QName Mapper</param>
public TurtleW3CFormatter(QNameOutputMapper qnameMapper)
: base("Turtle (W3C)", qnameMapper)
{
}
/// <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(this._namespaces != null ? this._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 (!this.Stylesheet.Equals(String.Empty))
{
writer.AddAttribute(HtmlTextWriterAttribute.Href, this.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();
#if !NO_WEB
writer.WriteLine();
#endif
//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, this.CssClassBlankNode);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
writer.WriteEncodedText(value.ToString());
writer.RenderEndTag();
break;
case NodeType.Literal:
ILiteralNode lit = (ILiteralNode)value;
writer.AddAttribute(HtmlTextWriterAttribute.Class, this.CssClassLiteral);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
if (lit.DataType != null)
{
writer.WriteEncodedText(lit.Value);
writer.RenderEndTag();
writer.WriteEncodedText("^^");
writer.AddAttribute(HtmlTextWriterAttribute.Href, this._formatter.FormatUri(lit.DataType.ToString()));
writer.AddAttribute(HtmlTextWriterAttribute.Class, this.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, this.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, this.CssClassUri);
writer.AddAttribute(HtmlTextWriterAttribute.Href, this._formatter.FormatUri(this.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();
#if !NO_WEB
writer.WriteLine();
#endif
}
//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
}
/// <summary>
/// Creates a new Turtle Formatter.
/// </summary>
/// <param name="formatName">Format Name.</param>
/// <param name="qnameMapper">QName Map.</param>
protected TurtleW3CFormatter(string formatName, QNameOutputMapper qnameMapper)
: base(formatName, qnameMapper)
{
}
/// <summary>
/// Creates a new Turtle Formatter that uses the given QName mapper.
/// </summary>
/// <param name="qnameMapper">QName Mapper.</param>
public TurtleW3CFormatter(QNameOutputMapper qnameMapper)
: base("Turtle (W3C)", qnameMapper)
{
}
/// <summary>
/// Creates a new Turtle Formatter that uses the given QName mapper.
/// </summary>
/// <param name="qnameMapper">QName Mapper.</param>
public TurtleFormatter(QNameOutputMapper qnameMapper)
: base("Turtle", qnameMapper)
{
}
/// <summary>
/// Formats a Graph Footer by closing the <strong><rdf:RDF></strong> element
/// </summary>
/// <returns></returns>
public string FormatGraphFooter()
{
this._mapper = null;
return "</rdf:RDF>";
}
/// <summary>
/// Creates a new QName Formatter
/// </summary>
/// <param name="formatName">Format Name</param>
/// <param name="qnameMapper">QName Map</param>
/// <param name="allowAKeyword">Whether the 'a' keyword can be used for the RDF type predicate</param>
public QNameFormatter(String formatName, QNameOutputMapper qnameMapper, bool allowAKeyword)
: this(formatName, qnameMapper)
{
this._allowAKeyword = allowAKeyword;
}
/// <summary>
/// Creates a new Base Writer Context with default settings.
/// </summary>
/// <param name="g">Graph being written.</param>
/// <param name="output">TextWriter being written to.</param>
public BaseWriterContext(IGraph g, TextWriter output)
{
_g = g;
_output = output;
_qnameMapper = new QNameOutputMapper(_g.NamespaceMap);
}
/// <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(this._namespaces != null ? this._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 (!this.Stylesheet.Equals(String.Empty))
{
writer.AddAttribute(HtmlTextWriterAttribute.Href, this.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();
#if !NO_WEB
writer.WriteLine();
#endif
//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, this.CssClassBlankNode);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
writer.WriteEncodedText(value.ToString());
writer.RenderEndTag();
break;
case NodeType.Literal:
ILiteralNode lit = (ILiteralNode)value;
writer.AddAttribute(HtmlTextWriterAttribute.Class, this.CssClassLiteral);
writer.RenderBeginTag(HtmlTextWriterTag.Span);
if (lit.DataType != null)
{
writer.WriteEncodedText(lit.Value);
writer.RenderEndTag();
writer.WriteEncodedText("^^");
writer.AddAttribute(HtmlTextWriterAttribute.Href, this._formatter.FormatUri(lit.DataType.ToString()));
writer.AddAttribute(HtmlTextWriterAttribute.Class, this.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, this.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, this.CssClassUri);
writer.AddAttribute(HtmlTextWriterAttribute.Href, this._formatter.FormatUri(this.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();
#if !NO_WEB
writer.WriteLine();
#endif
}
//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
}
/// <summary>
/// Formats a Graph Footer by closing the <strong><rdf:RDF></strong> element.
/// </summary>
/// <returns></returns>
public string FormatGraphFooter()
{
_mapper = null;
return("</rdf:RDF>");
}
/// <summary>
/// Creates a new QName Formatter
/// </summary>
/// <param name="formatName">Format Name</param>
/// <param name="qnameMapper">QName Map</param>
/// <param name="allowAKeyword">Whether the 'a' keyword can be used for the RDF type predicate</param>
public QNameFormatter(String formatName, QNameOutputMapper qnameMapper, bool allowAKeyword)
: this(formatName, qnameMapper)
{
this._allowAKeyword = allowAKeyword;
}
/// <summary>
/// Creates a new Base Writer Context with default settings
/// </summary>
/// <param name="g">Graph being written</param>
/// <param name="output">TextWriter being written to</param>
public BaseWriterContext(IGraph g, TextWriter output)
{
this._g = g;
this._output = output;
this._qnameMapper = new QNameOutputMapper(this._g.NamespaceMap);
}