/// <summary>
/// List-based ctor to build a container of the given flavor and given type with given items
/// </summary>
public RDFContainer(RDFModelEnums.RDFContainerTypes containerType, RDFModelEnums.RDFItemTypes itemType, ArrayList items): this(containerType, itemType) {
if (items != null) {
switch (this.ItemType) {
case RDFModelEnums.RDFItemTypes.Resource:
foreach (var item in items) {
if (item is RDFResource) {
this.AddItem(item);
}
else {
throw new RDFModelException("Cannot create RDFContainer because all the elements must be resources.");
}
}
break;
case RDFModelEnums.RDFItemTypes.Literal:
foreach (var item in items) {
if (item is RDFLiteral) {
this.AddItem(item);
}
else {
throw new RDFModelException("Cannot create RDFContainer because all the elements must be literals.");
}
}
break;
}
}
}
/// <summary>
/// Default ctor to build an empty container of the given flavor and given type
/// </summary>
public RDFContainer(RDFModelEnums.RDFContainerTypes containerType, RDFModelEnums.RDFItemTypes itemType)
{
this.ContainerType = containerType;
this.ItemType = itemType;
this.ReificationSubject = new RDFResource();
this.Items = new ArrayList();
}
/// <summary>
/// Writes the given graph to the given file in the given RDF format.
/// </summary>
public static void WriteRDF(RDFModelEnums.RDFFormats rdfFormat, RDFGraph graph, String filepath) {
if (graph != null) {
if (filepath != null) {
switch(rdfFormat) {
case RDFModelEnums.RDFFormats.NTriples:
RDFNTriples.Serialize(graph, filepath);
break;
case RDFModelEnums.RDFFormats.RdfXml:
RDFXml.Serialize(graph, filepath);
break;
case RDFModelEnums.RDFFormats.TriX:
RDFTrix.Serialize(graph, filepath);
break;
case RDFModelEnums.RDFFormats.Turtle:
RDFTurtle.Serialize(graph, filepath);
break;
}
}
else {
throw new RDFModelException("Cannot write RDF file because given \"filepath\" parameter is null.");
}
}
else {
throw new RDFModelException("Cannot write RDF file because given \"graph\" parameter is null.");
}
}
/// <summary>
/// Writes the given graph to the given file in the given RDF syntax.
/// </summary>
public static void WriteRDF(RDFModelEnums.RDFSyntaxes rdfSyntax, RDFGraph graph, String filepath) {
if (graph != null) {
if (filepath != null && filepath.Trim() != String.Empty) {
switch(rdfSyntax) {
case RDFModelEnums.RDFSyntaxes.NTriples:
RDFNTriples.Serialize(graph, filepath);
break;
case RDFModelEnums.RDFSyntaxes.RdfXml:
RDFXml.Serialize(graph, filepath);
break;
case RDFModelEnums.RDFSyntaxes.TriX:
RDFTrix.Serialize(graph, filepath);
break;
case RDFModelEnums.RDFSyntaxes.Turtle:
RDFTurtle.Serialize(graph, filepath);
break;
default:
throw new RDFModelException("Cannot write RDF file because " + rdfSyntax + " writing is not supported.");
}
}
else {
throw new RDFModelException("Cannot write RDF file because given \"filepath\" parameter is null or empty.");
}
}
else {
throw new RDFModelException("Cannot write RDF file because given \"graph\" parameter is null.");
}
}
/// <summary>
/// Default-ctor to build a typed literal with given value and given datatype.
/// Semantic validation of given value against given datatype is performed.
/// </summary>
public RDFTypedLiteral(String value, RDFModelEnums.RDFDatatypes datatype)
{
this.Value = (value ?? String.Empty);
this.Datatype = datatype;
if (RDFModelUtilities.ValidateTypedLiteral(this)) {
this.PatternMemberID = RDFModelUtilities.CreateHash(this.ToString());
}
else {
throw new RDFModelException("Cannot create RDFTypedLiteral because given \"value\" parameter (" + value + ") is not well-formed against given \"datatype\" parameter (" + RDFModelUtilities.GetDatatypeFromEnum(datatype) + ")");
}
}
/// <summary>
/// Default-ctor to build a filter on the given variable for the given datatype
/// </summary>
public RDFDatatypeFilter(RDFVariable variable, RDFModelEnums.RDFDatatypes datatype)
{
if (variable != null) {
this.Variable = variable;
this.Datatype = datatype;
this.FilterID = RDFModelUtilities.CreateHash(this.ToString());
}
else {
throw new RDFQueryException("Cannot create RDFDatatypeFilter because given \"variable\" parameter is null.");
}
}
/// <summary>
/// Reads the given file in the given RDF format to a graph.
/// </summary>
public static RDFGraph ReadRDF(RDFModelEnums.RDFFormats rdfFormat, String filepath) {
if (filepath != null) {
if (File.Exists(filepath)) {
switch(rdfFormat) {
case RDFModelEnums.RDFFormats.NTriples:
return RDFNTriples.Deserialize(filepath);
case RDFModelEnums.RDFFormats.RdfXml:
return RDFXml.Deserialize(filepath);
case RDFModelEnums.RDFFormats.TriX:
return RDFTrix.Deserialize(filepath);
case RDFModelEnums.RDFFormats.Turtle:
throw new RDFModelException("Cannot read RDF file because reading of Turtle format is not supported. What about joining the project to contribute it?");
}
}
throw new RDFModelException("Cannot read RDF file because given \"filepath\" parameter (" + filepath + ") does not indicate an existing file.");
}
throw new RDFModelException("Cannot read RDF file because given \"filepath\" parameter is null.");
}
/// <summary>
/// Reads the given file in the given RDF syntax to a graph.
/// </summary>
public static RDFGraph ReadRDF(RDFModelEnums.RDFSyntaxes rdfSyntax, String filepath) {
if (filepath != null && filepath.Trim() != String.Empty) {
if (File.Exists(filepath.Trim())) {
switch(rdfSyntax) {
case RDFModelEnums.RDFSyntaxes.NTriples:
return RDFNTriples.Deserialize(filepath);
case RDFModelEnums.RDFSyntaxes.RdfXml:
return RDFXml.Deserialize(filepath);
case RDFModelEnums.RDFSyntaxes.TriX:
return RDFTrix.Deserialize(filepath);
default:
throw new RDFModelException("Cannot read RDF file because " + rdfSyntax + " reading is not supported.");
}
}
throw new RDFModelException("Cannot read RDF file because given \"filepath\" parameter does not indicate an existing file.");
}
throw new RDFModelException("Cannot read RDF file because given \"filepath\" parameter is null or empty.");
}
/// <summary>
/// Given an element representing a RDF container, iterates on its constituent elements
/// to build its standard reification triples.
/// </summary>
internal static void ParseContainerElements(RDFModelEnums.RDFContainerTypes contType, XmlNode container,
RDFResource subj, RDFResource pred, RDFGraph result) {
//Attach the container as the blank object of the current pred
RDFResource obj = new RDFResource();
result.AddTriple(new RDFTriple(subj, pred, obj));
//obj -> rdf:type -> rdf:[Bag|Seq|Alt]
switch (contType) {
case RDFModelEnums.RDFContainerTypes.Bag:
result.AddTriple(new RDFTriple(obj, RDFVocabulary.RDF.TYPE, RDFVocabulary.RDF.BAG));
break;
case RDFModelEnums.RDFContainerTypes.Seq:
result.AddTriple(new RDFTriple(obj, RDFVocabulary.RDF.TYPE, RDFVocabulary.RDF.SEQ));
break;
default:
result.AddTriple(new RDFTriple(obj, RDFVocabulary.RDF.TYPE, RDFVocabulary.RDF.ALT));
break;
}
//Iterate on the container items
if (container.HasChildNodes) {
IEnumerator elems = container.ChildNodes.GetEnumerator();
List<String> elemVals = new List<String>();
while (elems != null && elems.MoveNext()) {
XmlNode elem = (XmlNode)elems.Current;
XmlAttribute elemUri = GetRdfResourceAttribute(elem);
#region Container Resource Item
//This is a container of resources
if (elemUri != null) {
//Sanitize eventual blank node value detected by presence of "nodeID" attribute
if (elemUri.LocalName.Equals("nodeID", StringComparison.Ordinal)) {
if (!elemUri.Value.StartsWith("bnode:")) {
elemUri.Value = "bnode:" + elemUri.Value;
}
}
//obj -> rdf:_N -> VALUE
if (contType == RDFModelEnums.RDFContainerTypes.Alt) {
if (!elemVals.Contains(elemUri.Value)) {
elemVals.Add(elemUri.Value);
result.AddTriple(new RDFTriple(obj, new RDFResource(RDFVocabulary.RDF.BASE_URI + elem.LocalName), new RDFResource(elemUri.Value)));
}
}
else {
result.AddTriple(new RDFTriple(obj, new RDFResource(RDFVocabulary.RDF.BASE_URI + elem.LocalName), new RDFResource(elemUri.Value)));
}
}
#endregion
#region Container Literal Item
//This is a container of literals
else {
//Parse the literal contained in the item
RDFLiteral literal = null;
XmlAttribute attr = GetRdfDatatypeAttribute(elem);
if (attr != null) {
literal = new RDFTypedLiteral(elem.InnerText, RDFModelUtilities.GetDatatypeFromString(attr.InnerText));
}
else {
attr = GetXmlLangAttribute(elem);
literal = new RDFPlainLiteral(elem.InnerText, (attr != null ? attr.InnerText : String.Empty));
}
//obj -> rdf:_N -> VALUE
if (contType == RDFModelEnums.RDFContainerTypes.Alt) {
if (!elemVals.Contains(literal.ToString())) {
elemVals.Add(literal.ToString());
result.AddTriple(new RDFTriple(obj, new RDFResource(RDFVocabulary.RDF.BASE_URI + elem.LocalName), literal));
}
}
else {
result.AddTriple(new RDFTriple(obj, new RDFResource(RDFVocabulary.RDF.BASE_URI + elem.LocalName), literal));
}
}
#endregion
}
}
}
/// <summary>
/// Gives the string representation of the given RDF/RDFS/XSD datatype
/// </summary>
internal static String GetDatatypeFromEnum(RDFModelEnums.RDFDatatypes datatype)
{
if (datatype.Equals(RDFModelEnums.RDFDatatypes.RDF_XMLLITERAL)) {
return RDFVocabulary.RDF.XML_LITERAL.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_ANYURI)) {
return RDFVocabulary.XSD.ANY_URI.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_BASE64BINARY)) {
return RDFVocabulary.XSD.BASE64_BINARY.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_BOOLEAN)) {
return RDFVocabulary.XSD.BOOLEAN.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_BYTE)) {
return RDFVocabulary.XSD.BYTE.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_DATE)) {
return RDFVocabulary.XSD.DATE.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_DATETIME)) {
return RDFVocabulary.XSD.DATETIME.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_DECIMAL)) {
return RDFVocabulary.XSD.DECIMAL.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_DOUBLE)) {
return RDFVocabulary.XSD.DOUBLE.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_DURATION)) {
return RDFVocabulary.XSD.DURATION.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_FLOAT)) {
return RDFVocabulary.XSD.FLOAT.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_GDAY)) {
return RDFVocabulary.XSD.G_DAY.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_GMONTH)) {
return RDFVocabulary.XSD.G_MONTH.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_GMONTHDAY)) {
return RDFVocabulary.XSD.G_MONTH_DAY.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_GYEAR)) {
return RDFVocabulary.XSD.G_YEAR.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_GYEARMONTH)) {
return RDFVocabulary.XSD.G_YEAR_MONTH.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_HEXBINARY)) {
return RDFVocabulary.XSD.HEX_BINARY.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_INT)) {
return RDFVocabulary.XSD.INT.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_INTEGER)) {
return RDFVocabulary.XSD.INTEGER.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_LANGUAGE)) {
return RDFVocabulary.XSD.LANGUAGE.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_LONG)) {
return RDFVocabulary.XSD.LONG.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NAME)) {
return RDFVocabulary.XSD.NAME.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NCNAME)) {
return RDFVocabulary.XSD.NCNAME.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_ID)) {
return RDFVocabulary.XSD.ID.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NEGATIVEINTEGER)) {
return RDFVocabulary.XSD.NEGATIVE_INTEGER.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NMTOKEN)) {
return RDFVocabulary.XSD.NMTOKEN.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NONNEGATIVEINTEGER)) {
return RDFVocabulary.XSD.NON_NEGATIVE_INTEGER.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NONPOSITIVEINTEGER)) {
return RDFVocabulary.XSD.NON_POSITIVE_INTEGER.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NORMALIZEDSTRING)) {
return RDFVocabulary.XSD.NORMALIZED_STRING.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_NOTATION)) {
return RDFVocabulary.XSD.NOTATION.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_POSITIVEINTEGER)) {
return RDFVocabulary.XSD.POSITIVE_INTEGER.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_QNAME)) {
return RDFVocabulary.XSD.QNAME.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_SHORT)) {
return RDFVocabulary.XSD.SHORT.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_STRING)) {
return RDFVocabulary.XSD.STRING.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_TIME)) {
return RDFVocabulary.XSD.TIME.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_TOKEN)) {
return RDFVocabulary.XSD.TOKEN.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_UNSIGNEDBYTE)) {
return RDFVocabulary.XSD.UNSIGNED_BYTE.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_UNSIGNEDINT)) {
return RDFVocabulary.XSD.UNSIGNED_INT.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_UNSIGNEDLONG)) {
return RDFVocabulary.XSD.UNSIGNED_LONG.ToString();
}
else if (datatype.Equals(RDFModelEnums.RDFDatatypes.XSD_UNSIGNEDSHORT)) {
return RDFVocabulary.XSD.UNSIGNED_SHORT.ToString();
}
else {
return RDFVocabulary.RDFS.LITERAL.ToString();
}
}
/// <summary>
/// Default ctor to build an empty collection of the given type
/// </summary>
public RDFCollection(RDFModelEnums.RDFItemTypes itemType)
{
this.ItemType = itemType;
this.ReificationSubject = new RDFResource();
this.Items = new ArrayList();
}
/// <summary>
/// Default-ctor to build a RDFCollectionItem with the given parameters
/// </summary>
internal RDFCollectionItem(RDFModelEnums.RDFItemTypes itemType, Object itemValue, Object itemNext)
{
this.ItemType = itemType;
this.ItemValue = itemValue;
this.ItemNext = itemNext;
}