Class FileLoader

Static Helper Class for loading RDF Files into Graphs/Triple Stores.

Inheritance

System.Object

FileLoader

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Parsing

Assembly: dotNetRdf.dll

Syntax

public static class FileLoader

Methods

Load(IGraph, string, IRdfReader)

Loads the contents of the given File into a Graph using the given RDF Parser.

Declaration

public static void Load(IGraph g, string filename, IRdfReader parser)

Parameters

Type	Name	Description
IGraph	g	Graph to load into.
string	filename	File to load from.
IRdfReader	parser	Parser to use.

Remarks

Note: FileLoader will assign the Graph a file URI as it's Base URI unless the Graph already has a Base URI or is non-empty prior to attempting parsing. Note that any Base URI specified in the RDF contained in the file will override this initial Base URI. In some cases this may lead to invalid RDF being accepted and generating strange relative URIs, if you encounter this either set a Base URI prior to calling this method or create an instance of the relevant parser and invoke it directly.

If a File URI is assigned it will always be an absolute URI for the file.

Load(IGraph, string)

Loads the contents of the given File into a Graph providing the RDF format can be determined.

Declaration

public static void Load(IGraph g, string filename)

Parameters

Type	Name	Description
IGraph	g	Graph to load into.
string	filename	File to load from.

Remarks

The FileLoader first attempts to select a RDF Parser by examining the file extension to select the most likely MIME type for the file. This assumes that the file extension corresponds to one of the recognized file extensions for a RDF format the library supports. If this suceeds then a parser is chosen and will be used to attempt to parse the input.

Should this fail then the contents of the file will be read into a String, the StringParser is then used to attempt to parse it. The StringParser uses some simple rules to guess which format the input is likely to be and chooses a parser based on it's guess.

Note: FileLoader will assign the Graph a file URI as it's Base URI unless the Graph already has a Base URI or is non-empty prior to attempting parsing. Note that any Base URI specified in the RDF contained in the file will override this initial Base URI. In some cases this may lead to invalid RDF being accepted and generating strange relative URIs, if you encounter this either set a Base URI prior to calling this method or create an instance of the relevant parser and invoke it directly.

If a File URI is assigned it will always be an absolute URI for the file.

Load(IRdfHandler, string, IRdfReader)

Loads the contents of the given File using a RDF Handler using the given RDF Parser.

Declaration

public static void Load(IRdfHandler handler, string filename, IRdfReader parser)

Parameters

Type	Name	Description
IRdfHandler	handler	RDF Handler to use.
string	filename	File to load from.
IRdfReader	parser	Parser to use.

Remarks

Note: FileLoader will assign the Graph a file URI as it's Base URI unless the Graph already has a Base URI or is non-empty prior to attempting parsing. Note that any Base URI specified in the RDF contained in the file will override this initial Base URI. In some cases this may lead to invalid RDF being accepted and generating strange relative URIs, if you encounter this either set a Base URI prior to calling this method or create an instance of the relevant parser and invoke it directly.

If a File URI is assigned it will always be an absolute URI for the file.

Load(IRdfHandler, string, IStoreReader)

Loads the contents of the given File using a RDF Handler providing the RDF dataset format can be determined.

Declaration

public static void Load(IRdfHandler handler, string filename, IStoreReader parser)

Parameters

Type	Name	Description
IRdfHandler	handler	RDF Handler to use.
string	filename	File to load from.
IStoreReader	parser	Parser to use to parse the given file.

Remarks

If the parser parameter is set to null then the FileLoader attempts to select a Store Parser by examining the file extension to select the most likely MIME type for the file. This assume that the file extension corresponds to one of the recognized file extensions for a RDF dataset format the library supports. If this suceeds then a parser is chosen and used to parse the input file.

Load(IRdfHandler, string)

Loads the contents of the given File using a RDF Handler providing the RDF format can be determined.

Declaration

public static void Load(IRdfHandler handler, string filename)

Parameters

Type	Name	Description
IRdfHandler	handler	RDF Handler to use.
string	filename	File to load from.

Remarks

The FileLoader first attempts to select a RDF Parser by examining the file extension to select the most likely MIME type for the file. This assumes that the file extension corresponds to one of the recognized file extensions for a RDF format the library supports. If this suceeds then a parser is chosen and will be used to attempt to parse the input.

Should this fail then the contents of the file will be read into a String, the StringParser is then used to attempt to parse it. The StringParser uses some simple rules to guess which format the input is likely to be and chooses a parser based on it's guess.

Load(ITripleStore, string, IStoreReader)

Loads the contents of the given File into a Triple Store providing the RDF dataset format can be determined.

Declaration

public static void Load(ITripleStore store, string filename, IStoreReader parser)

Parameters

Type	Name	Description
ITripleStore	store	Triple Store to load into.
string	filename	File to load from.
IStoreReader	parser	Parser to use to parse the given file.

Remarks

If the parser parameter is set to null then the FileLoader attempts to select a Store Parser by examining the file extension to select the most likely MIME type for the file. This assume that the file extension corresponds to one of the recognized file extensions for a RDF dataset format the library supports. If this suceeds then a parser is chosen and used to parse the input file.

Load(ITripleStore, string)

Loads the contents of the given File into a Triple Store providing the RDF dataset format can be determined.

Declaration

public static void Load(ITripleStore store, string filename)

Parameters

Type	Name	Description
ITripleStore	store	Triple Store to load into.
string	filename	File to load from.

Remarks

The FileLoader attempts to select a Store Parser by examining the file extension to select the most likely MIME type for the file. This assume that the file extension corresponds to one of the recognized file extensions for a RDF dataset format the library supports. If this suceeds then a parser is chosen and used to parse the input file.

LoadDataset(IRdfHandler, string)

Loads the contents of the given File using a RDF Handler providing the RDF dataset format can be determined.

Declaration

public static void LoadDataset(IRdfHandler handler, string filename)

Parameters

Type	Name	Description
IRdfHandler	handler	RDF Handler to use.
string	filename	File to load from.

Remarks

The FileLoader attempts to select a Store Parser by examining the file extension to select the most likely MIME type for the file. This assume that the file extension corresponds to one of the recognized file extensions for a RDF dataset format the library supports. If this suceeds then a parser is chosen and used to parse the input file.

Events

StoreWarning

Event which is raised when the Store parser invoked by the FileLoader detects a non-fatal issue with the RDF syntax

Declaration

public static event StoreReaderWarning StoreWarning

Event Type

Type	Description
StoreReaderWarning

Warning

Event which is raised when the parser invoked by the FileLoader detects a non-fatal issue with the RDF syntax

Declaration

public static event RdfReaderWarning Warning

Event Type

Type	Description
RdfReaderWarning