Package org.eclipse.rdf4j.rio.helpers

Class AbstractRDFParser

java.lang.Object

org.eclipse.rdf4j.rio.helpers.AbstractRDFParser

All Implemented Interfaces:

RDFParser

Direct Known Subclasses:

BinaryRDFParser, HDTParser, JSONLDParser, NTriplesParser, RDFJSONParser, TurtleParser, XMLReaderBasedParser

public abstract class AbstractRDFParser
extends Object
implements RDFParser

Base class for RDFParsers offering common functionality for RDF parsers.

Author:

Arjohn Kampman

Field Summary

Fields

Modifier and Type	Field	Description
protected RDFHandler	rdfHandler	The RDFHandler that will handle the parsed RDF.
protected ValueFactory	valueFactory	The ValueFactory to use for creating RDF model objects.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractRDFParser()	Creates a new RDFParserBase that will use a SimpleValueFactory to create RDF model objects.
protected	AbstractRDFParser(ValueFactory valueFactory)	Creates a new RDFParserBase that will use the supplied ValueFactory to create RDF model objects.

Method Summary

Modifier and Type	Method	Description
protected void	clear()	Clears any information that has been collected while parsing.
protected void	clearBNodeIDMap()	Deprecated. Map is no longer used, call clear() instead.
protected BNode	createBNode()	Deprecated.
protected BNode	createBNode(String nodeID)	Deprecated.
protected Literal	createLiteral(String label, String lang, IRI datatype)	Creates a Literal object with the supplied parameters.
protected Literal	createLiteral(String label, String lang, IRI datatype, long lineNo, long columnNo)	Creates a Literal object with the supplied parameters, using the lineNo and columnNo to enhance error messages or exceptions that may be generated during the creation of the literal.
protected Resource	createNode()	Creates a new BNode or Skolem IRI object.
protected Resource	createNode(String nodeID)	Creates a BNode or Skolem IRI object for the specified identifier.
protected Statement	createStatement(Resource subj, IRI pred, Value obj)	Creates a new Statement object with the supplied components.
protected Statement	createStatement(Resource subj, IRI pred, Value obj, Resource context)	Creates a new Statement object with the supplied components.
protected IRI	createURI(String uri)	Creates a IRI object for the specified URI-string.
protected String	getNamespace(String prefix)	Gets the namespace that is associated with the specified prefix or throws an RDFParseException.
ParseErrorListener	getParseErrorListener()
ParseLocationListener	getParseLocationListener()
ParserConfig	getParserConfig()	Retrieves the current parser configuration as a single object.
RDFHandler	getRDFHandler()
Collection<RioSetting<?>>	getSupportedSettings()
protected void	initializeNamespaceTableFromConfiguration()
boolean	preserveBNodeIDs()
protected void	reportError(Exception e, long lineNo, long columnNo, RioSetting<Boolean> relevantSetting)	Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.
protected void	reportError(Exception e, RioSetting<Boolean> relevantSetting)	Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.
protected void	reportError(String msg, long lineNo, long columnNo, RioSetting<Boolean> relevantSetting)	Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.
protected void	reportError(String msg, Exception e, long lineNo, long columnNo, RioSetting<Boolean> relevantSetting)	Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.
protected void	reportError(String msg, RioSetting<Boolean> relevantSetting)	Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.
protected void	reportFatalError(Exception e)	Reports a fatal error to the registered ParseErrorListener, if any, and throws a ParseException afterwards.
protected void	reportFatalError(Exception e, long lineNo, long columnNo)	Reports a fatal error with associated line- and column number to the registered ParseErrorListener, if any, and throws a ParseException wrapped the supplied exception afterwards.
protected void	reportFatalError(String msg)	Reports a fatal error to the registered ParseErrorListener, if any, and throws a ParseException afterwards.
protected void	reportFatalError(String msg, long lineNo, long columnNo)	Reports a fatal error with associated line- and column number to the registered ParseErrorListener, if any, and throws a ParseException afterwards.
protected void	reportFatalError(String message, Exception e, long lineNo, long columnNo)	Reports a fatal error with associated line- and column number to the registered ParseErrorListener, if any, and throws a ParseException wrapped the supplied exception afterwards.
protected void	reportLocation(long lineNo, long columnNo)	Reports the specified line- and column number to the registered ParseLocationListener, if any.
protected void	reportWarning(String msg)	Reports a warning to the registered ParseErrorListener, if any.
protected void	reportWarning(String msg, long lineNo, long columnNo)	Reports a warning with associated line- and column number to the registered ParseErrorListener, if any.
protected IRI	resolveURI(String uriSpec)	Resolves a URI-string against the base URI and creates a IRI object for it.
<T> RDFParser	set(RioSetting<T> setting, T value)	Set a setting on the parser, and return this parser object to allow chaining.
protected void	setBaseURI(String uriSpec)	Parses the supplied URI-string and sets it as the base URI for resolving relative URIs.
protected void	setBaseURI(ParsedIRI baseURI)	Sets the base URI for resolving relative URIs.
protected void	setNamespace(String prefix, String namespace)	Associates the specified prefix to the specified namespace.
RDFParser	setParseErrorListener(ParseErrorListener el)	Sets the ParseErrorListener that will be notified of any errors that this parser finds during parsing.
RDFParser	setParseLocationListener(ParseLocationListener el)	Sets the ParseLocationListener that will be notified of the parser's progress during the parse process.
RDFParser	setParserConfig(ParserConfig config)	Sets all supplied parser configuration options.
void	setPreserveBNodeIDs(boolean preserveBNodeIDs)	Set whether the parser should preserve bnode identifiers specified in the source (default is false).
RDFParser	setRDFHandler(RDFHandler handler)	Sets the RDFHandler that will handle the parsed RDF data.
RDFParser	setValueFactory(ValueFactory valueFactory)	Sets the ValueFactory that the parser will use to create Value objects for the parsed RDF data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.rdf4j.rio.RDFParser

getRDFFormat, parse, parse, parse, parse

Field Details

rdfHandler

protected RDFHandler rdfHandler

The RDFHandler that will handle the parsed RDF.

valueFactory

protected ValueFactory valueFactory

The ValueFactory to use for creating RDF model objects.

Constructor Details

AbstractRDFParser

protected AbstractRDFParser()

Creates a new RDFParserBase that will use a SimpleValueFactory to create RDF model objects.

AbstractRDFParser

protected AbstractRDFParser(ValueFactory valueFactory)

Creates a new RDFParserBase that will use the supplied ValueFactory to create RDF model objects.

Parameters:

valueFactory - A ValueFactory.

Method Details

setValueFactory

public RDFParser setValueFactory(ValueFactory valueFactory)

Description copied from interface: RDFParser

Sets the ValueFactory that the parser will use to create Value objects for the parsed RDF data.

Specified by:

setValueFactory in interface RDFParser

Parameters:

valueFactory - The value factory that the parser should use.

Returns:

Either a copy of this parser, if it is immutable, or this object, to allow chaining of method calls.

setRDFHandler

public RDFParser setRDFHandler(RDFHandler handler)

Description copied from interface: RDFParser

Sets the RDFHandler that will handle the parsed RDF data.

Specified by:

setRDFHandler in interface RDFParser

Parameters:

handler - The RDFHandler to handle the parsed data.

Returns:

Either a copy of this parser, if it is immutable, or this object, to allow chaining of method calls.

getRDFHandler

public RDFHandler getRDFHandler()

setParseErrorListener

public RDFParser setParseErrorListener(ParseErrorListener el)

Description copied from interface: RDFParser

Sets the ParseErrorListener that will be notified of any errors that this parser finds during parsing.

Specified by:

setParseErrorListener in interface RDFParser

Parameters:

el - The ParseErrorListener that will be notified of errors or warnings.

Returns:

Either a copy of this parser, if it is immutable, or this object, to allow chaining of method calls.

getParseErrorListener

public ParseErrorListener getParseErrorListener()

setParseLocationListener

public RDFParser setParseLocationListener(ParseLocationListener el)

Description copied from interface: RDFParser

Sets the ParseLocationListener that will be notified of the parser's progress during the parse process.

Specified by:

setParseLocationListener in interface RDFParser

Parameters:

el - The ParseLocationListener that will be notified of the parser's progress.

Returns:

Either a copy of this parser, if it is immutable, or this object, to allow chaining of method calls.

getParseLocationListener

public ParseLocationListener getParseLocationListener()

setParserConfig

public RDFParser setParserConfig(ParserConfig config)

Description copied from interface: RDFParser

Sets all supplied parser configuration options.

Specified by:

setParserConfig in interface RDFParser

Parameters:

config - a parser configuration object.

Returns:

Either a copy of this parser, if it is immutable, or this object, to allow chaining of method calls.

getParserConfig

public ParserConfig getParserConfig()

Description copied from interface: RDFParser

Retrieves the current parser configuration as a single object.

Specified by:

getParserConfig in interface RDFParser

Returns:

a parser configuration object representing the current configuration of the parser.

getSupportedSettings

public Collection<RioSetting<?>> getSupportedSettings()

Specified by:

getSupportedSettings in interface RDFParser

Returns:

A collection of RioSettings that are supported by this RDFParser.

set

public <T> RDFParser set(RioSetting<T> setting,
 T value)

Description copied from interface: RDFParser

Set a setting on the parser, and return this parser object to allow chaining.

Specified by:

set in interface RDFParser

Parameters:

setting - The setting to change.

value - The value to change.

Returns:

Either a copy of this parser, if it is immutable, or this object, to allow chaining of method calls.

setPreserveBNodeIDs

public void setPreserveBNodeIDs(boolean preserveBNodeIDs)

Description copied from interface: RDFParser

Set whether the parser should preserve bnode identifiers specified in the source (default is false).

Specified by:

setPreserveBNodeIDs in interface RDFParser

preserveBNodeIDs

public boolean preserveBNodeIDs()

setBaseURI

protected void setBaseURI(String uriSpec)

Parses the supplied URI-string and sets it as the base URI for resolving relative URIs.

setBaseURI

protected void setBaseURI(ParsedIRI baseURI)

Sets the base URI for resolving relative URIs.

setNamespace

protected void setNamespace(String prefix,
 String namespace)

Associates the specified prefix to the specified namespace.

getNamespace

protected String getNamespace(String prefix)
                       throws RDFParseException

Gets the namespace that is associated with the specified prefix or throws an RDFParseException.

Throws:

RDFParseException - if no namespace is associated with this prefix

clear

protected void clear()

Clears any information that has been collected while parsing. This method must be called by subclasses when finishing the parse process.

initializeNamespaceTableFromConfiguration

protected void initializeNamespaceTableFromConfiguration()

clearBNodeIDMap

@Deprecated
protected void clearBNodeIDMap()

Deprecated.

Map is no longer used, call clear() instead.

Clears the map that keeps track of blank nodes that have been parsed. Normally, this map is clear when the document has been parsed completely, but subclasses can clear the map at other moments too, for example when a bnode scope ends.

resolveURI

protected IRI resolveURI(String uriSpec)
                  throws RDFParseException

Resolves a URI-string against the base URI and creates a IRI object for it.

Throws:

RDFParseException

createURI

protected IRI createURI(String uri)
                 throws RDFParseException

Creates a IRI object for the specified URI-string.

Throws:

RDFParseException

createNode

protected Resource createNode()
                       throws RDFParseException

Creates a new BNode or Skolem IRI object.

Returns:

blank node or skolem IRI

Throws:

RDFParseException

createNode

protected Resource createNode(String nodeID)
                       throws RDFParseException

Creates a BNode or Skolem IRI object for the specified identifier.

Parameters:

nodeID - node identifier

Returns:

blank node or skolem IRI

Throws:

RDFParseException

createBNode

@Deprecated
protected BNode createBNode()
                     throws RDFParseException

Deprecated.

Creates a new BNode object.

Throws:

RDFParseException

createBNode

@Deprecated
protected BNode createBNode(String nodeID)
                     throws RDFParseException

Deprecated.

Creates a BNode object for the specified identifier.

Throws:

RDFParseException

createLiteral

protected Literal createLiteral(String label,
 String lang,
 IRI datatype)
                         throws RDFParseException

Creates a Literal object with the supplied parameters.

Throws:

RDFParseException

createLiteral

protected Literal createLiteral(String label,
 String lang,
 IRI datatype,
 long lineNo,
 long columnNo)
                         throws RDFParseException

Creates a Literal object with the supplied parameters, using the lineNo and columnNo to enhance error messages or exceptions that may be generated during the creation of the literal.

Throws:

RDFParseException

See Also:

• RDFParserHelper.createLiteral(String, String, IRI, ParserConfig, ParseErrorListener, ValueFactory, long, long)

createStatement

protected Statement createStatement(Resource subj,
 IRI pred,
 Value obj)
                             throws RDFParseException

Creates a new Statement object with the supplied components.

Throws:

RDFParseException

createStatement

protected Statement createStatement(Resource subj,
 IRI pred,
 Value obj,
 Resource context)
                             throws RDFParseException

Creates a new Statement object with the supplied components.

Throws:

RDFParseException

reportLocation

protected void reportLocation(long lineNo,
 long columnNo)

Reports the specified line- and column number to the registered ParseLocationListener, if any.

reportWarning

protected void reportWarning(String msg)

Reports a warning to the registered ParseErrorListener, if any. This method simply calls reportWarning(String, long, long) supplying -1 for the line- and column number.

reportWarning

protected void reportWarning(String msg,
 long lineNo,
 long columnNo)

Reports a warning with associated line- and column number to the registered ParseErrorListener, if any.

reportError

protected void reportError(String msg,
 RioSetting<Boolean> relevantSetting)
                    throws RDFParseException

Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.

This method also throws an RDFParseException when the given setting has been set to true and it is not a nonFatalError.

Parameters:

msg - The message to use for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

relevantSetting - The boolean setting that will be checked to determine if this is an issue that we need to look at at all. If this setting is true, then the error listener will receive the error, and if ParserConfig.isNonFatalError(RioSetting) returns true an exception will be thrown.

Throws:

RDFParseException - If RioConfig.get(RioSetting) returns true, and ParserConfig.isNonFatalError(RioSetting) returns true for the given setting.

reportError

protected void reportError(String msg,
 long lineNo,
 long columnNo,
 RioSetting<Boolean> relevantSetting)
                    throws RDFParseException

Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.

This method also throws an RDFParseException when the given setting has been set to true and it is not a nonFatalError.

Parameters:

msg - The message to use for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

lineNo - Optional line number, should default to setting this as -1 if not known. Used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

columnNo - Optional column number, should default to setting this as -1 if not known. Used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

relevantSetting - The boolean setting that will be checked to determine if this is an issue that we need to look at at all. If this setting is true, then the error listener will receive the error, and if ParserConfig.isNonFatalError(RioSetting) returns true an exception will be thrown.

Throws:

RDFParseException - If RioConfig.get(RioSetting) returns true, and ParserConfig.isNonFatalError(RioSetting) returns true for the given setting.

reportError

protected void reportError(Exception e,
 RioSetting<Boolean> relevantSetting)
                    throws RDFParseException

Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.

This method also throws an RDFParseException when the given setting has been set to true and it is not a nonFatalError.

Parameters:

e - The exception whose message will be used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

relevantSetting - The boolean setting that will be checked to determine if this is an issue that we need to look at at all. If this setting is true, then the error listener will receive the error, and if ParserConfig.isNonFatalError(RioSetting) returns true an exception will be thrown.

Throws:

RDFParseException - If RioConfig.get(RioSetting) returns true, and ParserConfig.isNonFatalError(RioSetting) returns true for the given setting.

reportError

protected void reportError(Exception e,
 long lineNo,
 long columnNo,
 RioSetting<Boolean> relevantSetting)
                    throws RDFParseException

Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.

This method also throws an RDFParseException when the given setting has been set to true and it is not a nonFatalError.

Parameters:

e - The exception whose message will be used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

lineNo - Optional line number, should default to setting this as -1 if not known. Used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

columnNo - Optional column number, should default to setting this as -1 if not known. Used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

relevantSetting - The boolean setting that will be checked to determine if this is an issue that we need to look at at all. If this setting is true, then the error listener will receive the error, and if ParserConfig.isNonFatalError(RioSetting) returns true an exception will be thrown.

Throws:

RDFParseException - If RioConfig.get(RioSetting) returns true, and ParserConfig.isNonFatalError(RioSetting) returns true for the given setting.

reportError

protected void reportError(String msg,
 Exception e,
 long lineNo,
 long columnNo,
 RioSetting<Boolean> relevantSetting)
                    throws RDFParseException

Reports an error with associated line- and column number to the registered ParseErrorListener, if the given setting has been set to true.

This method also throws an RDFParseException when the given setting has been set to true and it is not a nonFatalError.

Parameters:

msg - The message to use for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

e - The exception whose message will be used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

lineNo - Optional line number, should default to setting this as -1 if not known. Used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

columnNo - Optional column number, should default to setting this as -1 if not known. Used for ParseErrorListener.error(String, long, long) and for RDFParseException(String, long, long) .

relevantSetting - The boolean setting that will be checked to determine if this is an issue that we need to look at at all. If this setting is true, then the error listener will receive the error, and if ParserConfig.isNonFatalError(RioSetting) returns true an exception will be thrown.

Throws:

RDFParseException - If RioConfig.get(RioSetting) returns true, and ParserConfig.isNonFatalError(RioSetting) returns true for the given setting.

reportFatalError

protected void reportFatalError(String msg)
                         throws RDFParseException

Reports a fatal error to the registered ParseErrorListener, if any, and throws a ParseException afterwards. This method simply calls reportFatalError(String, long, long) supplying -1 for the line- and column number.

Throws:

RDFParseException

reportFatalError

protected void reportFatalError(String msg,
 long lineNo,
 long columnNo)
                         throws RDFParseException

Reports a fatal error with associated line- and column number to the registered ParseErrorListener, if any, and throws a ParseException afterwards.

Throws:

RDFParseException

reportFatalError

protected void reportFatalError(Exception e)
                         throws RDFParseException

Reports a fatal error to the registered ParseErrorListener, if any, and throws a ParseException afterwards. An exception is made for the case where the supplied exception is a RDFParseException; in that case the supplied exception is not wrapped in another ParseException and the error message is not reported to the ParseErrorListener, assuming that it has already been reported when the original ParseException was thrown.

This method simply calls reportFatalError(Exception, long, long) supplying -1 for the line- and column number.

Throws:

RDFParseException

reportFatalError

protected void reportFatalError(Exception e,
 long lineNo,
 long columnNo)
                         throws RDFParseException

Reports a fatal error with associated line- and column number to the registered ParseErrorListener, if any, and throws a ParseException wrapped the supplied exception afterwards. An exception is made for the case where the supplied exception is a RDFParseException; in that case the supplied exception is not wrapped in another ParseException and the error message is not reported to the ParseErrorListener, assuming that it has already been reported when the original ParseException was thrown.

Throws:

RDFParseException

reportFatalError

protected void reportFatalError(String message,
 Exception e,
 long lineNo,
 long columnNo)
                         throws RDFParseException

Reports a fatal error with associated line- and column number to the registered ParseErrorListener, if any, and throws a ParseException wrapped the supplied exception afterwards. An exception is made for the case where the supplied exception is a RDFParseException; in that case the supplied exception is not wrapped in another ParseException and the error message is not reported to the ParseErrorListener, assuming that it has already been reported when the original ParseException was thrown.

Throws:

RDFParseException