Package com.stardog.stark.io.ntriples

Class NTParser

java.lang.Object

com.stardog.stark.io.ntriples.NTParser

All Implemented Interfaces:

RDFParser

Direct Known Subclasses:

NQuadsParser

public class NTParser
extends Object
implements RDFParser

Default implementation of a parser for the RDF NTriples syntax

Since:

1.0

Version:

1.0

Author:

Michael Grove

Implementation Notes:

non-final because it shares a lot of parsing code with nquads

Field Summary

Fields

Modifier and Type	Field	Description
protected static final org.slf4j.Logger	LOGGER

Constructor Summary

Constructors

Constructor	Description
NTParser()

Method Summary

Modifier and Type	Method	Description
protected int	assertLineTerminates(IOParserContext theContext)	Verifies that there is only whitespace or comments until the end of the line.
RDFFormat	format()	The format this parser can parse
void	parse(IOParserContext theContext)
void	parse(InputStream theStream, RDFHandler theRDFHandler, Options theOptions)	Parse the content
protected int	parseNodeID(IOParserContext theContext, int c, StringBuilder name)
protected int	parseObject(IOParserContext theContext, int ch)
protected int	parsePredicate(IOParserContext theContext, int ch)
protected int	parseSubject(IOParserContext theContext, int ch)
protected int	parseUriRef(IOParserContext theContext, int ch, StringBuilder uriRef)
protected int	skipLine(int theChar, IOParserContext theContext)	Reads characters from reader until the first EOL has been read.
protected int	skipToEndOfLine(IOParserContext theContext, int theChar)	Reads characters from reader until the first EOL has been read.
protected int	skipWhitespace(IOParserContext theContext, int theChar)	Reads characters from reader until it finds a character that is not a space or tab, and returns this last character code point.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.stardog.stark.io.RDFParser

parse

Field Details

LOGGER

protected static final org.slf4j.Logger LOGGER

Constructor Details

NTParser

public NTParser()

Method Details

format

@Nonnull
public RDFFormat format()

The format this parser can parse

Specified by:

format in interface RDFParser

Returns:

the format

parse

public void parse(@Nonnull
 InputStream theStream,
 @Nonnull
 RDFHandler theRDFHandler,
 @Nonnull
 Options theOptions)
           throws IOException

Parse the content

Specified by:

parse in interface RDFParser

Parameters:

theStream - the stream to read from

theRDFHandler - the handler to pass parse events to

theOptions - the parsing options

Throws:

IOException - if there was an error while reading from the stream

parse

public void parse(@Nonnull
 IOParserContext theContext)
           throws IOException

Throws:

IOException

parseSubject

protected int parseSubject(@Nonnull
 IOParserContext theContext,
 int ch)
                    throws IOException

Throws:

IOException

parsePredicate

protected int parsePredicate(@Nonnull
 IOParserContext theContext,
 int ch)
                      throws IOException

Throws:

IOException

parseObject

protected int parseObject(@Nonnull
 IOParserContext theContext,
 int ch)
                   throws IOException

Throws:

IOException

parseUriRef

protected int parseUriRef(@Nonnull
 IOParserContext theContext,
 int ch,
 StringBuilder uriRef)
                   throws IOException

Throws:

IOException

parseNodeID

protected int parseNodeID(@Nonnull
 IOParserContext theContext,
 int c,
 @Nonnull
 StringBuilder name)
                   throws IOException

Throws:

IOException

assertLineTerminates

protected int assertLineTerminates(@Nonnull
 IOParserContext theContext)
                            throws IOException

Verifies that there is only whitespace or comments until the end of the line.

Throws:

IOException

skipToEndOfLine

protected int skipToEndOfLine(@Nonnull
 IOParserContext theContext,
 int theChar)
                       throws IOException

Reads characters from reader until the first EOL has been read. The EOL character or -1 is returned.

Throws:

IOException

skipLine

protected int skipLine(int theChar,
 @Nonnull
 IOParserContext theContext)
                throws IOException

Reads characters from reader until the first EOL has been read. The first character after the EOL is returned. In case the end of the character stream has been reached, -1 is returned.

Throws:

IOException

skipWhitespace

protected int skipWhitespace(@Nonnull
 IOParserContext theContext,
 int theChar)
                      throws IOException

Reads characters from reader until it finds a character that is not a space or tab, and returns this last character code point. In case the end of the character stream has been reached, -1 is returned.

Throws:

IOException