org.openrdf.rio.rdfxml

Class RDFXMLWriter

java.lang.Object

org.openrdf.rio.helpers.RDFWriterBase

org.openrdf.rio.rdfxml.RDFXMLWriter

All Implemented Interfaces:

RDFHandler, RDFWriter

Direct Known Subclasses:

RDFXMLPrettyWriter

public class RDFXMLWriter
extends RDFWriterBase
implements RDFWriter

An implementation of the RDFWriter interface that writes RDF documents in XML-serialized RDF format.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	defaultNamespace
protected boolean	headerWritten
protected Resource	lastWrittenSubject
protected Writer	writer
protected boolean	writingStarted

Fields inherited from class org.openrdf.rio.helpers.RDFWriterBase

namespaceTable

Constructor Summary

Constructors

Constructor and Description
RDFXMLWriter(OutputStream out) Creates a new RDFXMLWriter that will write to the supplied OutputStream.
RDFXMLWriter(Writer writer) Creates a new RDFXMLWriter that will write to the supplied Writer.

Method Summary

Modifier and Type	Method and Description
void	endRDF()
protected void	flushPendingStatements()
RDFFormat	getRDFFormat()
protected String	getValidNodeId(BNode bNode) Create a syntactically valid node id from the supplied blank node id.
void	handleComment(String comment)
void	handleNamespace(String prefix, String name)
void	handleStatement(Statement st)
protected void	setNamespace(String prefix, String name)
void	startRDF()
protected void	writeAttribute(String attName, String value)
protected void	writeAttribute(String namespace, String attName, String value)
protected void	writeCharacterData(String chars)
protected void	writeEndOfEmptyTag()
protected void	writeEndOfStartTag()
protected void	writeEndTag(String namespace, String localName)
protected void	writeHeader()
protected void	writeIndent()
protected void	writeNewLine()
protected void	writeStartOfStartTag(String namespace, String localName)

Methods inherited from class org.openrdf.rio.helpers.RDFWriterBase

getSupportedSettings, getWriterConfig, setWriterConfig

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.rio.RDFWriter

getSupportedSettings, getWriterConfig, setWriterConfig

Field Detail

writer

protected Writer writer

defaultNamespace

protected String defaultNamespace

writingStarted

protected boolean writingStarted

headerWritten

protected boolean headerWritten

lastWrittenSubject

protected Resource lastWrittenSubject

Constructor Detail

RDFXMLWriter

public RDFXMLWriter(OutputStream out)

Creates a new RDFXMLWriter that will write to the supplied OutputStream.

Parameters:

out - The OutputStream to write the RDF/XML document to.

RDFXMLWriter

public RDFXMLWriter(Writer writer)

Creates a new RDFXMLWriter that will write to the supplied Writer.

Parameters:

writer - The Writer to write the RDF/XML document to.

Method Detail

getRDFFormat

public RDFFormat getRDFFormat()

Specified by:

getRDFFormat in interface RDFWriter

startRDF

public void startRDF()
              throws RDFHandlerException

Specified by:

startRDF in interface RDFHandler

Throws:

RDFHandlerException

writeHeader

protected void writeHeader()
                    throws IOException

Throws:

IOException

endRDF

public void endRDF()
            throws RDFHandlerException

Specified by:

endRDF in interface RDFHandler

Throws:

RDFHandlerException

handleNamespace

public void handleNamespace(String prefix,
                            String name)

Specified by:

handleNamespace in interface RDFHandler

Overrides:

handleNamespace in class RDFWriterBase

setNamespace

protected void setNamespace(String prefix,
                            String name)

handleStatement

public void handleStatement(Statement st)
                     throws RDFHandlerException

Specified by:

handleStatement in interface RDFHandler

Throws:

RDFHandlerException

handleComment

public void handleComment(String comment)
                   throws RDFHandlerException

Specified by:

handleComment in interface RDFHandler

Throws:

RDFHandlerException

flushPendingStatements

protected void flushPendingStatements()
                               throws IOException,
                                      RDFHandlerException

Throws:

IOException

RDFHandlerException

writeStartOfStartTag

protected void writeStartOfStartTag(String namespace,
                                    String localName)
                             throws IOException

Throws:

IOException

writeAttribute

protected void writeAttribute(String attName,
                              String value)
                       throws IOException

Throws:

IOException

writeAttribute

protected void writeAttribute(String namespace,
                              String attName,
                              String value)
                       throws IOException,
                              RDFHandlerException

Throws:

IOException

RDFHandlerException

writeEndOfStartTag

protected void writeEndOfStartTag()
                           throws IOException

Throws:

IOException

writeEndOfEmptyTag

protected void writeEndOfEmptyTag()
                           throws IOException

Throws:

IOException

writeEndTag

protected void writeEndTag(String namespace,
                           String localName)
                    throws IOException

Throws:

IOException

writeCharacterData

protected void writeCharacterData(String chars)
                           throws IOException

Throws:

IOException

writeIndent

protected void writeIndent()
                    throws IOException

Throws:

IOException

writeNewLine

protected void writeNewLine()
                     throws IOException

Throws:

IOException

getValidNodeId

protected String getValidNodeId(BNode bNode)
                         throws IOException

Create a syntactically valid node id from the supplied blank node id. This is necessary because RDF/XML syntax enforces the blank node id is a valid NCName.

Parameters:

bNode - a blank node identifier

Returns:

the blank node identifier converted to a form that is a valid NCName.

Throws:

IOException

See Also:

section 7.2.34 of the RDF/XML Syntax specification