org.openrdf.rio.rdfxml
Class RDFXMLWriter

java.lang.Object
  org.openrdf.rio.rdfxml.RDFXMLWriter

All Implemented Interfaces:

RDFHandler, RDFWriter

Direct Known Subclasses:

RDFXMLPrettyWriter

public class RDFXMLWriter
extends Object
implements RDFWriter

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

Field Summary

protected boolean	headerWritten
protected Resource	lastWrittenSubject
protected Map<String,String>	namespaceTable
protected Writer	writer
protected boolean	writingStarted

Constructor Summary

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

void	endRDF() Signals the end of the RDF data.
protected void	flushPendingStatements()
RDFFormat	getRDFFormat() Gets the RDF format that this RDFWriter uses.
void	handleComment(String comment) Handles a comment.
void	handleNamespace(String prefix, String name) Handles a namespace declaration/definition.
void	handleStatement(Statement st) Handles a statement.
protected void	setNamespace(String prefix, String name, boolean fixedPrefix)
void	startRDF() Signals the start of the RDF data.
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 java.lang.Object

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

Field Detail

writer

protected Writer writer

namespaceTable

protected Map<String,String> namespaceTable

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()

Description copied from interface: RDFWriter

Gets the RDF format that this RDFWriter uses.

Specified by:

getRDFFormat in interface RDFWriter

startRDF

public void startRDF()

Description copied from interface: RDFHandler

Signals the start of the RDF data. This method is called before any data is reported.

Specified by:

startRDF in interface RDFHandler

writeHeader

protected void writeHeader()
                    throws IOException

Throws:

IOException

endRDF

public void endRDF()
            throws RDFHandlerException

Description copied from interface: RDFHandler

Signals the end of the RDF data. This method is called when all data has been reported.

Specified by:

endRDF in interface RDFHandler

Throws:

RDFHandlerException - If the RDF handler has encountered an unrecoverable error.

handleNamespace

public void handleNamespace(String prefix,
                            String name)

Description copied from interface: RDFHandler

Handles a namespace declaration/definition. A namespace declaration associates a (short) prefix string with the namespace's URI. The prefix for default namespaces, which do not have an associated prefix, are represented as empty strings.

Specified by:

handleNamespace in interface RDFHandler

Parameters:

prefix - The prefix for the namespace, or an empty string in case of a default namespace.

name - The URI that the prefix maps to.

setNamespace

protected void setNamespace(String prefix,
                            String name,
                            boolean fixedPrefix)

handleStatement

public void handleStatement(Statement st)
                     throws RDFHandlerException

Description copied from interface: RDFHandler

Handles a statement.

Specified by:

handleStatement in interface RDFHandler

Parameters:

st - The statement.

Throws:

RDFHandlerException - If the RDF handler has encountered an unrecoverable error.

handleComment

public void handleComment(String comment)
                   throws RDFHandlerException

Description copied from interface: RDFHandler

Handles a comment.

Specified by:

handleComment in interface RDFHandler

Parameters:

comment - The comment.

Throws:

RDFHandlerException - If the RDF handler has encountered an unrecoverable error.

flushPendingStatements

protected void flushPendingStatements()
                               throws IOException

Throws:

IOException

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

Throws:

IOException

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