org.apache.jena.riot

Class RDFWriter

java.lang.Object

org.apache.jena.riot.RDFWriter

public class RDFWriter
extends Object

An RDFWriter is a process that will output triples or quads in an RDF syntax. RDFWriterBuilder provides the means to setup the writer.

The process is

    DatasetGraph dsg = ...
    RDFWriter writer = RDFWriter.create().source(dsg).lang(Lang.TTL).build();
    OutputStream out = 
    writer.output(out);
 

or using abbreviated forms:

    RDFWriter.create().source(dsg).lang(Lang.TTL).output(out);
 

See Also:

WriterDatasetRIOT, WriterGraphRIOT

Method Summary

Modifier and Type	Method and Description
String	asString() Write and return as a string.
static RDFWriterBuilder	create() Create an RDFWriterBuilder.
void	output(OutputStream output) Write the source to the OutputStream.
void	output(String filename) Write the source to the file.
void	output(Writer javaWriter) Deprecated. Using Java Writers risk corrupting the character set. Only UTF-8 is safe.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static RDFWriterBuilder create()

Create an RDFWriterBuilder.

Often used in a pattern such as:

    RDFWriter.create()
        .lang(Lang.TTL)
        .source(graph)
        .output(System.out);
 

asString

public String asString()

Write and return as a string.

The Lang or RDFFormat must have been set.

output

public void output(OutputStream output)

Write the source to the OutputStream.

The Lang or RDFFormat must have been set.

Parameters:

output -

output

@Deprecated
public void output(Writer javaWriter)

Deprecated. Using Java Writers risk corrupting the character set. Only UTF-8 is safe.

Write the source to the Java Writer.

The Lang or RDFFormat must have been set.

Parameters:

javaWriter -

output

public void output(String filename)

Write the source to the file.

If neither Lang nor RDFFormat are set, an attempt to guess an RDF Syntax is made from the file extension.

Output to "-" goes to stdout.

Parameters:

filename -