org.trippi.io
Class CSVTupleWriter

java.lang.Object
  org.trippi.io.RDFWriter
      org.trippi.io.TupleWriter
          org.trippi.io.CSVTupleWriter

public class CSVTupleWriter
extends TupleWriter

Writes tuples as CSV's (comma-separated values), a format common in spreadsheet applications. Headings (the names in the first row) are always quoted. Values are quoted only when they contain commas or quote chars (in which case the quote character is escaped using ""). Newlines in values are replaced with spaces. Note that this form does not preserve datatype or language attributes for RDF literals. UTF-8 encoding is used for extended characters.

Constructor Summary

CSVTupleWriter(java.io.OutputStream out, java.util.Map aliases)

Method Summary

java.lang.String	getValue(org.jrdf.graph.Node node)
int	write(TupleIterator iter) Write the tuples from the iterator, close the iterator, and return the number written.

Methods inherited from class org.trippi.io.RDFWriter

enc

Methods inherited from class java.lang.Object

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

Constructor Detail

CSVTupleWriter

public CSVTupleWriter(java.io.OutputStream out,
                      java.util.Map aliases)
               throws TrippiException

Throws:

TrippiException

Method Detail

write

public int write(TupleIterator iter)
          throws TrippiException

Description copied from class: TupleWriter

Write the tuples from the iterator, close the iterator, and return the number written. Do not close the outputstream.

Specified by:

write in class TupleWriter

Throws:

TrippiException

getValue

public java.lang.String getValue(org.jrdf.graph.Node node)