org.apache.jena.hadoop.rdf.io.registry

Interface ReaderFactory

All Known Implementing Classes:

AbstractQuadsOnlyReaderFactory, AbstractReaderFactory, AbstractTriplesOnlyReaderFactory, JsonLDReaderFactory, NQuadsReaderFactory, NTriplesReaderFactory, RdfJsonReaderFactory, RdfXmlReaderFactory, ThriftReaderFactory, TriGReaderFactory, TriXReaderFactory, TurtleReaderFactory

public interface ReaderFactory

Interface for reader factories

Method Summary

Modifier and Type	Method and Description
boolean	canReadQuads() Gets whether this factory can produce readers that are capable of reading quads
boolean	canReadTriples() Gets whether this factory can produce readers that are capable of reading triples
org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,QuadWritable>	createQuadReader() Creates a quad reader
org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,TripleWritable>	createTripleReader() Creates a triples reader
Collection<Lang>	getAlternativeLanguages() Gets the alternative languages this factory can produce readers for
Lang	getPrimaryLanguage() Gets the primary language this factory produces readers for

Method Detail

getPrimaryLanguage

Lang getPrimaryLanguage()

Gets the primary language this factory produces readers for

Returns:

Primary language

getAlternativeLanguages

Collection<Lang> getAlternativeLanguages()

Gets the alternative languages this factory can produce readers for

Returns:

Alternative languages

canReadQuads

boolean canReadQuads()

Gets whether this factory can produce readers that are capable of reading quads

Returns:

True if quads can be read, false if not

canReadTriples

boolean canReadTriples()

Gets whether this factory can produce readers that are capable of reading triples

Returns:

True if triples can be read, false if not

createQuadReader

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,QuadWritable> createQuadReader()
                                                                                                   throws IOException

Creates a quad reader

Returns:

Quad reader

Throws:

IOException - May be thrown if a quad reader cannot be created

createTripleReader

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,TripleWritable> createTripleReader()
                                                                                                       throws IOException

Creates a triples reader

Returns:

Triples reader

Throws:

IOException - May be thrown if a triple reader cannot be created