org.sindice.siren.util

Class IOUtils

java.lang.Object

org.sindice.siren.util.IOUtils

public class IOUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
IOUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static String	flattenNTriples(String[] values) Flatten a list of triples to n-tuples containing many objects for the same subject/predicate pair.
static String	sortAndFlattenNTriples(String[] values) Sort and flatten a list of triples to n-tuples containing many objects for the same subject/predicate pair.

Methods inherited from class java.lang.Object

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

Constructor Detail

IOUtils

public IOUtils()

Method Detail

flattenNTriples

public static String flattenNTriples(String[] values)

Flatten a list of triples to n-tuples containing many objects for the same subject/predicate pair. Generate one n-tuple per subject/predicate pair.
This is useful for the document-centric indexing approach. The flatten representation is more efficient in term of index size than the plain n-triples approach.

Parameters:

values - The list of n-triples.

Returns:

The n-tuples concatenated.

sortAndFlattenNTriples

public static String sortAndFlattenNTriples(String[] values)

Sort and flatten a list of triples to n-tuples containing many objects for the same subject/predicate pair. Generate one n-tuple per subject/predicate pair. The tuples are ordered by subject/predicate.
This is useful for the document-centric indexing approach. The sorted and flatten representation is generally more efficient in term of index size than the normal flatten approach.

Parameters:

values - The list of n-triples.

Returns:

The n-tuples concatenated.