com.epimorphics.util

Class PrefixUtils

java.lang.Object

com.epimorphics.util.PrefixUtils

public class PrefixUtils
extends Object

Collection of random utilities for working with prefixes.

Author:

Dave Reynolds

Constructor Summary

Constructors

Constructor and Description
PrefixUtils()

Method Summary

Modifier and Type	Method and Description
static com.hp.hpl.jena.shared.PrefixMapping	asPrefixes(String... declarations) Utility for easily declaring a prefix mapping in code.
static String	asPrefixString(com.hp.hpl.jena.shared.PrefixMapping pm, boolean turtle)
static String	asSparqlPrefixes(com.hp.hpl.jena.shared.PrefixMapping pm) Return the contents of the given prefix mapping, formatted for prepending onto a SPARQL query.
static String	asTurtlePrefixes(com.hp.hpl.jena.shared.PrefixMapping pm) Return the contents of the given prefix mapping, formatted for prepending onto Turtle content.
static com.hp.hpl.jena.shared.PrefixMapping	commonPrefixes() Return a set of commonly used RDF prefixes.
static com.hp.hpl.jena.shared.PrefixMapping	commonPrefixes(com.hp.hpl.jena.shared.PrefixMapping additional) Return a set of commonly used RDF prefixes.
static com.hp.hpl.jena.shared.PrefixMapping	commonPrefixes(String... additional) Return a set of commonly used RDF prefixes.
static String	expandQuery(String query, com.hp.hpl.jena.shared.PrefixMapping pm) Expand a SPARQL query by prefixing it will all possibly relevant mappings from the given prefix mapping
static com.hp.hpl.jena.shared.PrefixMapping	merge(com.hp.hpl.jena.shared.PrefixMapping pm1, com.hp.hpl.jena.shared.PrefixMapping pm2) Return a read-only merge of two prefix mappings

Methods inherited from class java.lang.Object

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

Constructor Detail

PrefixUtils

public PrefixUtils()

Method Detail

merge

public static com.hp.hpl.jena.shared.PrefixMapping merge(com.hp.hpl.jena.shared.PrefixMapping pm1,
                                                         com.hp.hpl.jena.shared.PrefixMapping pm2)

Return a read-only merge of two prefix mappings

expandQuery

public static String expandQuery(String query,
                                 com.hp.hpl.jena.shared.PrefixMapping pm)

Expand a SPARQL query by prefixing it will all possibly relevant mappings from the given prefix mapping

commonPrefixes

public static com.hp.hpl.jena.shared.PrefixMapping commonPrefixes()

Return a set of commonly used RDF prefixes. This includes the Jena standard mapping (rdf:, owl:, etc) and prefixes for all of the vocabularies defined in epimorphics-lib.

Returns:

A prefix mapping object

See Also:

commonPrefixes(PrefixMapping)

asPrefixes

public static com.hp.hpl.jena.shared.PrefixMapping asPrefixes(String... declarations)

Utility for easily declaring a prefix mapping in code. The arguments are assumed to be pairs of strings, alternating prefix and URI.

Parameters:

declarations - Alternating prefix and URI strings

Returns:

A new PrefixMapping containing only the prefixes declared

Throws:

EpiException - if the declarations are not in pairs

commonPrefixes

public static com.hp.hpl.jena.shared.PrefixMapping commonPrefixes(String... additional)

Return a set of commonly used RDF prefixes. This includes the Jena standard mapping (rdf:, owl:, etc) and prefixes for all of the vocabularies defined in epimorphics-lib. This variant also allows additional prefixes to be declared in code as alternating prefix and uri strings.

Parameters:

additional - Array of String objects denoting, alternately, a prefix and a URI

Returns:

A prefix mapping object

See Also:

commonPrefixes(PrefixMapping)

commonPrefixes

public static com.hp.hpl.jena.shared.PrefixMapping commonPrefixes(com.hp.hpl.jena.shared.PrefixMapping additional)

Return a set of commonly used RDF prefixes. This includes the Jena standard mapping (rdf:, owl:, etc) and prefixes for all of the vocabularies defined in epimorphics-lib.

Parameters:

additional - Optional additional prefixes to merge into the common core, or null

Returns:

A prefix mapping object

asTurtlePrefixes

public static String asTurtlePrefixes(com.hp.hpl.jena.shared.PrefixMapping pm)

Return the contents of the given prefix mapping, formatted for prepending onto Turtle content.

Parameters:

pm -

Returns:

asSparqlPrefixes

public static String asSparqlPrefixes(com.hp.hpl.jena.shared.PrefixMapping pm)

Return the contents of the given prefix mapping, formatted for prepending onto a SPARQL query.

Parameters:

pm -

Returns:

asPrefixString

public static String asPrefixString(com.hp.hpl.jena.shared.PrefixMapping pm,
                                    boolean turtle)