Module org.apache.jena.arq

Package org.apache.jena.sparql.graph

Class PrefixMappingBase

java.lang.Object

org.apache.jena.sparql.graph.PrefixMappingBase

All Implemented Interfaces:

PrefixMapping

Direct Known Subclasses:

PrefixMappingAdapter, PrefixMappingMem, PrefixMappingSink

public abstract class PrefixMappingBase
extends Object
implements PrefixMapping

Framework for implementing PrefixMapping. It is stateless (unlike PrefixMappingImpl) and implements the contract of PrefixMapping, providing the key algorithm and delegating storage to the subclasses.

Reverse mapping, looking up a URI to find a prefix is complex because there may be several possibilities. Applications should not rely on every implementation being consistent when there is a choice of which prefix to use to shorten a URI.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.jena.shared.PrefixMapping

PrefixMapping.Factory, PrefixMapping.IllegalPrefixException, PrefixMapping.JenaLockedException

Field Summary

Fields inherited from interface org.apache.jena.shared.PrefixMapping

Extended, Standard

Method Summary

Modifier and Type	Method	Description
static void	checkLegalPrefix(String prefix)	Checks that a prefix is "legal" - it must be a valid XML NCName or "".
PrefixMapping	clearNsPrefixMap()
String	expandPrefix(String prefixed)
Map<String,String>	getNsPrefixMap()
String	getNsPrefixURI(String prefix)
String	getNsURIPrefix(String uri)
boolean	hasNoMappings()
PrefixMapping	lock()
int	numPrefixes()
String	qnameFor(String uri)
PrefixMapping	removeNsPrefix(String prefix)
boolean	samePrefixMappingAs(PrefixMapping other)
PrefixMapping	setNsPrefix(String prefix, String uri)
PrefixMapping	setNsPrefixes(Map<String,String> map)
PrefixMapping	setNsPrefixes(PrefixMapping pmap)
String	shortForm(String uri)
String	toString()
PrefixMapping	withDefaultMappings(PrefixMapping pmap)

Methods inherited from class java.lang.Object

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

Method Details

setNsPrefix

public PrefixMapping setNsPrefix(String prefix,
 String uri)

Specified by:

setNsPrefix in interface PrefixMapping

removeNsPrefix

public PrefixMapping removeNsPrefix(String prefix)

Specified by:

removeNsPrefix in interface PrefixMapping

clearNsPrefixMap

public PrefixMapping clearNsPrefixMap()

Specified by:

clearNsPrefixMap in interface PrefixMapping

checkLegalPrefix

public static void checkLegalPrefix(String prefix)

Checks that a prefix is "legal" - it must be a valid XML NCName or "". XML rules for RDF/XML output.

This is a recurring user question - why does Resource.getNamespace, Resource.getLocalname not abbreviate when it is legal Turtle.

Answer - legacy for RDF/XML.

See also qnameFor(java.lang.String).

setNsPrefixes

public PrefixMapping setNsPrefixes(PrefixMapping pmap)

Specified by:

setNsPrefixes in interface PrefixMapping

setNsPrefixes

public PrefixMapping setNsPrefixes(Map<String,String> map)

Specified by:

setNsPrefixes in interface PrefixMapping

withDefaultMappings

public PrefixMapping withDefaultMappings(PrefixMapping pmap)

Specified by:

withDefaultMappings in interface PrefixMapping

getNsPrefixURI

public String getNsPrefixURI(String prefix)

Specified by:

getNsPrefixURI in interface PrefixMapping

getNsURIPrefix

public String getNsURIPrefix(String uri)

Specified by:

getNsURIPrefix in interface PrefixMapping

getNsPrefixMap

public Map<String,String> getNsPrefixMap()

Specified by:

getNsPrefixMap in interface PrefixMapping

expandPrefix

public String expandPrefix(String prefixed)

Specified by:

expandPrefix in interface PrefixMapping

qnameFor

public String qnameFor(String uri)

Specified by:

qnameFor in interface PrefixMapping

shortForm

public String shortForm(String uri)

Specified by:

shortForm in interface PrefixMapping

samePrefixMappingAs

public boolean samePrefixMappingAs(PrefixMapping other)

Specified by:

samePrefixMappingAs in interface PrefixMapping

lock

public PrefixMapping lock()

Specified by:

lock in interface PrefixMapping

hasNoMappings

public boolean hasNoMappings()

Specified by:

hasNoMappings in interface PrefixMapping

numPrefixes

public int numPrefixes()

Specified by:

numPrefixes in interface PrefixMapping

toString

public String toString()

Overrides:

toString in class Object