com.hp.hpl.jena.graph.compose
Class PolyadicPrefixMappingImpl

java.lang.Object
  com.hp.hpl.jena.shared.impl.PrefixMappingImpl
      com.hp.hpl.jena.graph.compose.PolyadicPrefixMappingImpl

All Implemented Interfaces:

PrefixMapping

public class PolyadicPrefixMappingImpl
extends com.hp.hpl.jena.shared.impl.PrefixMappingImpl
implements PrefixMapping

Nested Class Summary

Nested classes/interfaces inherited from interface com.hp.hpl.jena.shared.PrefixMapping

PrefixMapping.Factory, PrefixMapping.IllegalPrefixException, PrefixMapping.JenaLockedException

Field Summary

Fields inherited from interface com.hp.hpl.jena.shared.PrefixMapping

Extended, Standard

Constructor Summary

PolyadicPrefixMappingImpl(Polyadic p)

Method Summary

String	expandPrefix(String prefixed) Expand a prefixed URI.
Map<String,String>	getNsPrefixMap() Return a copy of the internal mapping from names to URI strings.
String	getNsPrefixURI(String prefix) Get the URI bound to a specific prefix, null if there isn't one.
String	getNsURIPrefix(String uri) Answer the prefix for the given URI, or null if there isn't one.
String	qnameFor(String uri) Answer a qname with the expansion of the given uri, or null if no such qname can be constructed using the mapping's prefixes.
PrefixMapping	removeNsPrefix(String prefix) Remove any existing maplet with the given prefix name and answer this mapping.
PrefixMapping	setNsPrefix(String prefix, String uri) Specify the prefix name for a URI prefix string.
PrefixMapping	setNsPrefixes(Map<String,String> other) Add the bindings in the map to our own.
PrefixMapping	setNsPrefixes(PrefixMapping other) Add the bindings of other to our own.
String	shortForm(String uri) Compress the URI using the prefix mapping.
String	toString() Answer a readable (we hope) representation of this prefix mapping.

Methods inherited from class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

isNiceURI, lock, samePrefixMappingAs, withDefaultMappings

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.hp.hpl.jena.shared.PrefixMapping

lock, samePrefixMappingAs, withDefaultMappings

Constructor Detail

PolyadicPrefixMappingImpl

public PolyadicPrefixMappingImpl(Polyadic p)

Method Detail

setNsPrefix

public PrefixMapping setNsPrefix(String prefix,
                                 String uri)

Description copied from interface: PrefixMapping

Specify the prefix name for a URI prefix string. Any existing use of that prefix name is overwritten. The result is this same prefixMapping. (The earlier restriction that adding second prefix for the same URI caused the earlier binding to be deleted has been withdrawn.)

A prefix name must be a valid NCName, or the empty string. The empty string is reserved to mean "the default namespace".

Need not check the RFC2396 validity of the URI. Bad URIs are either silently ignored or behave as if they were good. The earlier restriction that the URI should end with a non-NCName character has been removed.

Note, in particular, that the a prefix mapping can only be used if it includes the URI up to any '#' character because '#' is not legal in the local part of an NCName.

Specified by:

setNsPrefix in interface PrefixMapping

Overrides:

setNsPrefix in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

prefix - the string to be used for the prefix.

uri - the URI prefix to be named

Returns:

this PrefixMapping

removeNsPrefix

public PrefixMapping removeNsPrefix(String prefix)

Description copied from interface: PrefixMapping

Remove any existing maplet with the given prefix name and answer this mapping. If the prefix is the empty string, then this removes the default namespace. If the prefix is not a legal prefix string, or is not present in the mapping, nothing happens.

The reverse URI-to-prefix mapping is updated, but if there are multiple prefixes for the removed URI it is unspecified which of them will be chosen.

Specified by:

removeNsPrefix in interface PrefixMapping

Overrides:

removeNsPrefix in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

prefix - the prefix string to remove

Returns:

this PrefixMapping

setNsPrefixes

public PrefixMapping setNsPrefixes(PrefixMapping other)

Add the bindings of other to our own. We defer to the general case because we have to ensure the URIs are checked.

Specified by:

setNsPrefixes in interface PrefixMapping

Overrides:

setNsPrefixes in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

other - the PrefixMapping whose bindings we are to add to this.

Returns:

this PrefixMapping

setNsPrefixes

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

Add the bindings in the map to our own. This will fail with a ClassCastException if any key or value is not a String; we make no guarantees about order or completeness if this happens. It will fail with an IllegalPrefixException if any prefix is illegal; similar provisos apply.

Specified by:

setNsPrefixes in interface PrefixMapping

Overrides:

setNsPrefixes in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

other - the Map whose bindings we are to add to this.

Returns:

this PrefixMapping

getNsPrefixURI

public String getNsPrefixURI(String prefix)

Description copied from interface: PrefixMapping

Get the URI bound to a specific prefix, null if there isn't one.

Specified by:

getNsPrefixURI in interface PrefixMapping

Overrides:

getNsPrefixURI in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

prefix - the prefix name to be looked up

Returns:

the most recent URI bound to that prefix name, null if none

getNsPrefixMap

public Map<String,String> getNsPrefixMap()

Description copied from interface: PrefixMapping

Return a copy of the internal mapping from names to URI strings. Updating this copy will have no effect on the PrefixMap.

Specified by:

getNsPrefixMap in interface PrefixMapping

Overrides:

getNsPrefixMap in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Returns:

a copy of the internal String -> String mapping

getNsURIPrefix

public String getNsURIPrefix(String uri)

Description copied from interface: PrefixMapping

Answer the prefix for the given URI, or null if there isn't one. If there is more than one, one of them will be picked. If possible, it will be the most recently added prefix. (The cases where it's not possible is when a binding has been removed.)

Specified by:

getNsURIPrefix in interface PrefixMapping

Overrides:

getNsURIPrefix in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

uri - the uri whose prefix is to be found

Returns:

the prefix mapped to that uri, or null if there isn't one

expandPrefix

public String expandPrefix(String prefixed)

Expand a prefixed URI. There's an assumption that any URI of the form Head:Tail is subject to mapping if Head is in the prefix mapping. So, if someone takes it into their heads to define eg "http" or "ftp" we have problems.

Specified by:

expandPrefix in interface PrefixMapping

Overrides:

expandPrefix in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

prefixed - a QName or URI

Returns:

the expanded string if possible, otherwise the original string

toString

public String toString()

Answer a readable (we hope) representation of this prefix mapping.

Overrides:

toString in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

shortForm

public String shortForm(String uri)

Compress the URI using the prefix mapping. This version of the code looks through all the maplets and checks each candidate prefix URI for being a leading substring of the argument URI. There's probably a much more efficient algorithm available, preprocessing the prefix strings into some kind of search table, but for the moment we don't need it.

Specified by:

shortForm in interface PrefixMapping

Overrides:

shortForm in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl

Parameters:

uri - the URI string to try and prefix-compress

Returns:

the shortened form if possible, otherwise the unchanged argument

qnameFor

public String qnameFor(String uri)

Description copied from interface: PrefixMapping

Answer a qname with the expansion of the given uri, or null if no such qname can be constructed using the mapping's prefixes.

Specified by:

qnameFor in interface PrefixMapping

Overrides:

qnameFor in class com.hp.hpl.jena.shared.impl.PrefixMappingImpl