Module org.apache.jena.arq

Package org.apache.jena.riot.system

Class PrefixLib

java.lang.Object

org.apache.jena.riot.system.PrefixLib

public class PrefixLib
extends Object

Algorithms over PrefixMap to abbreviate and expand

Constructor Summary

Constructors

Constructor	Description
PrefixLib()

Method Summary

Modifier and Type	Method	Description
static org.apache.jena.atlas.lib.Pair<String,String>	abbrev(Map<String,String> prefixesMap, String uriStr, boolean turtleSafeLocalPart)	Abbreviate a uriStr, return the prefix and local parts, using a Map of prefix string to URI string.
static org.apache.jena.atlas.lib.Pair<String,String>	abbrev(PrefixMap prefixes, String uriStr)	Abbreviate a uriStr, return the prefix and local parts.
static String	abbreviate(PrefixMap prefixes, String uriStr)	Abbreviate a uriStr, giving a string as a short form.
static org.apache.jena.graph.Node	canonicalGraphName(org.apache.jena.graph.Node graphName)	Canonical name for graphs
static String	canonicalPrefix(String prefix)	Remove ":" from a prefix if necessary to make it canonical.
static String	expand(PrefixMap prefixes, String prefixedName)	Expand a prefixedName which must include a ':'
static String	expand(PrefixMap prefixes, String prefix, String localName)	Expand a prefix, local name pair.
static boolean	isSafeLocalPart(String localName)	Is a local name safe?

Methods inherited from class java.lang.Object

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

Constructor Details

PrefixLib

public PrefixLib()

Method Details

canonicalPrefix

public static String canonicalPrefix(String prefix)

Remove ":" from a prefix if necessary to make it canonical.

Parameters:

prefix -

Returns:

prefix, without colon.

canonicalGraphName

public static org.apache.jena.graph.Node canonicalGraphName(org.apache.jena.graph.Node graphName)

Canonical name for graphs

abbreviate

public static String abbreviate(PrefixMap prefixes,
 String uriStr)

Abbreviate a uriStr, giving a string as a short form. If not possible return null. This does not guarantee that the result is suitable for all RDF syntaxes. Further checking for the rules of a particular syntax are necessary.

abbrev

public static org.apache.jena.atlas.lib.Pair<String,String> abbrev(PrefixMap prefixes,
 String uriStr)

Abbreviate a uriStr, return the prefix and local parts. This does not guarantee that the result is suitable for all RDF syntaxes.

abbrev

public static org.apache.jena.atlas.lib.Pair<String,String> abbrev(Map<String,String> prefixesMap,
 String uriStr,
 boolean turtleSafeLocalPart)

Abbreviate a uriStr, return the prefix and local parts, using a Map of prefix string to URI string. This does not guarantee that the result is suitable for all RDF syntaxes. In addition, perform a fast check for legal turtle local parts using isSafeLocalPart(java.lang.String). This covers the majority of real work cases and allows the code to find a probably-legal abbrev pair if an illegal one is found. (In practice, illegal local names arise only when one prefix URI is a substring of another.)

expand

public static String expand(PrefixMap prefixes,
 String prefixedName)

Expand a prefixedName which must include a ':'

expand

public static String expand(PrefixMap prefixes,
 String prefix,
 String localName)

Expand a prefix, local name pair.

isSafeLocalPart

public static boolean isSafeLocalPart(String localName)

Is a local name safe? This is a partial, fast check for Turtle-like local names.

Parameters:

localName - Local name

Returns:

True if safe, false otherwise