Module org.apache.jena.arq

Package org.apache.jena.riot.system

Class Prefixes

java.lang.Object

org.apache.jena.riot.system.Prefixes

public class Prefixes
extends Object

Functions related to PrefixMap.

See Also:

• PrefixMapFactory

Field Summary

Fields

Modifier and Type	Field	Description
static final String	datasetPrefixSet	Name for dataset-wide prefixes.
static final String	dftGraphPrefixSet	Special name for default graph prefixes.
static org.apache.jena.graph.Node	nodeDataset	Name for dataset prefixes.
static org.apache.jena.graph.Node	nodeDefaultGraph	Name assigned to the default graph.

Constructor Summary

Constructors

Constructor	Description
Prefixes()

Method Summary

Modifier and Type	Method	Description
static PrefixMap	adapt(org.apache.jena.graph.Graph graph)	Provide, via an adapter if necessary, the PrefixMap for a Graph.
static org.apache.jena.shared.PrefixMapping	adapt(PrefixMap prefixMap)	Apply a wrapper to a PrefixMap to provide the PrefixMapping API.
static PrefixMap	adapt(org.apache.jena.shared.PrefixMapping prefixMapping)	Apply a wrapper to a PrefixMapping to provide the PrefixMap API.
static String	findByURI(PrefixMap pmap, String uriStr)	Reverse lookup of URI to a prefix.
static String	prefix(String prefix)	Canonical prefix - remove a trailing ":".
static String	toString(PrefixMap prefixMap)	Calculate a printable multi-line string.

Methods inherited from class java.lang.Object

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

Field Details

dftGraphPrefixSet

public static final String dftGraphPrefixSet

Special name for default graph prefixes. This is different to the datasetPrefixSet. Only used by (TDB1) GraphTxnTDB_Prefixes and (TDB2) GraphViewSwitchable_Prefixes which have separated dataset/default graph prefixes. For legacy migration reasons, TDB1 uses "" and TDB2 uses defaultGraphNodeGenerated for the dataset prefix set. See TDB1 ) TDB2 StoragePrefixesView

See Also:

• Constant Field Values

datasetPrefixSet

public static final String datasetPrefixSet

Name for dataset-wide prefixes.

See Also:

• Constant Field Values

nodeDefaultGraph

public static org.apache.jena.graph.Node nodeDefaultGraph

Name assigned to the default graph.

nodeDataset

public static org.apache.jena.graph.Node nodeDataset

Name for dataset prefixes.

Constructor Details

Prefixes

public Prefixes()

Method Details

prefix

public static String prefix(String prefix)

Canonical prefix - remove a trailing ":". The return is not null.

findByURI

public static String findByURI(PrefixMap pmap,
 String uriStr)

Reverse lookup of URI to a prefix. General implementation by scanning the PrefixMap. Returns a prefix if found or null. If several prefixes for the same URI, returns one at random.

adapt

public static PrefixMap adapt(org.apache.jena.graph.Graph graph)

Provide, via an adapter if necessary, the PrefixMap for a Graph.

adapt

public static org.apache.jena.shared.PrefixMapping adapt(PrefixMap prefixMap)

Apply a wrapper to a PrefixMap to provide the PrefixMapping API.

adapt

public static PrefixMap adapt(org.apache.jena.shared.PrefixMapping prefixMapping)

Apply a wrapper to a PrefixMapping to provide the PrefixMap API.

toString

public static String toString(PrefixMap prefixMap)

Calculate a printable multi-line string.