org.mindswap.pellet
Class KBLoader

java.lang.Object
  extended by org.mindswap.pellet.KBLoader
Direct Known Subclasses:
JenaLoader, KRSSLoader, OWLAPILoader, OWLAPILoader

public abstract class KBLoader
extends java.lang.Object

A generic class that allows the creation of Pellet KnowledgeBase instances and load ontologies. The actual parsing and loading operations is implemented by the concrete extensions of this class where each implementation uses a different parser and loader, e.g. Jena or OWLAPI.

Loading to a KnowledgeBase instance is typically a two-phase process. First the ontology is parsed into a representation supported by the loader, e.g. Jena Model or OWLAPI Ontology. Then this object is processed by Pellet and loaded to the KnowledgeBase class.

This class provides fined-grained control over how parsing and loading is done along with a convenience function to do everything at once. Concrete implementations of this class provides access to the ontology object used by the underlying loader.

Author:
Evren Sirin

Field Summary
static java.util.logging.Logger log
           
 
Constructor Summary
KBLoader()
           
 
Method Summary
abstract  void clear()
          Resets the loader and clear any previously loaded ontologies.
 KnowledgeBase createKB(java.lang.String... fileNameList)
          Convenience function to clear, parse, load, and getKB().
abstract  KnowledgeBase getKB()
          Returns the KB instance associated with the loader.
abstract  void load()
          Load any previously parsed ontologies
 void parse(java.lang.String... fileNames)
          Parse one or more files to the internal representation supported by this loader.
abstract  void setIgnoreImports(boolean valueAsBoolean)
          Instruct loader to respect or ignore imports.
 java.lang.String toString()
           
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

log

public static final java.util.logging.Logger log
Constructor Detail

KBLoader

public KBLoader()
Method Detail

clear

public abstract void clear()
Resets the loader and clear any previously loaded ontologies.


createKB

public KnowledgeBase createKB(java.lang.String... fileNameList)
Convenience function to clear, parse, load, and getKB(). Note: this method previously accepted a list of regular expressions instead of file URIs. This behavior has been changed as of 2.0.0-rc7.

Parameters:
fileNameList - list of file URIs
Returns:
KnowledgeBase instance with the given ontologies loaded
See Also:
FileUtils.getFileURIs(String...)

getKB

public abstract KnowledgeBase getKB()
Returns the KB instance associated with the loader. The function load() should be called beforehand.

Returns:
KnowledgeBase instance

load

public abstract void load()
Load any previously parsed ontologies


parse

public void parse(java.lang.String... fileNames)
Parse one or more files to the internal representation supported by this loader. Note: this method previously accepted a list of regular expressions instead of file URIs. This behavior has been changed as of 2.0.0-rc7.

Parameters:
fileNameList - list of file URIs
See Also:
FileUtils.getFileURIs(String...)

setIgnoreImports

public abstract void setIgnoreImports(boolean valueAsBoolean)
Instruct loader to respect or ignore imports.

Parameters:
valueAsBoolean -

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object


Copyright © 2004 Evren Sirin. All Rights Reserved.