org.topbraid.core.io
Class JenaFileGraphStore

java.lang.Object
  org.topbraid.core.io.AbstractGraphStore
      org.topbraid.core.io.JenaFileGraphStore

All Implemented Interfaces:

IGraphStore

Direct Known Subclasses:

N3GraphStore, NTripleGraphStore

public class JenaFileGraphStore
extends AbstractGraphStore

Constructor Summary

JenaFileGraphStore(java.lang.String lang)

Method Summary

void	close(org.eclipse.core.resources.IFile file) Closes any resources allocated by a given file.
protected void	doSave(java.io.OutputStream os, com.hp.hpl.jena.rdf.model.Model model, java.lang.String baseURI)
java.net.URI	getBaseURI(org.eclipse.core.resources.IFile file, java.util.Set<java.net.URI> imports) Gets the declared base URI and the owl:imports of a given file.
ImageMetadata	getImageMetadata() Gets a (base) image to display files of this type in the Navigator (and potentially elsewhere).
boolean	isReadOnly(org.eclipse.core.resources.IFile file) Checks if a given IFile is read-only.
com.hp.hpl.jena.graph.Graph	load(org.eclipse.core.resources.IFile file, org.eclipse.core.runtime.IProgressMonitor monitor) Creates a new Jena Graph for a given IFile.
void	save(org.eclipse.core.resources.IFile file, com.hp.hpl.jena.graph.Graph graph, java.lang.String baseURI)
boolean	saveAs(org.eclipse.core.resources.IFile file, com.hp.hpl.jena.graph.Graph graph, java.lang.String baseURI)

Methods inherited from class org.topbraid.core.io.AbstractGraphStore

getFileExtensions, loadN3, loadProperties

Methods inherited from class java.lang.Object

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

Constructor Detail

JenaFileGraphStore

public JenaFileGraphStore(java.lang.String lang)

Method Detail

close

public void close(org.eclipse.core.resources.IFile file)
           throws java.lang.Exception

Description copied from interface: IGraphStore

Closes any resources allocated by a given file.

Parameters:

file - the file representing the store

Throws:

java.lang.Exception

doSave

protected void doSave(java.io.OutputStream os,
                      com.hp.hpl.jena.rdf.model.Model model,
                      java.lang.String baseURI)

getBaseURI

public java.net.URI getBaseURI(org.eclipse.core.resources.IFile file,
                               java.util.Set<java.net.URI> imports)
                        throws java.lang.Exception

Description copied from interface: IGraphStore

Gets the declared base URI and the owl:imports of a given file. For example, in the standard file back-end this would use file introspection to check the declared xml:base and the owl:imports of the owl:Ontology.

Parameters:

file - the file to get the base URI of

imports - an initially empty Set that will contain imported URIs

Returns:

the base URI

Throws:

java.lang.Exception

getImageMetadata

public ImageMetadata getImageMetadata()

Description copied from interface: IGraphStore

Gets a (base) image to display files of this type in the Navigator (and potentially elsewhere).

Returns:

the IImage or null to use the default image

isReadOnly

public boolean isReadOnly(org.eclipse.core.resources.IFile file)

Description copied from interface: IGraphStore

Checks if a given IFile is read-only. This is typically used for graph stores that just provide a view on some external data source, such as a D2RQ database (here: all files would be read-only), or for stores like the Sesame remote back-end where selected files may be read-only.

Returns:

true if this is a read-only store

load

public com.hp.hpl.jena.graph.Graph load(org.eclipse.core.resources.IFile file,
                                        org.eclipse.core.runtime.IProgressMonitor monitor)
                                 throws java.lang.Exception

Description copied from interface: IGraphStore

Creates a new Jena Graph for a given IFile. This method is only called after the system has determined whether this engine is actually responsible for the file's extension.

Parameters:

file - the file to load

monitor - the monitor for status reports or null

Returns:

a new Graph

Throws:

java.lang.Exception - if something went wrong

save

public void save(org.eclipse.core.resources.IFile file,
                 com.hp.hpl.jena.graph.Graph graph,
                 java.lang.String baseURI)
          throws java.io.IOException

Throws:

java.io.IOException

saveAs

public boolean saveAs(org.eclipse.core.resources.IFile file,
                      com.hp.hpl.jena.graph.Graph graph,
                      java.lang.String baseURI)
               throws java.lang.Exception

Returns:

true if the new IFile shall be the editor's input

Throws:

java.lang.Exception