/*
(c) Copyright 2006, 2007, 2008 Hewlett-Packard Development Company, LP
All rights reserved - see end of file.
$Id: FileLoader.java,v 1.5 2008/11/05 14:42:27 chris-dollin Exp $
*/
package com.hp.hpl.jena.eyeball.loaders;
import com.hp.hpl.jena.assembler.Assembler;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.shared.NotFoundException;
import com.hp.hpl.jena.util.FileManager;
/**
A FileLoader wraps a FileManager, providing only the load(String) method,
and intercepting names of the form "via:ROOT@FILE" to load the model
described by ROOT in the assembly file FILE.
*/
public class FileLoader implements Loader
{
protected final FileManager fm;
/**
Initialise this FileLoader with the specified FileManager.
*/
public FileLoader( FileManager fm )
{ this.fm = fm; }
/**
Initialise this FileLoader with the default file manager, FileManager.get().
*/
public FileLoader()
{ this( FileManager.get() ); }
/**
Answer the model returned by our FileManager.
*/
public Model load( String s )
{ return s.startsWith( "ja:" ) ? loadVia( s.substring( 3 ) ) : fm.loadModel( s ); }
private Model loadVia( String rootAtFile )
{
int at = rootAtFile.indexOf( '@' );
String rootString = rootAtFile.substring( 0, at ), fileName = rootAtFile.substring( at + 1 );
Model assembly = load( fileName );
if (assembly == null) throw new NotFoundException( fileName );
Resource root = assembly.createResource( assembly.expandPrefix( rootString ) );
return Assembler.general.openModel( root );
}
/**
Answer the FileManager this FileLoader uses to locate and load files.
*/
public FileManager getFileManager()
{ return fm; }
}
/*
* (c) Copyright 2006, 2007, 2008 Hewlett-Packard Development Company, LP
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/