Review

finding-13

/mubench/checkouts/jigsaw/205/build/Jigsaw/src/classes/org/w3c/tools/jdbm/jdbmResourceStore.java

loadResource(String, Hashtable)

class jdbmResourceStore {
    public Resource loadResource(String identifier, Hashtable defs) 
	throws InvalidResourceException
    {
	markUsed();
	// Check the resource store memory cache:
	jdbmResource entry = (jdbmResource) loaded.get(identifier) ;
	if (entry != null) {
	    lru.toHead(entry);
	    return entry.getResource() ;
	}
	// Load it from the dbm:
	byte bits[] = getResourceBytes(identifier) ;
	if (bits == null)
	    return null ;
	Resource r = null ;
	// Update default attributes:
	if ( defs == null ) 
	    defs = new Hashtable(5);
	entry = new jdbmResource(r);
	defs.put("store-entry", entry);
	defs.put("resource-store", this) ;
	try {
	    DataInputStream in = (new DataInputStream 
				  (new ByteArrayInputStream(bits))) ;
	    r = (Resource) AttributeHolder.unpickle(in, defs) ;
	} catch (HolderInitException ex) {
	    throw new InvalidResourceException(identifier
					       , ex.getMessage());
	} catch (Exception ex) {
	    // Emit a illegal resource exception
	    throw new InvalidResourceException(identifier
					       , ex.getMessage());
	}
	entry.resource = r;
	lru.toHead(entry);
	loaded.put(identifier, entry);
	if ( loaded.size() >= LOADED_LIMIT )
	    runStoreSweeper();
	return r ;
    }

}