Method reloadClasses

src/bsh/classpath/ClassManagerImpl.java:358–410

Reloading classes means creating a new classloader and using it whenever we are asked for classes in the appropriate space. For this we use a DiscreteFilesClassLoader

( String [] classNames )

		For this we use a DiscreteFilesClassLoader
	*/
	@Override
	public void reloadClasses( String [] classNames )
		throws ClassPathException
	{
		// validate that it is a class here?

		// init base class loader if there is none...
		if ( baseLoader == null )
			initBaseLoader();

		DiscreteFilesClassLoader.ClassSourceMap map = 
			new DiscreteFilesClassLoader.ClassSourceMap();

		for (int i=0; i< classNames.length; i++) {
			String name = classNames[i];

			// look in baseLoader class path 
			ClassSource classSource = baseClassPath.getClassSource( name );

			// look in user class path 
			if ( classSource == null ) {
				BshClassPath.getUserClassPath().insureInitialized();
				classSource = BshClassPath.getUserClassPath().getClassSource( 
					name );
			}

			// No point in checking boot class path, can't reload those.
			// else we could have used fullClassPath above.
				
			if ( classSource == null )
				throw new ClassPathException("Nothing known about class: "
					+name );

			// JarClassSource is not working... just need to implement it's
			// getCode() method or, if we decide to, allow the BshClassManager
			// to handle it... since it is a URLClassLoader and can handle JARs
			if ( classSource instanceof JarClassSource )
				throw new ClassPathException("Cannot reload class: "+name+
					" from source: "+ classSource );

			map.put( name, classSource );
		}

		// Create classloader for the set of classes
		ClassLoader cl = new DiscreteFilesClassLoader( this, map );

		// map those classes the loader in the overlay map
		Iterator it = map.keySet().iterator();
		while ( it.hasNext() )
			loaderMap.put( (String)it.next(), cl );

		classLoaderChanged();
	}

	/**
		Reload all classes in the specified package: e.g. "com.sun.tools"