/*****************************************************************************
* *
* This file is part of the BeanShell Java Scripting distribution. *
* Documentation and updates may be found at http://www.beanshell.org/ *
* *
* Sun Public License Notice: *
* *
* The contents of this file are subject to the Sun Public License Version *
* 1.0 (the "License"); you may not use this file except in compliance with *
* the License. A copy of the License is available at http://www.sun.com *
* *
* The Original Code is BeanShell. The Initial Developer of the Original *
* Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright *
* (C) 2000. All Rights Reserved. *
* *
* GNU Public License Notice: *
* *
* Alternatively, the contents of this file may be used under the terms of *
* the GNU Lesser General Public License (the "LGPL"), in which case the *
* provisions of LGPL are applicable instead of those above. If you wish to *
* allow use of your version of this file only under the terms of the LGPL *
* and not to allow others to use your version of this file under the SPL, *
* indicate your decision by deleting the provisions above and replace *
* them with the notice and other provisions required by the LGPL. If you *
* do not delete the provisions above, a recipient may use your version of *
* this file under either the SPL or the LGPL. *
* *
* Patrick Niemeyer ([email protected]) *
* Author of Learning Java, O'Reilly & Associates *
* http://www.pat.net/~pat/ *
* *
*****************************************************************************/
package bsh.classpath;
import java.io.*;
import java.io.File;
import java.util.*;
import java.awt.*;
import bsh.BshClassManager;
import bsh.classpath.BshClassPath.ClassSource;
import bsh.classpath.BshClassPath.DirClassSource;
import bsh.classpath.BshClassPath.GeneratedClassSource;
/**
A classloader which can load one or more classes from specified sources.
Because the classes are loaded via a single classloader they change as a
group and any versioning cross dependencies can be managed.
*/
public class DiscreteFilesClassLoader extends BshClassLoader
{
/**
Map of class sources which also implies our coverage space.
*/
ClassSourceMap map;
public static class ClassSourceMap extends HashMap
{
public void put( String name, ClassSource source ) {
super.put( name, source );
}
public ClassSource get( String name ) {
return (ClassSource)super.get( name );
}
}
public DiscreteFilesClassLoader(
BshClassManager classManager, ClassSourceMap map )
{
super( classManager );
this.map = map;
}
/**
*/
public Class findClass( String name ) throws ClassNotFoundException
{
// Load it if it's one of our classes
ClassSource source = map.get( name );
if ( source != null )
{
byte [] code = source.getCode( name );
return defineClass( name, code, 0, code.length );
} else
// Let superclass BshClassLoader (URLClassLoader) findClass try
// to find the class...
return super.findClass( name );
}
public String toString() {
return super.toString() + "for files: "+map;
}
}
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