reflectionclassquery.java

来自「Java的面向对象数据库系统的源代码」· Java 代码 · 共 45 行

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
//
// $Id$
package org.ozoneDB.tools.OPP.srcgen.query;

import org.ozoneDB.tools.OPP.srcgen.ClassQuery;

/**
 * User: Jocke
 * Date: 2004-jan-02
 * Time: 00:52:24
 */
public class ReflectionClassQuery implements ClassQuery {
    public boolean isAssignable(String itf, String from) throws ClassNotFoundException {
        Class itfClass = Class.forName(itf);
        Class fromClass = Class.forName(from);
        return itfClass.isAssignableFrom(fromClass);
    }

    public String[] getInterfaces(String className) throws ClassNotFoundException {
        Class clazz = Class.forName(className);
        Class interfaces [] = clazz.getInterfaces();
        return classesToStrings(interfaces);
    }

    public boolean isInterface(String className) throws ClassNotFoundException {
        Class clazz = Class.forName(className);
        return clazz.isInterface();
    }


    private String[] classesToStrings(Class classes[]) {
        String names [] = new String[classes.length];
        for (int i = 0; i < classes.length; i++) {
            Class aClass = classes[i];
            names[i] = aClass.getName();
        }
        return names;
    }
}