com.bstek.dorado.util.clazz.ClassUtils.java Source code

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Here is the source code for com.bstek.dorado.util.clazz.ClassUtils.java

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/*
 * This file is part of Dorado 7.x (http://dorado7.bsdn.org).
 * 
 * Copyright (c) 2002-2012 BSTEK Corp. All rights reserved.
 * 
 * This file is dual-licensed under the AGPLv3 (http://www.gnu.org/licenses/agpl-3.0.html) 
 * and BSDN commercial (http://www.bsdn.org/licenses) licenses.
 * 
 * If you are unsure which license is appropriate for your use, please contact the sales department
 * at http://www.bstek.com/contact.
 */

package com.bstek.dorado.util.clazz;

import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

import com.bstek.dorado.core.io.Resource;
import com.bstek.dorado.core.io.ResourceUtils;

/**
 * @author Benny Bao (mailto:benny.bao@bstek.com)
 * @since 2011-12-26
 */
public class ClassUtils {
    @SuppressWarnings("rawtypes")
    public static Class forName(String className) throws ClassNotFoundException {
        try {
            return org.apache.commons.lang.ClassUtils.getClass(className);
        } catch (Error e) {
            throw new ClassNotFoundException(e.getMessage(), e);
        }
    }

    public static Set<Class<?>> findClassTypes(String expression, Class<?> targetType)
            throws IOException, ClassNotFoundException {
        Set<Class<?>> classTypes = new HashSet<Class<?>>();
        String pathExpression = "classpath*:" + expression.replace('.', '/') + ".class";
        Resource[] resources = ResourceUtils.getResources(pathExpression);
        for (Resource resource : resources) {
            String path = resource.getPath();
            int i1 = path.lastIndexOf('/');
            String simpleClassName = path.substring((i1 < 0) ? 0 : (i1 + 1), path.length() - 6);
            int i2 = expression.lastIndexOf('.');
            String className = expression.substring(0, i2 + 1) + simpleClassName;

            Class<?> type = null;
            try {
                type = ClassUtils.forName(className);
            } catch (Exception e) {
                // do nothing
            }
            if (type != null && targetType.isAssignableFrom(type)) {
                classTypes.add(type);
            }
        }
        return classTypes;
    }

    public static Set<Class<?>> findClassTypes(String[] expressions, Class<?> targetType)
            throws IOException, ClassNotFoundException {
        Set<Class<?>> classTypes = new HashSet<Class<?>>();
        for (String expression : expressions) {
            classTypes.addAll(findClassTypes(expression, targetType));
        }
        return classTypes;
    }
}