Java Method Call invokeCallback(String callbackName, String callbackParam)

Description

invoke Callback

License

Apache License

Declaration

public static void invokeCallback(String callbackName, String callbackParam) 

Method Source Code

//package com.java2s;
/*//www .j  a v  a 2s  .c o  m
 * *
 *    Copyright 2011 Baptiste Wicht & Fr?d?ric Bapst
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 *
 */

import java.lang.reflect.Method;
import java.util.regex.Pattern;

public class Main {
    private static final Class<?>[] CALLBACK_PARAM_TYPES = { String.class };
    private static final Pattern METHOD_SEPARATOR = Pattern.compile("/");

    public static void invokeCallback(String callbackName, String callbackParam) {
        int a = callbackName.lastIndexOf('/');
        if (a < 0) {
            throw new IllegalStateException("bad callback format (should be ab/cd/className/methName)");
        }

        String className = METHOD_SEPARATOR.matcher(callbackName.substring(0, a)).replaceAll(".");
        String methodName = callbackName.substring(a + 1);

        try {
            Class<?> clazz = Class.forName(className);
            Method method = clazz.getMethod(methodName, CALLBACK_PARAM_TYPES);
            method.invoke(null, callbackParam);
        } catch (Exception e) {
            throw new IllegalStateException(e);
        }
    }
}

Related

1. invoke_ex(Object obj, String method, Class[] params, Object[] args)
2. invokeAccessableMethodWithArguments(Object instance, String method, Object... arguments)
3. invokeAndCastCollection(T returnType, Method m, Object obj, Object... args)
4. invokeAnnotatedDeclaredMethod(Object obj, Class annotationType)
5. invokeAnUnwrapException(final Method method, final Object[] args, final Object target)
6. invokeCmd(String className, String[] args)
7. invokeDeclared(Class c, Object obj, String method, Class[] paramClasses, Object[] params)
8. invokeDeclared(Class c, Object obj, String method, Class[] paramClasses, Object[] params)
9. invokeDeclaredMethod(Object object, String methodName, Object... parameters)