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An implementation of OSGi Remote Service Admin, enhanced to provide support for OSGi Promises and streaming using OSGi PushStreams.
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/*
 Copyright 2008-2011 the original author or authors

 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.
 */

package org.freshvanilla.utils;

import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Classes {

    private static final Map, Class> WRAPPER_TYPES = new HashMap, Class>(31);

    static {
        WRAPPER_TYPES.put(boolean.class, Boolean.class);
        WRAPPER_TYPES.put(byte.class, Byte.class);
        WRAPPER_TYPES.put(char.class, Character.class);
        WRAPPER_TYPES.put(short.class, Short.class);
        WRAPPER_TYPES.put(int.class, Integer.class);
        WRAPPER_TYPES.put(long.class, Long.class);
        WRAPPER_TYPES.put(float.class, Float.class);
        WRAPPER_TYPES.put(double.class, Double.class);
        WRAPPER_TYPES.put(void.class, Void.class);
    }

    private Classes() {
        // not used
    }

    public static ClassLoader getClassLoader(Class cls) {
        ClassLoader cl = cls.getClassLoader();
        return (cl != null ? cl : ClassLoader.getSystemClassLoader());
    }

    @SuppressWarnings("unchecked")
    public static  T parseAs(Object o, Class clazz) {
        if (o == null) {
            return null;
        }

        Class clazz2 = asWrapper(clazz);
        final Class oClass = o.getClass();
        if (clazz2 == oClass || clazz2.isAssignableFrom(oClass)) {
            return (T)o;
        }

        // convert number
        if (Number.class.isAssignableFrom(clazz2)) {
            if (o instanceof Number) {
                Number n = (Number)o;
                if (clazz2 == Byte.class) return (T)(Byte)n.byteValue();
                if (clazz2 == Short.class) return (T)(Short)n.shortValue();
                if (clazz2 == Integer.class) return (T)(Integer)n.intValue();
                if (clazz2 == Long.class) return (T)(Long)n.longValue();
                if (clazz2 == Float.class) return (T)(Float)n.floatValue();
                if (clazz2 == Double.class) return (T)(Double)n.doubleValue();
            }

            String asString = o.toString();
            if (clazz2 == Byte.class) return (T)(Byte)Byte.parseByte(asString);
            if (clazz2 == Short.class) return (T)(Short)Short.parseShort(asString);
            if (clazz2 == Integer.class) return (T)(Integer)Integer.parseInt(asString);
            if (clazz2 == Long.class) return (T)(Long)Long.parseLong(asString);
            if (clazz2 == Float.class) return (T)(Float)Float.parseFloat(asString);
            if (clazz2 == Double.class) return (T)(Double)Double.parseDouble(asString);
            if (clazz2 == BigInteger.class) return (T)new BigInteger(asString);
            if (clazz2 == BigDecimal.class) return (T)new BigDecimal(asString);
        }

        if (clazz == String.class) {
            return (T)o.toString();
        }

        throw new ClassCastException("Unable to convert types from " + oClass + " to " + clazz2);
    }

    private static Class asWrapper(Class clazz) {
        Class ret = WRAPPER_TYPES.get(clazz);
        return ret == null ? clazz : ret;
    }

    public static List> getMemberMethods(Class clazz) {
        List> methodList = new ArrayList>();
        for (Method method : clazz.getMethods()) {
            if (isPublicNonStatic(method)) {
                method.setAccessible(true);
                methodList.add(new MetaMethod