Subversion Repositories bacoAlunos

package jomm.experiments;

import javassist.util.proxy.MethodFilter;

import javassist.util.proxy.MethodHandler;

import javassist.util.proxy.ProxyFactory;

import pt.estgp.estgweb.domain.Course;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

/**

 * Created by jorgemachado on 12/04/16.

 */

public class JavaAssistDynamicProxy

{

    public static void main(1.5.0/docs/api/java/lang/String.html">String[] args) throws 1.5.0/docs/api/java/lang/reflect/InvocationTargetException.html">InvocationTargetException, 1.5.0/docs/api/java/lang/NoSuchMethodException.html">NoSuchMethodException, 1.5.0/docs/api/java/lang/InstantiationException.html">InstantiationException, 1.5.0/docs/api/java/lang/IllegalAccessException.html">IllegalAccessException {

        ProxyFactory factory = new ProxyFactory();

        factory.setSuperclass(Course.class);

        factory.setFilter(

                new MethodFilter() {

                    @1.5.0/docs/api/java/lang/Override.html">Override

                    public boolean isHandled(1.5.0/docs/api/java/lang/reflect/Method.html">Method method) {

                        return true;

                        //return Modifier.isAbstract(method.getModifiers());

                    }

                }

        );

        MethodHandler handler = new MethodHandler() {

            @1.5.0/docs/api/java/lang/Override.html">Override

            public 5+0%2Fdocs%2Fapi+Object">Object invoke(5+0%2Fdocs%2Fapi+Object">Object self, 1.5.0/docs/api/java/lang/reflect/Method.html">Method thisMethod, 1.5.0/docs/api/java/lang/reflect/Method.html">Method proceed, 5+0%2Fdocs%2Fapi+Object">Object[] args) throws 1.5.0/docs/api/java/lang/Throwable.html">Throwable {

                1.5.0/docs/api/java/lang/System.html">System.out.println("Handling " + thisMethod + " via the method handler");

                if(thisMethod.getName().startsWith("getId"))

                {

                    return proceed.invoke(self,args);

                }

                else if(thisMethod.getName().startsWith("get"))

                {

                    1.5.0/docs/api/java/lang/System.html">System.out.println("Acedendo a uma propriedade " + thisMethod.getName() + " na class " + thisMethod.getDeclaringClass().getName());

                    1.5.0/docs/api/java/lang/String.html">String campo  = thisMethod.getName().substring(3);

                    campo = ("" + campo.charAt(0)).toLowerCase() + campo.substring(1);

                    1.5.0/docs/api/java/lang/System.html">System.out.println("select " + campo + " from " + thisMethod.getDeclaringClass().getCanonicalName() + " where id = " +

                            self.getClass().getMethod("getId").invoke(self, new 5+0%2Fdocs%2Fapi+Object">Object[]{}));

                }

                if(thisMethod.getName().startsWith("set"))

                {

                    1.5.0/docs/api/java/lang/System.html">System.out.println("Alterando uma propriedade no proxy " + thisMethod.getName() + " na class " + thisMethod.getDeclaringClass().getName());

                   return proceed.invoke(self,args);

                }

                return null;

            }

        };

        Course u = (Course) factory.create(new 1.5.0/docs/api/java/lang/Class.html">Class[0], new 5+0%2Fdocs%2Fapi+Object">Object[0], handler);

        u.setId(3);

        u.getName();

        u.getDepartment().getCourseSchool().getInstitutionalCode();

        u.getId();

    }

}