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Commit 408a4ab3a96b9de59b77ebf122b74bee76f5d47c

Authored by Cleverson Sacramento
1 parent 3567cb60
Exists in master

Carregamento das classes de configuração via proxy utilizando Javassist

Showing 3 changed files with 180 additions and 11 deletions   Show diff stats
impl/core/src/main/java/br/gov/frameworkdemoiselle/internal/bootstrap/ConfigurationBootstrap.java
  Diff comments   View file @408a4ab
... ... @@ -40,12 +40,20 @@ import java.util.ArrayList;
40 40 import java.util.Collections;
41 41 import java.util.List;
42 42  
  43 +import javassist.ClassPool;
  44 +import javassist.CtClass;
  45 +import javassist.CtMethod;
  46 +import javassist.CtNewMethod;
  47 +
43 48 import javax.enterprise.event.Observes;
  49 +import javax.enterprise.inject.spi.AfterBeanDiscovery;
44 50 import javax.enterprise.inject.spi.AnnotatedType;
  51 +import javax.enterprise.inject.spi.BeanManager;
45 52 import javax.enterprise.inject.spi.Extension;
46 53 import javax.enterprise.inject.spi.ProcessAnnotatedType;
47 54  
48 55 import br.gov.frameworkdemoiselle.configuration.Configuration;
  56 +import br.gov.frameworkdemoiselle.internal.configuration.ConfigurationLoader;
49 57  
50 58 public class ConfigurationBootstrap implements Extension {
51 59  
... ... @@ -55,11 +63,50 @@ public class ConfigurationBootstrap implements Extension {
55 63 final AnnotatedType<T> annotatedType = event.getAnnotatedType();
56 64  
57 65 if (annotatedType.getJavaClass().isAnnotationPresent(Configuration.class)) {
58   - getCache().add(annotatedType.getJavaClass());
  66 + cache.add(annotatedType.getJavaClass());
  67 + event.veto();
  68 + }
  69 + }
  70 +
  71 + public void afterBeanDiscovery(@Observes AfterBeanDiscovery abd, BeanManager beanManager) throws Exception {
  72 + Class<?> proxy;
  73 +
  74 + for (Class<?> config : cache) {
  75 + proxy = createProxy(config);
  76 + abd.addBean(new ProxyBean((Class<Object>) proxy, beanManager));
59 77 }
60 78 }
61 79  
62   - public List<Class<?>> getCache() {
63   - return cache;
  80 + @SuppressWarnings("unchecked")
  81 + private Class<Object> createProxy(Class<?> type) throws Exception {
  82 + String superClassName = type.getCanonicalName();
  83 + String chieldClassName = superClassName + "__DemoiselleProxy";
  84 + ClassPool pool = ClassPool.getDefault();
  85 +
  86 + CtClass ctChieldClass = pool.makeClass(chieldClassName);
  87 + CtClass ctSuperClass = pool.get(superClassName);
  88 + ctChieldClass.setSuperclass(ctSuperClass);
  89 +
  90 + StringBuffer buffer = new StringBuffer();
  91 + buffer.append("new ");
  92 + buffer.append(ConfigurationLoader.class.getCanonicalName());
  93 + buffer.append("().load(this);");
  94 +
  95 + CtMethod ctChieldMethod;
  96 + for (CtMethod ctSuperMethod : ctSuperClass.getDeclaredMethods()) {
  97 + ctChieldMethod = CtNewMethod.delegator(ctSuperMethod, ctChieldClass);
  98 + ctChieldMethod.insertBefore(buffer.toString());
  99 +
  100 + ctChieldClass.addMethod(ctChieldMethod);
  101 + }
  102 +
  103 + // CtConstructor ctChieldDefaultConstructor = CtNewConstructor.defaultConstructor(ctChieldClass);
  104 + // ctChieldClass.addConstructor(ctChieldDefaultConstructor);
  105 + //
  106 + // for (CtConstructor ctConstructor : ctChieldClass.getConstructors()) {
  107 + // ctConstructor.insertBefore(buffer.toString());
  108 + // }
  109 +
  110 + return ctChieldClass.toClass();
64 111 }
65 112 }
... ...
impl/core/src/main/java/br/gov/frameworkdemoiselle/internal/bootstrap/ProxyBean.java 0 → 100644
  Diff comments   View file @408a4ab
... ... @@ -0,0 +1,130 @@
  1 +/*
  2 + * Demoiselle Framework
  3 + * Copyright (C) 2010 SERPRO
  4 + * ----------------------------------------------------------------------------
  5 + * This file is part of Demoiselle Framework.
  6 + *
  7 + * Demoiselle Framework is free software; you can redistribute it and/or
  8 + * modify it under the terms of the GNU Lesser General Public License version 3
  9 + * as published by the Free Software Foundation.
  10 + *
  11 + * This program is distributed in the hope that it will be useful,
  12 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14 + * GNU General Public License for more details.
  15 + *
  16 + * You should have received a copy of the GNU Lesser General Public License version 3
  17 + * along with this program; if not, see <http://www.gnu.org/licenses/>
  18 + * or write to the Free Software Foundation, Inc., 51 Franklin Street,
  19 + * Fifth Floor, Boston, MA 02110-1301, USA.
  20 + * ----------------------------------------------------------------------------
  21 + * Este arquivo é parte do Framework Demoiselle.
  22 + *
  23 + * O Framework Demoiselle é um software livre; você pode redistribuí-lo e/ou
  24 + * modificá-lo dentro dos termos da GNU LGPL versão 3 como publicada pela Fundação
  25 + * do Software Livre (FSF).
  26 + *
  27 + * Este programa é distribuído na esperança que possa ser útil, mas SEM NENHUMA
  28 + * GARANTIA; sem uma garantia implícita de ADEQUAÇÃO a qualquer MERCADO ou
  29 + * APLICAÇÃO EM PARTICULAR. Veja a Licença Pública Geral GNU/LGPL em português
  30 + * para maiores detalhes.
  31 + *
  32 + * Você deve ter recebido uma cópia da GNU LGPL versão 3, sob o título
  33 + * "LICENCA.txt", junto com esse programa. Se não, acesse <http://www.gnu.org/licenses/>
  34 + * ou escreva para a Fundação do Software Livre (FSF) Inc.,
  35 + * 51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA.
  36 + */
  37 +package br.gov.frameworkdemoiselle.internal.bootstrap;
  38 +
  39 +import java.lang.annotation.Annotation;
  40 +import java.lang.reflect.Type;
  41 +import java.util.Collections;
  42 +import java.util.HashSet;
  43 +import java.util.Set;
  44 +
  45 +import javax.enterprise.context.spi.CreationalContext;
  46 +import javax.enterprise.inject.Any;
  47 +import javax.enterprise.inject.Default;
  48 +import javax.enterprise.inject.spi.AnnotatedType;
  49 +import javax.enterprise.inject.spi.Bean;
  50 +import javax.enterprise.inject.spi.BeanManager;
  51 +import javax.enterprise.inject.spi.InjectionPoint;
  52 +import javax.enterprise.inject.spi.InjectionTarget;
  53 +import javax.enterprise.util.AnnotationLiteral;
  54 +import javax.inject.Singleton;
  55 +
  56 +/**
  57 + * @see http://docs.jboss.org/weld/reference/latest/en-US/html_single/#d0e5035
  58 + */
  59 +public class ProxyBean implements Bean<Object> {
  60 +
  61 + private Class<Object> proxy;
  62 +
  63 + private InjectionTarget<Object> injectionTarget;
  64 +
  65 + public ProxyBean(Class<Object> proxy, BeanManager beanManager) {
  66 + AnnotatedType<Object> annotatedType = beanManager.createAnnotatedType(proxy);
  67 +
  68 + this.injectionTarget = beanManager.createInjectionTarget(annotatedType);
  69 + this.proxy = proxy;
  70 + }
  71 +
  72 + public Object create(CreationalContext<Object> creationalContext) {
  73 + Object instance = injectionTarget.produce(creationalContext);
  74 + injectionTarget.inject(instance, creationalContext);
  75 + injectionTarget.postConstruct(instance);
  76 + return instance;
  77 + }
  78 +
  79 + public void destroy(Object instance, CreationalContext<Object> creationalContext) {
  80 + injectionTarget.preDestroy(instance);
  81 + injectionTarget.dispose(instance);
  82 + creationalContext.release();
  83 + }
  84 +
  85 + public Set<Type> getTypes() {
  86 + Set<Type> types = new HashSet<Type>();
  87 + types.add(proxy.getSuperclass());
  88 + types.add(Object.class);
  89 + return types;
  90 + }
  91 +
  92 + @SuppressWarnings("serial")
  93 + public Set<Annotation> getQualifiers() {
  94 + Set<Annotation> qualifiers = new HashSet<Annotation>();
  95 + qualifiers.add(new AnnotationLiteral<Default>() {
  96 + });
  97 + qualifiers.add(new AnnotationLiteral<Any>() {
  98 + });
  99 +
  100 + return qualifiers;
  101 + }
  102 +
  103 + public Class<? extends Annotation> getScope() {
  104 + return Singleton.class;
  105 + }
  106 +
  107 + public String getName() {
  108 + return null;
  109 + }
  110 +
  111 + public Set<Class<? extends Annotation>> getStereotypes() {
  112 + return Collections.emptySet();
  113 + }
  114 +
  115 + public Class<Object> getBeanClass() {
  116 + return proxy;
  117 + }
  118 +
  119 + public boolean isAlternative() {
  120 + return false;
  121 + }
  122 +
  123 + public boolean isNullable() {
  124 + return false;
  125 + }
  126 +
  127 + public Set<InjectionPoint> getInjectionPoints() {
  128 + return injectionTarget.getInjectionPoints();
  129 + }
  130 +}
... ...
impl/core/src/main/java/br/gov/frameworkdemoiselle/internal/bootstrap/StartupBootstrap.java
  Diff comments   View file @408a4ab
... ... @@ -40,11 +40,9 @@ import javax.enterprise.event.Observes;
40 40  
41 41 import org.slf4j.Logger;
42 42  
43   -import br.gov.frameworkdemoiselle.internal.configuration.ConfigurationLoader;
44 43 import br.gov.frameworkdemoiselle.internal.producer.LoggerProducer;
45 44 import br.gov.frameworkdemoiselle.lifecycle.AfterStartupProccess;
46 45 import br.gov.frameworkdemoiselle.lifecycle.Startup;
47   -import br.gov.frameworkdemoiselle.util.Beans;
48 46  
49 47 /**
50 48 * This class is the bootstrap to execute the processes at load time.
... ... @@ -63,12 +61,6 @@ public class StartupBootstrap extends AbstractLifecycleBootstrap&lt;Startup&gt; {
63 61 }
64 62  
65 63 public void startup(@Observes AfterStartupProccess event) {
66   - ConfigurationLoader loader = Beans.getReference(ConfigurationLoader.class);
67   - ConfigurationBootstrap bootstrap = Beans.getReference(ConfigurationBootstrap.class);
68   - for (Class<?> clazz: bootstrap.getCache()) {
69   - Object object = Beans.getReference(clazz);
70   - loader.load(object);
71   - }
72 64 proccessEvent();
73 65 }
74 66 }
... ...