Examples with OnClassLoadEvent org.hotswap.agent.annotation.OnClassLoadEvent used on opensource projects

Example 41 with OnClassLoadEvent

use of org.hotswap.agent.annotation.OnClassLoadEvent in project HotswapAgent by HotswapProjects.

the class OsgiEquinoxPlugin method classReload.

@OnClassLoadEvent(classNameRegexp = ".*", events = LoadEvent.REDEFINE)
public void classReload(CtClass ctClass) {
    // Hotswap is realized by event listener in the RUNTIME mode
    if (!isDebugMode)
        return;
    try {
        URL url = ctClass.getURL();
        // Write content of class to extraClasspath, so classLoader.loadClass can load actual class
        ctClass.writeFile(extraClasspath);
        loadClassToTargetClassLoaders(ctClass, url.toURI(), false);
    } catch (Exception e) {
        LOGGER.warning("classReload() exception : {}", e.getMessage());
    }
}

Example 42 with OnClassLoadEvent

use of org.hotswap.agent.annotation.OnClassLoadEvent in project HotswapAgent by HotswapProjects.

the class Hibernate3JPATransformers method proxyHibernatePersistence.

/**
 * Override HibernatePersistence.createContainerEntityManagerFactory() to return EntityManagerFactory proxy object.
 * {@link org.hotswap.agent.plugin.hibernate3.jpa.proxy.EntityManagerFactoryProxy} holds reference to all proxied factories
 * and on refresh command replaces internal factory with fresh instance.
 * <p/>
 * Two variants covered - createContainerEntityManagerFactory and createEntityManagerFactory.
 * <p/>
 * After the entity manager factory and it's proxy are instantiated, plugin init method is invoked.
 *
 * @param clazz the clazz
 * @throws Exception the exception
 */
@OnClassLoadEvent(classNameRegexp = "org.hibernate.ejb.HibernatePersistence")
public static void proxyHibernatePersistence(CtClass clazz) throws Exception {
    LOGGER.debug("Override org.hibernate.ejb.HibernatePersistence#createContainerEntityManagerFactory and createEntityManagerFactory to create a EntityManagerFactoryProxy proxy.");
    CtMethod oldMethod = clazz.getDeclaredMethod("createContainerEntityManagerFactory");
    oldMethod.setName("_createContainerEntityManagerFactory" + clazz.getSimpleName());
    CtMethod newMethod = CtNewMethod.make("public javax.persistence.EntityManagerFactory createContainerEntityManagerFactory(javax.persistence.spi.PersistenceUnitInfo info, java.util.Map properties) {" + "  return " + Hibernate3JPAHelper.class.getName() + ".createContainerEntityManagerFactoryProxy(" + "      info, properties, _createContainerEntityManagerFactory" + clazz.getSimpleName() + "(info, properties)); " + "}", clazz);
    clazz.addMethod(newMethod);
    oldMethod = clazz.getDeclaredMethod("createEntityManagerFactory");
    oldMethod.setName("_createEntityManagerFactory" + clazz.getSimpleName());
    newMethod = CtNewMethod.make("public javax.persistence.EntityManagerFactory createEntityManagerFactory(String persistenceUnitName, java.util.Map properties) {" + "  return " + Hibernate3JPAHelper.class.getName() + ".createEntityManagerFactoryProxy(" + "      persistenceUnitName, properties, _createEntityManagerFactory" + clazz.getSimpleName() + "(persistenceUnitName, properties)); " + "}", clazz);
    clazz.addMethod(newMethod);
}

Example 43 with OnClassLoadEvent

use of org.hotswap.agent.annotation.OnClassLoadEvent in project HotswapAgent by HotswapProjects.

the class Hibernate3JPATransformers method beanMetaDataManagerRegisterVariable.

/**
 * Bean meta data manager register variable.
 *
 * @param ctClass the ct class
 * @throws CannotCompileException the cannot compile exception
 */
@OnClassLoadEvent(classNameRegexp = "org.hibernate.validator.internal.metadata.BeanMetaDataManager")
public static void beanMetaDataManagerRegisterVariable(CtClass ctClass) throws CannotCompileException {
    StringBuilder src = new StringBuilder("{");
    src.append(PluginManagerInvoker.buildInitializePlugin(Hibernate3JPAPlugin.class));
    src.append(PluginManagerInvoker.buildCallPluginMethod(Hibernate3JPAPlugin.class, "registerBeanMetaDataManager", "this", "java.lang.Object"));
    src.append("}");
    for (CtConstructor constructor : ctClass.getDeclaredConstructors()) {
        constructor.insertAfter(src.toString());
    }
    ctClass.addMethod(CtNewMethod.make("public void __resetCache() {" + "   this.beanMetaDataCache.clear(); " + "}", ctClass));
    LOGGER.debug("org.hibernate.validator.internal.metadata.BeanMetaDataManager - added method __resetCache().");
}

Example 44 with OnClassLoadEvent

use of org.hotswap.agent.annotation.OnClassLoadEvent in project HotswapAgent by HotswapProjects.

the class Hibernate3Transformers method proxyHibernatePersistence.

/**
 * If org.hibernate.ejb.HibernatePersistence is loaded then we live in a JPA
 * environment. Disable the Hibernate3Plugin reload command
 *
 * @param clazz
 *            the clazz
 * @throws Exception
 *             the exception
 */
@OnClassLoadEvent(classNameRegexp = "org.hibernate.ejb.HibernatePersistence")
public static void proxyHibernatePersistence(CtClass clazz) throws Exception {
    CtConstructor con = clazz.getDeclaredConstructor(new CtClass[] {});
    LOGGER.debug("org.hibernate.ejb.HibernatePersistence.<init>");
    // 
    con.insertAfter(// 
    "java.lang.ClassLoader $$cl = Thread.currentThread().getContextClassLoader();" + // 
    PluginManagerInvoker.buildInitializePlugin(Hibernate3Plugin.class, "$$cl") + // 
    PluginManagerInvoker.buildCallPluginMethod("$$cl", Hibernate3Plugin.class, "disable"));
}

Example 45 with OnClassLoadEvent

use of org.hotswap.agent.annotation.OnClassLoadEvent in project HotswapAgent by HotswapProjects.

the class Hibernate3Transformers method proxySessionFactory.

/**
 * Patch org.hibernate.cfg.Configuration with ReInitializable features. When
 * java8+ is supprted, then make methods default in ReInitializable
 *
 * @param classLoader
 *            the class loader
 * @param classPool
 *            the class pool
 * @param clazz
 *            the clazz
 * @throws Exception
 *             the exception
 */
@OnClassLoadEvent(classNameRegexp = "org.hibernate.cfg.Configuration")
public static void proxySessionFactory(ClassLoader classLoader, ClassPool classPool, CtClass clazz) throws Exception {
    LOGGER.debug("Adding interface o.h.a.p.h.s.p.ReInitializable to org.hibernate.cfg.Configuration.");
    clazz.addInterface(classPool.get("org.hotswap.agent.plugin.hibernate3.session.proxy.ReInitializable"));
    CtField field = CtField.make("private org.hotswap.agent.plugin.hibernate3.session.proxy.OverrideConfig $$override  = new org.hotswap.agent.plugin.hibernate3.session.proxy.OverrideConfig();", clazz);
    clazz.addField(field);
    LOGGER.debug("Patching org.hibernate.cfg.Configuration#buildSessionFactory to create a SessionFactoryProxy proxy.");
    CtMethod oldMethod = clazz.getDeclaredMethod("buildSessionFactory");
    oldMethod.setName("_buildSessionFactory");
    CtMethod newMethod = // 
    CtNewMethod.make(// 
    "public org.hibernate.SessionFactory buildSessionFactory() throws org.hibernate.HibernateException {" + "  return " + // 
    SessionFactoryProxy.class.getName() + // 
    "       .getWrapper(this)" + // 
    "       .proxy(_buildSessionFactory()); " + "}", clazz);
    clazz.addMethod(newMethod);
    LOGGER.debug("Adding org.hibernate.cfg.Configuration.reInitialize() method");
    CtMethod reInitMethod = // 
    CtNewMethod.make(// 
    "public void reInitialize(){" + // 
    "  this.settingsFactory = new org.hibernate.cfg.SettingsFactory();" + // 
    "  this.reset();" + "}", clazz);
    clazz.addMethod(reInitMethod);
    LOGGER.debug("Adding org.hibernate.cfg.Configuration.getOverrideConfig() method");
    CtMethod internalPropsMethod = // 
    CtNewMethod.make(// 
    "public org.hotswap.agent.plugin.hibernate3.session.proxy.OverrideConfig getOverrideConfig(){" + // 
    "  return $$override;" + "}", clazz);
    clazz.addMethod(internalPropsMethod);
    CtConstructor con = clazz.getDeclaredConstructor(new CtClass[] {});
    LOGGER.debug("Patching org.hibernate.cfg.Configuration.<init>");
    // 
    con.insertAfter(// 
    "java.lang.ClassLoader $$cl = Thread.currentThread().getContextClassLoader();" + // 
    PluginManagerInvoker.buildInitializePlugin(Hibernate3Plugin.class, "$$cl") + // 
    "java.lang.String $$version = org.hibernate.Version.getVersionString();" + // 
    PluginManagerInvoker.buildCallPluginMethod("$$cl", Hibernate3Plugin.class, "setVersion", "$$version", "java.lang.String"));
    ProxyUtil.addMethod(classLoader, classPool, clazz, "void", "hotSwap", null);
    ProxyUtil.addMethod(classLoader, classPool, clazz, "org.hibernate.cfg.Configuration", "setProperty", new String[] { "java.lang.String", "java.lang.String" });
    ProxyUtil.addMethod(classLoader, classPool, clazz, "org.hibernate.cfg.Configuration", "configure", new String[] { "java.lang.String" });
    ProxyUtil.addMethod(classLoader, classPool, clazz, "org.hibernate.cfg.Configuration", "configure", new String[] { "java.net.URL" });
    ProxyUtil.addMethod(classLoader, classPool, clazz, "org.hibernate.cfg.Configuration", "configure", new String[] { "java.io.File" });
    ProxyUtil.addMethod(classLoader, classPool, clazz, "org.hibernate.cfg.Configuration", "configure", new String[] { "org.w3c.dom.Document" });
    ProxyUtil.addMethod(classLoader, classPool, clazz, "org.hibernate.cfg.Configuration", "configure", null);
    LOGGER.info("Hibernate3Plugin, patched org.hibernate.cfg.Configuration");
}