WebManagerWrapper.java

package org.objectweb.jonas_web.deployment.lib.wrapper;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;

import org.objectweb.jonas_web.deployment.api.WebContainerDeploymentDesc;
import org.objectweb.jonas_web.deployment.api.WebContainerDeploymentDescException;

import org.objectweb.jonas.common.Log;
import org.objectweb.jonas.server.LoaderManager;

import org.objectweb.util.monolog.api.BasicLevel;
import org.objectweb.util.monolog.api.Logger;

public class WebManagerWrapper {

    private static Logger logger = Log.getLogger(Log.JONAS_EAR_PREFIX);

    private static final String WEBMANAGER_CLASSNAME = "org.objectweb.jonas_web.deployment.lib.WebDeploymentDescManager";

    private WebManagerWrapper() { }

    public static WebContainerDeploymentDesc getDeploymentDesc(URL url, ClassLoader moduleCL, ClassLoader earCL)
            throws WebContainerDeploymentDescException {
        LoaderManager lm = LoaderManager.getInstance();
        WebContainerDeploymentDesc webDD = null;

        try {
            ClassLoader tools = lm.getToolsLoader();
            Class manager = tools.loadClass(WEBMANAGER_CLASSNAME);
            Method m = manager.getDeclaredMethod("getInstance", new Class[] {});
            Object instance = m.invoke(null, new Object[] {});
            m = manager.getDeclaredMethod("getDeploymentDesc", new Class[] {URL.class, ClassLoader.class,
                    ClassLoader.class});
            webDD = (WebContainerDeploymentDesc) m.invoke(instance, new Object[] {url, moduleCL, earCL});
        } catch (InvocationTargetException ite) {
            Throwable t = ite.getTargetException();
            if (WebContainerDeploymentDescException.class.isInstance(t)) {
                throw (WebContainerDeploymentDescException) ite.getTargetException();
            } else {
                throw new WebContainerDeploymentDescException("WebDeploymentDescManager.getDeploymentDesc fails", t);
            }
        } catch (Exception e) {
            // TODO add i18n here
            throw new WebContainerDeploymentDescException("Problems when using reflection on WebDeploymentDescManager", e);
        }

        return webDD;
    }

    public static void setAltDD(URLClassLoader earClassLoader, URL[] warUrls, URL[] warsAltDDs) {
        LoaderManager lm = LoaderManager.getInstance();

        try {
            ClassLoader tools = lm.getToolsLoader();
            Class manager = tools.loadClass(WEBMANAGER_CLASSNAME);
            Method m = manager.getDeclaredMethod("getInstance", new Class[] {});
            Object instance = m.invoke(null, new Object[] {});
            m = manager.getDeclaredMethod("setAltDD", new Class[] {ClassLoader.class, URL[].class, URL[].class});
            m.invoke(instance, new Object[] {earClassLoader, warUrls, warsAltDDs});
        } catch (Exception e) {
            // Should never occurs
            logger.log(BasicLevel.ERROR, e);
        }
    }

    public static void setParsingWithValidation(boolean b) {
        LoaderManager lm = LoaderManager.getInstance();

        try {
            ClassLoader tools = lm.getToolsLoader();
            Class manager = tools.loadClass(WEBMANAGER_CLASSNAME);
            Method m = manager.getDeclaredMethod("setParsingWithValidation", new Class[] {boolean.class});
            m.invoke(null, new Object[] {new Boolean(b)});
        } catch (Exception e) {
            // Should never occurs
            logger.log(BasicLevel.ERROR, e);
        }
    }

    public static void removeCache(ClassLoader classLoader) {
        LoaderManager lm = LoaderManager.getInstance();

        try {
            ClassLoader tools = lm.getToolsLoader();
            Class manager = tools.loadClass(WEBMANAGER_CLASSNAME);
            Method m = manager.getDeclaredMethod("getInstance", new Class[] {});
            Object instance = m.invoke(null, new Object[] {});
            m = manager.getDeclaredMethod("removeCache", new Class[] {ClassLoader.class});
            m.invoke(instance, new Object[] {classLoader});
        } catch (Exception e) {
            // Should never occurs
            logger.log(BasicLevel.ERROR, e);
        }
    }

    public static WebContainerDeploymentDesc getDeploymentDesc(String warName, ClassLoader cl)
            throws WebContainerDeploymentDescException {
        LoaderManager lm = LoaderManager.getInstance();
        WebContainerDeploymentDesc desc = null;

        try {
            ClassLoader tools = lm.getToolsLoader();
            Class manager = tools.loadClass(WEBMANAGER_CLASSNAME);
            Method m = manager.getDeclaredMethod("getDeploymentDesc", new Class[] {String.class, ClassLoader.class});
            desc = (WebContainerDeploymentDesc) m.invoke(null, new Object[] {warName, cl});
        } catch (InvocationTargetException ite) {
            Throwable t = ite.getTargetException();
            if (WebContainerDeploymentDescException.class.isInstance(t)) {
                throw (WebContainerDeploymentDescException) ite.getTargetException();
            } else {
                throw new WebContainerDeploymentDescException("WebDeploymentDescManager.getDeploymentDesc fails", t);
            }
        } catch (Exception e) {
            // TODO add i18n here
            throw new WebContainerDeploymentDescException("Problems when using reflection on WebDeploymentDescManager", e);
        }

        return desc;
    }

}

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