Example usage for org.apache.commons.digester.plugins PluginConfigurationException PluginConfigurationException

Introduction

In this page you can find the example usage for org.apache.commons.digester.plugins PluginConfigurationException PluginConfigurationException.

Prototype

public PluginConfigurationException(String msg) 

Source Link

Usage

From source file:de.knurt.fam.plugin.DefaultPluginResolver.java

private void initPlugins() {
    File pluginDirectory = new File(FamConnector.me().getPluginDirectory());
    if (pluginDirectory.exists() && pluginDirectory.isDirectory() && pluginDirectory.canRead()) {
        File[] files = pluginDirectory.listFiles();
        ClassLoader currentThreadClassLoader = Thread.currentThread().getContextClassLoader();
        for (File file : files) {
            if (file.isFile() && file.getName().toLowerCase().endsWith("jar")) {
                JarFile jar = null;
                try {
                    jar = new JarFile(file.getAbsoluteFile().toString());
                    Enumeration<JarEntry> jarEntries = jar.entries();
                    while (jarEntries.hasMoreElements()) {
                        JarEntry entry = jarEntries.nextElement();
                        if (entry.getName().toLowerCase().endsWith("class")) {
                            String className = entry.getName().replaceAll("/", ".").replaceAll("\\.class$", "");
                            // @SuppressWarnings("resource") // classLoader must not be closed, getting an "IllegalStateException: zip file closed" otherwise
                            URLClassLoader classLoader = new URLClassLoader(new URL[] { file.toURI().toURL() },
                                    currentThreadClassLoader);
                            Class<?> cl = classLoader.loadClass(className);
                            if (this.isPlugin(cl)) {
                                Plugin plugin = (Plugin) cl.newInstance();
                                this.plugins.add(plugin);
                            }//from   w ww  .j a  v a 2 s . c  om
                        }
                    }
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                    FamLog.logException(this.getClass(), e, "failed to load plugin", 201010091426l);
                } catch (InstantiationException e) {
                    e.printStackTrace();
                    FamLog.logException(this.getClass(), e, "failed to load plugin", 201010091424l);
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                    FamLog.logException(this.getClass(), e, "failed to load plugin", 201010091425l);
                } catch (IOException e) {
                    e.printStackTrace();
                    FamLog.logException(this.getClass(), e, "failed to load plugin", 201010091351l);
                } finally {
                    try {
                        jar.close();
                    } catch (Exception e) {
                    }
                }
            }
        }
        for (Plugin plugin : this.plugins) {
            boolean found = false;
            if (this.implementz(plugin.getClass(), RegisterSubmission.class)) {
                if (found == true) {
                    throw new PluginConfigurationException("Found more than one RegisterSubmission classes");
                    // TODO #19 supply a solution Ticket
                }
                this.registerSubmission = (RegisterSubmission) plugin;
                found = true;
            }
        }
        for (Plugin plugin : this.plugins) {
            plugin.start();
        }
    }
    // search plugin
    if (this.registerSubmission == null) {
        this.registerSubmission = new DefaultRegisterSubmission();
    }
}

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