Java 类org.reflections.scanners.AbstractScanner 实例源码

private void generateSchemas() throws Exception {
    File[] jars = collectJars();

    if (jars == null) {
        throw new MojoExecutionException("No classpath file found in the target directory");
    }

    List<URL> jarURLs = new ArrayList<URL>();
    jarURLs.add(classesDirectory.toURI().toURL());
    for (File jar : jars) {
        jarURLs.add(jar.toURI().toURL());
    }

    final List<String> injectableClassNames = new ArrayList<String>();
    // Scan classes only
    new Reflections(new ConfigurationBuilder().
        addUrls(classesDirectory.toURI().toURL()).setScanners(new AbstractScanner() {
        @Override
        public void scan(Object cls) {
            if ((cls instanceof ClassFile) && isInjectable((ClassFile) cls, getLog())) {
                injectableClassNames.add(((ClassFile) cls).getName());
            }
        }
    }));

    URLClassLoader classLoader = new URLClassLoader(jarURLs.toArray(new URL[jarURLs.size()]), ConfigProperty.class.getClassLoader());
    ClassLoader[] loaders = new ClassLoader[]{classLoader};

    List<Class> injectableClasses = (List<Class>) (Object) ReflectionUtils.forNames(injectableClassNames, loaders);

    processClasses(injectableClasses);
}

private void createConfigFile() throws Exception {
    File classesDir = new File(outputDirectory, "classes/");
    File libDir = new File(outputDirectory, "lib");
    File[] jars = libDir.listFiles(new FilenameFilter() {
        public boolean accept(File dir, String name) {
            return name.endsWith(".jar");
        }
    });
    if (jars == null) {
        throw new MojoExecutionException("No jar files found in " + libDir.getAbsolutePath());
    }

    List<URL> jarURLs = new ArrayList<URL>();
    jarURLs.add(classesDir.toURI().toURL());
    for (File jar : jars) {
        jarURLs.add(jar.toURI().toURL());
    }

    // Scan classes and all jars
    final List<String> candidates = new ArrayList<String>();
    new Reflections(new ConfigurationBuilder().
        addUrls(jarURLs).setScanners(new AbstractScanner() {
        @Override
        public void scan(Object cls) {
            if ((cls instanceof ClassFile)) {
                ClassFile classFile = (ClassFile) cls;

                if (XmlSchemaGeneratingMojo.isInjectable(classFile, getLog()) &&
                    (classFile.getName().equals(configClassName) || classFile.getName().endsWith(configClassName))) {
                    candidates.add(classFile.getName());
                }
            }
        }
    }));

    if (candidates.isEmpty()) {
        throw new MojoFailureException("No class found for " + configClassName);
    }

    if (candidates.size() > 1) {
        throw new MojoFailureException("More classes found for " + configClassName + ":" + candidates);
    }

    String fullClassName = candidates.get(0);

    URLClassLoader classLoader = new URLClassLoader(jarURLs.toArray(new URL[jarURLs.size()]),
        ConfigProperty.class.getClassLoader());
    Class configClass = ReflectionUtils.forName(fullClassName, classLoader);
    generateToFile(configClass);
}