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

private Scanner[] parseScanners() throws MojoExecutionException {
    Set<Scanner> scannersSet = new HashSet<Scanner>(0);

    if (StringUtils.isNotEmpty(scanners)) {
        String[] scannerClasses = scanners.split(",");
        for (String scannerClass : scannerClasses) {
            try {
                scannersSet.add((Scanner) forName(scannerClass.trim(), "org.reflections.scanners").newInstance());
            } catch (Exception e) {
                throw new MojoExecutionException(String.format("error getting scanner %s or org.reflections.scanners.%s", scannerClass.trim(), scannerClass.trim()), e);
            }
        }
    }

    return scannersSet.toArray(new Scanner[scannersSet.size()]);
}

private void init(String packageName) {
  FilterBuilder filters = new FilterBuilder().includePackage(packageName);

  Scanner[] scanners = {
      new TypeAnnotationsScanner(),
      new MethodAnnotationsScanner(),
      new MethodParameterScanner(),
      new FieldAnnotationsScanner(),
      new SubTypesScanner().filterResultsBy(filters)
  };

  reflections = new ConfigurationBuilder()
      .addUrls(ClasspathHelper.forPackage(packageName))
      .addScanners(scanners)
      .filterInputsBy(filters)
      .build();
}

/**
 * constructs a Reflections instance and scan according to given {@link org.reflections.Configuration}
 * <p>it is preferred to use {@link org.reflections.util.ConfigurationBuilder}
 */
public Reflections(final Configuration configuration) {
    this.configuration = configuration;
    store = new Store(configuration);

    if (configuration.getScanners() != null && !configuration.getScanners().isEmpty()) {
        //inject to scanners
        for (Scanner scanner : configuration.getScanners()) {
            scanner.setConfiguration(configuration);
            scanner.setStore(store.getOrCreate(index(scanner.getClass())));
        }

        scan();

        if (configuration.shouldExpandSuperTypes()) {
            expandSuperTypes();
        }
    }
}

public static void init() throws InstantiationException, IllegalAccessException {
    ModuleManager.MODULE_EMPTY.name = "null";
    final Reflections reflections = new Reflections("client.modules", new Scanner[0]);
    final Set<Class<? extends Module>> classes = (Set<Class<? extends Module>>)reflections.getSubTypesOf((Class)Module.class);
    for (final Class<? extends Module> clazz : classes) {
        try {
            final Module loadedModule = (Module)clazz.newInstance();
            if (!clazz.isAnnotationPresent(Mod.class)) {
                continue;
            }
            final Mod modAnnotation = clazz.getAnnotation(Mod.class);
            loadedModule.realName = clazz.getSimpleName();
            loadedModule.name = (modAnnotation.name().equalsIgnoreCase("null") ? clazz.getSimpleName() : modAnnotation.name());
            loadedModule.keyBind = modAnnotation.keybind();
            loadedModule.shown = modAnnotation.shown();
            loadedModule.suffix = modAnnotation.suffix();
            final String categoryString = clazz.getPackage().getName().split("modules.")[1];
            loadedModule.category = Category.valueOf(categoryString.toUpperCase());
            if (modAnnotation.enabled()) {
                loadedModule.onEnable();
            }
            loadedModule.preInit();
            ModuleManager.moduleList.add(loadedModule);
        }
        catch (Exception ex) {}
    }
    load();
    save();
    ModuleManager.moduleList.sort(new Comparator<Module>() {
        @Override
        public int compare(final Module m1, final Module m2) {
            final String s1 = m1.name;
            final String s2 = m2.name;
            return s1.compareTo(s2);
        }
    });
    EventManager.register(new ModuleManager());
}

public static void init() throws InstantiationException, IllegalAccessException {
    final Reflections reflections = new Reflections("obsidian.commands", new Scanner[0]);
    final Set<Class<? extends Command>> classes = (Set<Class<? extends Command>>)reflections.getSubTypesOf((Class)Command.class);
    for (final Class<? extends Command> clazz : classes) {
        final Command loadedCommand = (Command)clazz.newInstance();
        if (clazz.isAnnotationPresent(Com.class)) {
            final Com comAnnotation = clazz.getAnnotation(Com.class);
            loadedCommand.names = comAnnotation.names();
            CommandManager.commandList.add(loadedCommand);
        }
    }
    CommandManager.commandList.add(CommandManager.optionCommand);
}

private static Reflections configureReflection(Bundle bundle, ClassLoader classLoader, Scanner... scanners) {
    ConfigurationBuilder configuration = new ConfigurationBuilder();
    configuration.addUrls(resolveLocation(bundle));
    configuration.setScanners(scanners);

    // we add the ability to load classes from the bundle
    configuration.addClassLoader(classLoader);

    LOGGER.debug("Initialized Reflections configuration");

    return new Reflections(configuration);
}

protected void scan(URL url) {
    Vfs.Dir dir = Vfs.fromURL(url);

    try {
        for (final Vfs.File file : dir.getFiles()) {
            // scan if inputs filter accepts file relative path or fqn
            Predicate<String> inputsFilter = configuration.getInputsFilter();
            String path = file.getRelativePath();
            String fqn = path.replace('/', '.');
            if (inputsFilter == null || inputsFilter.apply(path) || inputsFilter.apply(fqn)) {
                Object classObject = null;
                for (Scanner scanner : configuration.getScanners()) {
                    try {
                        if (scanner.acceptsInput(path) || scanner.acceptsInput(fqn)) {
                            classObject = scanner.scan(file, classObject);
                        }
                    } catch (Exception e) {
                        if (log != null) {
                            // SLF4J will filter out Throwables from the format string arguments.
                            log.debug("could not scan file {} in url {} with scanner {}", file.getRelativePath(), url.toExternalForm(), scanner.getClass().getSimpleName(), e);
                        }
                    }
                }
            }
        }
    } finally {
        dir.close();
    }
}

@Override
public Scanner filterResultsBy(Predicate<String> filter) {
    //NO op
    return this;
}

public void execute() throws MojoExecutionException, MojoFailureException {
    //
    if (StringUtils.isEmpty(destinations)) {
        destinations = resolveOutputDirectory() + "/META-INF/reflections/" + getProject().getArtifactId() + "-reflections.xml";
    }

    String outputDirectory = resolveOutputDirectory();
    if (!new File(outputDirectory).exists()) {
        getLog().warn(String.format("Reflections plugin is skipping because %s was not found", outputDirectory));
        return;
    }

    //
    ConfigurationBuilder config = new ConfigurationBuilder();

    config.setUrls(parseUrls());

    if (!isEmpty(includeExclude)) {
        config.filterInputsBy(FilterBuilder.parse(includeExclude));
    }

    config.setScanners(!isEmpty(scanners) ? parseScanners() : new Scanner[]{new SubTypesScanner(), new TypeAnnotationsScanner()});

    if (!isEmpty(serializer)) {
        try {
            Serializer serializerInstance = (Serializer) forName(serializer, "org.reflections.serializers").newInstance();
            config.setSerializer(serializerInstance);

            if (serializerInstance instanceof JavaCodeSerializer) {
                int size = config.getScanners().size();
                config.addScanners(new TypeElementsScanner());
                if (size != config.getScanners().size()) {
                    getLog().info("added type scanners for JavaCodeSerializer");
                }
            }
        } catch (Exception ex) {
            throw new ReflectionsException("could not create serializer instance", ex);
        }
    }

    if (parallel != null && parallel.equals(Boolean.TRUE)) {
        config.useParallelExecutor();
    }

    //
    if (Reflections.log == null) {
        try {
            Reflections.log = new MavenLogAdapter(getLog());
        } catch (Error e) {
            //ignore
        }
    }
    Reflections reflections = new Reflections(config);

    reflections.save(destinations.trim());
}

@Override
public Scanner filterResultsBy(Predicate<String> filter) {
    //NO op
    return this;
}

/** the scanner instances used for scanning different metadata */
Set<Scanner> getScanners();

public ConfigurationBuilder() {
    scanners = Sets.<Scanner>newHashSet(new TypeAnnotationsScanner(), new SubTypesScanner());
    urls = Sets.newHashSet();
}

@Nonnull
   public Set<Scanner> getScanners() {
    return scanners;
}

/** set the scanners instances for scanning different metadata */
public ConfigurationBuilder setScanners(@Nonnull final Scanner... scanners) {
    this.scanners.clear();
    return addScanners(scanners);
}

/** set the scanners instances for scanning different metadata */
public ConfigurationBuilder addScanners(final Scanner... scanners) {
    this.scanners.addAll(Sets.newHashSet(scanners));
    return this;
}

/**
 * a convenient constructor for scanning within a package prefix.
 * <p>this actually create a {@link org.reflections.Configuration} with:
 * <br> - urls that contain resources with name {@code prefix}
 * <br> - filterInputsBy where name starts with the given {@code prefix}
 * <br> - scanners set to the given {@code scanners}, otherwise defaults to {@link org.reflections.scanners.TypeAnnotationsScanner} and {@link org.reflections.scanners.SubTypesScanner}.
 * @param prefix package prefix, to be used with {@link org.reflections.util.ClasspathHelper#forPackage(String, ClassLoader...)} )}
 * @param scanners optionally supply scanners, otherwise defaults to {@link org.reflections.scanners.TypeAnnotationsScanner} and {@link org.reflections.scanners.SubTypesScanner}
 */
public Reflections(final String prefix, @Nullable final Scanner... scanners) {
    this((Object) prefix, scanners);
}

public static String index(Class<? extends Scanner> scannerClass) { return scannerClass.getSimpleName(); }