org.apache.tomcat.util.bcel.classfile.ClassParser Java Examples

The following examples show how to use org.apache.tomcat.util.bcel.classfile.ClassParser. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ContextConfig.java    From Tomcat8-Source-Read with MIT License 5 votes vote down vote up 
protected void processAnnotationsStream(InputStream is, WebXml fragment,
        boolean handlesTypesOnly, Map<String,JavaClassCacheEntry> javaClassCache)
        throws ClassFormatException, IOException {

    ClassParser parser = new ClassParser(is);
    JavaClass clazz = parser.parse();
    checkHandlesTypes(clazz, javaClassCache);

    if (handlesTypesOnly) {
        return;
    }

    processClass(fragment, clazz);
}
Example #2
Source File: TesterPerformance.java    From Tomcat8-Source-Read with MIT License 5 votes vote down vote up 
@Test
public void testClassParserPerformance() throws IOException {
    File libDir = new File(JAR_LOCATION);
    String[] libs = libDir.list();

    Assert.assertNotNull(libs);

    Set<URL> jarURLs = new HashSet<>();

    for (String lib : libs) {
        if (!lib.toLowerCase(Locale.ENGLISH).endsWith(".jar")) {
            continue;
        }
        jarURLs.add(new URL("jar:" + new File (libDir, lib).toURI().toURL().toExternalForm() + "!/"));
    }

    long duration = 0;

    for (URL jarURL : jarURLs) {
        try (Jar jar = JarFactory.newInstance(jarURL)) {
            jar.nextEntry();
            String jarEntryName = jar.getEntryName();
            while (jarEntryName != null) {
                if (jarEntryName.endsWith(".class")) {
                    InputStream is = jar.getEntryInputStream();
                    long start = System.nanoTime();
                    ClassParser cp = new ClassParser(is);
                    cp.parse();
                    duration += System.nanoTime() - start;
                }
                jar.nextEntry();
                jarEntryName = jar.getEntryName();
            }
        }
    }

    System.out.println("ClassParser performance test took: " + duration + " ns");
}
Example #3
Source File: ContextConfig.java    From Tomcat7.0.67 with Apache License 2.0 5 votes vote down vote up 
protected void processAnnotationsStream(InputStream is, WebXml fragment,
        boolean handlesTypesOnly)
        throws ClassFormatException, IOException {

    ClassParser parser = new ClassParser(is);
    JavaClass clazz = parser.parse();
    checkHandlesTypes(clazz);

    if (handlesTypesOnly) {
        return;
    }

    String className = clazz.getClassName();

    AnnotationEntry[] annotationsEntries = clazz.getAnnotationEntries();
    if (annotationsEntries != null) {
        for (AnnotationEntry ae : annotationsEntries) {
            String type = ae.getAnnotationType();
            if ("Ljavax/servlet/annotation/WebServlet;".equals(type)) {
                processAnnotationWebServlet(className, ae, fragment);
            }else if ("Ljavax/servlet/annotation/WebFilter;".equals(type)) {
                processAnnotationWebFilter(className, ae, fragment);
            }else if ("Ljavax/servlet/annotation/WebListener;".equals(type)) {
                fragment.addListener(className);
            } else {
                // Unknown annotation - ignore
            }
        }
    }
}
Example #4
Source File: MeecrowaveContextConfig.java    From openwebbeans-meecrowave with Apache License 2.0 5 votes vote down vote up 
@Override
protected void processClasses(final WebXml webXml, final Set<WebXml> orderedFragments) {
    final ClassLoader loader = context.getLoader().getClassLoader();
    orderedFragments.forEach(fragment -> {
        final WebXml annotations = new WebXml();
        annotations.setDistributable(true);
        final URL url = fragment.getURL();
        String urlString = url.toExternalForm();
        Collection<Class<?>> classes = webClasses.get(urlString);
        if (classes == null) { // mainly java 11, no need on java 8
            if (urlString.startsWith("file:") && urlString.endsWith("jar")) {
                urlString = "jar:" + urlString + "!/";
            } else {
                return;
            }
            classes = webClasses.get(urlString);
            if (classes == null) {
                return;
            }
        }
        classes.forEach(clazz -> {
            try (final InputStream stream = loader.getResourceAsStream(clazz.getName().replace('.', '/') + ".class")) {
                processClass(annotations, new ClassParser(stream).parse());
            } catch (final IOException e) {
                new LogFacade(MeecrowaveContextConfig.class.getName()).error("Can't parse " + clazz);
            }
        });
        fragment.merge(singleton(annotations));
    });
}
Example #5
Source File: TesterPerformance.java    From Tomcat7.0.67 with Apache License 2.0 4 votes vote down vote up 
@Test
public void testClassParserPerformance() throws IOException {
    File libDir = new File(JAR_LOCATION);
    String[] libs = libDir.list();

    Assert.assertNotNull(libs);

    Set<URL> jarURLs = new HashSet<URL>();

    for (String lib : libs) {
        if (!lib.toLowerCase(Locale.ENGLISH).endsWith(".jar")) {
            continue;
        }
        jarURLs.add(new URL("jar:" + new File (libDir, lib).toURI().toURL().toExternalForm() + "!/"));
    }

    long duration = 0;

    for (URL jarURL : jarURLs) {
        Jar jar = JarFactory.newInstance(jarURL);
        try {
            jar.nextEntry();
            String jarEntryName = jar.getEntryName();
            while (jarEntryName != null) {
                if (jarEntryName.endsWith(".class")) {
                    InputStream is = jar.getEntryInputStream();
                    long start = System.nanoTime();
                    ClassParser cp = new ClassParser(is);
                    cp.parse();
                    duration += System.nanoTime() - start;
                }
                jar.nextEntry();
                jarEntryName = jar.getEntryName();
            }
        } finally {
            jar.close();
        }
    }

    System.out.println("ClassParser performance test took: " + duration + " ns");
}
Example #6
Source File: TesterPerformance.java    From tomcatsrc with Apache License 2.0 4 votes vote down vote up 
@Test
public void testClassParserPerformance() throws IOException {
    File libDir = new File(JAR_LOCATION);
    String[] libs = libDir.list();

    Assert.assertNotNull(libs);

    Set<URL> jarURLs = new HashSet<URL>();

    for (String lib : libs) {
        if (!lib.toLowerCase(Locale.ENGLISH).endsWith(".jar")) {
            continue;
        }
        jarURLs.add(new URL("jar:" + new File (libDir, lib).toURI().toURL().toExternalForm() + "!/"));
    }

    long duration = 0;

    for (URL jarURL : jarURLs) {
        Jar jar = JarFactory.newInstance(jarURL);
        try {
            jar.nextEntry();
            String jarEntryName = jar.getEntryName();
            while (jarEntryName != null) {
                if (jarEntryName.endsWith(".class")) {
                    InputStream is = jar.getEntryInputStream();
                    long start = System.nanoTime();
                    ClassParser cp = new ClassParser(is);
                    cp.parse();
                    duration += System.nanoTime() - start;
                }
                jar.nextEntry();
                jarEntryName = jar.getEntryName();
            }
        } finally {
            jar.close();
        }
    }

    System.out.println("ClassParser performance test took: " + duration + " ns");
}