Example usage for com.google.common.reflect ClassPath getTopLevelClasses

Introduction

In this page you can find the example usage for com.google.common.reflect ClassPath getTopLevelClasses.

Prototype

public ImmutableSet<ClassInfo> getTopLevelClasses(String packageName)

Source Link

Document

Returns all top level classes whose package name is packageName .

Usage

From source file:com.analog.lyric.collect.ConstructorRegistry.java

/**
 * Preloads all subclasses of declared superclass {@code T} found in registry's packages.
 * <p>//from w w w  .jav  a 2 s .  co m
 * Searches all of the packages in {@link #getPackages()} for subclasses of {@code T} and adds
 * then to the registry.
 * <p>
 * 
 * @since 0.07
 */
public synchronized void loadAll() {
    ClassLoader loader = getClass().getClassLoader();

    ClassPath path;
    try {
        path = ClassPath.from(loader);
    } catch (IOException ex) {
        throw new RuntimeException(ex);
    }
    for (String packageName : _packages) {
        for (ClassPath.ClassInfo info : path.getTopLevelClasses(packageName)) {
            addConstructorsFrom(info.load(), true);
        }
    }
}

From source file:org.eclipse.m2e.editor.xml.mojo.PlexusConfigHelper.java

@SuppressWarnings({ "rawtypes", "unchecked" })
public List<Class> getCandidateClasses(ClassRealm realm, Class enclosingClass, Class paramClass) {

    String name = enclosingClass.getName();
    int dot = name.lastIndexOf('.');
    if (dot > 0) {
        String pkg = name.substring(0, dot);

        List<Class> candidateClasses = null;

        ClassPath cp;
        try {/*  w  w  w  .j a  v a 2 s .c om*/
            cp = ClassPath.from(realm);
        } catch (IOException e) {
            log.error(e.getMessage());
            return Collections.singletonList(enclosingClass);
        }

        for (ClassInfo ci : cp.getTopLevelClasses(pkg)) {
            Class clazz;
            try {
                clazz = realm.loadClass(ci.getName());
            } catch (ClassNotFoundException e) {
                log.error(e.getMessage(), e);
                continue;
            }

            if ((clazz.getModifiers() & (Modifier.ABSTRACT)) != 0) {
                continue;
            }

            if (!paramClass.isAssignableFrom(clazz)) {
                continue;
            }

            // skip classes without no-arg constructors
            try {
                clazz.getConstructor(new Class[0]);
            } catch (NoSuchMethodException ex) {
                continue;
            }

            if (candidateClasses == null) {
                candidateClasses = new ArrayList<Class>();
            }
            candidateClasses.add(clazz);

        }

        if (candidateClasses != null) {
            return candidateClasses;
        }
    }

    return Collections.singletonList(paramClass);
}