org.apache.xbean.finder

Class ClassFinder

java.lang.Object

org.apache.xbean.finder.AbstractFinder

org.apache.xbean.finder.ClassFinder

public class ClassFinder
extends AbstractFinder

ClassFinder searches the classpath of the specified classloader for packages, classes, constructors, methods, or fields with specific annotations. For security reasons ASM is used to find the annotations. Classes are not loaded unless they match the requirements of a called findAnnotated* method. Once loaded, these classes are cached. The getClassesNotLoaded() method can be used immediately after any find* method to get a list of classes which matched the find requirements (i.e. contained the annotation), but were unable to be loaded.

Version:

$Rev: 924423 $ $Date: 2010-03-17 20:06:14 +0100 (mer. 17 mars 2010) $

Author:

David Blevins

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.xbean.finder.AbstractFinder

AbstractFinder.Annotatable, AbstractFinder.AnnotationInfo, AbstractFinder.ClassInfo, AbstractFinder.FieldInfo, AbstractFinder.GenericAwareInfoBuildingVisitor, AbstractFinder.Info, AbstractFinder.InfoBuildingVisitor, AbstractFinder.MethodInfo, AbstractFinder.PackageInfo

Field Summary

Fields inherited from class org.apache.xbean.finder.AbstractFinder

classInfos

Constructor Summary

Constructors

Constructor and Description
ClassFinder(Class... classes)
ClassFinder(ClassLoader classLoader) Creates a ClassFinder that will search the urls in the specified classloader excluding the urls in the classloader's parent.
ClassFinder(ClassLoader classLoader, boolean excludeParent) Creates a ClassFinder that will search the urls in the specified classloader.
ClassFinder(ClassLoader classLoader, ClassLoader exclude) Creates a ClassFinder that will search the urls in the specified classloader excluding the urls in the 'exclude' classloader.
ClassFinder(ClassLoader classLoader, Collection<URL> urls)
ClassFinder(ClassLoader classLoader, URL url)
ClassFinder(List<Class> classes)

Method Summary

Methods

Modifier and Type	Method and Description
protected URL	getResource(String className)
protected Class<?>	loadClass(String fixedName)
protected void	readClassDef(String className)

Methods inherited from class org.apache.xbean.finder.AbstractFinder

findAnnotatedClasses, findAnnotatedConstructors, findAnnotatedFields, findAnnotatedMethods, findAnnotatedPackages, findClassesInPackage, findInheritedAnnotatedClasses, getAnnotationInfos, getClassesNotLoaded, isAnnotationPresent, readClassDef

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClassFinder

public ClassFinder(ClassLoader classLoader)
            throws Exception

Creates a ClassFinder that will search the urls in the specified classloader excluding the urls in the classloader's parent. To include the parent classloader, use: new ClassFinder(classLoader, false); To exclude the parent's parent, use: new ClassFinder(classLoader, classLoader.getParent().getParent());

Parameters:

classLoader - source of classes to scan

Throws:

Exception - if something goes wrong

ClassFinder

public ClassFinder(ClassLoader classLoader,
           boolean excludeParent)
            throws Exception

Creates a ClassFinder that will search the urls in the specified classloader.

Parameters:

classLoader - source of classes to scan

excludeParent - Allegedly excludes classes from parent classloader, whatever that might mean

Throws:

Exception - if something goes wrong.

ClassFinder

public ClassFinder(ClassLoader classLoader,
           ClassLoader exclude)
            throws Exception

Creates a ClassFinder that will search the urls in the specified classloader excluding the urls in the 'exclude' classloader.

Parameters:

classLoader - source of classes to scan

exclude - source of classes to exclude from scanning

Throws:

Exception - if something goes wrong

ClassFinder

public ClassFinder(ClassLoader classLoader,
           URL url)

ClassFinder

public ClassFinder(ClassLoader classLoader,
           Collection<URL> urls)

ClassFinder

public ClassFinder(Class... classes)

ClassFinder

public ClassFinder(List<Class> classes)

Method Detail

getResource

protected URL getResource(String className)

Specified by:

getResource in class AbstractFinder

loadClass

protected Class<?> loadClass(String fixedName)
                      throws ClassNotFoundException

Specified by:

loadClass in class AbstractFinder

Throws:

ClassNotFoundException

readClassDef

protected void readClassDef(String className)