org.apache.bcel

Class Repository

public abstract class Repository extends Object

The repository maintains informations about class interdependencies, e.g., whether a class is a sub-class of another. Delegates actual class loading to SyntheticRepository with current class path by default.

See Also: Repository

Method Summary
static JavaClassaddClass(JavaClass clazz)
Add clazz to repository if there isn't an equally named class already in there.
static voidclearCache()
Clear the repository.
static JavaClass[]getInterfaces(JavaClass clazz)
static JavaClass[]getInterfaces(String class_name)
static RepositorygetRepository()
static JavaClass[]getSuperClasses(JavaClass clazz)
static JavaClass[]getSuperClasses(String class_name)
static booleanimplementationOf(JavaClass clazz, JavaClass inter)
static booleanimplementationOf(String clazz, String inter)
static booleanimplementationOf(JavaClass clazz, String inter)
static booleanimplementationOf(String clazz, JavaClass inter)
static booleaninstanceOf(JavaClass clazz, JavaClass super_class)
Equivalent to runtime "instanceof" operator.
static booleaninstanceOf(String clazz, String super_class)
static booleaninstanceOf(JavaClass clazz, String super_class)
static booleaninstanceOf(String clazz, JavaClass super_class)
static JavaClasslookupClass(String class_name)
Lookup class somewhere found on your CLASSPATH, or whereever the repository instance looks for it.
static JavaClasslookupClass(Class clazz)
Try to find class source using the internal repository instance.
static ClassPath.ClassFilelookupClassFile(String class_name)
static voidremoveClass(String clazz)
Remove class with given (fully qualified) name from repository.
static voidremoveClass(JavaClass clazz)
Remove given class from repository.
static voidsetRepository(Repository rep)
Set repository instance to be used for class loading

Method Detail

addClass

public static JavaClass addClass(JavaClass clazz)
Add clazz to repository if there isn't an equally named class already in there.

Returns: old entry in repository

clearCache

public static void clearCache()
Clear the repository.

getInterfaces

public static JavaClass[] getInterfaces(JavaClass clazz)

Returns: all interfaces implemented by class and its super classes and the interfaces that those interfaces extend, and so on. (Some people call this a transitive hull).

Throws: ClassNotFoundException if any of the class's superclasses or superinterfaces can't be found

getInterfaces

public static JavaClass[] getInterfaces(String class_name)

Returns: all interfaces implemented by class and its super classes and the interfaces that extend those interfaces, and so on

Throws: ClassNotFoundException if the named class can't be found, or if any of its superclasses or superinterfaces can't be found

getRepository

public static Repository getRepository()

Returns: currently used repository instance

getSuperClasses

public static JavaClass[] getSuperClasses(JavaClass clazz)

Returns: list of super classes of clazz in ascending order, i.e., Object is always the last element

Throws: ClassNotFoundException if any of the superclasses can't be found

getSuperClasses

public static JavaClass[] getSuperClasses(String class_name)

Returns: list of super classes of clazz in ascending order, i.e., Object is always the last element.

Throws: ClassNotFoundException if the named class or any of its superclasses can't be found

implementationOf

public static boolean implementationOf(JavaClass clazz, JavaClass inter)

Returns: true, if clazz is an implementation of interface inter

Throws: ClassNotFoundException if any superclasses or superinterfaces of clazz can't be found

implementationOf

public static boolean implementationOf(String clazz, String inter)

Returns: true, if clazz is an implementation of interface inter

Throws: ClassNotFoundException if clazz, inter, or any superclasses or superinterfaces of clazz can't be found

implementationOf

public static boolean implementationOf(JavaClass clazz, String inter)

Returns: true, if clazz is an implementation of interface inter

Throws: ClassNotFoundException if inter or any superclasses or superinterfaces of clazz can't be found

implementationOf

public static boolean implementationOf(String clazz, JavaClass inter)

Returns: true, if clazz is an implementation of interface inter

Throws: ClassNotFoundException if clazz or any superclasses or superinterfaces of clazz can't be found

instanceOf

public static boolean instanceOf(JavaClass clazz, JavaClass super_class)
Equivalent to runtime "instanceof" operator.

Returns: true, if clazz is an instance of super_class

Throws: ClassNotFoundException if any superclasses or superinterfaces of clazz can't be found

instanceOf

public static boolean instanceOf(String clazz, String super_class)

Returns: true, if clazz is an instance of super_class

Throws: ClassNotFoundException if either clazz or super_class can't be found

instanceOf

public static boolean instanceOf(JavaClass clazz, String super_class)

Returns: true, if clazz is an instance of super_class

Throws: ClassNotFoundException if super_class can't be found

instanceOf

public static boolean instanceOf(String clazz, JavaClass super_class)

Returns: true, if clazz is an instance of super_class

Throws: ClassNotFoundException if clazz can't be found

lookupClass

public static JavaClass lookupClass(String class_name)
Lookup class somewhere found on your CLASSPATH, or whereever the repository instance looks for it.

Returns: class object for given fully qualified class name

Throws: ClassNotFoundException if the class could not be found or parsed correctly

lookupClass

public static JavaClass lookupClass(Class clazz)
Try to find class source using the internal repository instance.

Returns: JavaClass object for given runtime class

Throws: ClassNotFoundException if the class could not be found or parsed correctly

See Also: Class

lookupClassFile

public static ClassPath.ClassFile lookupClassFile(String class_name)

Returns: class file object for given Java class by looking on the system class path; returns null if the class file can't be found

removeClass

public static void removeClass(String clazz)
Remove class with given (fully qualified) name from repository.

removeClass

public static void removeClass(JavaClass clazz)
Remove given class from repository.

setRepository

public static void setRepository(Repository rep)
Set repository instance to be used for class loading