org.apache.bcel
Class Repository

java.lang.Object
  |
  +--org.apache.bcel.Repository

public abstract class Repository

extends java.lang.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.

Version:

$Id: Repository.java,v 1.11 2002/10/11 20:34:47 mdahm Exp $

Author:

M. Dahm

See Also:

Repository, SyntheticRepository

Constructor Summary

Repository()

Method Summary

static JavaClass	addClass(JavaClass clazz) Add clazz to repository if there isn't an equally named class already in there.
static void	clearCache() Clear the repository.
static JavaClass[]	getInterfaces(JavaClass clazz)
static JavaClass[]	getInterfaces(java.lang.String class_name)
static Repository	getRepository()
static JavaClass[]	getSuperClasses(JavaClass clazz)
static JavaClass[]	getSuperClasses(java.lang.String class_name)
static boolean	implementationOf(JavaClass clazz, JavaClass inter)
static boolean	implementationOf(JavaClass clazz, java.lang.String inter)
static boolean	implementationOf(java.lang.String clazz, JavaClass inter)
static boolean	implementationOf(java.lang.String clazz, java.lang.String inter)
static boolean	instanceOf(JavaClass clazz, JavaClass super_class) Equivalent to runtime "instanceof" operator.
static boolean	instanceOf(JavaClass clazz, java.lang.String super_class)
static boolean	instanceOf(java.lang.String clazz, JavaClass super_class)
static boolean	instanceOf(java.lang.String clazz, java.lang.String super_class)
static JavaClass	lookupClass(java.lang.Class clazz) Try to find class source via getResourceAsStream().
static JavaClass	lookupClass(java.lang.String class_name) Lookup class somewhere found on your CLASSPATH, or whereever the repository instance looks for it.
static ClassPath.ClassFile	lookupClassFile(java.lang.String class_name)
static void	removeClass(JavaClass clazz) Remove given class from repository.
static void	removeClass(java.lang.String clazz) Remove class with given (fully qualified) name from repository.
static void	setRepository(Repository rep) Set repository instance to be used for class loading

Methods inherited from class java.lang.Object

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

Constructor Detail

Repository

public Repository()

Method Detail

getRepository

public static Repository getRepository()

Returns:

currently used repository instance

setRepository

public static void setRepository(Repository rep)

Set repository instance to be used for class loading

lookupClass

public static JavaClass lookupClass(java.lang.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, or null if the class could not be found or parsed correctly

lookupClass

public static JavaClass lookupClass(java.lang.Class clazz)

Try to find class source via getResourceAsStream().

Returns:

JavaClass object for given runtime class

See Also:

Class

lookupClassFile

public static ClassPath.ClassFile lookupClassFile(java.lang.String class_name)

Returns:

class file object for given Java class.

clearCache

public static void clearCache()

Clear the repository.

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

removeClass

public static void removeClass(java.lang.String clazz)

Remove class with given (fully qualified) name from repository.

removeClass

public static void removeClass(JavaClass clazz)

Remove given class from repository.

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

getSuperClasses

public static JavaClass[] getSuperClasses(java.lang.String class_name)

Returns:

list of super classes of clazz in ascending order, i.e., Object is always the last element. return "null", if class cannot be found.

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).

getInterfaces

public static JavaClass[] getInterfaces(java.lang.String class_name)

Returns:

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

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

instanceOf

public static boolean instanceOf(java.lang.String clazz,
                                 java.lang.String super_class)

Returns:

true, if clazz is an instance of super_class

instanceOf

public static boolean instanceOf(JavaClass clazz,
                                 java.lang.String super_class)

Returns:

true, if clazz is an instance of super_class

instanceOf

public static boolean instanceOf(java.lang.String clazz,
                                 JavaClass super_class)

Returns:

true, if clazz is an instance of super_class

implementationOf

public static boolean implementationOf(JavaClass clazz,
                                       JavaClass inter)

Returns:

true, if clazz is an implementation of interface inter

implementationOf

public static boolean implementationOf(java.lang.String clazz,
                                       java.lang.String inter)

Returns:

true, if clazz is an implementation of interface inter

implementationOf

public static boolean implementationOf(JavaClass clazz,
                                       java.lang.String inter)

Returns:

true, if clazz is an implementation of interface inter

implementationOf

public static boolean implementationOf(java.lang.String clazz,
                                       JavaClass inter)

Returns:

true, if clazz is an implementation of interface inter