Package org.apache.bcel.util

Class LruCacheClassPathRepository

java.lang.Object

org.apache.bcel.util.LruCacheClassPathRepository

All Implemented Interfaces:

Repository

public class LruCacheClassPathRepository
extends Object

Maintains a least-recently-used (LRU) cache of JavaClass with maximum size cacheSize.

This repository supports a class path consisting of too many JAR files to handle in ClassPathRepository or MemorySensitiveClassPathRepository without causing OutOfMemoryError.

Since:

6.4.0

Constructor Summary

Constructors

Constructor	Description
LruCacheClassPathRepository(ClassPath path, int cacheSize)

Method Summary

Modifier and Type	Method	Description
void	clear()	Clears all entries from cache.
JavaClass	findClass(String className)	Finds the class with the name provided, if the class isn't there, return NULL.
ClassPath	getClassPath()	Gets the ClassPath associated with this Repository
JavaClass	loadClass(Class<?> clazz)	Finds the JavaClass object for a runtime Class object.
JavaClass	loadClass(String className)	Finds a JavaClass object by name.
void	removeClass(JavaClass javaClass)	Removes class from repository
void	storeClass(JavaClass javaClass)	Stores the provided class under "clazz.getClassName()"

Methods inherited from class java.lang.Object

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

Constructor Details

LruCacheClassPathRepository

public LruCacheClassPathRepository(ClassPath path,
 int cacheSize)

Method Details

clear

public void clear()

Description copied from interface: Repository

Clears all entries from cache.

Specified by:

clear in interface Repository

findClass

public JavaClass findClass(String className)

Description copied from interface: Repository

Finds the class with the name provided, if the class isn't there, return NULL.

Specified by:

findClass in interface Repository

removeClass

public void removeClass(JavaClass javaClass)

Description copied from interface: Repository

Removes class from repository

Specified by:

removeClass in interface Repository

storeClass

public void storeClass(JavaClass javaClass)

Description copied from interface: Repository

Stores the provided class under "clazz.getClassName()"

Specified by:

storeClass in interface Repository

getClassPath

public ClassPath getClassPath()

Description copied from interface: Repository

Gets the ClassPath associated with this Repository

Specified by:

getClassPath in interface Repository

loadClass

public JavaClass loadClass(Class<?> clazz)
                    throws ClassNotFoundException

Finds the JavaClass object for a runtime Class object. If a class with the same name is already in this Repository, the Repository version is returned. Otherwise, getResourceAsStream() is called on the Class object to find the class's representation. If the representation is found, it is added to the Repository.

Specified by:

loadClass in interface Repository

Parameters:

clazz - the runtime Class object

Returns:

JavaClass object for given runtime class

Throws:

ClassNotFoundException - if the class is not in the Repository, and its representation could not be found

See Also:

• Class

loadClass

public JavaClass loadClass(String className)
                    throws ClassNotFoundException

Finds a JavaClass object by name. If it is already in this Repository, the Repository version is returned. Otherwise, the Repository's classpath is searched for the class (and it is added to the Repository if found).

Specified by:

loadClass in interface Repository

Parameters:

className - the name of the class

Returns:

the JavaClass object

Throws:

ClassNotFoundException - if the class is not in the Repository, and could not be found on the classpath