Module org.dellroad.jct.jshell

Package org.dellroad.jct.jshell

Class MemoryLoaderDelegate

java.lang.Object

org.dellroad.jct.jshell.MemoryLoaderDelegate

All Implemented Interfaces:

LoaderDelegate

public class MemoryLoaderDelegate
extends Object
implements LoaderDelegate

A JShell LoaderDelegate that uses a MemoryClassLoader.

This class accepts --class-path components that refer to JAR file contents using the jar: URL syntax, e.g., jar:file:/some/dir/foo.jar!/BOOT-INF/lib/bar.jar. However, this is only partially useful because (a) you can't build a classpath with components that contain colon characters, and (b) the jshell tool rejects classpath components that aren't real files.

Constructor Summary

Constructors

Constructor	Description
MemoryLoaderDelegate()	Default constructor.
MemoryLoaderDelegate(org.dellroad.stuff.java.MemoryClassLoader loader)	Primary constructor.

Method Summary

Modifier and Type	Method	Description
void	addToClasspath(String path)
void	classesRedefined(ExecutionControl.ClassBytecodes[] classes)
Class<?>	findClass(String className)
org.dellroad.stuff.java.MemoryClassLoader	getClassLoader()	Get the MemoryClassLoader associated with this instance.
void	load(ExecutionControl.ClassBytecodes[] classes)

Methods inherited from class java.lang.Object

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

Constructor Details

MemoryLoaderDelegate

public MemoryLoaderDelegate()

Default constructor.

Uses the current thread's context loader as the parent loader for a newly created MemoryClassLoader.

MemoryLoaderDelegate

public MemoryLoaderDelegate(org.dellroad.stuff.java.MemoryClassLoader loader)

Primary constructor.

Parameters:

loader - associated class loader

Throws:

IllegalArgumentException - if loader is null

Method Details

getClassLoader

public org.dellroad.stuff.java.MemoryClassLoader getClassLoader()

Get the MemoryClassLoader associated with this instance.

Returns:

associated class loader

addToClasspath

public void addToClasspath(String path)
                    throws ExecutionControl.EngineTerminationException,
ExecutionControl.InternalException

Specified by:

addToClasspath in interface LoaderDelegate

Throws:

ExecutionControl.EngineTerminationException

ExecutionControl.InternalException

classesRedefined

public void classesRedefined(ExecutionControl.ClassBytecodes[] classes)

Specified by:

classesRedefined in interface LoaderDelegate

findClass

public Class<?> findClass(String className)
                   throws ClassNotFoundException

Specified by:

findClass in interface LoaderDelegate

Throws:

ClassNotFoundException

load

public void load(ExecutionControl.ClassBytecodes[] classes)
          throws ExecutionControl.ClassInstallException,
ExecutionControl.EngineTerminationException

Specified by:

load in interface LoaderDelegate

Throws:

ExecutionControl.ClassInstallException

ExecutionControl.EngineTerminationException