Package com.avrix.plugin

Class PluginClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

com.avrix.plugin.PluginClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class PluginClassLoader
extends URLClassLoader

A custom class loader for loading plugin classes. Extends URLClassLoader to provide functionality for loading classes from a URL, such as a JAR file.

This class loader is specifically designed to work with plugins, allowing classes to be dynamically loaded and accessed during runtime. It also includes a method to check if a class has already been loaded, which helps prevent duplicate loading of the same class.

Constructor Summary

Constructors

Constructor	Description
PluginClassLoader(String pluginId, URL[] urls, ClassLoader classLoader)	Constructs a new PluginClassLoader for the specified URLs using the specified parent class loader.

Method Summary

Modifier and Type	Method	Description
Class<?>	findLoaded(String name)	Finds a loaded class by name.
static Class<?>	getClassByName(String name)	Retrieves the Class object for a given class name from the cache or loaders.
Set<String>	getClasses()	Retrieves the set of loaded class names.

Methods inherited from class java.net.URLClassLoader

close, findResource, findResources, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, getDefinedPackage, getDefinedPackages, getName, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus

Methods inherited from class java.lang.Object

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

Constructor Details

PluginClassLoader

public PluginClassLoader(String pluginId,
 URL[] urls,
 ClassLoader classLoader)

Constructs a new PluginClassLoader for the specified URLs using the specified parent class loader.

Parameters:

pluginId - ID of the plugin being loaded, according to data from Metadata.

urls - The URLs from which to load classes and resources.

classLoader - parent ClassLoader.

Method Details

findLoaded

public Class<?> findLoaded(String name)

Finds a loaded class by name. This method is used to check if a class has already been loaded by this class loader.

Parameters:

name - The fully qualified name of the desired Class.

Returns:

The Class object, or null if the class has not been loaded.

getClassByName

public static Class<?> getClassByName(String name)

Retrieves the Class object for a given class name from the cache or loaders. If the class is not found in the cache, searches through all loaders to find the class.

Parameters:

name - The fully qualified name of the desired class.

Returns:

The Class object corresponding to the specified name, or null if the class could not be found.

getClasses

public Set<String> getClasses()

Retrieves the set of loaded class names.

Returns:

A set containing the names of the loaded classes.