Package com.helix.core.classloader

Class SharedUtilityClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

com.helix.core.classloader.SharedUtilityClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public class SharedUtilityClassLoader
extends URLClassLoader

Singleton shared ClassLoader for common utility classes and shared dependencies.

Serves as the parent ClassLoader for all RuleClassLoader instances to ensure shared classes (such as API contracts, Jackson nodes, and utility classes) are loaded once in Metaspace, avoiding redundant class definitions and reducing memory overhead.

Method Summary

Modifier and Type	Method	Description
static SharedUtilityClassLoader	getInstance()	Retrieves the singleton instance of SharedUtilityClassLoader.
Set<String>	getSharedLoadedClassNames()
Set<String>	getSharedPackages()
boolean	isSharedPackage(String className)	Checks if a given class name falls under the packages shared by this ClassLoader.
protected Class<?>	loadClass(String name, boolean resolve)

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, findClass, findResource, findResources, getPermissions, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Method Details

getInstance

public static SharedUtilityClassLoader getInstance()

Retrieves the singleton instance of SharedUtilityClassLoader.

Returns:

singleton SharedUtilityClassLoader instance

isSharedPackage

public boolean isSharedPackage(String className)

Checks if a given class name falls under the packages shared by this ClassLoader.

Parameters:

className - FQCN to check

Returns:

true if the class belongs to a shared package prefix

loadClass

protected Class<?> loadClass(String name,
 boolean resolve)
                      throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

getSharedLoadedClassNames

public Set<String> getSharedLoadedClassNames()

getSharedPackages

public Set<String> getSharedPackages()