Package nonapi.io.github.classgraph.classloaderhandler

Class SpringBootRestartClassLoaderHandler

java.lang.Object

nonapi.io.github.classgraph.classloaderhandler.SpringBootRestartClassLoaderHandler

All Implemented Interfaces:

ClassLoaderHandler

class SpringBootRestartClassLoaderHandler
extends java.lang.Object
implements ClassLoaderHandler

This handler uses nonapi.io.github.classgraph.classloaderhandler.ClassLoaderHandler.DelegationOrder#PARENT_LAST to support the RestartClassLoader of Spring Boot's devtools. RestartClassLoader provides parent last loading for specified URLs (those are all that are supposed to be changed during development). Therefor the handler for that class loader also has to delegate in PARENT_LAST order.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SpringBootRestartClassLoaderHandler()	Class cannot be constructed.

Method Summary

Modifier and Type	Method	Description
static boolean	canHandle(java.lang.Class<?> classLoaderClass, LogNode log)	Check whether this ClassLoaderHandler can handle a given ClassLoader.
static void	findClassLoaderOrder(java.lang.ClassLoader classLoader, ClassLoaderOrder classLoaderOrder, LogNode log)	Find the ClassLoader delegation order for a ClassLoader.
static void	findClasspathOrder(java.lang.ClassLoader classLoader, ClasspathOrder classpathOrder, ScanSpec scanSpec, LogNode log)	Find the classpath entries for the associated ClassLoader.

Methods inherited from class java.lang.Object

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

Constructor Detail

SpringBootRestartClassLoaderHandler

private SpringBootRestartClassLoaderHandler()

Class cannot be constructed.

Method Detail

canHandle

public static boolean canHandle(java.lang.Class<?> classLoaderClass,
                                LogNode log)

Check whether this ClassLoaderHandler can handle a given ClassLoader.

Parameters:

classLoaderClass - the ClassLoader class or one of its superclasses.

log - the log

Returns:

true if this ClassLoaderHandler can handle the ClassLoader.

findClassLoaderOrder

public static void findClassLoaderOrder(java.lang.ClassLoader classLoader,
                                        ClassLoaderOrder classLoaderOrder,
                                        LogNode log)

Find the ClassLoader delegation order for a ClassLoader.

Parameters:

classLoader - the ClassLoader to find the order for.

classLoaderOrder - a ClassLoaderOrder object to update.

log - the log

findClasspathOrder

public static void findClasspathOrder(java.lang.ClassLoader classLoader,
                                      ClasspathOrder classpathOrder,
                                      ScanSpec scanSpec,
                                      LogNode log)

Find the classpath entries for the associated ClassLoader. Spring Boot's RestartClassLoader sits in front of the parent class loader and watches a given set of directories for changes. While those classes are reachable from the parent class loader directly, they should always be loaded through direct access from the RestartClassLoader until it's completely turned of by means of Spring Boot Developer tools. The RestartClassLoader shades only the project classes and additional directories that are configurable, so itself needs access to parent, but last. See: #267, #268

Parameters:

classLoader - the ClassLoader to find the classpath entries order for.

classpathOrder - a ClasspathOrder object to update.

scanSpec - the ScanSpec.

log - the log.