org.apache.nifi.util.file.classloader

Class ClassLoaderUtils

java.lang.Object

org.apache.nifi.util.file.classloader.ClassLoaderUtils

public class ClassLoaderUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static org.slf4j.Logger	LOGGER

Constructor Summary

Constructors

Constructor and Description
ClassLoaderUtils()

Method Summary

Modifier and Type	Method and Description
protected static ClassLoader	createModuleClassLoader(URL[] modules, ClassLoader parentClassLoader)
static String	generateAdditionalUrlsFingerprint(Set<URL> urls)
static ClassLoader	getCustomClassLoader(String modulePath, ClassLoader parentClassLoader, FilenameFilter filenameFilter)
private static long	getLastModified(String url)
static URL[]	getURLsForClasspath(Set<String> modulePaths, FilenameFilter filenameFilter, boolean suppressExceptions)
static URL[]	getURLsForClasspath(String modulePath, FilenameFilter filenameFilter, boolean suppressExceptions)
private static boolean	isNotBlank(String value)
protected static URL[]	toURLs(Set<String> modulePaths, FilenameFilter filenameFilter, boolean suppressExceptions)

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

static final org.slf4j.Logger LOGGER

Constructor Detail

ClassLoaderUtils

public ClassLoaderUtils()

Method Detail

getCustomClassLoader

public static ClassLoader getCustomClassLoader(String modulePath,
                                               ClassLoader parentClassLoader,
                                               FilenameFilter filenameFilter)
                                        throws MalformedURLException

Throws:

MalformedURLException

getURLsForClasspath

public static URL[] getURLsForClasspath(String modulePath,
                                        FilenameFilter filenameFilter,
                                        boolean suppressExceptions)
                                 throws MalformedURLException

Parameters:

modulePath - a module path to get URLs from, the module path may be a comma-separated list of paths

filenameFilter - a filter to apply when a module path is a directory and performs a listing, a null filter will return all matches

suppressExceptions - indicates whether to suppress exceptions

Returns:

an array of URL instances representing all of the modules resolved from processing modulePath

Throws:

MalformedURLException - if a module path does not exist

getURLsForClasspath

public static URL[] getURLsForClasspath(Set<String> modulePaths,
                                        FilenameFilter filenameFilter,
                                        boolean suppressExceptions)
                                 throws MalformedURLException

Parameters:

modulePaths - one or modules paths to get URLs from, each module path may be a comma-separated list of paths

filenameFilter - a filter to apply when a module path is a directory and performs a listing, a null filter will return all matches

suppressExceptions - if true then all modules will attempt to be resolved even if some throw an exception, if false the first exception will be thrown

Returns:

an array of URL instances representing all of the modules resolved from processing modulePaths

Throws:

MalformedURLException - if a module path does not exist

isNotBlank

private static boolean isNotBlank(String value)

toURLs

protected static URL[] toURLs(Set<String> modulePaths,
                              FilenameFilter filenameFilter,
                              boolean suppressExceptions)
                       throws MalformedURLException

Throws:

MalformedURLException

generateAdditionalUrlsFingerprint

public static String generateAdditionalUrlsFingerprint(Set<URL> urls)

getLastModified

private static long getLastModified(String url)

createModuleClassLoader

protected static ClassLoader createModuleClassLoader(URL[] modules,
                                                     ClassLoader parentClassLoader)