de.lmu.ifi.dbs.elki.utilities

Class InspectionUtil

java.lang.Object

de.lmu.ifi.dbs.elki.utilities.InspectionUtil

public class InspectionUtil
extends Object

A collection of inspection-related utility functions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	InspectionUtil.ClassSorter Sort classes by their class name.
(package private) static class	InspectionUtil.DirClassIterator Class to iterate over a directory tree.

Field Summary

Fields

Modifier and Type	Field and Description
private static WeakHashMap<Class<?>,List<Class<?>>>	CLASS_CACHE Weak hash map for class lookups
private static ClassLoader	CLASSLOADER Class loader
private static String[]	DEFAULT_IGNORES Default package ignores.
static String	FACTORY_POSTFIX Factory class postfix.
private static Logging	LOG Class logger
private static List<Class<?>>	MASTER_CACHE (Non-weak) cache for all "frequently scanned" classes.
static boolean	NONSTATIC_CLASSPATH If we have a non-static classpath, we do more extensive scanning for user extensions.

Constructor Summary

Constructors

Constructor and Description
InspectionUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static List<Class<?>>	cachedFindAllImplementations(Class<?> c) Cached version of "findAllImplementations".
static List<Class<?>>	findAllImplementations(Class<?> c, boolean everything) Find all implementations of a given class in the classpath.
static <C> Class<? extends C>	findImplementation(Class<? super C> restrictionClass, String value) Find an implementation of the given interface / super class, given a relative class name or alias name.
private static List<Class<?>>	slowScan() Perform a full (slow) scan for classes.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final Logging LOG

Class logger

CLASSLOADER

private static final ClassLoader CLASSLOADER

Class loader

DEFAULT_IGNORES

private static final String[] DEFAULT_IGNORES

Default package ignores.

NONSTATIC_CLASSPATH

public static final boolean NONSTATIC_CLASSPATH

If we have a non-static classpath, we do more extensive scanning for user extensions.

FACTORY_POSTFIX

public static final String FACTORY_POSTFIX

Factory class postfix.

See Also:

Constant Field Values

CLASS_CACHE

private static WeakHashMap<Class<?>,List<Class<?>>> CLASS_CACHE

Weak hash map for class lookups

MASTER_CACHE

private static List<Class<?>> MASTER_CACHE

(Non-weak) cache for all "frequently scanned" classes.

Constructor Detail

InspectionUtil

public InspectionUtil()

Method Detail

cachedFindAllImplementations

public static List<Class<?>> cachedFindAllImplementations(Class<?> c)

Cached version of "findAllImplementations". For Parameterizable classes only!

Parameters:

c - Class to scan for

Returns:

Found implementations

findAllImplementations

public static List<Class<?>> findAllImplementations(Class<?> c,
                                    boolean everything)

Find all implementations of a given class in the classpath. Note: returned classes may be abstract.

Parameters:

c - Class restriction

everything - include interfaces, abstract and private classes

Returns:

List of found classes.

findImplementation

public static <C> Class<? extends C> findImplementation(Class<? super C> restrictionClass,
                                        String value)

Find an implementation of the given interface / super class, given a relative class name or alias name.

Parameters:

restrictionClass - Restriction class

value - Class name, relative class name, or nickname.

Returns:

Class found or null

slowScan

private static List<Class<?>> slowScan()

Perform a full (slow) scan for classes.

Returns:

List with the scan result