de.lmu.ifi.dbs.elki.utilities

Class ELKIServiceLoader

java.lang.Object

de.lmu.ifi.dbs.elki.utilities.ELKIServiceLoader

All Implemented Interfaces:

Iterator<Class<?>>

public class ELKIServiceLoader
extends Object
implements Iterator<Class<?>>

Class that emulates the behavior of an java ServiceLoader, except that the classes are not automatically instantiated. This is more lazy, but also we need to do the instantiations our way with the parameterizable API.

Field Summary

Fields

Modifier and Type	Field and Description
private ClassLoader	cl Classloader
static char	COMMENT_CHAR Comment character
private Enumeration<URL>	configfiles Enumeration of configuration files
private Iterator<Class<?>>	curiter Current iterator
private static Logging	LOG Class logger.
private Class<?>	nextclass Next class to return
private Class<?>	parent Parent class
static String	PREFIX Prefix for the ELKI functionality discovery.

Constructor Summary

Constructors

Constructor and Description
ELKIServiceLoader(Class<?> parent) Constructor, using the system class loader.
ELKIServiceLoader(Class<?> parent, ClassLoader cl) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
private void	getServiceFiles(Class<?> parent) Get services files for a given class.
boolean	hasNext()
Class<?>	next()
private Iterator<Class<?>>	parseFile(URL nextElement)
private boolean	parseLine(String line, ArrayList<Class<?>> classes, URL nextElement)
void	remove()

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.

PREFIX

public static final String PREFIX

Prefix for the ELKI functionality discovery.

See Also:

Constant Field Values

COMMENT_CHAR

public static final char COMMENT_CHAR

Comment character

See Also:

Constant Field Values

parent

private Class<?> parent

Parent class

cl

private ClassLoader cl

Classloader

configfiles

private Enumeration<URL> configfiles

Enumeration of configuration files

curiter

private Iterator<Class<?>> curiter

Current iterator

nextclass

private Class<?> nextclass

Next class to return

Constructor Detail

ELKIServiceLoader

public ELKIServiceLoader(Class<?> parent,
                 ClassLoader cl)

Constructor.

Parameters:

parent - Parent class

cl - Classloader to use

ELKIServiceLoader

public ELKIServiceLoader(Class<?> parent)

Constructor, using the system class loader.

Parameters:

parent - Parent class

Method Detail

getServiceFiles

private void getServiceFiles(Class<?> parent)

Get services files for a given class.

Parameters:

parent - Parent class

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Class<?>>

parseFile

private Iterator<Class<?>> parseFile(URL nextElement)

parseLine

private boolean parseLine(String line,
                ArrayList<Class<?>> classes,
                URL nextElement)

next

public Class<?> next()

Specified by:

next in interface Iterator<Class<?>>

remove

public void remove()

Specified by:

remove in interface Iterator<Class<?>>