org.yarnandtail.andhow.service

Class InitLoader

java.lang.Object

org.yarnandtail.andhow.service.InitLoader

Direct Known Subclasses:

TestInitLoader

public class InitLoader
extends Object

Dedicated wrapper for a java.util.ServiceLoader that loads InitLoader instances. InitLoader instances are discovered automatically at compile time. If a TestInitLoader is found, it takes precedence over an InitLoader instance.

Author:

ericeverman

Constructor Summary

Constructors

Constructor and Description
InitLoader()
InitLoader(ClassLoader classLoader)

Method Summary

Modifier and Type	Method and Description
AndHowConfiguration	getAndHowConfiguration(AndHowConfiguration defaultConfig) Returns an AndHowConfiguration from an AndHowInit instance from the service loader, or if not found, the default one passed in.
List<AndHowInit>	getInitInstances() Returns all the AndHowInit instances found by the service loader.
boolean	hasConfig() Returns true if there are any AndHowInit instances available from the loader, even if more than one.
boolean	isValidState() Returns true if there are no more than 1 production init and 1 test init.
void	reload() Forces a reload of the service loader, which normally caches instances.

Methods inherited from class java.lang.Object

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

Constructor Detail

InitLoader

public InitLoader()

InitLoader

public InitLoader(ClassLoader classLoader)

Method Detail

isValidState

public boolean isValidState()

Returns true if there are no more than 1 production init and 1 test init.

Returns:

hasConfig

public boolean hasConfig()

Returns true if there are any AndHowInit instances available from the loader, even if more than one.

Returns:

getAndHowConfiguration

public AndHowConfiguration getAndHowConfiguration(AndHowConfiguration defaultConfig)

Returns an AndHowConfiguration from an AndHowInit instance from the service loader, or if not found, the default one passed in. The service loader instance if found if there is exactly one instance found, otherwise the defaultConfig is used. isValidState will return false if there is more than one instance found by the service loader.

Parameters:

defaultConfig - Config to use if no AndHowInit is found to provide one.

Returns:

getInitInstances

public List<AndHowInit> getInitInstances()

Returns all the AndHowInit instances found by the service loader.

Returns:

reload

public void reload()

Forces a reload of the service loader, which normally caches instances.