Package hudson

Class Lookup

java.lang.Object

hudson.Lookup

public class Lookup
extends Object

Type-safe instance map.

Author:

Kohsuke Kawaguchi

Constructor Summary

Constructors

Constructor	Description
Lookup()

Method Summary

Modifier and Type	Method	Description
<T> T	get(Class<T> type)
<T> T	set(Class<T> type, T instance)
<T> T	setIfNull(Class<T> type, T instance)	Overwrites the value only if the current value is null.

Methods inherited from class java.lang.Object

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

Constructor Details

Lookup

public Lookup()

Method Details

get

public <T> T get(Class<T> type)

set

public <T> T set(Class<T> type,
 T instance)

setIfNull

public <T> T setIfNull(Class<T> type,
 T instance)

Overwrites the value only if the current value is null.

Returns:

If the value was null, return the instance value. Otherwise return the current value, which is non-null.