BeanScheduler

java.lang.Object
- org.eclipse.sisu.bean.BeanScheduler

Direct Known Subclasses:

LifecycleManager, PlexusLifecycleManager
```
public abstract class BeanScheduler
extends java.lang.Object
```
Schedules safe activation of beans even when cyclic dependencies are involved.
Takes advantage of the new Guice ProvisionListener SPI, if available at runtime.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`(package private) static class`	`BeanScheduler.CycleActivator`	Listens to provisioning events in order to determine safe activation points.
`private class`	`BeanScheduler.Pending`	Collects pending beans waiting for activation.

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) static java.lang.Object`	`CANDIDATE_CYCLE`
`(package private) static java.lang.Object`	`CYCLE_ACTIVATOR`
`(package private) static java.lang.Object`	`CYCLE_CONFIRMED`
`static com.google.inject.Module`	`MODULE`	Enables deferred activation of component cycles, only needed in legacy systems like Plexus.
`(package private) static java.lang.ThreadLocal<java.lang.Object[]>`	`pendingHolder`

Constructor Summary

Constructors
Constructor Description

BeanScheduler()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract void`	`activate(java.lang.Object bean)`	Customized activation of the given bean.
`static void`	`detectCycle(java.lang.Object value)`	Detects if a dependency cycle exists and activation needs to be deferred.
`void`	`schedule(java.lang.Object bean)`	Schedules activation of the given bean at the next safe activation point.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CYCLE_ACTIVATOR
```
static final java.lang.Object CYCLE_ACTIVATOR
```
  - CANDIDATE_CYCLE
```
static final java.lang.Object CANDIDATE_CYCLE
```
  - CYCLE_CONFIRMED
```
static final java.lang.Object CYCLE_CONFIRMED
```
  - MODULE
```
public static final com.google.inject.Module MODULE
```
    Enables deferred activation of component cycles, only needed in legacy systems like Plexus.
  - pendingHolder
```
static final java.lang.ThreadLocal<java.lang.Object[]> pendingHolder
```
- Constructor Detail
  - BeanScheduler
```
public BeanScheduler()
```
- Method Detail
  - detectCycle
```
public static void detectCycle(java.lang.Object value)
```
    Detects if a dependency cycle exists and activation needs to be deferred.
  - schedule
```
public final void schedule(java.lang.Object bean)
```
    Schedules activation of the given bean at the next safe activation point.
    
    Parameters:
    
    bean - The managed bean
  - activate
```
protected abstract void activate(java.lang.Object bean)
```
    Customized activation of the given bean.
    
    Parameters:
    
    bean - The bean to activate