io.brooklyn.camp.brooklyn.spi.dsl

Class BrooklynDslDeferredSupplier<T>

java.lang.Object

io.brooklyn.camp.brooklyn.spi.dsl.BrooklynDslDeferredSupplier<T>

All Implemented Interfaces:

brooklyn.management.TaskFactory<brooklyn.management.Task<T>>, DeferredSupplier<T>, com.google.common.base.Supplier<T>

Direct Known Subclasses:

DslComponent

public abstract class BrooklynDslDeferredSupplier<T>
extends Object
implements DeferredSupplier<T>, brooklyn.management.TaskFactory<brooklyn.management.Task<T>>

provide an object suitable to resolve chained invocations in a parsed YAML / Deployment Plan DSL, which also implements DeferredSupplier so that they can be resolved when needed (e.g. when entity-lookup and execution contexts are available).

implementations of this abstract class are expected to be immutable, as instances must support usage in multiple Assembly instances created from a single AssemblyTemplate

subclasses which return a deferred value are typically only resolvable in the context of a Task on an Entity; these should be only used as the value of a ConfigKey set in the YAML, and should not accessed until after the components / entities are created and are being started. (TODO the precise semantics of this are under development.)

Field Summary

Fields

Modifier and Type	Field and Description
Object	dsl

Constructor Summary

Constructors

Constructor and Description
BrooklynDslDeferredSupplier()

Method Summary

Methods

Modifier and Type	Method and Description
protected EntityInternal	entity() returns the current entity; for use in implementations of get()
T	get()
abstract brooklyn.management.Task<T>	newTask()

Methods inherited from class java.lang.Object

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

Field Detail

dsl

public final Object dsl

Constructor Detail

BrooklynDslDeferredSupplier

public BrooklynDslDeferredSupplier()

Method Detail

entity

protected final EntityInternal entity()

returns the current entity; for use in implementations of get()

get

public final T get()

Specified by:

get in interface DeferredSupplier<T>

Specified by:

get in interface com.google.common.base.Supplier<T>

newTask

public abstract brooklyn.management.Task<T> newTask()

Specified by:

newTask in interface brooklyn.management.TaskFactory<brooklyn.management.Task<T>>