Topic

java.lang.Object
- aeonics.template.Item<Step.Type>
- - aeonics.entity.Step
  - - aeonics.entity.Step.Action
    - - aeonics.entity.Topic

```
public class Topic
extends Step.Action
```
This class represents a publishing topic for messages. A Queue can subscribe to a topic by providing a binding key. The mechanism to subscribe to a topic depends on the implementation.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class Topic.Type
- Nested classes/interfaces inherited from class aeonics.entity.Step
  Step.Action, Step.Destination, Step.Origin, Step.ROLE, Step.Template

Constructor Summary

Constructors
Constructor Description

Topic()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected java.util.function.Supplier<? extends Topic.Type>`	`defaultCreator()`	Returns the default target entity creator.
`protected java.lang.Class<? extends Topic.Type>`	`defaultTarget()`	Returns the default target entity type.
`Step.Template`	`template()`	Returns the template to build the target entity.

Methods inherited from class aeonics.entity.Step
category

Methods inherited from class aeonics.template.Item
creator, creator, defaultType, from, target, target, type, type

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

- Constructor Detail
  - Topic
```
public Topic()
```
- Method Detail
  - defaultTarget
```
protected java.lang.Class<? extends Topic.Type> defaultTarget()
```
    Description copied from class: Item
    
    Returns the default target entity type. This method should be implemented by subclasses to specify the target entity type.
    
    Overrides:
    
    defaultTarget in class Step.Action
    
    Returns:
    
    the default target entity type
  - defaultCreator
```
protected java.util.function.Supplier<? extends Topic.Type> defaultCreator()
```
    Description copied from class: Item
    
    Returns the default target entity creator. This method should be implemented by subclasses to specify the entity creator.
    
    Overrides:
    
    defaultCreator in class Step.Action
    
    Returns:
    
    the default target entity creator
  - template
```
public Step.Template template()
```
    Description copied from class: Item
    
    Returns the template to build the target entity.
    This method should ultimately be used to provide the final entity template. Although, it may also provide a partial template that subclassed may complement.
    
    Overrides:
    
    template in class Step.Action
    
    Returns:
    
    the matching entity template