SingletonExtensionFactory

java.lang.Object
- org.pf4j.DefaultExtensionFactory
- - org.pf4j.SingletonExtensionFactory

All Implemented Interfaces:

ExtensionFactory
```
public class SingletonExtensionFactory
extends DefaultExtensionFactory
```
An ExtensionFactory that always returns a specific instance. Optional, you can specify the extension classes for which you want singletons.

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  private java.util.Map<java.lang.String,java.lang.Object> cache
  
  private java.util.List<java.lang.String> extensionClassNames
- Constructor Summary
  
  Constructors
  Constructor Description
  
  SingletonExtensionFactory(java.lang.String... extensionClassNames)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  <T> T create(java.lang.Class<T> extensionClass)
  Creates an extension instance.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - extensionClassNames
```
private final java.util.List<java.lang.String> extensionClassNames
```
  - cache
```
private java.util.Map<java.lang.String,java.lang.Object> cache
```
- Constructor Detail
  - SingletonExtensionFactory
```
public SingletonExtensionFactory(java.lang.String... extensionClassNames)
```
- Method Detail
  - create
```
public <T> T create(java.lang.Class<T> extensionClass)
```
    Description copied from class: DefaultExtensionFactory
    
    Creates an extension instance.
    
    Specified by:
    
    create in interface ExtensionFactory
    
    Overrides:
    
    create in class DefaultExtensionFactory