com.vaadin.flow.di.

java.lang.Object
- com.vaadin.flow.di.DefaultInstantiator

All Implemented Interfaces:

Instantiator, Serializable
```
public class DefaultInstantiator
extends Object
implements Instantiator
```
Default instantiator that is used if no other instantiator has been registered. This implementation uses vanilla Java mechanisms such as Class.newInstance() and ServiceLoader.

Since:

1.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

DefaultInstantiator(VaadinService service)
Creates a new instantiator for the given service.

Method Summary

All Methods
Modifier and Type	Method	Description
`<T extends Component> T`	`createComponent(Class<T> componentClass)`	Creates an instance of a component by its `componentClass`.
`I18NProvider`	`getI18NProvider()`	Get the I18NProvider if one has been defined.
`<T> T`	`getOrCreate(Class<T> type)`	Provides an instance of any given type, this is an abstraction that allows to make use of DI-frameworks from add-ons.
`Stream<VaadinServiceInitListener>`	`getServiceInitListeners()`	Gets all service init listeners to use.
`static Stream<VaadinServiceInitListener>`	`getServiceLoaderListeners(ClassLoader classloader)`	Helper for finding service init listeners using `ServiceLoader`.
`boolean`	`init(VaadinService service)`	Initializes this instantiator.

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

Methods inherited from interface com.vaadin.flow.di.Instantiator
createRouteTarget, getBootstrapListeners, getDependencyFilters, getIndexHtmlRequestListeners

- Constructor Detail
  - DefaultInstantiator
```
public DefaultInstantiator(VaadinService service)
```
    Creates a new instantiator for the given service.
    
    Parameters:
    
    service - the service to use
- Method Detail
  - init
```
public boolean init(VaadinService service)
```
    Description copied from interface: Instantiator
    
    Initializes this instantiator. This method is run only once and before running any other method. An implementation can opt-out from being used by returning false. It is recommended that all implementations provide a way for application developers to disable an implementation so that it can be present on the classpath without preventing the application from being deployed in cases when multiple candidates are available.
    
    Specified by:
    
    init in interface Instantiator
    
    Parameters:
    
    service - the Vaadin service for which this instance is initialized
    
    Returns:
    
    true if this instance should be considered as a candidate for usage for the provided service; false to opt-out from the selection process
  - getServiceInitListeners
```
public Stream<VaadinServiceInitListener> getServiceInitListeners()
```
    Description copied from interface: Instantiator
    
    Gets all service init listeners to use. In addition to listeners defined in some way native to a specific instantiator, it is also recommended to support the default ServiceLoader convention. This can be done by including the items from getServiceInitListeners() in the returned stream.
    
    Specified by:
    
    getServiceInitListeners in interface Instantiator
    
    Returns:
    
    stream of service init listeners, not null
  - getOrCreate
```
public <T> T getOrCreate(Class<T> type)
```
    Description copied from interface: Instantiator
    
    Provides an instance of any given type, this is an abstraction that allows to make use of DI-frameworks from add-ons.
    How the object is created and whether it is being cached or not is up to the implementation.
    
    Specified by:
    
    getOrCreate in interface Instantiator
    
    Type Parameters:
    
    T - the type of the instance to create
    
    Parameters:
    
    type - the instance type to create, not null
    
    Returns:
    
    an instance of the given type
  - createComponent
```
public <T extends Component> T createComponent(Class<T> componentClass)
```
    Description copied from interface: Instantiator
    
    Creates an instance of a component by its componentClass.
    
    Specified by:
    
    createComponent in interface Instantiator
    
    Type Parameters:
    
    T - the component type
    
    Parameters:
    
    componentClass - the instance type to create, not null
    
    Returns:
    
    the created instance, not null
  - getServiceLoaderListeners
```
public static Stream<VaadinServiceInitListener> getServiceLoaderListeners(ClassLoader classloader)
```
    Helper for finding service init listeners using ServiceLoader.
    
    Parameters:
    
    classloader - the classloader to use for finding the listeners
    
    Returns:
    
    a stream of service init listeners
  - getI18NProvider
```
public I18NProvider getI18NProvider()
```
    Description copied from interface: Instantiator
    
    Get the I18NProvider if one has been defined.
    
    Specified by:
    
    getI18NProvider in interface Instantiator
    
    Returns:
    
    I18NProvier instance

com.vaadin.flow.di.

Class DefaultInstantiator

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.vaadin.flow.di.Instantiator

Constructor Detail

DefaultInstantiator

Method Detail

init

getServiceInitListeners

getOrCreate

createComponent

getServiceLoaderListeners

getI18NProvider