Package com.itextpdf.commons.utils

Class DIContainer

java.lang.Object

com.itextpdf.commons.utils.DIContainer

       public class DIContainer extends Object
      

A simple dependency injection container.

The container is thread-safe.

Constructor Summary

Constructors

Constructor	Description
DIContainer()	Creates a new instance of DIContainer.

Method Summary

Modifier and Type	Method	Description
T	getInstance(Class clazz)	Gets an instance of a class.
boolean	isRegistered(Class clazz)	Checks if an instance is registered for a class.
void	register(Class clazz, Object inst)	Registers an instance for a class.
static void	registerDefault(Class clazz, Supplier<Object> supplier)	Registers a default instance for a class.

Methods inherited from class java.lang.Object

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

Constructor Details

DIContainer

             public DIContainer()
            

Creates a new instance of DIContainer.

Method Details

registerDefault

             public static void registerDefault
             (Class clazz, Supplier<Object> supplier)
            

Registers a default instance for a class.

Parameters:

clazz - the class

supplier - supplier of the instance

register

             public void register
             (Class clazz, Object inst)
            

Registers an instance for a class.

Parameters:

clazz - the class

inst - the instance

getInstance

             public  T getInstance
             (Class clazz)
            

Gets an instance of a class.

Type Parameters:

T - the type of the class

Parameters:

clazz - the class

Returns:

the instance

isRegistered

             public boolean isRegistered
             (Class clazz)
            

Checks if an instance is registered for a class. If the class is registered but the value is null, it will still return true.

Parameters:

clazz - the class

Returns:

true if an instance is registered, false otherwise