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Luis Mateo Hincapié Martinez
dc7495e8bd
* Typo corrections * bridge pattern translated to spanish * builder pattern translated to spanish * context-object pattern translated to spanish * converter pattern translated to spanish * dependency injection pattern translated to spanish * factory pattern translated to spanish * factory-kit pattern translated to spanish * factory-method pattern translated to spanish * monostate pattern translated to spanish * multiton pattern translated to spanish * object mother pattern translated to spanish * object pool pattern translated to spanish * property pattern translated to spanish * prototype pattern translated to spanish * registry pattern translated to spanish * step builder pattern translated to spanish * value object pattern translated to spanish * typo corrections and resources urls refactor * grammar corrections * Add image to each pattern --------- Co-authored-by: luismateoh <luismateohm@gmail.com> Co-authored-by: luis.hincapie <luis.hincapie@blankfactor.com>
93 lines
1.9 KiB
Markdown
93 lines
1.9 KiB
Markdown
---
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title: Registry
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category: Creational
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language: es
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tag:
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- Instantiation
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---
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## Propósito
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Almacena los objetos de una única clase y proporciona un punto de acceso global a los mismos.
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Similar al patrón Multiton, la única diferencia es que en un registro no hay restricción en el número de objetos.
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## Explicación
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En pocas palabras
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> El registro es un objeto bien conocido que otros objetos pueden utilizar para encontrar objetos y servicios comunes.
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**Ejemplo Programático**
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A continuación se muestra una clase `Cliente
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```java
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public class Customer {
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private final String id;
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private final String name;
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public Customer(String id, String name) {
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this.id = id;
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this.name = name;
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}
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public String getId() {
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return id;
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}
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public String getName() {
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return name;
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}
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}
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```
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Este registro de los objetos `Customer` es `CustomerRegistry`.
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```java
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public final class CustomerRegistry {
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private static final CustomerRegistry instance = new CustomerRegistry();
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public static CustomerRegistry getInstance() {
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return instance;
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}
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private final Map<String, Customer> customerMap;
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private CustomerRegistry() {
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customerMap = new ConcurrentHashMap<>();
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}
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public Customer addCustomer(Customer customer) {
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return customerMap.put(customer.getId(), customer);
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}
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public Customer getCustomer(String id) {
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return customerMap.get(id);
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}
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}
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```
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## Diagrama de Clases
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## Aplicabilidad
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Usar el patrón Registry cuando
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* El cliente quiere una referencia de algún objeto, por lo que el cliente puede buscar ese objeto en el registro del
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objeto.
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## Consecuencias
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Un gran número de objetos voluminosos añadidos al registro daría lugar a un gran consumo de memoria, ya que los objetos
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del registro no se recogen de la basura.
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## Créditos
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* https://www.martinfowler.com/eaaCatalog/registry.html
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* https://wiki.c2.com/?RegistryPattern
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