Add Facede and Singletons

README.md

@@ -15,4 +15,5 @@ Project that implements some design patterns using Java 13.
 - Interpreter
 - Visitor
 - Bridges and Adapters
-- Command
+- Command
+- Facades and Singletons

src/facadesAndSingletons/Annotation.txt

@@ -0,0 +1,76 @@
+###############################
+#           Facade            #
+###############################
+
+
+
+
+
+##### Language - EN
+
+- We created a "Facade" to abstract complex implementations, the external system instead of knowing several classes of my system,
+he will only know the 'Facade', that way it will be easier to use.
+
+- A Facede serves as a single front for the services provided by one or more sub-systems,
+  providing a simpler way for your consumption.
+
+##### Language - PT-BR
+
+- Nós criamos uma "Fachada" para abstrair implementações complexas, o sistema externa ao invés dele conhecer várias classes do meu sistema,
+ele irá conhecer apenas a 'Fachada', dessa forma facilita na utilização.
+
+- Uma Facede serve como uma frente única para os serviços disponibilizados por um ou mais sub-sistemas,
+ provendo uma maneira mais simples para o seu consumo.
+
+
+
+###############################
+#         Singletons          #
+###############################
+
+
+
+
+
+##### Language - EN
+
+- It is the creation of a single instance for our entire application, it is as if it were a global object;
+
+- In my system, there will be a single instance of that object;
+
+
+##### Language - PT-BR
+
+- É a criação de uma única instancia para a nossa apliação toda, é como se fosse um objeto global;
+
+- No meu sistema, terá uma única instancia desse objeto;
+
+
+
+
+
+###############################
+#    Weaknesses X Strong      #
+###############################
+
+
+
+##### Language - EN
+
+- Singleton is the same problem that we have when using a global variable;
+
+- Facede we have a problem of our class being immense, with many things in it;
+
+
+##### Language - PT-BR
+
+- Singleton é o mesmo problema que temos quando usamos uma variavel global;
+
+- Facede temos um problema da nossa classe ficar imensa, com muitas coisas nela;
+
+
+
+
+
+
+

src/facadesAndSingletons/CompanyFacede.java

@@ -0,0 +1,30 @@
+package facadesAndSingletons;
+
+import facadesAndSingletons.models.Client;
+import facadesAndSingletons.models.ClientDao;
+import facadesAndSingletons.models.Collection;
+import facadesAndSingletons.models.Invoice;
+
+//Code not be correct in classes, because this is a example
+public class CompanyFacede {
+
+	protected CompanyFacede() {
+
+	}
+
+	public Client findClient(String cpf) {
+		return new ClientDao().findByCpf(cpf);
+	}
+
+	public Invoice createInvoice(Client Client, double valor) {
+		return new Invoice(Client, valor);
+	}
+
+	public Collection generateCollection(Invoice Invoice) {
+		Collection cobranca = new Collection("Boleto", Invoice);
+		cobranca.issueBill();
+		return cobranca;
+	}
+
+
+}

src/facadesAndSingletons/CompanyFacedeSingleton.java

@@ -0,0 +1,14 @@
+package facadesAndSingletons;
+
+public class CompanyFacedeSingleton {
+
+	private static CompanyFacede instance;
+
+	public CompanyFacede getInstance() {
+		if (instance == null) {
+			instance = new CompanyFacede();
+		}
+		return instance;
+	}
+
+}

src/facadesAndSingletons/FacedesAndSingletonsMain.java

@@ -0,0 +1,26 @@
+package facadesAndSingletons;
+
+import facadesAndSingletons.models.Client;
+import facadesAndSingletons.models.Invoice;
+
+public class FacedesAndSingletonsMain {
+
+	public static void main(String[] args) {
+		System.out.println("--------------------------------------------- Begin Test Facedes and Singletons");
+
+
+		// Singleton
+		CompanyFacede facade = new CompanyFacedeSingleton().getInstance();
+
+		//Facede
+		facade.findClient("123456");
+		facade.createInvoice(new Client("MuPezzuol"), 50);
+		facade.generateCollection(new Invoice(new Client("MuPezzuol"), 500));
+
+		// Facede + Singleton = Together this example
+
+
+		System.out.println("--------------------------------------------- End Test Facedes and Singletons");
+	}
+
+}

src/facadesAndSingletons/models/Client.java

@@ -0,0 +1,24 @@
+package facadesAndSingletons.models;
+
+public class Client {
+
+	private String name;
+
+	public Client() {
+		super();
+	}
+
+	public Client(String name) {
+		super();
+		this.name = name;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+}

src/facadesAndSingletons/models/ClientDao.java

@@ -0,0 +1,9 @@
+package facadesAndSingletons.models;
+
+public class ClientDao {
+
+	public Client findByCpf(String cpf) {
+		return new Client("Murillo Pezzuol");
+	}
+
+}

src/facadesAndSingletons/models/Collection.java

@@ -0,0 +1,17 @@
+package facadesAndSingletons.models;
+
+public class Collection {
+
+	private String string;
+	private Invoice invoice;
+
+	public Collection(String string, Invoice invoice) {
+		this.string = string;
+		this.invoice = invoice;
+	}
+
+	public void issueBill() {
+		// TODO Auto-generated method stub
+	}
+
+}

src/facadesAndSingletons/models/Invoice.java

@@ -0,0 +1,13 @@
+package facadesAndSingletons.models;
+
+public class Invoice {
+
+	private Client client;
+	private double valor;
+
+	public Invoice(Client client, double valor) {
+		this.client = client;
+		this.valor = valor;
+	}
+
+}