Singleton

	CommerceSingleton
	
	
	
	
		
			org.eclipse.jdt.core.javabuilder
			
			
		
	
	
		org.eclipse.jdt.core.javanature
	

eclipse.preferences.version=1
org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
org.eclipse.jdt.core.compiler.codegen.targetPlatform=11
org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
org.eclipse.jdt.core.compiler.compliance=11
org.eclipse.jdt.core.compiler.debug.lineNumber=generate
org.eclipse.jdt.core.compiler.debug.localVariable=generate
org.eclipse.jdt.core.compiler.debug.sourceFile=generate
org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
org.eclipse.jdt.core.compiler.release=enabled
org.eclipse.jdt.core.compiler.source=11

Êþº¾71
(br/uff/commerce/domain/customer/Customer
java/lang/Object
id

J
name
Ljava/lang/String;

(JLjava/lang/String;)V
Code

	
()V	



setName
(Ljava/lang/String;)V
LineNumberTable
LocalVariableTable
this
*Lbr/uff/commerce/domain/customer/Customer;
getId
()J
getName
()Ljava/lang/String;	

 "!
java/lang/String#
trim
 %&'
isEmpty
()Z)
"java/lang/IllegalArgumentException+
Name is mandatory.
(-	

StackMapTable

SourceFile

Customer.java!

	

Y*·*µ*-¶±
	 


/
*´­



/

*´°


h+Æ
+¶¶$™
»(Y*·,¿*+µ±
.	
/0

Êþº¾7"
2br/uff/commerce/domain/customer/CustomerRepository
java/lang/Object
soleInstance
4Lbr/uff/commerce/domain/customer/CustomerRepository;

()V
Code	

LineNumberTable
LocalVariableTable
getSoleInstance
6()Lbr/uff/commerce/domain/customer/CustomerRepository;




StackMapTable

this
insert
-(Lbr/uff/commerce/domain/customer/Customer;)V
product
*Lbr/uff/commerce/domain/customer/Customer;
remove
update
findById
-(J)Lbr/uff/commerce/domain/customer/Customer;
id

J

SourceFile
CustomerRepository.java!



	%

³
±


	
	E²
Ç
»
Y·³
²
°


	3

*·±




	5
±






	5
±
!





	5
±
&





	6

°
+


 !

Êþº¾7f
3br/uff/commerce/domain/customer/EditCustomerRequest
java/lang/Object
br/uff/commerce/request/Request
NAME
Ljava/lang/String;

ConstantValue
editCustomer
soleInstance
5Lbr/uff/commerce/domain/customer/EditCustomerRequest;

()V
Code	


LineNumberTable
LocalVariableTable
getSoleInstance
7()Lbr/uff/commerce/domain/customer/EditCustomerRequest;




StackMapTable

this
execute
(Ljava/util/Map;)V

Exceptions!
(br/uff/commerce/request/RequestException
	Signature
8(Ljava/util/Map;)V%

customerId')(

java/util/Map*+
get
&(Ljava/lang/Object;)Ljava/lang/Object;-
java/lang/Long
/10
2br/uff/commerce/domain/customer/CustomerRepository2
6()Lbr/uff/commerce/domain/customer/CustomerRepository;
,456
	longValue
()J
/89:
findById
-(J)Lbr/uff/commerce/domain/customer/Customer;<
java/lang/StringBuilder>
Customer with id 
;@A
(Ljava/lang/String;)V
;CDE
append
-(Ljava/lang/Object;)Ljava/lang/StringBuilder;G
 not found.
;IDJ
-(Ljava/lang/String;)Ljava/lang/StringBuilder;
;LMN
toString
()Ljava/lang/String;
 @Q
nameS
java/lang/String
UWV
(br/uff/commerce/domain/customer/CustomerXA
setName
/Z[\
update
-(Lbr/uff/commerce/domain/customer/Customer;)V

parameters
Ljava/util/Map;
Ljava/lang/Long;
subject
*Lbr/uff/commerce/domain/customer/Customer;
LocalVariableTypeTable
5Ljava/util/Map;

SourceFile
EditCustomerRequest.java!


	



%

³±
	
E²Ç
»
Y·³²°

3

*·±




 "#ÞO+$¹&À,M¸.,¶3¶7N-Ç » Y»;Y=·?,¶BF¶H¶K·O¿-+P¹&ÀR¶T¸.-¶Y±*
#&%()(*4)8,G.N0*O
O]^
C%_8`ab
O]c

ý8,U
de

Êþº¾7f
1br/uff/commerce/domain/product/EditProductRequest
java/lang/Object
br/uff/commerce/request/Request
NAME
Ljava/lang/String;

ConstantValue
editProduct
soleInstance
3Lbr/uff/commerce/domain/product/EditProductRequest;

()V
Code	


LineNumberTable
LocalVariableTable
getSoleInstance
5()Lbr/uff/commerce/domain/product/EditProductRequest;




StackMapTable

this
execute
(Ljava/util/Map;)V

Exceptions!
(br/uff/commerce/request/RequestException
	Signature
8(Ljava/util/Map;)V%
	productId')(

java/util/Map*+
get
&(Ljava/lang/Object;)Ljava/lang/Object;-
java/lang/Long
/10
0br/uff/commerce/domain/product/ProductRepository2
4()Lbr/uff/commerce/domain/product/ProductRepository;
,456
	longValue
()J
/89:
findById
+(J)Lbr/uff/commerce/domain/product/Product;<
java/lang/StringBuilder>
Product with id 
;@A
(Ljava/lang/String;)V
;CDE
append
-(Ljava/lang/Object;)Ljava/lang/StringBuilder;G
 not found.
;IDJ
-(Ljava/lang/String;)Ljava/lang/StringBuilder;
;LMN
toString
()Ljava/lang/String;
 @Q
nameS
java/lang/String
UWV
&br/uff/commerce/domain/product/ProductXA
setName
/Z[\
update
+(Lbr/uff/commerce/domain/product/Product;)V

parameters
Ljava/util/Map;
Ljava/lang/Long;
subject
(Lbr/uff/commerce/domain/product/Product;
LocalVariableTypeTable
5Ljava/util/Map;

SourceFile
EditProductRequest.java!


	



%

³±
	
E²Ç
»
Y·³²°

3

*·±




 "#ÞO+$¹&À,M¸.,¶3¶7N-Ç » Y»;Y=·?,¶BF¶H¶K·O¿-+P¹&ÀR¶T¸.-¶Y±*
#&%()(*4)8,G.N0*O
O]^
C%_8`ab
O]c

ý8,U
de

Êþº¾71
&br/uff/commerce/domain/product/Product
java/lang/Object
id

J
name
Ljava/lang/String;

(JLjava/lang/String;)V
Code

	
()V	



setName
(Ljava/lang/String;)V
LineNumberTable
LocalVariableTable
this
(Lbr/uff/commerce/domain/product/Product;
getId
()J
getName
()Ljava/lang/String;	

 "!
java/lang/String#
trim
 %&'
isEmpty
()Z)
"java/lang/IllegalArgumentException+
Name is mandatory.
(-	

StackMapTable

SourceFile
Product.java!

	

Y*·*µ*-¶±
	 


/
*´­



/

*´°


h+Æ
+¶¶$™
»(Y*·,¿*+µ±
.	
/0

Êþº¾7"
0br/uff/commerce/domain/product/ProductRepository
java/lang/Object
soleInstance
2Lbr/uff/commerce/domain/product/ProductRepository;

()V
Code	

LineNumberTable
LocalVariableTable
getSoleInstance
4()Lbr/uff/commerce/domain/product/ProductRepository;




StackMapTable

this
insert
+(Lbr/uff/commerce/domain/product/Product;)V
product
(Lbr/uff/commerce/domain/product/Product;
remove
update
findById
+(J)Lbr/uff/commerce/domain/product/Product;
id

J

SourceFile
ProductRepository.java!



	%

³
±


	
	E²
Ç
»
Y·³
²
°


	3

*·±




	5
±






	5
±
!





	5
±
&





	6

°
+


 !

Êþº¾7
br/uff/commerce/request/Request
java/lang/Object
execute
(Ljava/util/Map;)V

Exceptions	
(br/uff/commerce/request/RequestException
	Signature
8(Ljava/util/Map;)V

SourceFile
Request.java








Êþº¾7
(br/uff/commerce/request/RequestException
java/lang/Exception
serialVersionUID

J

ConstantValue


()V
Code


LineNumberTable
LocalVariableTable
this
*Lbr/uff/commerce/request/RequestException;
(Ljava/lang/String;)V


message
Ljava/lang/String;

SourceFile
RequestException.java!





3

*·
±




>*+·±




Êþº¾7O
0br/uff/commerce/requestprocessing/RequestFactory
java/lang/Object
soleInstance
2Lbr/uff/commerce/requestprocessing/RequestFactory;

()V
Code	

LineNumberTable
LocalVariableTable
getSoleInstance
4()Lbr/uff/commerce/requestprocessing/RequestFactory;




StackMapTable

this

createRequest
5(Ljava/lang/String;)Lbr/uff/commerce/request/Request;

java/lang/String
trim
()Ljava/lang/String;
 !
isEmpty
()Z#
"java/lang/IllegalArgumentException%
Request name is mandatory.
"'(
(Ljava/lang/String;)V*
editProduct
,-.
equals
(Ljava/lang/Object;)Z
021
1br/uff/commerce/domain/product/EditProductRequest3
5()Lbr/uff/commerce/domain/product/EditProductRequest;5
editCustomer
798
3br/uff/commerce/domain/customer/EditCustomerRequest:
7()Lbr/uff/commerce/domain/customer/EditCustomerRequest;<
java/lang/StringBuilder>
Request object not found for 
;'
;ABC
append
-(Ljava/lang/String;)Ljava/lang/StringBuilder;
;EF
toString
requestName
Ljava/lang/String;
result
!Lbr/uff/commerce/request/Request;L
br/uff/commerce/request/Request

SourceFile
RequestFactory.java!



	%

³
±


	
	E²
Ç
»
Y·³
²
°


	/

*·±




	ÚR+Æ
+¶¶™
»"Y$·&¿+)¶+™
¸/M§++4¶+™
¸6M§»"Y»;Y=·?+¶@¶D·&¿,°*
 !!("1#8%<&L%P(
4RRGH
%IJ5IJPIJ	üK
MN

Êþº¾7:
2br/uff/commerce/requestprocessing/RequestProcessor
java/lang/Object
soleInstance
4Lbr/uff/commerce/requestprocessing/RequestProcessor;
factory
2Lbr/uff/commerce/requestprocessing/RequestFactory;

()V
Code	


LineNumberTable
LocalVariableTable
getSoleInstance
6()Lbr/uff/commerce/requestprocessing/RequestProcessor;





StackMapTable


0br/uff/commerce/requestprocessing/RequestFactory
4()Lbr/uff/commerce/requestprocessing/RequestFactory;	

this
process
$(Ljava/lang/String;Ljava/util/Map;)V

Exceptions#
(br/uff/commerce/request/RequestException
	Signature
J(Ljava/lang/String;Ljava/util/Map;)V
'()

createRequest
5(Ljava/lang/String;)Lbr/uff/commerce/request/Request;+-,
br/uff/commerce/request/Request./
execute
(Ljava/util/Map;)V
requestName
Ljava/lang/String;

parameters
Ljava/util/Map;
request
!Lbr/uff/commerce/request/Request;
LocalVariableTypeTable
5Ljava/util/Map;

SourceFile
RequestProcessor.java!

	

%

³±
	
E²Ç
»
Y·³²°


>
*·*¸µ±

 !
"$%s*´+¶&N-,¹*±"	#$*01
23	456
27
89

package br.uff.commerce.domain.customer;

public class Customer
{
	private long id;
	private String name;
	
	public Customer(long id, String name)
	{
		this.id = id;
		this.setName(name);
	}
	
	public long getId()
	{
		return this.id;
	}
	
	public String getName()
	{
		return this.name;
	}
	
	public final void setName(String name)
	{
		if (name == null || name.trim().isEmpty())
			throw new IllegalArgumentException("Name is mandatory.");
		
		this.name = name;
	}	

}

package br.uff.commerce.domain.customer;

/**
 * Repositório (persistência) de Cliente
 * 
 *
 */
public class CustomerRepository
{
	private static CustomerRepository soleInstance = null;
	
	public static CustomerRepository getSoleInstance()
	{
		if (CustomerRepository.soleInstance == null)
			CustomerRepository.soleInstance = new CustomerRepository();
		
		return CustomerRepository.soleInstance;
	}
	
	private CustomerRepository()
	{
		
	}
	
	public void insert(Customer product)
	{
		//insere novo cliente
	}
	
	public void remove(Customer product)
	{
		//remove cliente
	}
	
	public void update(Customer product)
	{
	   //atualiza cliente	
	}
	
	public Customer findById(long id)
	{
		//busca e retorna cliente pelo respectivo id
		return null;
	}
}

package br.uff.commerce.domain.customer;

import java.util.Map;

import br.uff.commerce.request.Request;
import br.uff.commerce.request.RequestException;

/**
 * Singleton
 *
 */
public class EditCustomerRequest implements Request
{
	public final static String NAME = "editCustomer";
	
	private static EditCustomerRequest soleInstance = null;
	
	public static EditCustomerRequest  getSoleInstance()
	{
		if (EditCustomerRequest.soleInstance == null)
			EditCustomerRequest.soleInstance = new EditCustomerRequest();
		
		return EditCustomerRequest.soleInstance;
	}
	
	private EditCustomerRequest() 
	{ 
		
	}

	@Override
	public void execute(Map parameters) throws RequestException
	{
		
		Long customerId = (Long) parameters.get("customerId");
		
		Customer subject = 
				CustomerRepository.getSoleInstance().findById(customerId);
		
		if (subject == null)
			throw new RequestException("Customer with id "+ 
		                                customerId +" not found.");
			
		subject.setName((String) parameters.get("name"));
		
		CustomerRepository.getSoleInstance().update(subject);
		
	}

}

package br.uff.commerce.domain.product;

import java.util.Map;

import br.uff.commerce.request.Request;
import br.uff.commerce.request.RequestException;

/**
 * Singleton.
 *
 */
public class EditProductRequest implements Request
{
	public final static String NAME = "editProduct";
	
	private static EditProductRequest soleInstance = null;
	
	public static EditProductRequest  getSoleInstance()
	{
		if (EditProductRequest.soleInstance == null)
			EditProductRequest.soleInstance = new EditProductRequest();
		
		return EditProductRequest.soleInstance;
	}
	
	private EditProductRequest() 
	{ 
		
	}

	@Override
	public void execute(Map parameters) throws RequestException
	{
		
		Long productId = (Long) parameters.get("productId");
		
		Product subject = 
				ProductRepository.getSoleInstance().findById(productId);
		
		if (subject == null)
			throw new RequestException("Product with id "+ 
		                                productId +" not found.");
			
		subject.setName((String) parameters.get("name"));
		
		ProductRepository.getSoleInstance().update(subject);
		
	}

}

package br.uff.commerce.domain.product;

public class Product
{
	private long id;
	private String name;
	
	public Product(long id, String name)
	{
		this.id = id;
		this.setName(name);
	}
	
	public long getId()
	{
		return this.id;
	}
	
	public String getName()
	{
		return this.name;
	}
	
	public final void setName(String name)
	{
		if (name == null || name.trim().isEmpty())
			throw new IllegalArgumentException("Name is mandatory.");
		
		this.name = name;
	}	

}

package br.uff.commerce.domain.product;

/**
 * Repositório (persistência) de Produto
 * 
 *
 */
public class ProductRepository
{
	private static ProductRepository soleInstance = null;
	
	public static ProductRepository getSoleInstance()
	{
		if (ProductRepository.soleInstance == null)
			ProductRepository.soleInstance = new ProductRepository();
		
		return ProductRepository.soleInstance;
	}
	
	private ProductRepository()
	{
		
	}
	
	public void insert(Product product)
	{
		//insere novo produto
	}
	
	public void remove(Product product)
	{
		//remove produto
	}
	
	public void update(Product product)
	{
	   //atualiza produto	
	}
	
	public Product findById(long id)
	{
		//busca e retorna produto pelo respectivo id
		return null;
	}
}

package br.uff.commerce.request;

import java.util.Map;

/**
 * Singleton
 *
 */
public interface Request
{
	public void execute(Map parameters) throws RequestException;
}

package br.uff.commerce.request;

/**
 * Indica algum problema na execução de uma requisição.
 *
 */
public class RequestException extends Exception
{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	public RequestException()
	{
		super();
		
	}

	public RequestException(String message)
	{
		super(message);
		
	}

}

package br.uff.commerce.requestprocessing;

import br.uff.commerce.domain.customer.EditCustomerRequest;
import br.uff.commerce.domain.product.EditProductRequest;
import br.uff.commerce.request.Request;

/**
 * Factory parametrizado e Singleton.
 *
 */
public class RequestFactory
{
	private static RequestFactory soleInstance = null;
	
	public static RequestFactory getSoleInstance()
	{
		if (RequestFactory.soleInstance == null)
			RequestFactory.soleInstance = new RequestFactory();
		
		return RequestFactory.soleInstance;
	}
	
	private RequestFactory() {}
	
	public Request createRequest(String requestName)
	{
		if (requestName == null || requestName.trim().isEmpty())
			throw new IllegalArgumentException("Request name is mandatory.");
		
		Request result;
		
		if (requestName.equals(EditProductRequest.NAME))
			result = EditProductRequest.getSoleInstance();
		else if (requestName.equals(EditCustomerRequest.NAME))
			result = EditCustomerRequest.getSoleInstance();
		else 
			throw new IllegalArgumentException(
					"Request object not found for "+ requestName);
			
		return result;
	}
	
}

package br.uff.commerce.requestprocessing;

import java.util.Map;

import br.uff.commerce.request.Request;
import br.uff.commerce.request.RequestException;

/**
 * Singleton
 *
 */
public class RequestProcessor
{
	private static RequestProcessor soleInstance = null;
	
	public static RequestProcessor getSoleInstance()
	{
		if (RequestProcessor.soleInstance == null)
			RequestProcessor.soleInstance = new RequestProcessor();
		
		return RequestProcessor.soleInstance;
	}
	
	private RequestFactory factory;
	
	private RequestProcessor()
	{
		this.factory = RequestFactory.getSoleInstance();
	}
	
	public void process(String requestName, Map parameters) 
			throws RequestException
	{
		Request request = this.factory.createRequest(requestName);
		request.execute(parameters);
	}
	
}