Save Bug

[pavei]

Estou tentando implementar um exemplo bem simples com um DAO genérico em um cadastro de um produto. A base está no local.

Não sei o que posso estar fazendo de errado, segue o código e o erro mais abaixo

public class GenericDAO<E> implements DAO{

    private Class classOfInstance;
    private  PersistenceManager manager;

    public GenericDAO(Class<E> classOfInstance) {
        super();
        this.classOfInstance = classOfInstance;
        this.manager = PMFactory.get();
    }

    @Override
    public void save(Object object) {
        this.manager.save(object);

    }

    @Override
    public void update(Object object) {
        this.manager.update(object);

    }

    @Override
    public void remove(Object object) {
         this.manager.delete(object);

    }

    @Override
    public Object find(Integer id) {
        return this.manager.read(this.classOfInstance, id);
    }

    @Override
    public List findAll() {
       Criteria query = Criteria.from(this.classOfInstance);

        return manager.find(this.classOfInstance, query);

    }

@Entity
@Table(value="product")
public class Product {

    @PrimaryKey
    @Column
    private Integer product_code;

    @Column
    private String product_name;

    private BigDecimal price;

    public Product() {
        super();
    }

    public Product(Integer product_code, String product_name, BigDecimal price) {
        super();
        this.product_code = product_code;
        this.product_name = product_name;
        this.price = price;
    }

    public Integer getProduct_code() {
        return product_code;
    }

    public void setProduct_code(Integer product_code) {
        this.product_code = product_code;
    }

    public String getProduct_name() {
        return product_name;
    }

    public void setProduct_name(String product_name) {
        this.product_name = product_name;
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }

----------------------------Insert em um activity
  ProductDAO d = new ProductDAO(Product.class);
        Product p = new Product();
        p.setPrice(new BigDecimal(100));
        p.setProduct_code(100);
        p.setProduct_name("Salame");

        d.save(p);

-----------------

Erro: 08-02 06:10:30.267: ERROR/AndroidRuntime(5690): FATAL EXCEPTION: main
08-02 06:10:30.267: ERROR/AndroidRuntime(5690): java.lang.RuntimeException: Unable to start activity ComponentInfo{br.com.viniciuspavei/br.com.viniciuspavei.ProductRequestActivity}: java.lang.NullPointerException
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.os.Looper.loop(Looper.java:123)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.main(ActivityThread.java:4627)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at java.lang.reflect.Method.invokeNative(Native Method)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at java.lang.reflect.Method.invoke(Method.java:521)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at dalvik.system.NativeStart.main(Native Method)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690): Caused by: java.lang.NullPointerException
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.andorm.reflection.Invoker.withParams(Invoker.java:26)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.andorm.persistence.AndroidPersistenceManager.save(AndroidPersistenceManager.java:71)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.viniciuspavei.controller.GenericDAO.save(GenericDAO.java:22)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.viniciuspavei.ProductRequestActivity.onCreate(ProductRequestActivity.java:26)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)

[jonatasdaniel]

Olá, tente fazer o seguinte: use os atributos como camel case, por exemplo, productCode, e na anotação column, coloque o valor name como product_code. Lembrando que, se sua coluna na tabela é exatamente o mesmo nome do seu atributo, a anotação @Column é desnecessária.

Deve resolver, de qualquer forma, obrigado por estar utilizando o AndOrm.

Em 02/08/2011 03:19, pavei escreveu:

Estou tentando implementar um exemplo bem simples com um DAO genérico em um cadastro de um produto. A base está no local.

Não sei o que posso estar fazendo de errado, segue o código e o erro mais abaixo

public class GenericDAO<E>  implements DAO{

  private Class classOfInstance;
  private  PersistenceManager manager;

  public GenericDAO(Class<E>  classOfInstance) {
      super();
      this.classOfInstance = classOfInstance;
      this.manager = PMFactory.get();
  }

  @Override
  public void save(Object object) {
      this.manager.save(object);

  }

  @Override
  public void update(Object object) {
      this.manager.update(object);

  }

  @Override
  public void remove(Object object) {
          this.manager.delete(object);

  }

  @Override
  public Object find(Integer id) {
      return this.manager.read(this.classOfInstance, id);
  }

  @Override
  public List findAll() {
        Criteria query = Criteria.from(this.classOfInstance);

      return manager.find(this.classOfInstance, query);

  }

@Entity
@Table(value="product")
public class Product {

  @PrimaryKey
  @Column
  private Integer product_code;

  @Column
  private String product_name;

  private BigDecimal price;

  public Product() {
      super();
  }

  public Product(Integer product_code, String product_name, BigDecimal price) {
      super();
      this.product_code = product_code;
      this.product_name = product_name;
      this.price = price;
  }

  public Integer getProduct_code() {
      return product_code;
  }

  public void setProduct_code(Integer product_code) {
      this.product_code = product_code;
  }

  public String getProduct_name() {
      return product_name;
  }

  public void setProduct_name(String product_name) {
      this.product_name = product_name;
  }

  public BigDecimal getPrice() {
      return price;
  }

  public void setPrice(BigDecimal price) {
      this.price = price;
  }

----------------------------Insert em um activity
   ProductDAO d = new ProductDAO(Product.class);
         Product p = new Product();
         p.setPrice(new BigDecimal(100));
         p.setProduct_code(100);
         p.setProduct_name("Salame");

         d.save(p);

-----------------

Erro: 08-02 06:10:30.267: ERROR/AndroidRuntime(5690): FATAL EXCEPTION: main
08-02 06:10:30.267: ERROR/AndroidRuntime(5690): java.lang.RuntimeException: Unable to start activity ComponentInfo{br.com.viniciuspavei/br.com.viniciuspavei.ProductRequestActivity}: java.lang.NullPointerException
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.os.Looper.loop(Looper.java:123)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.main(ActivityThread.java:4627)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at java.lang.reflect.Method.invokeNative(Native Method)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at java.lang.reflect.Method.invoke(Method.java:521)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at dalvik.system.NativeStart.main(Native Method)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690): Caused by: java.lang.NullPointerException
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.andorm.reflection.Invoker.withParams(Invoker.java:26)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.andorm.persistence.AndroidPersistenceManager.save(AndroidPersistenceManager.java:71)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.viniciuspavei.controller.GenericDAO.save(GenericDAO.java:22)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at br.com.viniciuspavei.ProductRequestActivity.onCreate(ProductRequestActivity.java:26)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-02 06:10:30.267: ERROR/AndroidRuntime(5690):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)

Jonatas Daniel Hermann @jntsdaniel jonatasdaniel.wordpress.com

[pavei]

O mesmo erro continua..

@Entity
public class Product {

    @PrimaryKey
    @Column(name="product_code")
    private Integer productCode;

    @Column(name="product_name")
    private String productName;

    @Column(name="price")
    private BigDecimal price;

    public Product() {
        // TODO Auto-generated constructor stub
    }

    public Integer getProductCode() {
        return productCode;
    }

    public void setProductCode(Integer productCode) {
        this.productCode = productCode;
    }

    public String getProductName() {
        return productName;
    }

    public void setProductName(String productName) {
        this.productName = productName;
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }

[jonatasdaniel]

Se não for pedir demais, tens como testar usando Double em vez de BigDecimal? Creio que há um bug quando ele trabalha com BigDecimal, mas preciso dessa confirmação para fazermos então a correção.

PS: Nesse seu caso, as anotações @Column são desnecessárias, pois o framework converte os nomes automaticamente para esse padrão minúsculo com underline.

[pavei]

Colocando para Double funcinou corretamente.

Abraço

[jonatasdaniel]

Ok, tens como criar uma nova issue específica para o problema do BigDecimal? De preferência em inglês, e coloque a tag 'bug' na issue. Grato.