criteria.list() shows null pointer exception

问题

I'am working on Hibernate 3.3. Recently I started using criteria. My Annotation class is as follows..

@Entity
@Table(name = "EMAG_ADMINLOGIN", schema = "EMAG_USER")
public class Adminlogin implements java.io.Serializable {

private String username;
private String password;
private String fullname;
private long isenabled;

@Id
@Column(name = "USERNAME", unique = true, nullable = false, length = 40)
public String getUsername() {
    return this.username;
}

public void setUsername(String username) {
    this.username = username;
}
@Column(name = "PASSWORD", length = 40)
public String getPassword() {
    return this.password;
}

public void setPassword(String password) {
    this.password = password;
}

@Column(name = "FULLNAME", nullable = false, length = 100)
public String getFullname() {
    return this.fullname;
}

public void setFullname(String fullname) {
    this.fullname = fullname;
}
@Column(name = "ISENABLED", precision = 0)
public long getIsenabled() {
    return this.isenabled;
}

public void setIsenabled(long isenabled) {
    this.isenabled = isenabled;
}
}

And my criteria code is as follows

Criteria criteria=session.createCriteria(Adminlogin.class);
criteria=criteria.add(Restrictions.eq("username", "admin"));
List list=criteria.list();

this code showing error when isEnabled value is null on a row. I know it can not convert null value to primitive data type long. So I want to know is there any other way to skip null value of any property . (I posted one table class, and i have more tables with same kind of class mappings)

回答1:

Change type of 'isenabled' to 'Long' or have default value defined for the column in db schema based on your requirements.

回答2:

Try to Use the NotFound annotation: may be your problem will be solved

  @NotFound(action = NotFoundAction.IGNORE)

来源：https://stackoverflow.com/questions/15043866/criteria-list-shows-null-pointer-exception

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hibernate

java-ee