Is it possible to do type conversion (from boolean to yes_no) in pure JPA?

Question

There is an annotation in Hibernate that can persist boolean types as \'Y\'/\'N\' in the database.

https://stackoverflow.com/questions/1154833/configure-hibernate-u

Answer 1

Similar to the above (@Arthur Ronald F D Garcia), but you can also use JPA field access and leave the ivar in the type of the database with transient accessors - marking them @Transient. This ensures JPA acces the entity by field access but leaves the accessors available for appropriately typed usage.

Using the above example:

@Column(name="isconstrained")
private int isConstrained;

@Transient
public boolean getIsConstrained() {
    return (isConstrained == 1);
}

@Transient
public void setIsConstrained(boolean isConstrained) {
    this.isConstrained = (isConstrained? 1 : 0);
}