Callback Methods

Lifecycle callback methods must be define directly on parameters from queryable instance or superclass.

The callback methods are annotated with annotations designating the callback events for which they are invoked.

Callback methods defined on an parameters class or superclass have the following signature:

public void <METHOD>()

Note: public method is mandatory, cannot be static.

These annotations design the lifecycle from callback methods:

• PreCallBack: before save the record into database. Scopes are SELECT, ADD, UPDATE, REMOVE and NONE.
• PostCallBack: after execute the respective command at database. Scopes are SELECT, ADD, UPDATE, REMOVE, LOAD and NONE.
• PostCallBack: after save the record into database. Scores are EXCEPTION (pending), COMMIT (pending) and (pending)

Example:

public class Author {
  // ... declare attributes

  @PreCallBack(scope=CallbackScope.ADD)
  public void generateId() {
    this.id = UUID.randomUUID().toString();
  }

  @PreCallBack(scope=CallbackScope.UPDATE)
  public void updateAt() {
    this.updateAt = new Date();
  }

  @PreCallBack(scope=CallbackScope.ADD)
  public void addAt() {
    this.addAt = new Date();
  }
}

One method can have many scopes.