package org.imirsel.nema.service;
import java.io.Serializable;
import java.util.List;
/**
* Generic Manager that talks to GenericDao to CRUD POJOs.
*
* <p>Extend this interface if you want typesafe (no casting necessary) managers
* for your domain objects.
*
* @author <a href="mailto:matt@raibledesigns.com">Matt Raible</a>
* @param <T> a type variable
* @param <PK> the primary key for that type
*/
public interface GenericManager<T, PK extends Serializable> {
/**
* Generic method used to get all objects of a particular type. This
* is the same as lookup up all rows in a table.
* @return List of populated objects
*/
List<T> getAll();
/**
* Generic method to get an object based on class and identifier. An
* ObjectRetrievalFailureException Runtime Exception is thrown if
* nothing is found.
*
* @param id the identifier (primary key) of the object to get
* @return a populated object
* @see org.springframework.orm.ObjectRetrievalFailureException
*/
T get(PK id);
/**
* Checks for existence of an object of type T using the id arg.
* @param id the identifier (primary key) of the object to get
* @return - true if it exists, false if it doesn't
*/
boolean exists(PK id);
/**
* Generic method to save an object - handles both update and insert.
* @param object the object to save
* @return the updated object
*/
T save(T object);
/**
* Generic method to delete an object based on class and id
* @param id the identifier (primary key) of the object to remove
*/
void remove(PK id);
}
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