universalmanager.java

来自「基于Maven的质量保证自动化环境配置和演示程序」· Java 代码 · 共 58 行

package com.cib.service;

import java.io.Serializable;
import java.util.List;

/**
 * Business Facade interface. 
 *
 * @author <a href="mailto:[e-mail]">Matt Raible</a>
 *
 * Modifications and comments by <a href="mailto:[e-mail]">Bryan Noll</a>
 * This thing used to be named simply 'GenericManager' in versions of AppFuse prior to 2.0.
 * It was renamed in an attempt to distinguish and describe it as something
 * different than GenericManager.  GenericManager is intended for subclassing, and was
 * named Generic because 1) it has very general functionality and 2) is
 * 'generic' in the Java 5 sense of the word... aka... it uses Generics.
 *
 * Implementations of this class are not intended for subclassing. You most
 * likely would want to subclass GenericManager.  The only real difference is that
 * instances of java.lang.Class are passed into the methods in this class, and
 * they are part of the constructor in the GenericManager, hence you'll have to do
 * some casting if you use this one.
 *
 * @see com.einvite.service.GenericManager
 */
public interface UniversalManager {
    /**
     * Generic method used to get a all objects of a particular type. 
     * @param clazz the type of objects 
     * @return List of populated objects
     */
    List getAll(Class clazz);

    /**
     * Generic method to get an object based on class and identifier. 
     * 
     * @param clazz model class to lookup
     * @param id the identifier (primary key) of the class
     * @return a populated object 
     * @see org.springframework.orm.ObjectRetrievalFailureException
     */
    Object get(Class clazz, Serializable id);

    /**
     * Generic method to save an object.
     * @param o the object to save
     * @return a populated object
     */
    Object save(Object o);

    /**
     * Generic method to delete an object based on class and id
     * @param clazz model class to lookup
     * @param id the identifier of the class
     */
    void remove(Class clazz, Serializable id);
}