org.nutz.service

Class NameEntityService<T>

java.lang.Object

org.nutz.service.Service

org.nutz.service.EntityService<T>

org.nutz.service.NameEntityService<T>

Type Parameters:

T - 实体的类型

public abstract class NameEntityService<T>
extends EntityService<T>

针对标注了@Name的实体的Service

Author:

wendal(wendal1985@gmail.com)

Constructor Summary

Constructors

Constructor and Description
NameEntityService()
NameEntityService(Dao dao)
NameEntityService(Dao dao, Class<T> entityType)

Method Summary

Modifier and Type	Method and Description
int	delete(String name) 根据@Name所在的属性的值删除一条记录
boolean	exists(String name) 是否存在@Name所在的属性与指定值相符的记录
T	fetch(String name) 根据@Name所在的属性的值获取一个实体对象

Methods inherited from class org.nutz.service.EntityService

_clearLinks, _delete, _deleteLinks, _deleteWith, _fastInsert, _fetch, _fetchLinks, _fetchLinks, _insert, _insert, _insert, _insertLinks, _insertRelation, _insertWith, _query, _query, _update, _update, _updateIgnoreNull, _updateLinks, _updateWith, clear, clear, count, count, create, deletex, each, each, exists, fetch, fetchx, func, func, getEntity, getEntityClass, getObject, getObject, insert, mirror, query, query, query, setEntityType, setExpert, update, updateRelation

Methods inherited from class org.nutz.service.Service

dao, setDao

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NameEntityService

public NameEntityService()

See Also:

EntityService

NameEntityService

public NameEntityService(Dao dao)

See Also:

EntityService

NameEntityService

public NameEntityService(Dao dao,
                         Class<T> entityType)

See Also:

EntityService

Method Detail

delete

public int delete(String name)

根据@Name所在的属性的值删除一条记录

Parameters:

name - 属性的值

Returns:

删除的记录数,通常是0或者1

fetch

public T fetch(String name)

根据@Name所在的属性的值获取一个实体对象

Parameters:

name - 属性的值

Returns:

实体对象,若没有符合条件的记录,则返回null

exists

public boolean exists(String name)

是否存在@Name所在的属性与指定值相符的记录

Parameters:

name - 属性的值

Returns:

true,如果存在符合条件的记录