NamedNativeQuery (Java EE 5)

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SUMMARY: REQUIRED | OPTIONAL DETAIL: ELEMENT

javax.persistence Annotation Type NamedNativeQuery

@Target(value=TYPE)
@Retention(value=RUNTIME)
public @interface NamedNativeQuery

Implements: Annotation
@Target(value=TYPE)
@Retention(value=RUNTIME)

此类用于指定本机 SQL 指定的查询。查询名称的范围限制在持久性单元内。
since
en
Java Persistence 1.0
英文文档：

Is used to specify a native SQL named query. Query names are scoped to the persistence unit.

Since:
Java Persistence 1.0

Required Element Summary
 String name
          Is used to refer to the query when using the EntityManager methods that create query objects.
 String query
          The SQL query string
 
Optional Element Summary
 QueryHint[] hints
          Vendor-specific query hints
 Class resultClass
          The class of the result
 String resultSetMapping
          The name of a SqlResultSetMapping, as defined in metadata
 

Element Detail

abstract public String name()
在使用创建查询对象的 EntityManager 方法时用来引用查询。
英文文档：

name

public abstract String name
Is used to refer to the query when using the EntityManager methods that create query objects.

abstract public String query()
SQL 查询字符串
英文文档：

query

public abstract String query
The SQL query string

abstract public QueryHint[] hints()
特定于供应商的查询提示
英文文档：

hints

public abstract QueryHint[] hints
Vendor-specific query hints

Default:
{}

abstract public Class<T> resultClass()
结果类
英文文档：

resultClass

public abstract Class resultClass
The class of the result

Default:
void.class

abstract public String resultSetMapping()
SqlResultSetMapping 名称，在元数据中定义
英文文档：

resultSetMapping

public abstract String resultSetMapping
The name of a SqlResultSetMapping, as defined in metadata

Default:
""
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Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.

一看就知道只有菜鸟才干这么无知的事啦。

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