您的位置：首页 > 编程语言 > Java开发

hibernate学习入门3

2015-10-13 18:52 633 查看

Session 接口方法

Session接口提供多个方法，但这里列出的只有少数重要的方法，这些方法我们在本教程中会使用。您可以查看Hibernate文档Session和SessionFactory相关方法的完整列表。
S.N.
会话的方法和说明
1
Transaction beginTransaction() 

Begin a unit of work and return the associated Transaction object.
2
void cancelQuery() 

Cancel the execution of the current query.
3
void clear() 

Completely clear the session.
4
Connection close() 

End the session by releasing the JDBC connection and cleaning up.
5
Criteria createCriteria(Class persistentClass) 

Create a new Criteria instance, for the given entity class, or a superclass of an entity class.
6
Criteria createCriteria(String entityName) 

Create a new Criteria instance, for the given entity name.
7
Serializable getIdentifier(Object object) 

Return the identifier value of the given entity as associated with this session.
8
Query createFilter(Object collection, String queryString) 

Create a new instance of Query for the given collection and filter string.
9
Query createQuery(String queryString) 

Create a new instance of Query for the given HQL query string.
10
SQLQuery createSQLQuery(String queryString) 

Create a new instance of SQLQuery for the given SQL query string.
11
void delete(Object object) 

Remove a persistent instance from the datastore.
12
void delete(String entityName, Object object) 

Remove a persistent instance from the datastore.
13
Session get(String entityName, Serializable id) 

Return the persistent instance of the given named entity with the given identifier, or null if there is no such persistent instance.
14
SessionFactory getSessionFactory() 

Get the session factory which created this session.
15
void refresh(Object object) 

Re-read the state of the given instance from the underlying database.
16
Transaction getTransaction() 

Get the Transaction instance associated with this session.
17
boolean isConnected() 

Check if the session is currently connected.
18
boolean isDirty() 

Does this session contain any changes which must be synchronized with the database?
19
boolean isOpen() 

Check if the session is still open.
20
Serializable save(Object object) 

Persist the given transient instance, first assigning a generated identifier.
21
void saveOrUpdate(Object object) 

Either save(Object) or update(Object) the given instance.
22
void update(Object object) 

Update the persistent instance with the identifier of the given detached instance.
23
void update(String entityName, Object object) 

Update the persistent instance with the identifier of the given detached instance.
 
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 点击这里给我发消息
标签：  hibernate java 数据库 session
相关文章推荐
新的分享
章节导航