spring hibernate session

in the database into the cacheHow to synchronize data in a cache to a databaseThe Session.flush method checks the state of individual objects in the session cache, and if the object is converted from a temporary state (without a primary key value), it causes the object to generate an INSERT statement, and if the object has a primary key value, it will decide whether to issue an UPDATE statement against the copy. When the transaction commits, if the S

Recently in the Learning Shh framework of the Hibernate, the session of Get and load methods, a little confused, do not know where the difference, or the difference between their feelings are not deep. So Baidu a bit, the result of the problem came. Baidu's results and the actual test results are very large. The main idea is that the Get method is inconsistent with the results of the actual operation. Let'

Difference between configuring Hibernate in Spring and configuring Hibernate separately, springhibernate First, let's talk about the features of Spring and Hibernate: Spring: Automatic dependency injection. classes can be used as

is in Spring + hibernate so you have to use Gethibernatetemplate (). Getsessionfactory (). Getcurrentsession () to the current sessionhttp://wdmcln.javaeye.com/blog/154066 1 If you use the Hibernate 2, you need to get/load/query to the persisted object, assign a new attribute value, and then save/update/saveorupdate.The above code is: You cannot new an object th

that every time you use Factory.opensession, this session is different. How to synchronize data in a database to the cache When executing 117 lines of code, the SQL statement Session.get method is issued.When executing 119 lines of code, the SQL statement is issued Session.refreshSynchronizing data in a database to the cache how to synchronize data in the cache to the database The Session.flush method checks the state of individual objects in the

Let's start with some features of spring and hibernate:Spring: Automatic Dependency Injection, classes can be used as beans.Hibernate: Session factory Sessionfactory, transaction manager transaction.If you use Hibernate only, then when you manipulate the database, you need to knock on things like:Configuration conf = new configuration (). Configure ();Sessionfact

Hibernate obtains sesssionFacotory and hibernate obtains the session. The hibernate version is updated quickly, and the way to obtain sessionFactory is also changing. 1. Common Methods: public SessionFactory test1(){ Configuration cfg = new Configuration().configure("hibernate.cfg.xml"); SessionFactory se

, get the existing session. You do not need to manually close the service and submit it to spring for management. When a service-layer transaction is After the submission is complete, the session is automatically closed. 4. Why should I automatically disable the added, deleted, modified, and obtained sessions on the service layer? You will understand the followi

Keyword: hibernate update saveorupdateHibernate data update-session. Update/session. saveorupdate Session. Update: 1. First, search for the key of the object to be updated in the internal cache of the current session. If it is found, the current object is considered to b

The Struts framework has the advantages of modular components, flexibility and reusability, and simplifies the development of MVC-based Web applications. Hibernate is an open source object link ing framework. Spring is an open-source project and is currently very active. This article mainly introduces the advantages and disadvantages of hibernate, struts, an

internal class access to external properties you need to set the property to final * / PublicListSelectcitybypage(Final intStartFinal intEnd) {returnHt.execute (NewHibernatecallback//This method encapsulates the creation of session sessions only @Override PublicListdoinhibernate(Session session)throwsHibernateexception, SQLException {q

Org. hibernate. LazyInitializationException cocould not initialize proxy-no Session solution, hibernate. initializeMethod 1: configure the filter to disable the session with a delay in web. xml. Method 2 : Set lazy = "false" Setting lazy = "false" solves most of the delayed loading problems, but also reduces the system

The role of Opensessioninview! Opensessioninviewfilter is a support class for hibernate provided by spring, which mainly means to open the session of Hibernate when initiating a page request, and keep this session, Until this request is completed, specifically through a filt

1. Sharing Session IssuesHttpSession are created and managed through a servlet container, like Tomcat/jetty are stored in memory. And if we build a distributed cluster of Web servers and then use LVS or nginx for load balancing, HTTP requests from the same user are likely to be distributed to two different Web sites. So the problem is, how to ensure that different Web sites can share the same session data?T

Failed to lazily initialize a collection of Role: COM. Bubble. entity. datas. Days, no session or session was closed The relationship between the datas class and the day class is one-to-many! When querying the datas class, retrieve the set of its corresponding day class! The object of the joined table is not loaded during query. When you read the joined object, the

inherited Org.apache.catalina.session.ManagerBase and re-wrote the Add, Findsession, Createemptysession, remove and other methods, and to the session of the Add and delete operations to the Redis data storage is pointed to the operation.Interested to refer to a session in Tomcat management mechanism: http://www.cnblogs.com/interdrp/p/4935614.htmlHowever, the use of Tomcat-redis-

do it. We had to manually control the transaction without spring helping us to complete the transaction, for example, when we were using hibernate only in our project, instead of integrating into spring, we called other business logic methods in a service layer, In order to ensure that things must also pass the current Hiber