Nov 25, 2006  Hi Can anyone help me to update the database using hibernate.I am using objectlistdataprovider to populate values in table using hibernate.i am displaying the values using textfield in table.Now i want to update the textfield values. - I had put a 'SAVE' button which saves the updated data to the database by calling the 'saveActivitiesList. I have a tendency to agree with the whole thing that has been composed throughout “Hibernate operations(Insert,Delete,Retrieve and Update data) with.

1. Update Data In Database Using Hibernate In Windows 7
2. Update Data In Database Using Hibernate In Windows 10

hello i'm having problem to update my data
i'm using spring and hibernate. i can add and delete. but i cannot update.
here for code for delete and update
public ModelAndView deleteItemList(HttpServletRequest request,
HttpServletResponse response) throws Exception {

Item m = itemServiceManager.getItem(request.getParameter('id'));

Windows 10 does not hibernate properly (after Creators update). As clean boot is performed to start Windows by using a minimal set of drivers and startup programs. This helps eliminate software conflicts that occur when you install a program or an update or when you run a program in Windows 10. The only change was Windows.

1. Retrieving Objects in Hibernate using session.get We’ll look at one of the several ways we can fetch data from the database using Hibernate: the session.get method. Now look following example.
2. Using the same SQL statement is beneficial when using JDBC statement caching. However, if the database table is heavily indexed, we don’t want to update certain index entries that have not been modified, as explained by Markus Winand. For this reason, Hibernate offers the @DynamicUpdate annotation. All we need to do is to add this annotation.
3. Let us see an example on hibernate update query, update query in hibernate, updating row in hibernate, updating row in database using the hibernate Please consider disabling your ad blocker for Java4s.com, we won't encourage audio ads, popups or any other annoyances at any point, hope you support us:-) Thank you.
4. Hi there I am designing a Web Application and I am using Hibernate to save data in the database this is my form What I am trying is to save that data receive from JSP page to database.

itemServiceManager.deleteItem(m);

List itemsList = itemServiceManager.getAllItem();

Map myModel = new HashMap();
myModel.put('total',Integer.valueOf(itemsList.size()));
myModel.put('itemsList',itemsList);

Update Data In Database Using Hibernate In Windows 7

ModelAndView mav = new ModelAndView('itemPage', 'model', myModel);

return mav;

}

public ModelAndView updateItem(HttpServletRequest request,
HttpServletResponse response) throws Exception {

Item m = itemServiceManager.getItem(request.getParameter('itemid'));

Map myModel = new HashMap();
myModel.put('name',mItem.getItemname());

ModelAndView mav = new ModelAndView('form', 'items', myModel);

return mav;

}
when i perform update function...this error will display
org.hibernate.StaleStateException: Batch update returned unexpected row count from update: 0 actual row count: 0 expected: 1
- data in db was not empty
- anyone who know how to solve this prob?

Imagine you are developing a Java EE app using Hibernate and JBoss. You have a running server that has some important data on it. You release the next version of the app once in a while (1-2 weeks) and they have a bunch of changes in the persistence layer:

• New entities
• Removed entities
• Attribute type changes
• Attribute name changes
• Relationship changes

How do you effectively set up a system that updates the database schema and preserves the data? As far as I know (I may be mistaking), Hibernate doesn't perform alter column, drop/alter constraint.

Thank you,Artem B.

artembartemb

8 Answers

LiquiBase is your best bet. It has a hibernate integration mode that uses Hibernate's hbm2ddl to compare your database and your hibernate mapping, but rather than updating the database automatically, it outputs a liquibase changelog file which can be inspected before actually running.

While more convenient, any tool that does a comparison of your database and your hibernate mappings is going to make mistakes. See http://www.liquibase.org/2007/06/the-problem-with-database-diffs.html for examples. With liquibase you build up a list of database changes as you develop in a format that can survive code with branches and merges.

Nathan VoxlandNathan Voxland

You can use https://github.com/Devskiller/jpa2ddl tool which provides Maven and Gradle plugin and is capable of generating automated schema migrations for Flyway based on JPA entities. It also includes all properties, dialects, user-types, naming strategies, etc.

Jakub KubrynskiJakub Kubrynski

I personally keep track of all changes in a migration SQL script.

Maurice PerryMaurice PerryBlake PetterssonBlake Pettersson

For one app I use SchemaUpdate, which is built in to Hibernate, straight from a bootstrap class so the schema is checked every time the app starts up. That takes care of adding new columns or tables which is mostly what happens to a mature app. To handle special cases, like dropping columns, the bootstrap just manually runs the ddl in a try/catch so if it's already been dropped once, it just silently throws an error. I'm not sure I'd do this with mission critical data in a production app, but in several years and hundreds of deployments, I've never had a problem with it.

Brian DeterlingBrian Deterling

As a further response of what Nathan Voxland said about LiquiBase, here's an example to execute the migration under Windows for a mySql database:

Put the the mysql connector under lib folder in liquibase distribution for example.

Create a file properties liquibase.properties in the root of the liquibase distribution and insert this recurrent lines :

Generate or retrieve an updated database under another name for example NEWdatabase.

Now you will exctract differences in a file Migration.xml with the following command line :

Finally execute the update by using the just generated Migration.xml file :

NB: All this command lines should be executed from the liquibase home directory where liquibase.bat/.sh and liquibase.jar are present.

I use the hbm2ddl ant task to generate my ddl. There is an option that will perform alter tables/columns in your database.

Please see the 'update' attribute of the hbm2ddl ant task:

update(default: false): Try and create an update script representing the 'delta' between what is in the database and what the mappings specify. Ignores create/update attributes. (Do not use against production databases, no guarantees at all that the proper delta can be generated nor that the underlying database can actually execute the needed operations)

Matt Sidesinger

Update Data In Database Using Hibernate In Windows 10

Matt Sidesinger

You can also use DBMigrate. It's similar to Liquibase :

Similar to 'rake migrate' for Ruby on Rails this library lets you manage database upgrades for your Java applications.

Hendy IrawanHendy Irawan

Not the answer you're looking for? Browse other questions tagged databasehibernateschemamigrate or ask your own question.