I have introduced Javer in the spring boot. Database we are using is Posgres.
using below in pom.xml:
<dependency>
<groupId>org.javers</groupId>
<artifactId>javers-spring-boot-starter-sql</artifactId>
<version>6.7.0</version>
</dependency>
But whenever application starts, Javer tries creating the database tables again due to which an error is thrown stating table already exists.
Below ddl-auto is being set:
hibernate:
ddl-auto: validate
Can anyone help me out to restrict Javer to create tables and only validate the tables like we do in the JPA
Related
I have taken a DB dump from my dev database to QA database ( oracle) for testing. My application is a spring boot application and uses hibernate envers for auditing. I get above error when trying to insert data to the tables. I tried removing data from all the audit tables and revinfo table. But the issue is still there. Anybody has any idea on this?
Same error after updating the version of hibernate-envers for springboot3+. One quick solution for me was to (first backup) remove all tables related to audit + remove revinfo table and also the sequencer (revinfo_seq if you created some). Then let the ddl-auto property do the work by setting in application.yml
jpa.hibernate.ddl-auto: update
It creates all needed tables and sequencers by its needed definition, and after that inserts were committed.
I am trying to create a small Spring Boot setup with a h2 database.
Now I have a weird problem, which I can't solve.
If I don't create an data.sql for initial data, the app starts fine and creates my entity tables.
If I create an data.sql for initial data and keep the existing table from previous step, everything works fine.
If I create an data.sql for initial data and remove my existing h2 file, I get the error that it can't import the data, because the table is missing.
How do I tell Spring to create my tables before importing the initial data?
This is covered in the release notes for Spring Boot 2.5:
By default, data.sql scripts are now run before Hibernate is initialized. This aligns the behavior of basic script-based initialization with that of Flyway and Liquibase. If you want to use data.sql to populate a schema created by Hibernate, set spring.jpa.defer-datasource-initialization to true. While mixing database initialization technologies is not recommended, this will also allow you to use a schema.sql script to build upon a Hibernate-created schema before it’s populated via data.sql.
I am trying to validate database schema before running any queries using jdbc template. So is there any way to identify schema changes before making any queries in spring programmatically?? Currently I am using spring boot 2 and hibernate 5.
Add this to the configuration file.
hibernate.hbm2ddl.auto=validate
If the value is validated then hibernate only validates the table structure- whether the table and columns have existed or not. If the table doesn’t exist then hibernate throws an exception.
Validate is the default value for hbm2ddl.auto.
My project has this requirement where user uploads a CSV file which has to be pushed to sql server database.
I am following the below basic example to load CSV file into a sql sever database.
https://github.com/michaelcgood/Spring-Batch-CSV-Example
runninng this repo by making change of datasource, here we using sql server instead of in-memory db.
here is the addition to POM file:
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<<artifactId>sqljdbc4</artifactId>
<version>4.0</version>
<</dependency>
additions to applications.properties file
spring.datasource.url=jdbc:sqlserver://localhost;databaseName=springbootdb
spring.datasource.username=sa
spring.datasource.password=Projects#123
Below is the error generated while running the code base, we could not found exact root cause we tried the multiple approaches as mentioned in the google but no luck, while running this spring batch+spring boot 2.0.4 application we are facing the below errors:
spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
o.s.boot.autoconfigure.jdbc.Datasource.initailizer disabled(not running DDL scripts)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [SELECT JOB_INSTANCE_ID, JOB_NAME from BATCH_JOB_INSTANCE
where JOB_NAME = ? order by JOB_INSTANCE_ID desc]; nested exception is java.sql.SQLServerException: Invalid object name 'BATCH_JOB_INSTANCE'.
We are assuming the root cause one of the below?
1.We are using the spring starter project for creating spring batch configuration so not aware how we could define the default table schema and all.
2.maybe we don't have access and/or you need to define the schema. http://forum.spring.io/forum/spring-projects/batch/63771-badsqlgrammarexception-running-commandlinejobrunner
3.Not sure on the why error is saying Invalid object name 'BATCH_JOB_INSTANCE' instead of object doesnot exist?
What are the list of sql queries to create metadate table for spring batch application, to create it manually before running application.
4.we are struggling from couple of days to find the root cause of issue, Please suggest approch by taking the above github code base sample.
any help here would be appreciated. Please let us know if we missed anything here. Thanks In advance
The project you are linking to uses the in-memory hsqldb instance so Spring Boot will automatically create Spring Batch meta-data tables for you.
If you want to adapt the sample to your project and use sql server (which is not embedded in your JVM), Spring Boot will not create Spring Batch tables (unless you instruct it to do so). In this case, you have two options:
Run the Spring Batch DDL script for sqlserver yourself against the db server you are using before running your app
Or instruct Spring Boot to do it for you by specifying the following properties in your application.properties file:
spring.batch.initialize-schema=always
spring.batch.schema=classpath:org/springframework/batch/core/schema-sqlserver.sql
How to create the Javers tables such as jv_snapshot, from scratch every time the Spring Boot Application is run?
JaVers creates its tables if they not exist and never drops them. There is no create-drop option like in Hibernate. For testing we recommend using in-memory db (H2) and running each test on a new and empty db instance.
Yes, it will be auto created.
See a demo here:
https://github.com/yhjhoo/javers-demo
I had the same issue as I wanted to clear all the data from JaVers for every start of my Spring Boot application in my dev environment using postgres.
I set up in my application.properties as follow:
spring:
profiles: dev
jpa:
hibernate:
ddl-auto: create-drop
datasource:
initialization-mode: always
continue-on-error: true
Since initialization-mode is now active, Spring boot will look at the file data.sql under src/main/ressources and run the SQL inside.
TRUNCATE jv_commit CASCADE;
TRUNCATE jv_commit_property CASCADE;
TRUNCATE jv_global_id CASCADE;
TRUNCATE jv_snapshot CASCADE;
Even if the tables don't exist, Spring Boot will still start thanks to the continue-on-error setting.