Unitils and DBMaintainer - how to make them work with multiple users/schemas?

Question

I am working on a new Oracle ADF project, that is using Oragle 10g Database, and I am using Unitils and DBMaintainer in our project for:

• updating the db struct

Answer 1

Check out this link: http://www.dbmaintain.org/tutorial.html#From_Java_code

Specifically you may need to do something like:

databases.names=admin,user,read
database.driverClassName=oracle.jdbc.driver.OracleDriver
database.url=jdbc:oracle:thin://mydb:1521:MYDB
database.admin.username=admin
database.admin.password=adminpwd
database.admin.schemaNames=admin
database.user.userName=user
database.user.password=userpwd
database.user.schemaNames=user
database.read.userName=read
database.read.password=readpwd
database.read.schemaNames=read

Also this link may be helpful: http://www.dbmaintain.org/tutorial.html#Multi-database__user_support

Answer 2

I followed Ryan suggestion. I noticed couple changes when I debugged UnitilsDB.

Following is my running unitils-local.properties:

database.names=db1,db2
database.driverClassName.db1=oracle.jdbc.driver.OracleDriver
database.url.db1=jdbc:oracle:thin:@db1d.company.com:123:db1d
database.userName.db1=user
database.password.db1=password
database.dialect.db1=oracle
database.schemaNames.db1=user_admin

database.driverClassName.db2=oracle.jdbc.driver.OracleDriver
database.url.db2=jdbc:oracle:thin:@db2s.company.com:456:db2s
database.userName.db2=user
database.password.db2=password
database.dialect.db2=oracle

Make sure to use @ConfigurationProperties(prefix = "database.db1") to connecto to particular database in your test case:

@RunWith(UnitilsJUnit4TestClassRunner.class)
@ConfigurationProperties(prefix = "database.db1")
@Transactional
@DataSet
public class MyDAOTest {

..

}

Answer 3

eventually I found a way to inject any unitil.properties of your choice --- by instantiating Unitils yourself!

You need a method that is evoked @BeforeClass, in which you perform something like the following:

@BeforeClass
public void initializeUnitils {
    Properties properties;
    ...
    // load properties file/values depending on various conditions
    ...
    Unitils unitils = new Unitils();
    unitils.init(properties);
    Unitils.setInstance( unitils );     
}

I choose the properties file depending on which hibernate configuration is loaded (via @HibernateSessionFactory), but there should be other options as well

Answer 4

I have figure out how to make dbmaintain and unitils work together on multi-database-user support, but the solution is a pure ant hack.

1. I have set up the configuration for dbmaintain, using multi-database-user support.
2. I have made a unitils-local.properties file with token keys for replacement.
3. The init target of my ant script is generating a new unitils-local.properties file, by replacing tokens for username/password/schema with values that are correct for the target envirnonment, and then copies it to the users home directory.
4. I have sorted the tests into folders, that are prefixed with the schema name
5. When unitils is invoked, it picks up the unitils-local.properties file just created by the ant script, and does its magic.

Its far from pretty, but it works.