Is it possible to use HSQLDB in in-memory mode and to save the data while JBoss is running and/or when JBoss stops?
Thanks in advance
An all-in-memory database has a URL in the form jdbc:hsqldb:mem:thename
With this type of database as with all other types, you can use SCRIPT 'file path' to save a copy of the database to the file you specify.
Now someone else can show you how to execute an SQL command in the JBoss process in different ways. I have seen some examples on the web in the past.
Related
I want to migrate the management and application users created in jboss using add-user.bat utility while upgrading the jboss version.
For that i was thinking if it is possible to store the users created in jboss in a database or may be something like serializing them while creating and update the jaas cache of the jboss server at the time of boot up.
Is there any way to export the user list from an existing jboss installation?
So can anyone please help me with either of the above?
Or may you please suggest me which should be the best approach?
Unfortunately, there is no direct way of exporting application/management users from the JBoss server. But all the application and management users created for jboss will present in application-users.properties and mgmt-users.properties files.
You can get usernames with the encrypted password in the following format
username=HEX( MD5( username ':' realm ':' password))
e.g.
admin=2a0923285184943425d1f53ddd58ec7a
All the roles and groups for the users will present in application-roles.properties
and mgmt-groups.properties files.
Location for above files :
standalone mode: JBOSS_HOME/standalone/configuration/
domain mode: JBOSS_HOME/domain/configuration/
Has anyone been able to get Camunda to run with Spring Boot and mongodb?
I tried several approaches and always got into a brick wall.
What I tried:
1. jpa / hibernate-ogm
I was able to initiate a connection to mongo after creating my own CamundaDatasourceConfiguration and ProcessEngineConfigurationImpl.
It failed when Camunda tried to get table metadata. I couldn't plug out this behavior.
2. jdbc driver for mongo by progress
I set up the jdbc url and driver class by progress.
Camunda then gets stuck during the startup process and does not get to the point where Jetty is fully started, i.e. the "Jetty started on port XYZ" message in the log.
3. camunda with postgres with mongo FDW
FDW is a mechanism for postress to interface an external datasource. This way an application can work with postgres over jdbc while the FDW will take care of reading and writing the date to the external source, be it a file, mongodb, etc.
After realizing 1 and 2 don't work, I started working on 3.
Has anyone succeeded in doing this and can share how?
so I ran into the same problem and decided to share my answers with you.
Currently it is not possible to run the Camunda-Engine with a NoSQL Database.
In this Camunda-Forum-Post one of the guys at Camunda also says it is not possible to run the engine completely without a database.
And in the offical Camunda-Docs there is also a list with all supported environments. Currently there are only SQL-Databases listed:
https://docs.camunda.org/manual/7.10/introduction/supported-environments/
But in some earlier Blog-Posts they metioned, that they want to make some proof-of-concept examples with the use of NoSQL-Databases. So we can expect, that these databases will be supported in the future, but not at the moment.
(note: the flowable engine is doing the same proof of concepts, they mentioned, that they want to be able to use NoSQL-databases by the end of the next year).
So I've started a SQL Server database project inside VS 2012. I have done this for other databases already but not related to Service Broker.
For testing I had already created db, queues, etc through a T-SQL script including Message Types which was in an XML format. i.e.
[//blah.com/Items/RequestItem]
When I try to do something like this in the DB Project it's not allowing me too due to special chars.
Anyone done this? Gotten around it?
Is there a way to simply put my already created T-SQL file in the database project and have it use it?
See my comment above. I was able to import the script by Right clicking on the database Project.
I am facing a problem with mongo DB connection.
I have succefully imported tMongo components it to my Talend Open Studio 5.1.1 and by copying the mongo 1.3.jar file to lib/java folder, my Mongo DB jobs are running successfully, but the problem is even if I provide some fake server path(IP) and fake port for mongoDB, my job is running without an error and it is giving me 1 row with no data. and same goes with right IP and port.
How do I resolve it.
I think the connection is not working. As you must be knowing, mongoDB checks that the connection is actually working or not when you perform a query on it.
(Yeah, it doesn't check for a successful connection when you just connect to it ).
I would suggest to instead add the mongoDB components present in Talend for Big Data by following the steps below:
Components provided for MongoDB are :
tMongoDBInput, tMongoDBOutput, tMongoDBConnection etc.
Or you can Download the components from http://www.talendforge.org/exchange/ and search for Mongo instead of using Talend Big Data. But I would suggest use Talend for big Data for it.
The components will be zipped format , Unzip the same. In Talend Big data you will find the components in Component folder.
Copy these Unzipped Components to the installation Path of TOS.
C:TalendTOS_DI-Win32-r84309V5.1.1pluginsorg.talend.designer.components.localprovider_5.1.1.r84309components
Copy the mongo-1.3.jar file in the component folder into the C:TalendTOS_DI-Win32-r84309-V5.1.1libjava
In many systems you might not be able to see this file then go with ADMINISTRATOR priviliges.
optional for few systems——>>> Inside index.xml add
save index.xml
Restart TOS
Then you will be able to use them as normal components.
Cheers!
The reason for the Job running without any error could be due to the connection / meta-data you have used for the Mongo Connector. It doesn't is not possible for the job to run without any error even after giving fakepath.
I guess you might configured (re-modified) the repository connection but using a built-in meta data for component.
I want to use Java DB in embedded mode in a Java application running from a CD-ROM. Does anyone have any experience of doing this? Will it work? The database will only have selects issued against it.
This is possible: Deploying the database on the read-only media
Also I have noted select statements work when the database is owned by root with all write access withdrawn and is accessed by a non-privileged user.