Its not clear whether GraphDB-workbench (https://github.com/Ontotext-AD/graphdb-workbench) can be used against an existing RDF4J install.
Related
Is it possible to use OpenRefine extensions in OntoRefine (part of GraphDB 8.3)? And if yes, how?
What version of OpenRefine is OntoRefine based on?
GraphDB support replied to my e-mail:
OntoRefine is currently (dec 2017) based on OpenRefine 2.5
The implementation is packaged in app/lib/workbench/WEB-INF/lib/graphdb-framework-openrefine-{version}.jar
In my case, GraphDB version is 8.3.1 and the installer placed it into C:\Users\\AppData\Local\GraphDB Free\ (on Windows)
So theoretically, it is possible to unpack the graphdb-framework-openrefine-8.3.1.jar file, add a plugin, repackage and replace.
In practice, it's just too much work and it's probably easier to use a standalone OpenRefine and export from there into GraphDB.
I have just recently come across graph databases and Tinkerpop.
I am somewhat confused on how/what to install to use Tinkerpop 2.5.0/2.6.0. Does it have to be installed on each Database separately (as you would a plugin) or can I set it up and then use it to access different supported software.
My goal is to use it to try out 2 (possibly more) different databases (mainly Neo4j and OrientDB or perhaps Titan) and be able to query them using Gremlin.
How you use TinkerPop is entirely dependent on what you intend to do with it. If you are just getting started, I suggest you simply download the Gremlin distribution, unpackage it and start the console with bin/gremlin.sh. Working in the REPL will help you learn quickly as the feedback time for trying things out is basically instantaneous. Even as your Gremlin code makes its way to production, you will find the Gremlin Console to be a good friend as it provides a way to try out ideas before committing them to code. It also provides a mechanism for maintaining/administering your database with Gremlin.
If you intend to use TinkerPop in a JVM-based application then you will want to use a dependency management tool like Maven and reference the appropriate TinkerPop dependencies you'd like to use. Alternatively, I suppose you could try to manually manage the dependencies by downloading them individually from Maven Central and adding them to your path (though I wouldn't recommend that for obvious reasons). I guess my point for suggesting that, is to just make it clear that the TinkerPop library is just a set of jars that can be included in your JVM development tools like any other.
How you work with a particular database is dependent on the one that you choose, but again the process is little different than what I described above. Neo4j is packaged with the Gremlin Console, so you can work with it right away in there. For OrientDB, you will want to copy those dependencies into the Gremlin Console path (i.e. the /lib directory). If you are building an application, then maven is again your friend and you simply reference the Neo4j or OrientDB maven coordinates and all require dependencies will come with it.
Some implementations, like Titan, have separate prerequisites (e.g. install cassandra or hbase). In those cases, you will need to refer to their documentation for specifics on how to set them up.
All that said, if you are just getting started, I recommend that you look into TinkerPop3. It is the next major line of development for TinkerPop and quit different from it's previous incarnations. It does not yet have all the of the implementations in play as of yet, but database vendors are at work to bring them online. All that I wrote about TinkerPop 2.x "installation" above generally applies to TinkerPop3, however, the TinkerPop3 Gremlin Console does have a plugin system that can help make it a little easier to bring in external dependencies, preventing you from having to worry about dealing with them manually.
We have a productive GitLab 6.8.1 running. I've set up a parallel VM with GitLab 7.10.4. Now I want to move all data from the old installation to the new one. I've already found a way how to move the bare repositories, but I have no clue how to import the user account information, issues, etc.
EDIT: The thing is further complicated by the fact that the original installation was built from source, was running on Debian, used MySQL as a database and the whole installation was pretty much messed up. That's why I didn't manage to migrate the old server and decided to set up a new one. The new server is an Ubuntu machine with GitLab installed from apt-get package (I think that's Omnibus, but I'm not sure what this means.) The new installation seems to use PostgreSQL.
FYI You haven't specified whether the old or new server is running a source installation or omnibus, or whether you're running a MySQL or Postgres database. Instructions differ depending on these factors, so please clarify and I will update my answer.
The first thing is that you will need your old and new servers to be on the same version of GitLab. You cannot migrate anything other than repos without having synchronized versions.
Depending on your reply to the above you will either follow instructions similar to the backup and restore tasks or by running the backup and restore tasks. Both options generally require you to manually copy configuration files or migrate settings from multiple files to a single new file (in the case of going from a source install to Omnibus). The Omnibus upgrade guide above lists the configuration files that need to be migrated depending on your environment.
Update based on edited question: There's a guide specifically for that scenario in this section of the Omnibus upgrade guide, using Option 2. You still need to have the same version on both old and new servers, though, I believe.
I am new to Cloudbees and have been trying to find out how I can run an existing Jboss Portal Server based application which we run in our locally hosted CI in Cloudbees infrastructure.
Our stack has the following components
JDK 1.6 JBoss
Portal Server (EPP 4.3)
Oracle Express Edition (XE)
Would appreciate any help from the community to ensure that I dont discard the option of running Jenkins in the cloud on the Cloudbees platform without proper research.
You will have to setup your build job to install and start the adequate runtime
JDK 6 is available as part of CloudBees runtimes, you can then use /private repository to store EPP 4.3 as a zip and expand to /tmp during a pre-build step
Same principle applies to your database, but I'm not sure you can install Oracle XE without user interaction and without being root. I remember doing this myself some years ago on ubuntu and was not as trivial as just unzipping a binary distro.
Is your code tied to this DB ? Or are you using some DB abstraction layer that you could use to test using another DB runtime (mysql / postgres) ?
I believe Apache Hive can be embedded in Java programs. Can somebody please direct me to the page where "Embedded Hive" can be downloaded? I need to embed Hive to be able to run it on Windows, which is where I am developing my application. Further instructions for embedding and code samples will also be useful.
Hive supports embedded mode only in the sense that the RDBMS which stores the meta information for the Hive tables can run locally or on a stand alone server (ref https://cwiki.apache.org/confluence/display/Hive/HiveClient ). Furthermore, hive with it's accompanying database is merely an orchestrator for a string of MapReduce jobs, which requires the Hadoop framework to be running as well.
Use the following class org.apache.hadoop.hive.service.HiveServer.HiveServerHandler make sure that hive/conf is on the classpath. And all the hive jars from hive/lib. This embedded client needs to be run from the same machine where your hive is installed. If your hive-site.xml is using derby than the embedded client will create a .metastore folder, if your hive-site.xml is using standalone db, then the embedded client will communicate with the db directly so make sure it is running.