| How to connect EMFStore with MongoDB [message #1221341] |
Tue, 17 December 2013 13:22  |
 Phil Wim
Messages: 89
Registered: October 2013 |
Member |
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Hi there,
i try to setup an emfstore with mongodb, which should be running since version 1.1.1.
Here are my steps:
I:
1.added the complete EMFStore project into my workspace.
2.switched to EMFstore targetplatform
3.modified emfstore.product (added org.ecipse.emf.emfstore.mongodb; ...emfstore.mongodb.server ; ...emfstore.mongodb.client)
4.exported as eclipse product
5.started it
After a few seconds, the log says:
!SESSION 2013-12-17 13:59:22.944 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.7.0_45
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Command-line arguments: -os linux -ws gtk -arch x86_64
!ENTRY org.eclipse.emf.emfstore.common.model 2 2 2013-12-17 13:59:24.338
!MESSAGE No location provider or error while instantiating location provider, switching to default location!
!ENTRY org.eclipse.emf.emfstore.common.model 1 1 2013-12-17 13:59:24.345
!MESSAGE Property file read. (/home/jpw/.emfstore/server/profiles/default/./conf/es.properties)
!ENTRY org.eclipse.emf.emfstore.common.model 1 1 2013-12-17 13:59:24.346
!MESSAGE Server data home location: /home/jpw/.emfstore/server/profiles/default/
!ENTRY org.eclipse.emf.emfstore.common.model 1 1 2013-12-17 13:59:24.346
!MESSAGE JVM Max Memory: 1390 MByte
!ENTRY org.eclipse.osgi 4 0 2013-12-17 13:59:34.626
!MESSAGE Application error
!STACK 1
java.lang.NullPointerException
at org.eclipse.emf.emfstore.mongodb.server.MongoDBDynamicModelProvider.getDynamicModels(MongoDBDynamicModelProvider.java:53)
at org.eclipse.emf.emfstore.internal.server.EMFStoreController.registerDynamicModels(EMFStoreController.java:208)
at org.eclipse.emf.emfstore.internal.server.EMFStoreController.run(EMFStoreController.java:137)
at org.eclipse.emf.emfstore.internal.server.EMFStoreController.start(EMFStoreController.java:102)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
There is not much to configure in the automatically created file mongodb.properties. So I left it as default.
I found an outdated guide for connecting emfstore with mongo db (https://github.com/ExNexu/emfstore-mongodb/wiki). The description says i have to to prepare my mongodb. But still no success. Is this guide related to the new mongodb functionality?
Can somebody tell me how to get it running?
[Updated on: Tue, 17 December 2013 14:12] Report message to a moderator |
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| Re: How to connect EMFStore with MongoDB [message #1221989 is a reply to message #1221341] |
Thu, 19 December 2013 09:12  |
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Hi,
Sorry for the late response. The guide you are mentioning is not related to the current implementation.
I think you might be missing some plugins. To get EMFStore to run with mongodb you also have to add the following plugins (and their dependencies) to the run/product configuration:
org.eclipselabs.emf.query.simple
org.eclipselabs.mongo
org.eclipselabs.mongo.emf
org.eclipselabs.mongo.emf.builders
org.eclipselabs.mongo.emf.converter
org.eclipselabs.mongo.emf.ext
org.eclipselabs.mongo.emf.query.simple
org.eclipselabs.mongo.emf.streams
org.eclipse.equinox.ds
org.eclipse.equinox.cm
For equinox.ds and equinox.cm you have to set autostart to true and the start-level to 1.
Best regards,
Johannes
Johannes Faltermeier
Get professional Eclipse developer support:
http://eclipsesource.com/en/services/developer-support/
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| Re: How to connect EMFStore with MongoDB [message #1222524 is a reply to message #1222134] |
Fri, 20 December 2013 17:11 |
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Hi,
From my experience the ResourceSetFactory is null when the mongoEMF services are not working correctly and the factory is never provided. So I think it is still a problem with the run configuration.
I added a launch configuration for the server in the emfstore.mongodb.server plugin, so you can pull and have a look at it.
Besides starting the MongoDB instance you don't have to do any configuration.
I will create further launch configs and a product definition in the upcoming days.
Johannes Faltermeier
Get professional Eclipse developer support:
http://eclipsesource.com/en/services/developer-support/
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| Re: How to connect EMFStore with MongoDB [message #1225984 is a reply to message #1222818] |
Tue, 31 December 2013 10:22 |
Phil Wim
Messages: 89
Registered: October 2013 |
Member |
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Hi Johannes,
finally i got it working. Thanks so much. I was missing exactly these dependencies. I had the sources of these in my workspace. Somehow, they did not work. Then I installed the dependencies bryan hunt suggested at https://github.com/BryanHunt/mongo-emf/wiki (update site http://bryanhunt.github.com/mongo-emf/releases/0.7.1; i had to uncheck the option "group items by category" to see something in the install dialog). Then I updated the launch configuration by simply pressing the button"add required plugins". Eventually I created a product configuration out of my launch conf. Now I have a running server product with everything stored in mongo db. Perfekt!
So, what is next? In order to use EMF instead of an OR-Mapping I need the ability of storing large datasets, querying and aggregating them. Is the EmfStore-Mongo Approach fitting my needs? Do I have to switch to mongoemf api?
If so, can you provide some examples?
I'm currently playing around with ResourceSetFactoryProvider.getResourceSetFactory().createResourceSet();
Which provides the starting point ResourceSet of mongoemf examples.
Probably then i have to switch to a different api, right?
I wish you all a happy new year
Philippe
[Updated on: Tue, 31 December 2013 10:23] Report message to a moderator |
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| Re: How to connect EMFStore with MongoDB [message #1227063 is a reply to message #1225984] |
Fri, 03 January 2014 12:17 |
Maximilian Koegel
Messages: 253
Registered: July 2009 |
Senior Member |
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Hi Phil,
Johannes (and the team) are currently on holidays, therefore the delay.
It is always hard to say if something is the right approach for you ;),
maybe you can provide some more insight in your usage scenario? How many
entities do you intend to store (e.g. per project), how many users are
accessing the data and in which frequency?
I can also offer you to discuss your problem in a short telco once I am
back at January 7th, if you cannot disclose too much here.
Cheers,
Maximilian
Am 31.12.2013 17:22, schrieb Phil Wim:
> Hi Johannes,
>
> finally i got it working. Thanks so much. I was missing exactly these
> dependencies. I had the sources of these in my workspace. Somehow, they
> did not work. Then I installed the dependencies bryan hunt suggested at
> https://github.com/BryanHunt/mongo-emf/wiki (update site
> http://bryanhunt.github.com/mongo-emf/releases/0.7.1; i had to uncheck
> the option "group items by category" to see something in the install
> dialog). Then I updated the lunch configuration by simply pressing the
> button"add required plugins". Eventually I created a product
> configuration out of my lunch conf. Now I have a running server product
> with everything stored in mongo db. Perfekt!
>
> So, what is next? In order to use EMF instead of an OR-Mapping I need
> the ability of storing large datasets, querying and aggregating them. Is
> the EmfStore-Mongo Approach fitting my needs? Do I have to switch to
> mongoemf api?
>
> If so, can you provide some examples?
> I'm currently playing around with
> ResourceSetFactoryProvider.getResourceSetFactory().createResourceSet();
> Which provides the starting point ResourceSet of mongoemf examples.
> Probably then i have to switch to a different api, right?
>
> I wish you all a happy new year
> Philippe
--
Maximilian Kögel
Get Professional Eclipse Support: http://eclipsesource.com/munich
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