MongoDB

Last modified by Pierre Dubois on 2015/06/11 11:52

Use MongoDB

If your application uses an important set of values, you can choose to store them in MongoDB :

create a database: use databaseName;
create a user on it: db.createUser({user : "username" ,pwd : "password",roles :["readWrite"]}) ;

In the System Parameters, modify MongoHost, MongoPort, MongoDatabase, MongoUser and MongoPassword
Capturedecran2015-06-04a15.45.54.png

You have now to create a java class in order to make your bundle to listen to the service TimeSerieMongoClientService. In the pom file’s directory of your bundle execute following command:

mvm clean install
mvn eclipse:eclipse

Then import the bundle as an eclipse project to add that class which activate the service :
Right click -> Import -> General -> existing project into workspace and specify the folder of your bundle in tomcat/dysoweb.home/application
Capturedecran2015-06-04a16.13.56.png

Create a class Activator in the folder src/main/java:

public class Activator implements BundleActivator {

private BundleContext fContext;
private IApplicationService fApplicationService;
private static Activator fInstance;
private ITimeSeriesMongoClientService fMongoService;

public Activator() {

}

public void start(BundleContext context) throws Exception {
  fContext = context;
  registerApplicationServiceListener(context);
  registerMongoServiceListener(context);
  fInstance = this;
}

public void stop(BundleContext context) throws Exception {
  fContext = null;
  fInstance = null;
}

public static Activator getDefault() {
return fInstance;
}

public IApplicationService getApplicationService() {
// retrieve the import service for the running instance
return fApplicationService;
}

private void registerApplicationServiceListener(BundleContext context) throws InvalidSyntaxException {
// get the service ref if the auth plugin is already started
ServiceReference sr = context.getServiceReference(IApplicationService.class.getName());
if(sr != null) {
   fApplicationService = (IApplicationService)context.getService(sr);
}

  ServiceListener sl = new ServiceListener() {

  @Override
  public void serviceChanged(ServiceEvent ev) {
    ServiceReference sr = ev.getServiceReference();
   switch (ev.getType()) {
    case ServiceEvent.REGISTERED: {
      fApplicationService = (IApplicationService)fContext.getService(sr);
    }
    break;
    case ServiceEvent.UNREGISTERING: {
      fApplicationService = null;
    }
    break;
   }
  }
};

  String filter = "(objectclass="
   + IApplicationService.class.getName() + ")";
  context.addServiceListener(sl, filter);
}

private void registerMongoServiceListener(BundleContext context) throws InvalidSyntaxException {
    // get the service ref if the auth plugin is already started
    ServiceReference sr = context.getServiceReference(ITimeSeriesMongoClientService.class.getName());
    if(sr != null) {
         fMongoService = (ITimeSeriesMongoClientService)context.getService(sr);
    }

     ServiceListener sl = new ServiceListener() {

        @Override
        public void serviceChanged(ServiceEvent ev) {
             ServiceReference sr = ev.getServiceReference();
            switch (ev.getType()) {
                case ServiceEvent.REGISTERED: {
                     fMongoService = (ITimeSeriesMongoClientService)fContext.getService(sr);
                }
                break;
                case ServiceEvent.UNREGISTERING: {
                     fMongoService = null;
                }
                break;
            }
        }
    };

     String filter = "(objectclass="
            + ITimeSeriesMongoClientService.class.getName() + ")";
     context.addServiceListener(sl, filter);
}

public ITimeSeriesMongoClientService getMongoService() {
    return this.fMongoService;
}
}

To solve import errors, edit the pom.xml file:

add a dependency:

       <dependency>
           <groupId>com.requea.dynapage</groupId>
           <artifactId>com.requea.dynapage.mongo</artifactId>
           <scope>provided</scope>
           <version>4.0.245</version>
       </dependency>

add an import package:

com.requea.dynapage.mongo,

add a field bundle-activator after Import-Package mark:

<Bundle-Activator>com.requea.schneider.dlvm.Activator</Bundle-Activator>

Under src/main/META-INF, edit MANIFEST.MF:

add com.requea.dynapage.mongo in the section Import-Package
add the section Bundle-Activator: com.requea.name.Activator

Recompile the bundle with the command line mvm eclipse:eclipse

You can now add your bundle by typing that command in the shell platform (under http://localhost:8080/dysoweb/dysoweb/panel/secure/shell.jsp):

start reference:file: /path to the bundle com.requea.name/src/main

If you change the version of Mongo and get an authentication error, you have to delete and recreate the folder /data/db

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Created by Pierre Dubois on 2015/06/11 10:51

MongoDB

Use MongoDB

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