HashMap as return value from Java method in R?

Posted by Martin on Stack Overflow See other posts from Stack Overflow or by Martin
Published on 2010-03-16T18:36:59Z Indexed on 2010/03/16 18:41 UTC
Read the original article Hit count: 241

Filed under:

r

|

java

Hi,

is it possible to return a HashMap to R with the rJava extension of R? E.g. I have a method in Java, which returns a HashMap and I want this HashMap use in R. I tried:

.jcall(javaObj, "Ljava/util/HashMap", "getDbInfoMap")

This doesn't work.
Do I have to put everything into a String[], that I want to pass to R from Java? Or is there another possibility?

Any help/info on this would be greatly appreciated.

Related posts about java

Tomcat 6: Access Control Exception?

as seen on Server Fault - Search for 'Server Fault'
I'm trying to setup a tomcat6 server, and I'm trying to match another setup someone else established. However, my deployment (default Ubuntu install) uses a policy.d/ directory structure, and the established server just uses a catalina.policy file. I've tried setting every entry in policy.d to match… >>> More
Problem in creation MDB Queue connection at Jboss StartUp

as seen on Stack Overflow - Search for 'Stack Overflow'
I am not able to create a Queue connection in JBOSS4.2.3GA Version & Java1.5, as I am using MDB as per the below details. I am putting this MDB in a jar file(named utsJar.jar) and copied it in deploy folder of JBOSS, In the test env. this MDB works well but in another env. [ env settings and… >>> More
failing to establish connection between Postgres db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am using Postgres and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When I try to connect it gives "ClassNotFoundException". Here is what I get when I try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
failing to establish connection between postgre db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, For i am using postgre and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When i try to connect it gives "ClassNotFoundException". Here is what i get when i try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
Migration and deployement problems JBoss 4.2.2.GA to JBoss 6.0.0.M2

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to migrate an application running on JBoss 4.2.2.GA to JBoss 6.0.0.M2 I give you some log to explain my problem : boot.log : 2010-03-16 09:59:29,406 ERROR [org.jboss.system.server.profileservice.ProfileServiceBootstrap] (Thread-2) Failed to load profile: Summary of incomplete deployments… >>> More

Developer IT

HashMap as return value from Java method in R? - Developer IT

HashMap as return value from Java method in R?

r

java

Related posts about r

Related posts about java

Tomcat 6: Access Control Exception?

Problem in creation MDB Queue connection at Jboss StartUp

failing to establish connection between Postgres db and gwt

failing to establish connection between postgre db and gwt

Migration and deployement problems JBoss 4.2.2.GA to JBoss 6.0.0.M2

Categories cloud