EntityManagerFactory with external properties throws NullPointerException

[ansarrafique]

I am using Kundera 2.13. If I want to create entity manager factory with external properties, do I have specify ALL PERSISTENCE UNIT PROPERTIES in map ? I am getting NullPointerException if I specify some properties in persistence unit and some provided in map. Is this supported ?

[ansarrafique]

I don't know if it has support yet in Kundera ?

[mevivs]

Few properties are mandatory. AFAIK But kundera.nodes should definite ly be overridden
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[mevivs]

AFAIK It is supported and should work. Kundera team?

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[ansarrafique]

Apparently it works if properties already exist in persistence.xml configuration file and one is willing to override it OR there is an empty persistence-unit. I have a case when some properties can be defined in persistence.xml configuration file and some cannot.

[kkmishra]

Hi Ansar,

Please provide port along with host in property map.

Map<String, Object> test = new HashMap<String, Object>();
test.put("kundera.nodes", "localhost");
test.put("kundera.port", "port number");
entityManager =Persistence.createEntityManagerFactory("test",test);

Hope it will help you.

On Tue, Aug 5, 2014 at 7:48 PM, ansarrafique [email protected]
wrote:

Apparently it works if properties already exist in persistence.xml
configuration file and one is willing to override it OR there is an empty
persistence-unit. I have a case when some properties can be defined in
persistence.xml configuration file and some cannot.

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Kuldeep Kumar Mishra
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[sanjivsingh]

NullPointerException have occurred to me as well . I have seen only in case i override "kundera.nodes" only (not "kundera.port"). Other than that it will fetch other parameter property value from persistant.xml.

Map<String, String> paramMap = new HashMap<>();
paramMap.put("kundera.nodes", host);
EntityManagerFactory emf = Persistence.createEntityManagerFactory("CassandraPU", paramMap);

For me,if you override "kundera.nodes" property , then you must override "kundera.port" property. which is not expected. If "kundera.port" is not there in argument map, then it should get it from persistant.xml.

[mevivs]

Keep a dummy value of kundera.nodes and kundera.host in persistence.xml and override as many times as you want. This is an issue or a protocol? Kundera team can decide on it. IMHO, having dummy or fallback configuration in persistence.xml is a better configuration

-Vivek

[ansarrafique]

Hi Kuldeep and Vivek,

Thank you for your reply. As I said, there is no problem if dummy properties or even properties with real values are defined in persistence.xml file. The map properties will override it. The only case I see, if node property doesn't exist in persistence.xml and is provided via map. In idea case it should not be an exception, but it's not a big requirement I guess so things are cool so far. Thanks.

Ansar

[ansarrafique]

Kundera team: Do you want me to close this issue ?

[impetus-opensource-admin]

Hi Ansar ... Although not a blocking one, but would suggest you to please keep this defect open. It's a small fix and we would deliver it next release.

[ansarrafique]

Perfect, also now I can see a scenario when this would be a big plus. Thanks.

[chhavigangwal]

Fixed with Kundera -2.14 Release