Implementation details of org.axonframework.eventstore.mongo.criteria.MongoProperty.in(Object) method

Imported from Google Groups
#1

Hi Allard,

I’m trying to read events from mongo event store with payloadType in list of classes.

I tried to use MongoCriteriaBuilder but it seems the MongoProperty.in(Object) cannot help me create query like the following:

{“payloadType”: {
“$in”: [
“com.my.package.MyEvent”,
“com.my.package.MyOtherEvent”
]
}}

I’m not a Mongo expert, so my assumption is that new BasicDBObject(operator, expression.toString()) () interprets value as a single value adding quotes. So I have the something like the following as the result:
{“payloadType”: {
“$in”: “[
“com.my.package.MyEvent”,
“com.my.package.MyOtherEvent”
]”
}}

#2

Hi Dmitriy,

I’m going to dive into this one. If I remember correctly, the expectations you have of the “in” operator are correct. It’s probably a bug in the implementation.

Thanks for reporting it.

Allard

#3

Hi Dmitriy,

the issue is solved. If you switch to the latest snapshot, it should work properly.

Cheers,

Allard

#4

Hi Allard,

Thank you for quick turnaround.

Regards,
Dmitriy

#5

What code do you use?

If I do:

MongoCriteria criteria = new MongoCriteriaBuilder().property(“payloadType”).in(new String[]{
“com.my.package.MyEvent”,
“com.my.package.MyOtherEvent”});
System.out.println(criteria.asMongoObject().toString());

I get:
{ “payloadType” : { “$in” : [ “com.my.package.MyEvent” , “com.my.package.MyOtherEvent”]}}

Looks like the thing MongoDB will understand.

#6

Allard,

please ignore the “small update.” message. I posted it one minute after the initial message just to include escaped quotes, but email seems to be delivered after you’ve updated the code.

Regards,
Dmitriy