grails mongodb 3.0.2 plugin join queries on associations using createCriteria() - mongodb

Question

I am trying to search for users with particular role using createCriteria().I have three domain classes: User, Role and UserRole (they are from SpringSecurity).
class UserRole implements Serializable {
User user
Role role
static constraints = {
user nullbale: false
role nullable: false
}
static mapping = {
version: false
id composite: ['role', 'user']
}
}
I am searching on isActive, name or username fields on User Domain and authority field on Role Domain .
def c = UserRole.createCriteria()
def results = c {
user {
eq("isActive", true)
or {
ilike("name", "somename")
ilike("username", "someusername")
}
}
role {
eq("authority", "ROLE_USER")
}
}
On running this I get UnsupportedOperationException from mongo plugin. Here is stacktrace
ERROR errors.GrailsExceptionResolver - UnsupportedOperationException occurred when processing request: [GET] /users/search - parameters:
query:
Join queries are not supported by MongoDB. Stacktrace follows:
Message: Join queries are not supported by MongoDB
Line | Method
->> 162 | handle in org.grails.datastore.mapping.mongo.query.MongoQuery$2
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 142 | handle in ''
| 1091 | populateMongoQuery in org.grails.datastore.mapping.mongo.query.MongoQuery
| 993 | executeQuery in org.grails.datastore.mapping.mongo.query.MongoQuery$58
| 861 | doInDB . . . . . . in ''
| 833 | doInDB in ''
| 542 | list . . . . . . . in org.grails.datastore.mapping.query.Query
| 325 | invokeMethod in grails.gorm.CriteriaBuilder
| 17 | $tt__searchUsers . in com.themopi.apis.searchactivity.SearchService
| 29 | searchUser in com.themopi.apis.search.SearchController
| 198 | doFilter . . . . . in grails.plugin.cache.web.filter.PageFragmentCachingFilter
| 63 | doFilter in grails.plugin.cache.web.filter.AbstractFilter
| 106 | processFilterChain in com.odobo.grails.plugin.springsecurity.rest.RestTokenValidationFilter
| 72 | doFilter in ''
| 53 | doFilter . . . . . in grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
I found a Jira on this issue but it is unresolved.
Any work around for this till now as jira was created on 09/Mar/12 or I am missing something?
I will be using pagination and projections in this query?
Any help or guidance is highly appreciated.
Thanks in advance.

Answer 1

there's an excellent article from Burt on this topic.
One of the main parts of it is, that the security model should be implemented with embedded/sub-doc entities. Actually joins shouldn't be used with mongo at all, and if you need those, use a RDBMS or Graph DB.