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https://issues.apache.org/jira/browse/RYA-17?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15069782#comment-15069782
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ASF GitHub Bot commented on RYA-17:
-----------------------------------
Github user amihalik commented on the pull request:
https://github.com/apache/incubator-rya/pull/6#issuecomment-166931690
merged into develop
> Mongo DAO layer can't handle wildcard deletes
> ---------------------------------------------
>
> Key: RYA-17
> URL: https://issues.apache.org/jira/browse/RYA-17
> Project: Rya
> Issue Type: Bug
> Components: dao
> Affects Versions: 3.2.9
> Reporter: Christian Rasmussen
> Assignee: Puja Valiyil
> Fix For: 3.2.10
>
>
> When requesting a delete using wildcards for either Predicate, Object or
> Context we fail with a null pointer exception.
> [DEBUG] 2015-12-15 00:05:06,341 [repositories/rya] subj="<http://tempuri.org>"
> [DEBUG] 2015-12-15 00:05:06,348 [repositories/rya]
> ProtocolExceptionResolver.resolveException() called
> [ERROR] 2015-12-15 00:05:06,352 [repositories/rya] Error while handling
> request
> java.lang.NullPointerException: null
> at
> mvm.rya.mongodb.dao.SimpleMongoDBStorageStrategy.serialize(SimpleMongoDBStorageStrategy.java:104)
> at mvm.rya.mongodb.MongoDBRyaDAO.delete(MongoDBRyaDAO.java:110)
> at mvm.rya.mongodb.MongoDBRyaDAO.delete(MongoDBRyaDAO.java:1)
> at
> mvm.rya.rdftriplestore.RdfCloudTripleStoreConnection.removeStatementsInternal(RdfCloudTripleStoreConnection.java:513)
> at
> org.openrdf.sail.helpers.SailConnectionBase.removeStatements(SailConnectionBase.java:495)
> at
> org.openrdf.repository.sail.SailRepositoryConnection.removeWithoutCommit(SailRepositoryConnection.java:296)
> For this example, the only thing I specified in my delete request is the
> 'subj="<http://tempuri.org>”’
> Dumping out the RYAStatement content here:
> RyaStatement{subject=RyaType{dataType=http://www.w3.org/2001/XMLSchema#anyURI,
> data='http://tempuri.org'}, predicate=null, object=null, context=null,
> qualifier=null, columnVisibility=null, value=null, timestamp=1450155906348}
> This then fails in the SimpleMongoDBStorageStrategy.serialize() because we
> are trying to concatenate a bunch of fields to create the id (type String)
> String id = statement.getSubject().getData() + " " +
> statement.getPredicate().getData() + " " +
> statement.getObject().getData() + " " +
> context;
> As an aside. We do not allow subject wildcard. This appears to be deliberate
> and due to performance issues. However that seems like a feature that should
> support as well.
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