Changes between Version 54 and Version 55 of ReleaseNotes


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Timestamp:
29.01.2013 17:55:00 (8 years ago)
Author:
jri
Comment:

4.0.14 release notes, pt. 1

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  • ReleaseNotes

    v54 v55  
    22 
    33= Release Notes = 
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     6 
     7== 2013-1-?: DeepaMehta 4.0.14 == 
     8 
     9Improvements: 
     10* For better performance with large amounts of data the storage layer is completely rewritten. Traversal is speedup by a new Lucene association index (#389). 
     11* Association user data is indexed as well (analogous to topic user data) (#389). 
     12* More performant architecture: A storage implementation is coded directly to the DeepaMehta model API. The additional bridging layer is dropped. The concept of a DM-independant MehtaGraph API is abolished. There is no dependency on the external Neo4j MehtaGraph library anymore (#389).  
     13* Modular storage layer: a new service provider interface (`de.deepamehta.core.storage.spi.DeepaMehtaStorage`) allows 3rd-party developers to implement the DeepaMehta storage layer based on alternate DBs (besides Neo4j). Storage implementations are deployed as OSGi services (#391). 
     14* No transactions are created anymore for DB read operations. This may yield a performance benefit (#406). 
     15* Delivering core events involves no runtime reflection anymore. This may yield a performance benefit (#352). 
     16* AssociationDefinition API is simplified and redundancy is removed from serialization format (#393). 
     17* Association's Instantiation associations can be queried by type (#338). 
     18* Neo4j is updated from 1.8 to 1.8.1 
     19 
     20Bug Fixes: 
     21* This exception should no longer be thrown (#392): 
     22`java.lang.IllegalArgumentException: Reference error: ID 1234 refers to a MehtaEdge when the caller expects a MehtaNode` 
    423 
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