Sorry for opening a new thread. As i sent first message w/o subscribing the mailing list, i couldn't find a possible solution to reply original thread. The messaging stream is attached below.
Actually the requirement came up from such a scenario: We collect some xml documents from some external resources and need to parse those xml docs and index some part of them. But those xml docs have different roots and attributes in. So we generate all possible classes for each root type via JAXB. As each document have different informative values, each of them should be indexed into seperate solr instances. The module we wrote simply generates a solr schema template with respect to all aggregative objects in root object (recursively) except annotation @SolrIndexIgnore owners. And also we are able to generate a SolrDocument from given object and index it to specified solr instance. While retrieving results from solr, we generate a list of this object's, from SolrDocument instances. Hibernate configuration for Lucene indexing is a bit different i thought, as we are able to generate solr-schema from given object. Best. -----Original Message----- From: Tuğcem Oral Sent: Tuesday, June 04, 2013 8:57 AM To: solr-user@lucene.apache.org Subject: Solr - ORM like layer Hi folks, I wonder that there exist and ORM like layer for solr such that it generates the solr schema from given complex object type and index given list of corresponding objects. I wrote a simple module for that need in one of my projects and happyly ready to generalize it and contribute to solr, if there's not such a module exists or in progress. Thanks all. -- TO Solr doesn't support complex objects directly - you must flatten and otherwise denormalize them. If you do want to store something like a graph in Solr, make each node a separate document (and try to avoid the temptation to play games with dynamic and multivalued fields). But if you have a tool to automatically flatten and denormalize complex objects and graphs and database joins, great. Please describe what it actually does in a little more (but not excessive) detail. -- Jack Krupansky -----Original Message----- From: Tuğcem Oral Sent: Tuesday, June 04, 2013 8:57 AM To: solr-user@lucene.apache.org Subject: Solr - ORM like layer Hi folks, I wonder that there exist and ORM like layer for solr such that it generates the solr schema from given complex object type and index given list of corresponding objects. I wrote a simple module for that need in one of my projects and happyly ready to generalize it and contribute to solr, if there's not such a module exists or in progress. Thanks all. -- TO If by ORM you mean Object Relational Mapping, Hibernate has annotations for Lucene and if my memory doesn't betray me I think you can configure a Solr server at Hibernate config. I have successfully mapped POJO's to Lucene and done text search, it all happens like magic once your annotations and configuration is right. Hope that helps, Guido. On 04/06/13 13:57, Tuğcem Oral wrote: > Hi folks, > > I wonder that there exist and ORM like layer for solr such that it > generates the solr schema from given complex object type and index given > list of corresponding objects. I wrote a simple module for that need in one > of my projects and happyly ready to generalize it and contribute to solr, > if there's not such a module exists or in progress. > > Thanks all. -- TO
