Hi Rupert. Thanks for the reply. The Stanbol is already configured with the external Solr Server. However I´m having troubles to perform queries with the dynamic fields created. For example, I have a field* *with the name *@/DC-ELEMENTS:CREATOR/* that was created to store the values of the dc:creator field indexed. Can you explain me please how to make a query for example to this field?
João Oliveira 2011/9/26 Rupert Westenthaler <[email protected]> > Hi > > On Mon, Sep 26, 2011 at 3:16 PM, Olivier Grisel > <[email protected]> wrote: > > 2011/9/26 João Pedro Oliveira <[email protected]>: > >> Good Afternoon. > >> > >> Is there any way to use the Solr Service through Apache Stanbol? I need > to > >> make a faceting search over my entities stored in the entity hub. I´m > >> currently using the Query and Find endpoints from Stanbol but wath I > wanted > >> was to make a more simple search, just dividing my files by categories > to > >> get the total number of indexed files in each one. > > Currently the only possibility us to configure the Entityhub to use an > external SolrServer. > > You can use a normal SolrServer (version 3.3+). However you need to > configure it with a core compatible to the configuration expected by > the SolrYard. > If you want to start from scratch you can find the default configuration at > [1]. > If you want to reuse the current data you can find the currently used > index under > > {stanbol-root}/sling/entityhub/solrYard/indexes/{index} > > Just copy the {index} over to the external SolrServer. > > To configure the Entityhub to use an external SolrServer > > * go to the configuration tab of the Apache Felix Webconsole > (http://localhost:8080/system/console/configMgr) > * search for the "Apache Stanbol Entityhub Yard: Solr Yard Configuration" > * open the configuration of the correct SolrYard > * change the value of the "Solr Index/Core" to the external "http://.."; > url. > > Before writing Queries you need to know how the SolrYard encodes RDF > Properties in field: > > In general: > > * All triples with the same subject are added to the same Solr > document with the "uri":"{subject} > * RDF properties are encoded "{prefix}/{ns-prefix}:{local-name}/" > where the {prefix} represents the datatype/language of the value > > (1) namespace prefix mappings > > All {ns-prefix} used within the index are stored in a special document > within the index. > This document has the id ("uri" is the field used for ids) > > "urn:eu.iksproject:rick.yard.solr:config.namespacePrefixConfig" > > all fields within this document start with "_config/" > > (2) field prefixes > > The schema.xml gives an good overview over the defined prefixes. This > file can be found under "{index}/conf/schema.xml" > > Short overview: > > * "@{lang}" for languages > * "_!@" contains all text AND string values > * "bool", "int", "lon", "flo", "dou", "cal", "dur" for primitive datatypes > * "ref" for references (URI values) > * "str" for string values of the datatype xsd:string > > special fields: > > * "uri" document id field > * "_domain" is used by the SolrYard in cases where more than one > SolrYard instances use the same SolrServer/Core > * "_text" stores all text AND string values of ALL fields (and the > default search field) > * "_ref" stores all URI values of ALL fields (can be used to semantic > context searches) > > I recommend to open an index of a SolrYard within Luke [2] and have > your own look on how the data are stored. > > @João: I know this is a little bit complex ... if you have any > additional questions feel free to ask. You can also join the #stanbol > channel on IRC and ask me directly. > > > > > I also think we should make it possible to enable the raw Solr servlet > > from the SolrYard configuration. I wonder if this would be complicated > > to implement though. > > > > Rupert, any thought? > > > > @Olivier > > In my opinion it a border line use case, because the way how the > SolrYard encodes fields would make custom queries very complex. > However if more users request this feature we need definitely have a > look. > > In case of an external SorlServer we could simple forward requests. In > case of an EmbeddedSolrServer I do have access to the SolrCore. > Hopefully one can initialize the sold servlet based on that. > > best > Rupert > > > [1] > http://svn.apache.org/repos/asf/incubator/stanbol/trunk/entityhub/yard/solr/src/main/resources/solr/core/default.solrindex.zip > [2] http://code.google.com/p/luke/ > > -- > | Rupert Westenthaler [email protected] > | Bodenlehenstraße 11 ++43-699-11108907 > | A-5500 Bischofshofen >
