[
https://issues.apache.org/jira/browse/SOLR-1913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13464779#comment-13464779
]
Lars commented on SOLR-1913:
----------------------------
I implemented the BitwiseQueryParserPlugin as described above. Our solr 3.6.1
is still working. Now I need to implement the bitwise operator into the query,
but I don't know how.
What I want to do is:
A document has a bitmask which defines the access permissions a user has. The
search should only return the results where the document bit are set in the
users bitmask. In pseudo code it looks like:
{code}document.bitmask == (document.bitmask BITWISE_AND users.bitmask){code}
Could this be implemented with the BitwiseQueryParserPlugin? It's even a bit
mor complicated, but maybe I'll figure out the rest on my own.
What I tried to now:
Get all documents which maches exactly the bitmask ... this works well, without
bitwise operations:
http://solr:8080/solr/select?qf=t_title&fl=*,score&fq=is_bitmask:1234
Next step: Use the bitwise operator:
http://solr:8080/solr/select?qf=t_title&fl=*,score&fq={!bitwise
field=is_bitmask op=AND source=1234}*
This fails. The Message from error log:
{code}
Sep 27, 2012 8:57:41 AM org.apache.solr.core.SolrCore execute
INFO: [] webapp=/solr path=/select
params={qf=t_title&fl=*,score&fq={!bitwise+field%3Dis_bitmask+op%3DAND+source%3D1234}}
status=500 QTime=15
Sep 27, 2012 8:57:41 AM org.apache.solr.common.SolrException log
SEVERE: java.lang.NullPointerException
at org.apache.lucene.search.FilteredQuery.hashCode(FilteredQuery.java:268)
at java.util.AbstractList.hashCode(AbstractList.java:542)
at org.apache.solr.search.QueryResultKey.<init>(QueryResultKey.java:49)
at
org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1084)
at org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:375)
at
org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:394)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:186)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1376)
at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:365)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:260)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:636)
{code}
schema.xml defines the bitmask field as
<dynamicField name="is_*" type="tlong" multiValued="false" termVectors="true" />
... while tlong means:
<fieldType name="tlong" class="solr.TrieLongField" indexed="true" stored="true"
precisionStep="8" omitNorms="true" positionIncrementGap="0"/>
... instead of tlog I also tried with integer:
<fieldType name="integer" class="solr.IntField" omitNorms="true"/>
but same result.
I use the schema.xml provided by the drupal module
[search_api_solr|http://drupal.org/project/search_api_solr]
Any suggestions? I'm not a java developer and also new to solr.
@Arnaud: Did you figure out how to chain/combine the filters?
> QParserPlugin plugin for Search Results Filtering Based on Bitwise Operations
> on Integer Fields
> -----------------------------------------------------------------------------------------------
>
> Key: SOLR-1913
> URL: https://issues.apache.org/jira/browse/SOLR-1913
> Project: Solr
> Issue Type: New Feature
> Components: search
> Reporter: Israel Ekpo
> Fix For: 4.1
>
> Attachments: bitwise_filter_plugin.jar, SOLR-1913.bitwise.tar.gz
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> BitwiseQueryParserPlugin is a org.apache.solr.search.QParserPlugin that
> allows
> users to filter the documents returned from a query
> by performing bitwise operations between a particular integer field in the
> index
> and the specified value.
> This Solr plugin is based on the BitwiseFilter in LUCENE-2460
> See https://issues.apache.org/jira/browse/LUCENE-2460 for more details
> This is the syntax for searching in Solr:
> http://localhost:8983/path/to/solr/select/?q={!bitwise field=fieldname
> op=OPERATION_NAME source=sourcevalue negate=boolean}remainder of query
> Example :
> http://localhost:8983/solr/bitwise/select/?q={!bitwise field=user_permissions
> op=AND source=3 negate=true}state:FL
> The negate parameter is optional
> The field parameter is the name of the integer field
> The op parameter is the name of the operation; one of {AND, OR, XOR}
> The source parameter is the specified integer value
> The negate parameter is a boolean indicating whether or not to negate the
> results of the bitwise operation
> To test out this plugin, simply copy the jar file containing the plugin
> classes into your $SOLR_HOME/lib directory and then
> add the following to your solrconfig.xml file after the dismax request
> handler:
> <queryParser name="bitwise"
> class="org.apache.solr.bitwise.BitwiseQueryParserPlugin" basedOn="dismax" />
> Restart your servlet container.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
