[opencms-dev] Lucene date range search in individual xmlContent date fields

Tue May 22 20:34:49 CEST 2012

Hi Rüdiger,

thanx a lot.
That looks good at a first glance.
I will try that tomorrow and tell if things worked out.

Kind regards, Bernd

> -----Ursprüngliche Nachricht-----
> Von: "Rüdiger Kurz (list)" [mailto:r.kurz at alkacon.com]
> Gesendet: Dienstag, 22. Mai 2012 19:18
> An: ocms at code-create.de; The OpenCms mailing list
> Betreff: Re: [opencms-dev] Lucene date range search in individual
> xmlContent date fields
> 
> Hi Bernd,
> 
> OpenCms 7.5.x supports the configuration of field mappings that is done
> in the opencms-search.xml. If you add a field mapping like:
> 
> <field name="my_date" store="true" index="true">
> <mapping type="dynamic"
> class="example.MyFieldMapping">my_date</mapping>
> </field>
> 
> you are able to create a class that extends CmsSearchFieldMapping and
> overwrite the method getStringValue:
> 
> https://github.com/alkacon/opencms-
> core/blob/branch_7_5_x/src/org/opencms/search/fields/CmsSearchFieldMapp
> ing.java#L141
> 
> String getStringValue(
>          CmsObject cms,
>          CmsResource res,
>          I_CmsExtractionResult extractionResult,
>          List<CmsProperty> properties,
>          List<CmsProperty> propertiesSearched) {
> 
>      // for example write something like:
> 
>      String result = null;
>      if (getType().getMode()
>          == CmsSearchFieldMappingType.DYNAMIC.getMode()
>         && "my_date".equals(getParam())) {
> 
>          // do your special date mapping here
>          // Generate date terms for optimized date range search.
>          // @see CmsLuceneIndex#getDateRangeSpan(long, long)
>          // *** return the String representation of that terms ***
>      }
>      return super.getStringValue(
>          cms,
>          res,
>          extractionResult,
>          properties,
>          propertiesSearched);
> }
> 
> *** return the String representation of that terms ***
> maybe this utility method from OpenCms v8 is interesting for you:
> 
> https://github.com/alkacon/opencms-
> core/blob/master/src/org/opencms/search/fields/CmsSearchFieldConfigurat
> ion.java#L132
> 
> I know this is really concrete but anyway I hope that it will give you
> a
> hand...
> 
> regards
> Rüdiger
> 
> On 05/22/2012 06:34 PM, ] Code Create [ Bernd Wolfsegger wrote:
> > Hi Rüdiger,
> >
> > thanx for your answer.
> >
> > As I understood it, Lucene (up to version 2.9) range search is only
> done
> > lexographically, so date values have to be saved in the index in a
> string
> > format like "yyyyMMddHHmmss".
> > Search itself is handled by lucene then.
> > So does OpenCms store its "date" xml content values (as defined in an
> xml
> > content schema) that way in the index when mapped for a file via the
> field
> > configuration?
> > Or do you have to write that extra lines of Java classes for this
> purpose :)
> >
> > Is there a difference between OpenCms 7.5.x and 8.0.x in that matter?
> Lucene
> > 2.9 and up is capable of handling other than String data.
> >
> > By the way. I don't want to restrict my search to date values. I'd
> like to
> > include search for dates and date ranges transparently with searching
> in
> > other text fields.
> >
> > So one is able to search by: "mydate:[201205 TO 201206]"
> > As well as: "some other searchterm"
> >
> > Kind regards, Bernd
> >
> >
> >> -----Ursprüngliche Nachricht-----
> >> Von: "Rüdiger Kurz (list)" [mailto:r.kurz at alkacon.com]
> >> Gesendet: Dienstag, 22. Mai 2012 16:51
> >> An: ocms at code-create.de; The OpenCms mailing list
> >> Betreff: Re: [opencms-dev] Lucene date range search in individual
> >> xmlContent date fields
> >>
> >> Hi,
> >>
> >> performance is the reason for not using "long" values to search for
> >> date
> >> ranges.
> >>
> >> If you want to restrict your search based on an individual dates
> >> specified in a schema of an XML content. You don't come along
> writing
> >> some lines of Java classes, compile them and put them into the class
> >> path of the servlet container.
> >>
> >> Please let me know, if this would be a possibility for you.
> >>
> >> greetings
> >> Rüdiger
> >>
> >> On 05/22/2012 04:36 PM, ] Code Create [ Bernd Wolfsegger wrote:
> >>> Hi,
> >>>
> >>> does anyone know how to accomplish this, if it is possible at all?
> >>> I have no problem searching with a query like: "created:[201205 TO
> >> 201206]"
> >>> But how do I configure fields to search in for my own specific xml-
> >> content
> >>> date fields?
> >>> I tried a field configuration where I mapped an xml-content date
> >> field, but
> >>> I didn't get any results in the search.
> >>> I'm using the Lucene Snowball analyzer (2.4.1)
> >>>
> >>> Anyone tried similar stuff ? :-)
> >>>
> >>> Thanx for any hints.
> >>>
> >>> Still using OpenCms 7.5.1
> >>>
> >>>
> >>> Kind regards, Bernd
> >>>
> >>> _______________________________________________
> >>> This mail is sent to you from the opencms-dev mailing list
> >>> To change your list options, or to unsubscribe from the list,
> please
> >> visit
> >>> http://lists.opencms.org/cgi-bin/mailman/listinfo/opencms-dev
> >>>
> >>>
> >>>
> >>
> >> --
> >> Kind Regards,
> >> Rüdiger.
> >>
> >> -------------------
> >>
> >> Visit OpenCms Days 2012 Conference and Expo September 24 to 25, 2012
> in
> >> Cologne, Germany http://www.opencms-days.org
> >>
> >> Rüdiger Kurz
> >>
> >> Alkacon Software GmbH  - The OpenCms Experts
> >> http://www.alkacon.com - http://www.opencms.org
> >
> > _______________________________________________
> > This mail is sent to you from the opencms-dev mailing list
> > To change your list options, or to unsubscribe from the list, please
> visit
> > http://lists.opencms.org/cgi-bin/mailman/listinfo/opencms-dev
> >
> >
> >
> 
> --
> Kind Regards,
> Rüdiger.
> 
> -------------------
> 
> Visit OpenCms Days 2012 Conference and Expo September 24 to 25, 2012 in
> Cologne, Germany http://www.opencms-days.org
> 
> Rüdiger Kurz
> 
> Alkacon Software GmbH  - The OpenCms Experts
> http://www.alkacon.com - http://www.opencms.org