Hi Paul
On 11/28/2012 09:24 PM, Paul Libbrecht wrote:
Jérôme,
you definitely have my +1.
And that's yet another feature of an automated schema generation.
I'm not sure where the schema generation lays here. I'm proposing to
have all XWiki field types mapped correctly in the schema.xml, not to
generate those at run-tim. There's still the question of custom field
types, though, now that XWiki supports them (via components implementing
MetaClass).
One big plus of this is that indexing can optimize on these types for storage
and retrieval.
I'm fearing, however, that it adds to the work of solr implementation.
I do not understand why you would have property_text and property_integer...
why not have latitude, and latitude is a float?
I took the example of integers because it's an object type we have in
XWiki already and that is not indexed as such in lucene/solr. For
lat/lon I leaning towards doing what is described here :
http://wiki.apache.org/solr/SolrAdaptersForLuceneSpatial4#Indexing.
My idea is not to have field mappings per XWiki class, but per field
type. Is that what you meant as well ?
I think you are aiming more and more at a flexible query expansion routine,
correct?
(one that flexibly accepts field values depending on type and that expands across
languages for multilang queriers?). This goes along making the query expansion a default
first-class citizen and go away of the limited "a single string for a query".
Yes that definitely make sense. Note that we could still have support
for a single string query (and will need to actually), and have it
expand according to settings, etc.
Thanks for your feedback
Jerome
paul
Le 28 nov. 2012 à 18:07, Jerome Velociter a écrit :
Hello devs,
This mail following a discussion we've had with Eduard on IRC concerning the
indexing of object property values. On the current Solr implementation as well
as on our lucene plugin, all property values are stored as text/strings. I've
expressed the idea that we probably want to store each object's property in a
field that matches the XClass property field type. For example, store integers
in integer field types, double as doubles, etc.
My personnal use case is to store geo objects (for example long/lat
coordinates), but I think this has value for other types, numbers for example
(it means you can use those numbers as such when querying for instance).
Now this will increase the complexity of querying since you would have for example
property_text, property_integer, property_double, etc. vs. just propertvalue. Again, I
think this complexity should be hidden by the "expending API" Paul mentionned
in the mail regarding document translations.
WDYT ?
Jerome
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