Monday, January 1, 2018

cassandra Indexing and querying CQL3 collection map in Solr

cassandra Indexing and querying CQL3 collection map in Solr




cassandra - Indexing and querying CQL3 collection map in Solr -

the next documentation page datastax states:

dse search maps collections follows: collection list , set: multi-valued field collection maps: dynamic field name of dynamic field minus wildcard map name. example, map column name dyna* mapped dyna. inner keys mapped total field name.

the lastly statement not clear me. how should field definition like? assuming have collection map defined scores map<int,int> in cql3, next field definition correct?

<field name="scores*" type="int" indexed="true" stored="true"/>

and how query this? assuming maps value {201409 : 89, 201410 : 67} , want filter on inner field 201410, next correct?:

fq=scores201410:[80 *]

the name of dynamic field minus wildcard map name means next dynamic field corresponds next map name in cql:

dynamic field: <dynamicfield name="lang_*" . . . > map name: create table hits ( . . .lang_ map<text, text>, . . .);

in example, dynamic field name = scores_*.

the query depends on values insert fields. if insert these values cql scores_ column:

{ scores_100 : 5000} { scores_200 : 10000} { scores_100 : 300}

then, think query scores_100 in collection be:

http://:8983/solr/mykeyspace.myscores/select?q=scores_100%3a*&wt=xml&indent=true

solr cassandra cql3 datastax-enterprise datastax

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