I believe Norberto ment he was handling it in his update client code --
before sending the docs to Solr.
Something that *seems* possible but I've never actaully tried is writting
a "ConcatTokenFilterFactory" that queues up all the tokens and joins
them together (using some confiured string, defaulting to "") then you
could in theory do something like this...
<fieldType name="compositeKeyType" class="solr.TextField" omitNorms="true">
<analyzer>
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.ConcatTokenFilterFactory" delim="-"/>
<analyzer>
</fieldType>
...
<field name="compositeKey" type="compositeKeyType" />
<uniqueKey>compositeKey</uniqueKey>
...
<copyField source="type" dest="compositeKey"/>
<copyField source="numId" dest="compositeKey"/>
...
that *might* work ... but things would be a little weird when viewing your
results (compositeKey would have to be multivalued, and it would return as
an array)
-Hoss
