Thanks Aroop, I tired following Streaming Expression but it doesn't work for me.
select( search(collection1,q="*:*",fl="conceptid",sort="conceptid asc",fq=storeid:"59c03d21d997b97bf47b3eeb",fq=schematype:"Article",fq=tags:"genetics", qt="/export"), conceptid as conceptid, storeid as "test_", concat([conceptid,storeid], conceptid, "-") ) It generates an exception, "Invalid expression concat([conceptid,storeid],conceptid,\"-\") - unknown operands found" Is this correct syntax? On Wed, Jun 27, 2018 at 4:30 PM, Aroop Ganguly <aroopgang...@icloud.com> wrote: > It seems like append is not available on 6.4, but concat is … > Check this out on the 6.4 branch: > https://github.com/apache/lucene-solr/blob/branch_6_4/ > solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/ops/ > ConcatOperationTest.java <https://github.com/apache/ > lucene-solr/blob/branch_6_4/solr/solrj/src/test/org/ > apache/solr/client/solrj/io/stream/ops/ConcatOperationTest.java> > > > > On Jun 27, 2018, at 1:27 PM, Aroop Ganguly <aroopgang...@icloud.com> > wrote: > > > > It should, but 6.6.* has some issues of things not working per > documentation. > > Try using 7+. > > > >> On Jun 27, 2018, at 1:24 PM, Pratik Patel <pra...@semandex.net> wrote: > >> > >> Thanks a lot for help! > >> > >> Looks like this is a recent addition? It doesn't work for me in version > >> 6.6.4 > >> > >> > >> > >> On Wed, Jun 27, 2018 at 4:18 PM, Aroop Ganguly <aroopgang...@icloud.com > > > >> wrote: > >> > >>> So it will become: > >>> select( > >>> search(..), > >>> conceptid as foo, > >>> storeid as bar > >>> append(conceptid, storeid) as id > >>> ) > >>> > >>> Or > >>> select > >>> select( > >>> search(..), > >>> conceptid as foo, > >>> storeid as bar > >>> ), > >>> foo, > >>> bar, > >>> append(foo,bar) as id > >>> ) > >>> > >>>> On Jun 27, 2018, at 1:12 PM, Aroop Ganguly <aroopgang...@icloud.com> > >>> wrote: > >>>> > >>>> this test case here will help in understanding the usage: > >>>> https://github.com/apache/lucene-solr/blob/branch_7_2/ > >>> solr/solrj/src/test/org/apache/solr/client/solrj/io/stream/eval/ > >>> AppendEvaluatorTest.java <https://github.com/apache/ > >>> lucene-solr/blob/branch_7_2/solr/solrj/src/test/org/ > >>> apache/solr/client/solrj/io/stream/eval/AppendEvaluatorTest.java> > >>>> > >>>>> On Jun 27, 2018, at 1:07 PM, Aroop Ganguly <aroopgang...@icloud.com> > >>> wrote: > >>>>> > >>>>> I think u can use the append evaluator > >>>>> https://github.com/apache/lucene-solr/blob/master/solr/ > >>> solrj/src/java/org/apache/solr/client/solrj/io/eval/AppendEvaluator.java > < > >>> https://github.com/apache/lucene-solr/blob/master/solr/ > >>> solrj/src/java/org/apache/solr/client/solrj/io/eval/ > AppendEvaluator.java> > >>>>> > >>>>> > >>>>>> On Jun 27, 2018, at 12:58 PM, Pratik Patel <pra...@semandex.net> > >>> wrote: > >>>>>> > >>>>>> Hello, > >>>>>> > >>>>>> Is there a function which can be used in Streaming Expressions to > >>>>>> concatenate two strings? I want to use it just like add(1,2) in a > >>> Streaming > >>>>>> Expression. Essentially, I want to achieve something as follows. > >>>>>> > >>>>>> select( > >>>>>> search(..), > >>>>>> conceptid as foo, > >>>>>> storeid as bar > >>>>>> concat(foo,bar) as id > >>>>>> ) > >>>>>> > >>>>>> I can use merge() function but my streaming expression is quite > >>> complex and > >>>>>> that will make it even more complex as that would be a round about > way > >>> of > >>>>>> doing it. Any idea how this can be achieved? > >>>>>> > >>>>>> Thanks, > >>>>>> Pratik > >>>>> > >>>> > >>> > >>> > > > >
