lucene solr - how to know numCount of each word in query - solr

Question

i have a query string with 5 words. for exmple "cat dog fish bird animals".
i need to know how many matches each word has.
at this point i create 5 queries:
/q=name:cat&rows=0&facet=true
/q=name:dog&rows=0&facet=true
/q=name:fish&rows=0&facet=true
/q=name:bird&rows=0&facet=true
/q=name:animals&rows=0&facet=true
and get matches count of each word from each query.
but this method takes too many time.
so is there a way to check get numCount of each word with one query?
any help appriciated!

Answer 1

In this case, functionQueries are your friends. In particular:
termfreq(field,term) returns the number of times the term appears in the field for that document. Example Syntax:
termfreq(text,'memory')
totaltermfreq(field,term) returns the number of times the term appears in the field in the entire index. ttf is an alias of
totaltermfreq. Example Syntax: ttf(text,'memory')
The following query for instance:
q=*%3A*&fl=cntOnSummary%3Atermfreq(summary%2C%27hello%27)+cntOnTitle%3Atermfreq(title%2C%27entry%27)+cntOnSource%3Atermfreq(source%2C%27activities%27)&wt=json&indent=true
returns the following results:
"docs": [
{
"id": [
"id-1"
],
"source": [
"activities",
"activities"
],
"title": "Ajones3 Activity Entry 1",
"summary": "hello hello",
"cntOnSummary": 2,
"cntOnTitle": 1,
"cntOnSource": 1,
"score": 1
},
{
"id": [
"id-2"
],
"source": [
"activities",
"activities"
],
"title": "Common activity",
"cntOnSummary": 0,
"cntOnTitle": 0,
"cntOnSource": 1,
"score": 1
}
}
]
Please notice that while it's working well on single value field, it seems that for multivalued fields, the functions consider just the first entry, for instance in the example above, termfreq(source%2C%27activities%27) returns 1 instead of 2.