Solr - search word immediately followed by partial match (with wildcard) - solr

Question

I have a Solr index filled with documents, with a field named issuer.
There is a document with issuer=first issuer.
I'm trying to implement matching of two consequent words. The first word needs to match completely, the second needs to match partially.
What I am trying to achieve is:
I search for something like: issuer:first\ iss*
I expect it to match "first iss uer"
I tried the following solutions but none is working:
issuer:first\ iss* -> returns nothing
issuer:"first iss"* -> returns everything
issuer:(first iss*) -> also returns "issuer first"
Does anybody have a clue on how to achieve the desired result?

Answer 1

My suggestion is to add a shiringle filter based field type to your schema. Below is a simple definition:
<fieldtype name="shingle">
<analyzer>
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.ShingleFilterFactory" minShingleSize="2" maxShingleSize="5"/>
</analyzer>
</fieldtype>
You then add another field with this type as shown below:
<field name="issuer_sh" type="shingle" indexed="true" stored="false"/>
At query time, you can issue the following query:
issuer_sh:"first iss*"
The shingleFilter creates n-gram tokens from your text. For instance, if the issuer field contains "first issue", then Solr will create and index the following tokens:
first
issue
first issue

Answer 2

You can't search with wildcards in phrase queries. Without changing how you are indexing (see #ameertawfik's answer), the standard query parser doesn't provide a good way to do this. You can, however, use the surround query parser to search using spans. This query would then look like:
1N(first, iss*)
Keep in mind, surround query parser does not analyze, so 1N(first, iss*) and 1N(First, iss*) will not find the same results.
You could also construct this query using lucene's SpanQueries directly, of course, like:
SpanQuery[] queries = new SpanQuery[2];
queries[0] = new SpanTermQuery(new Term("issuer","first"));
queries[1] = new SpanMultiTermQueryWrapper(new PrefixQuery(new Term("issuer","iss")));
Query finalQuery = new SpanNearQuery(queries, 0, true);