Partial matching for phrases

[Enisha [Outlook] Eshwar]

Hi all,

I am new to Bleve. Excited to see a text indexing and search library which is very easy to use and with a wide variety of functions in Golang.

I have a newbie question. Hope this community can help me. Apologies if I've missed the obvious.

I am looking for a way to do a partial phrase match.

Example:

String to be indexed: Harry Potter and the Cursed Child

SearchTerm: harry p

I am trying to make the above search term match the indexed document.

I have a custom analyzer with a whitespace tokenizer, to_lower token filter. 

I've tried a couple of things, but haven't been able to get this working. 

Option #1

query1= NewMatchQuery("harry")

query2= NewWildcardQuery("p*)

finalQuery =NewBooleanQuery()

query1.AddMust(query1)

query1.AddMust(query2)

This is able to match "Harry Potter and the Cursed Child" but it also matches terms like "Prince Harry" (order of terms is not maintained).

Option #2

I also tried a regex query with regex expression: 

        finalWord := "/.*" + firstSearchTerm + " " + secondSearchTerm + ".*/"

In Lucene, I had used SpanQuery with 0 distance between the two to achieve the above. 

query1 = SpanTermQuery(word1)

query2 = SpanMultiTermQueryWrapper(new WildcardQuery(word2+"*"))

finalQuery = SpanNearQuery(query1, query2, 0)

I've also tried PrefixQuery, MatchPhraseQuery. PrefixQuery seems to be working only for a single word searchTerm and MatchPhraseQuery needs the whole word to match.

Please let me know if you know a solution to my problem.