func buildFuzzyQuery() *bleve.SearchRequest {
termQuery := bleve.NewFuzzyQuery("wate")
termQuery.SetField("text")
termSearch := bleve.NewSearchRequest(termQuery)
return termSearch
}
// part = lit {"~" number} | range | "(" exprList ")"
func (p *Parser) parsePart(ctx context) (query.Query, error) {
tok := p.next()
// lit
if tok.typ == tLITERAL {
var q query.Query
if strings.ContainsAny(tok.val, "*?") {
q = bleve.NewWildcardQuery(tok.val)
} else {
if p.peek().typ == tFUZZY {
fuzziness, err := p.parseFuzzySuffix()
if err != nil {
return nil, err
}
fuzz := bleve.NewFuzzyQuery(tok.val)
fuzz.SetFuzziness(fuzziness)
q = fuzz
} else {
q = bleve.NewMatchPhraseQuery(tok.val)
}
}
if ctx.field != "" {
if fieldable, ok := q.(query.FieldableQuery); ok {
fieldable.SetField(ctx.field)
} else {
return nil, ParseError{ctx.fieldPos, "unexpected field"}
}
}
return q, nil
}
if tok.typ == tQUOTED {
// strip quotes (ugh)
txt := string(tok.val[1 : len(tok.val)-1])
/*
if strings.ContainsAny(txt, "*?") {
return nil, ParseError{tok.pos, "wildcards not supported in phrases"}
}
*/
q := bleve.NewMatchPhraseQuery(txt)
if ctx.field != "" {
q.SetField(ctx.field)
}
return q, nil
}
// | "(" exprList ")"
if tok.typ == tLPAREN {
q, err := p.parseExprList(ctx)
if err != nil {
return nil, err
}
tok = p.next()
if tok.typ != tRPAREN {
return nil, ParseError{tok.pos, "missing )"}
}
return q, nil
}
// | range
if tok.typ == tLSQUARE || tok.typ == tLBRACE {
p.backup()
q, err := p.parseRange(ctx)
if err != nil {
return nil, err
}
return q, nil
}
// | relational
if tok.typ == tGREATER || tok.typ == tLESS {
p.backup()
q, err := p.parseRelational(ctx)
if err != nil {
return nil, err
}
return q, nil
}
if tok.typ == tERROR {
return nil, ParseError{tok.pos, tok.val}
}
return nil, ParseError{tok.pos, fmt.Sprintf("unexpected %s", tok.val)}
}