Update bleve dependency to latest master revision (#6100)

* update bleve to master b17287a86f6cac923a5d886e10618df994eeb54b6724eac2e3b8dde89cfbe3a2

* remove unused pkg from dep file

* change bleve from master to recent revision

vendor/github.com/blevesearch/bleve/search/query/conjunction.go

@@ -70,9 +70,11 @@ func (q *ConjunctionQuery) Searcher(i index.IndexReader, m mapping.IndexMapping,
 		}
 		ss = append(ss, sr)
 	}
+
 	if len(ss) < 1 {
 		return searcher.NewMatchNoneSearcher(i)
 	}
+
 	return searcher.NewConjunctionSearcher(i, ss, options)
 }
 

vendor/github.com/blevesearch/bleve/search/query/disjunction.go

@@ -58,7 +58,8 @@ func (q *DisjunctionQuery) SetMin(m float64) {
 	q.Min = m
 }
 
-func (q *DisjunctionQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, options search.SearcherOptions) (search.Searcher, error) {
+func (q *DisjunctionQuery) Searcher(i index.IndexReader, m mapping.IndexMapping,
+	options search.SearcherOptions) (search.Searcher, error) {
 	ss := make([]search.Searcher, 0, len(q.Disjuncts))
 	for _, disjunct := range q.Disjuncts {
 		sr, err := disjunct.Searcher(i, m, options)
@@ -76,9 +77,17 @@ func (q *DisjunctionQuery) Searcher(i index.IndexReader, m mapping.IndexMapping,
 		}
 		ss = append(ss, sr)
 	}
+
 	if len(ss) < 1 {
 		return searcher.NewMatchNoneSearcher(i)
+	} else if len(ss) == 1 && int(q.Min) == ss[0].Min() {
+		// apply optimization only if both conditions below are satisfied:
+		// - disjunction searcher has only 1 child searcher
+		// - parent searcher's min setting is equal to child searcher's min
+
+		return ss[0], nil
 	}
+
 	return searcher.NewDisjunctionSearcher(i, ss, q.Min, options)
 }
 

vendor/github.com/blevesearch/bleve/search/query/query.go

@@ -296,32 +296,28 @@ func expandQuery(m mapping.IndexMapping, query Query) (Query, error) {
 	}
 
 	expand = func(query Query) (Query, error) {
-		switch query.(type) {
+		switch q := query.(type) {
 		case *QueryStringQuery:
-			q := query.(*QueryStringQuery)
 			parsed, err := parseQuerySyntax(q.Query)
 			if err != nil {
 				return nil, fmt.Errorf("could not parse '%s': %s", q.Query, err)
 			}
 			return expand(parsed)
 		case *ConjunctionQuery:
-			q := *query.(*ConjunctionQuery)
 			children, err := expandSlice(q.Conjuncts)
 			if err != nil {
 				return nil, err
 			}
 			q.Conjuncts = children
-			return &q, nil
+			return q, nil
 		case *DisjunctionQuery:
-			q := *query.(*DisjunctionQuery)
 			children, err := expandSlice(q.Disjuncts)
 			if err != nil {
 				return nil, err
 			}
 			q.Disjuncts = children
-			return &q, nil
+			return q, nil
 		case *BooleanQuery:
-			q := *query.(*BooleanQuery)
 			var err error
 			q.Must, err = expand(q.Must)
 			if err != nil {
@@ -335,7 +331,7 @@ func expandQuery(m mapping.IndexMapping, query Query) (Query, error) {
 			if err != nil {
 				return nil, err
 			}
-			return &q, nil
+			return q, nil
 		default:
 			return query, nil
 		}

vendor/github.com/blevesearch/bleve/search/query/query_string_lex.go

@@ -273,6 +273,7 @@ func inNumOrStrState(l *queryStringLex, next rune, eof bool) (lexState, bool) {
 	// see where to go
 	if !l.seenDot && next == '.' {
 		// stay in this state
+		l.seenDot = true
 		l.buf += string(next)
 		return inNumOrStrState, true
 	} else if unicode.IsDigit(next) {

vendor/github.com/blevesearch/bleve/search/query/regexp.go

@@ -15,7 +15,6 @@
 package query
 
 import (
-	"regexp"
 	"strings"
 
 	"github.com/blevesearch/bleve/index"
@@ -28,7 +27,6 @@ type RegexpQuery struct {
 	Regexp   string `json:"regexp"`
 	FieldVal string `json:"field,omitempty"`
 	BoostVal *Boost `json:"boost,omitempty"`
-	compiled *regexp.Regexp
 }
 
 // NewRegexpQuery creates a new Query which finds
@@ -64,33 +62,20 @@ func (q *RegexpQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, opti
 	if q.FieldVal == "" {
 		field = m.DefaultSearchField()
 	}
-	err := q.compile()
-	if err != nil {
-		return nil, err
+
+	// require that pattern NOT be anchored to start and end of term.
+	// do not attempt to remove trailing $, its presence is not
+	// known to interfere with LiteralPrefix() the way ^ does
+	// and removing $ introduces possible ambiguities with escaped \$, \\$, etc
+	actualRegexp := q.Regexp
+	if strings.HasPrefix(actualRegexp, "^") {
+		actualRegexp = actualRegexp[1:] // remove leading ^
 	}
 
-	return searcher.NewRegexpSearcher(i, q.compiled, field, q.BoostVal.Value(), options)
+	return searcher.NewRegexpStringSearcher(i, actualRegexp, field,
+		q.BoostVal.Value(), options)
 }
 
 func (q *RegexpQuery) Validate() error {
-	return q.compile()
-}
-
-func (q *RegexpQuery) compile() error {
-	if q.compiled == nil {
-		// require that pattern NOT be anchored to start and end of term
-		actualRegexp := q.Regexp
-		if strings.HasPrefix(actualRegexp, "^") {
-			actualRegexp = actualRegexp[1:] // remove leading ^
-		}
-		// do not attempt to remove trailing $, it's presence is not
-		// known to interfere with LiteralPrefix() the way ^ does
-		// and removing $ introduces possible ambiguities with escaped \$, \\$, etc
-		var err error
-		q.compiled, err = regexp.Compile(actualRegexp)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
+	return nil // real validation delayed until searcher constructor
 }

vendor/github.com/blevesearch/bleve/search/query/wildcard.go

@@ -15,7 +15,6 @@
 package query
 
 import (
-	"regexp"
 	"strings"
 
 	"github.com/blevesearch/bleve/index"
@@ -47,7 +46,6 @@ type WildcardQuery struct {
 	Wildcard string `json:"wildcard"`
 	FieldVal string `json:"field,omitempty"`
 	BoostVal *Boost `json:"boost,omitempty"`
-	compiled *regexp.Regexp
 }
 
 // NewWildcardQuery creates a new Query which finds
@@ -83,24 +81,13 @@ func (q *WildcardQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, op
 	if q.FieldVal == "" {
 		field = m.DefaultSearchField()
 	}
-	if q.compiled == nil {
-		var err error
-		q.compiled, err = q.convertToRegexp()
-		if err != nil {
-			return nil, err
-		}
-	}
 
-	return searcher.NewRegexpSearcher(i, q.compiled, field, q.BoostVal.Value(), options)
+	regexpString := wildcardRegexpReplacer.Replace(q.Wildcard)
+
+	return searcher.NewRegexpStringSearcher(i, regexpString, field,
+		q.BoostVal.Value(), options)
 }
 
 func (q *WildcardQuery) Validate() error {
-	var err error
-	q.compiled, err = q.convertToRegexp()
-	return err
-}
-
-func (q *WildcardQuery) convertToRegexp() (*regexp.Regexp, error) {
-	regexpString := wildcardRegexpReplacer.Replace(q.Wildcard)
-	return regexp.Compile(regexpString)
+	return nil // real validation delayed until searcher constructor
 }