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/mapping/document.go

@@ -42,7 +42,7 @@ type DocumentMapping struct {
 	Dynamic         bool                        `json:"dynamic"`
 	Properties      map[string]*DocumentMapping `json:"properties,omitempty"`
 	Fields          []*FieldMapping             `json:"fields,omitempty"`
-	DefaultAnalyzer string                      `json:"default_analyzer"`
+	DefaultAnalyzer string                      `json:"default_analyzer,omitempty"`
 
 	// StructTagKey overrides "json" when looking for field names in struct tags
 	StructTagKey string `json:"struct_tag_key,omitempty"`
@@ -324,13 +324,17 @@ func (dm *DocumentMapping) defaultAnalyzerName(path []string) string {
 }
 
 func (dm *DocumentMapping) walkDocument(data interface{}, path []string, indexes []uint64, context *walkContext) {
-	// allow default "json" tag to be overriden
+	// allow default "json" tag to be overridden
 	structTagKey := dm.StructTagKey
 	if structTagKey == "" {
 		structTagKey = "json"
 	}
 
 	val := reflect.ValueOf(data)
+	if !val.IsValid() {
+		return
+	}
+
 	typ := val.Type()
 	switch typ.Kind() {
 	case reflect.Map:
@@ -420,7 +424,11 @@ func (dm *DocumentMapping) processProperty(property interface{}, path []string,
 		if subDocMapping != nil {
 			// index by explicit mapping
 			for _, fieldMapping := range subDocMapping.Fields {
-				fieldMapping.processString(propertyValueString, pathString, path, indexes, context)
+				if fieldMapping.Type == "geopoint" {
+					fieldMapping.processGeoPoint(property, pathString, path, indexes, context)
+				} else {
+					fieldMapping.processString(propertyValueString, pathString, path, indexes, context)
+				}
 			}
 		} else if closestDocMapping.Dynamic {
 			// automatic indexing behavior

vendor/github.com/blevesearch/bleve/mapping/index.go

@@ -320,8 +320,8 @@ func (im *IndexMappingImpl) determineType(data interface{}) string {
 func (im *IndexMappingImpl) MapDocument(doc *document.Document, data interface{}) error {
 	docType := im.determineType(data)
 	docMapping := im.mappingForType(docType)
-	walkContext := im.newWalkContext(doc, docMapping)
 	if docMapping.Enabled {
+		walkContext := im.newWalkContext(doc, docMapping)
 		docMapping.walkDocument(data, []string{}, []uint64{}, walkContext)
 
 		// see if the _all field was disabled

vendor/github.com/blevesearch/bleve/mapping/reflect.go

@@ -35,6 +35,9 @@ func lookupPropertyPath(data interface{}, path string) interface{} {
 
 func lookupPropertyPathPart(data interface{}, part string) interface{} {
 	val := reflect.ValueOf(data)
+	if !val.IsValid() {
+		return nil
+	}
 	typ := val.Type()
 	switch typ.Kind() {
 	case reflect.Map: