diff --git a/examples/beer-search/mapping.go b/examples/beer-search/mapping.go
index 8e834568..c47f4fd0 100644
--- a/examples/beer-search/mapping.go
+++ b/examples/beer-search/mapping.go
@@ -62,9 +62,10 @@ func buildIndexMapping() *bleve.IndexMapping {
 
 	indexMapping := bleve.NewIndexMapping().
 		AddDocumentMapping("beer", beerMapping).
-		AddDocumentMapping("brewery", breweryMapping).
-		SetTypeField("type").
-		SetDefaultAnalyzer(textFieldAnalyzer)
+		AddDocumentMapping("brewery", breweryMapping)
+
+	indexMapping.TypeField = "type"
+	indexMapping.DefaultAnalyzer = textFieldAnalyzer
 
 	return indexMapping
 }
diff --git a/index_impl.go b/index_impl.go
index 244f9668..d3363a82 100644
--- a/index_impl.go
+++ b/index_impl.go
@@ -86,7 +86,7 @@ func newMemIndex(mapping *IndexMapping) (*indexImpl, error) {
 
 func newIndex(path string, mapping *IndexMapping) (*indexImpl, error) {
 	// first validate the mapping
-	err := mapping.Validate()
+	err := mapping.validate()
 	if err != nil {
 		return nil, err
 	}
@@ -198,7 +198,7 @@ func openIndex(path string) (*indexImpl, error) {
 	rv.open = true
 
 	// validate the mapping
-	err = im.Validate()
+	err = im.validate()
 	if err != nil {
 		// note even if the mapping is invalid
 		// we still return an open usable index
@@ -222,7 +222,7 @@ func (i *indexImpl) Index(id string, data interface{}) error {
 	}
 
 	doc := document.NewDocument(id)
-	err := i.m.MapDocument(doc, data)
+	err := i.m.mapDocument(doc, data)
 	if err != nil {
 		return err
 	}
@@ -262,7 +262,7 @@ func (i *indexImpl) Batch(b Batch) error {
 			ib.Delete(bk)
 		} else {
 			doc := document.NewDocument(bk)
-			err := i.m.MapDocument(doc, bd)
+			err := i.m.mapDocument(doc, bd)
 			if err != nil {
 				return err
 			}
diff --git a/mapping_index.go b/mapping_index.go
index c75047d3..f993d1b3 100644
--- a/mapping_index.go
+++ b/mapping_index.go
@@ -11,7 +11,6 @@ package bleve
 
 import (
 	"encoding/json"
-	"fmt"
 	"log"
 	"reflect"
 	"time"
@@ -44,10 +43,6 @@ type IndexMapping struct {
 	cache                 *registry.Cache             `json:"_"`
 }
 
-func (im *IndexMapping) GoString() string {
-	return fmt.Sprintf("&bleve.IndexMapping{TypeMapping:%#v, TypeField:%s, DefaultType:%s}", im.TypeMapping, im.TypeField, im.DefaultType)
-}
-
 func NewIndexMapping() *IndexMapping {
 	return &IndexMapping{
 		TypeMapping:           make(map[string]*DocumentMapping),
@@ -66,7 +61,7 @@ func NewIndexMapping() *IndexMapping {
 // explicitly named and default analyzers can be built
 // explicitly named and default date parsers can be built
 // field type names are valid
-func (im *IndexMapping) Validate() error {
+func (im *IndexMapping) validate() error {
 	_, err := im.cache.AnalyzerNamed(im.DefaultAnalyzer)
 	if err != nil {
 		return err
@@ -93,36 +88,6 @@ func (im *IndexMapping) AddDocumentMapping(doctype string, dm *DocumentMapping)
 	return im
 }
 
-func (im *IndexMapping) SetDefaultMapping(defaultMapping *DocumentMapping) *IndexMapping {
-	im.DefaultMapping = defaultMapping
-	return im
-}
-
-func (im *IndexMapping) SetTypeField(typeField string) *IndexMapping {
-	im.TypeField = typeField
-	return im
-}
-
-func (im *IndexMapping) SetDefaultType(defaultType string) *IndexMapping {
-	im.DefaultType = defaultType
-	return im
-}
-
-func (im *IndexMapping) SetDefaultAnalyzer(analyzer string) *IndexMapping {
-	im.DefaultAnalyzer = analyzer
-	return im
-}
-
-func (im *IndexMapping) SetDefaultField(field string) *IndexMapping {
-	im.DefaultField = field
-	return im
-}
-
-func (im *IndexMapping) SetByteArrayConverter(byteArrayConverter string) *IndexMapping {
-	im.ByteArrayConverter = byteArrayConverter
-	return im
-}
-
 func (im *IndexMapping) mappingForType(docType string) *DocumentMapping {
 	docMapping := im.TypeMapping[docType]
 	if docMapping == nil {
@@ -207,7 +172,7 @@ func (im *IndexMapping) determineType(data interface{}) string {
 	return im.DefaultType
 }
 
-func (im *IndexMapping) MapDocument(doc *document.Document, data interface{}) error {
+func (im *IndexMapping) mapDocument(doc *document.Document, data interface{}) error {
 	// see if the top level object is a byte array, and possibly run through conveter
 	byteArrayData, ok := data.([]byte)
 	if ok {