例子：
package main import (
"fmt"
"github.com/blevesearch/bleve"
) func main() {
// open a new index
mapping := bleve.NewIndexMapping()
index, err := bleve.New("example.bleve", mapping)
if err != nil {
fmt.Println(err)
return
} data := struct {
Name string
Des string
}{
Name: "hello world this is bone",
Des: "this is a good time",
} // index some data
index.Index("id", data) // search for some text
query := bleve.NewMatchQuery("this is bone")
search := bleve.NewSearchRequest(query)
searchResults, err := index.Search(search)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(searchResults)
}
mapping这里：
// NewIndexMapping creates a new IndexMapping that will use all the default indexing rules
func NewIndexMapping() *mapping.IndexMappingImpl {
return mapping.NewIndexMapping()
}
难道是使用和lucene一样的？？？
// NewIndexMapping creates a new IndexMapping that will use all the default indexing rules
func NewIndexMapping() *IndexMappingImpl {
return &IndexMappingImpl{
TypeMapping: make(map[string]*DocumentMapping),
DefaultMapping: NewDocumentMapping(),
TypeField: defaultTypeField,
DefaultType: defaultType,
DefaultAnalyzer: defaultAnalyzer,
DefaultDateTimeParser: defaultDateTimeParser,
DefaultField: defaultField,
IndexDynamic: IndexDynamic,
StoreDynamic: StoreDynamic,
CustomAnalysis: newCustomAnalysis(),
cache: registry.NewCache(),
}
}
New就是设置索引目录和mapping。
// New index at the specified path, must not exist.
// The provided mapping will be used for all
// Index/Search operations.
func New(path string, mapping mapping.IndexMapping) (Index, error) {
return newIndexUsing(path, mapping, Config.DefaultIndexType, Config.DefaultKVStore, nil)
}
index文档实现:
// Index adds the specified index operation to the
// batch. NOTE: the bleve Index is not updated
// until the batch is executed.
func (b *Batch) Index(id string, data interface{}) error {
if id == "" {
return ErrorEmptyID
}
doc := document.NewDocument(id)
err := b.index.Mapping().MapDocument(doc, data)
if err != nil {
return err
}
b.internal.Update(doc)
return nil
}
其中，NewDocument实现：
type Document struct {
ID string `json:"id"`
Fields []Field `json:"fields"`
CompositeFields []*CompositeField
Number uint64 `json:"-"`
}
func NewDocument(id string) *Document {
return &Document{
ID: id,
Fields: make([]Field, ),
CompositeFields: make([]*CompositeField, ),
}
}MappingDocument实现：
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 {
docMapping.walkDocument(data, []string{}, []uint64{}, walkContext)
// see if the _all field was disabled
allMapping := docMapping.documentMappingForPath("_all")
if allMapping == nil || (allMapping.Enabled != false) {
field := document.NewCompositeFieldWithIndexingOptions("_all", true, []string{}, walkContext.excludedFromAll, document.IndexField|document.IncludeTermVectors)
doc.AddField(field)
}
}
return nil
}我晕，看来bleve真的是和lucene设计一样！也有_all属性。
难道后面倒排列表也会使用skip list？？？