githaven-fork/vendor/github.com/blevesearch/bleve/document/field.go
2017-01-25 10:43:02 +08:00

40 lines
1.5 KiB
Go

// Copyright (c) 2014 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package document
import (
"github.com/blevesearch/bleve/analysis"
)
type Field interface {
// Name returns the path of the field from the root DocumentMapping.
// A root field path is "field", a subdocument field is "parent.field".
Name() string
// ArrayPositions returns the intermediate document and field indices
// required to resolve the field value in the document. For example, if the
// field path is "doc1.doc2.field" where doc1 and doc2 are slices or
// arrays, ArrayPositions returns 2 indices used to resolve "doc2" value in
// "doc1", then "field" in "doc2".
ArrayPositions() []uint64
Options() IndexingOptions
Analyze() (int, analysis.TokenFrequencies)
Value() []byte
// NumPlainTextBytes should return the number of plain text bytes
// that this field represents - this is a common metric for tracking
// the rate of indexing
NumPlainTextBytes() uint64
}