082a5b0b03
now can track array positions for field values stored fields now include this in the key and the back index now uses protobufs to simplify serialization closes #73
99 lines
2.8 KiB
Go
99 lines
2.8 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package document
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import (
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"fmt"
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"github.com/couchbaselabs/bleve/analysis"
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)
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const DEFAULT_TEXT_INDEXING_OPTIONS = INDEX_FIELD
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type TextField struct {
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name string
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arrayPositions []uint64
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options IndexingOptions
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analyzer *analysis.Analyzer
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value []byte
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}
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func (t *TextField) Name() string {
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return t.name
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}
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func (t *TextField) ArrayPositions() []uint64 {
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return t.arrayPositions
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}
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func (t *TextField) Options() IndexingOptions {
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return t.options
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}
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func (t *TextField) Analyze() (int, analysis.TokenFrequencies) {
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var tokens analysis.TokenStream
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if t.analyzer != nil {
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tokens = t.analyzer.Analyze(t.Value())
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} else {
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tokens = analysis.TokenStream{
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&analysis.Token{
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Start: 0,
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End: len(t.value),
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Term: t.value,
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Position: 1,
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Type: analysis.AlphaNumeric,
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},
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}
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}
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fieldLength := len(tokens) // number of tokens in this doc field
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tokenFreqs := analysis.TokenFrequency(tokens)
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return fieldLength, tokenFreqs
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}
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func (t *TextField) Value() []byte {
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return t.value
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}
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func (t *TextField) GoString() string {
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return fmt.Sprintf("&document.TextField{Name:%s, Options: %s, Analyzer: %s, Value: %s}", t.name, t.options, t.analyzer, t.value)
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}
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func NewTextField(name string, arrayPositions []uint64, value []byte) *TextField {
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return NewTextFieldWithIndexingOptions(name, arrayPositions, value, DEFAULT_TEXT_INDEXING_OPTIONS)
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}
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func NewTextFieldWithIndexingOptions(name string, arrayPositions []uint64, value []byte, options IndexingOptions) *TextField {
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return &TextField{
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name: name,
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arrayPositions: arrayPositions,
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options: options,
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value: value,
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}
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}
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func NewTextFieldWithAnalyzer(name string, arrayPositions []uint64, value []byte, analyzer *analysis.Analyzer) *TextField {
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return &TextField{
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name: name,
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arrayPositions: arrayPositions,
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options: DEFAULT_TEXT_INDEXING_OPTIONS,
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analyzer: analyzer,
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value: value,
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}
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}
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func NewTextFieldCustom(name string, arrayPositions []uint64, value []byte, options IndexingOptions, analyzer *analysis.Analyzer) *TextField {
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return &TextField{
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name: name,
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arrayPositions: arrayPositions,
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options: options,
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analyzer: analyzer,
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value: value,
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}
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}
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