8096d9fb90
this originated from a misunderstanding of mine going back several years. the values need not be float64 just because we plan to serialize them as json. there are still larger questions about what the right type should be, and where should any conversions go. but, this commit simply attempts to address the most egregious problems
106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package highlight
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import (
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"reflect"
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"sort"
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"github.com/blevesearch/bleve/search"
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)
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type TermLocation struct {
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Term string
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ArrayPositions search.ArrayPositions
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Pos int
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Start int
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End int
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}
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func (tl *TermLocation) Overlaps(other *TermLocation) bool {
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if reflect.DeepEqual(tl.ArrayPositions, other.ArrayPositions) {
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if other.Start >= tl.Start && other.Start < tl.End {
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return true
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} else if tl.Start >= other.Start && tl.Start < other.End {
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return true
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}
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}
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return false
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}
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type TermLocations []*TermLocation
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func (t TermLocations) Len() int { return len(t) }
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func (t TermLocations) Swap(i, j int) { t[i], t[j] = t[j], t[i] }
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func (t TermLocations) Less(i, j int) bool {
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shortestArrayPositions := len(t[i].ArrayPositions)
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if len(t[j].ArrayPositions) < shortestArrayPositions {
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shortestArrayPositions = len(t[j].ArrayPositions)
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}
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// compare all the common array positions
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for api := 0; api < shortestArrayPositions; api++ {
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if t[i].ArrayPositions[api] < t[j].ArrayPositions[api] {
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return true
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}
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if t[i].ArrayPositions[api] > t[j].ArrayPositions[api] {
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return false
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}
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}
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// all the common array positions are the same
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if len(t[i].ArrayPositions) < len(t[j].ArrayPositions) {
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return true // j array positions, longer so greater
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} else if len(t[i].ArrayPositions) > len(t[j].ArrayPositions) {
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return false // j array positions, shorter so less
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}
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// array positions the same, compare starts
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return t[i].Start < t[j].Start
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}
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func (t TermLocations) MergeOverlapping() {
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var lastTl *TermLocation
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for i, tl := range t {
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if lastTl == nil && tl != nil {
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lastTl = tl
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} else if lastTl != nil && tl != nil {
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if lastTl.Overlaps(tl) {
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// ok merge this with previous
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lastTl.End = tl.End
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t[i] = nil
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}
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}
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}
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}
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func OrderTermLocations(tlm search.TermLocationMap) TermLocations {
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rv := make(TermLocations, 0)
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for term, locations := range tlm {
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for _, location := range locations {
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tl := TermLocation{
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Term: term,
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ArrayPositions: location.ArrayPositions,
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Pos: int(location.Pos),
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Start: int(location.Start),
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End: int(location.End),
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}
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rv = append(rv, &tl)
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}
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}
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sort.Sort(rv)
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return rv
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}
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