In a recent feature request, the intervals query was extended to support fuzzy rules.
I'm now trying to figure out why highlighting doesn't work with intervals/fuzzy whereas it does work with intervals/match and span_near/fuzzy.
Let's index a sample document:
POST test-index/_doc/1
{
"text": "The quick brown fox jumps over the lazy dog"
}
Using the span_near/fuzzy query, it works:
POST test-index/_search
{
"highlight": {
"number_of_fragments": 1,
"fragment_size": 100,
"fields": {
"text": {
"type": "unified"
}
}
},
"query": {
"span_near": {
"clauses": [
{
"span_multi": {
"match": {
"fuzzy": {
"text": {
"fuzziness": "AUTO",
"value": "quick"
}
}
}
}
},
{
"span_multi": {
"match": {
"fuzzy": {
"text": {
"fuzziness": "AUTO",
"value": "lazy"
}
}
}
}
}
],
"slop": 5,
"in_order": false
}
}
}
Response:
"hits" : [
{
"_index" : "test-index",
"_type" : "_doc",
"_id" : "1",
"_score" : 0.119415164,
"_source" : {
"text" : "The quick brown fox jumps over the lazy dog"
},
"highlight" : {
"text" : [
"The <em>quick</em> brown fox jumps over the <em>lazy</em> dog"
]
}
}
]
Using the intervals/match query, it also works:
POST test-index/_search
{
"highlight": {
"number_of_fragments": 1,
"fragment_size": 100,
"fields": {
"text": {
"type": "unified"
}
}
},
"query": {
"intervals": {
"text": {
"all_of": {
"ordered": false,
"max_gaps": 5,
"intervals": [
{
"match": {
"query": "quick"
}
},
{
"match": {
"query": "lazy"
}
}
]
}
}
}
}
}
Response:
"hits" : [
{
"_index" : "test-index",
"_type" : "_doc",
"_id" : "1",
"_score" : 0.14285713,
"_source" : {
"text" : "The quick brown fox jumps over the lazy dog"
},
"highlight" : {
"text" : [
"The <em>quick</em> brown fox jumps over the <em>lazy</em> dog"
]
}
}
]
Finally, we the intervals/fuzzy query, it doesn't work (i.e. no highlight section in the response):
POST test-index/_search
{
"highlight": {
"number_of_fragments": 1,
"fragment_size": 100,
"fields": {
"text": {
"type": "unified"
}
}
},
"query": {
"intervals": {
"text": {
"all_of": {
"ordered": false,
"max_gaps": 5,
"intervals": [
{
"fuzzy": {
"term": "quick"
}
},
{
"fuzzy": {
"term": "lazy"
}
}
]
}
}
}
}
}
Response:
"hits" : [
{
"_index" : "test-index",
"_type" : "_doc",
"_id" : "1",
"_score" : 0.14285713,
"_source" : {
"text" : "The quick brown fox jumps over the lazy dog"
}
}
]
Would anyone have any idea why? @jimczi maybe?
Thank you so much!