Galician analyzer
The built-in galician analyzer can be applied to a text field using the following command:
PUT /galician-index
{
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "galician"
}
}
}
}
Stem exclusion
You can use stem_exclusion with this language analyzer using the following command:
PUT index_with_stem_exclusion_galician_analyzer
{
"settings": {
"analysis": {
"analyzer": {
"stem_exclusion_galician_analyzer": {
"type": "galician",
"stem_exclusion": ["autoridade", "aceptación"]
}
}
}
}
}
Galician analyzer internals
The galician analyzer is built using the following components:
-
Tokenizer:
standard -
Token filters:
- lowercase
- stop (French)
- keyword
- stemmer (French)
Custom Galician analyzer
You can create a custom Galician analyzer using the following command:
PUT /galician-index
{
"settings": {
"analysis": {
"filter": {
"galician_stop": {
"type": "stop",
"stopwords": "_galician_"
},
"galician_stemmer": {
"type": "stemmer",
"language": "galician"
},
"galician_keywords": {
"type": "keyword_marker",
"keywords": []
}
},
"analyzer": {
"galician_analyzer": {
"type": "custom",
"tokenizer": "standard",
"filter": [
"lowercase",
"galician_stop",
"galician_keywords",
"galician_stemmer"
]
}
}
}
},
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "galician_analyzer"
}
}
}
}
Generated tokens
Use the following request to examine the tokens generated using the analyzer:
POST /galician-index/_analyze
{
"field": "content",
"text": "Os estudantes estudan en Santiago e nas universidades galegas. Os seus números son 123456."
}
The response contains the generated tokens:
{
"tokens": [
{"token": "estud","start_offset": 3,"end_offset": 13,"type": "<ALPHANUM>","position": 1},
{"token": "estud","start_offset": 14,"end_offset": 21,"type": "<ALPHANUM>","position": 2},
{"token": "santiag","start_offset": 25,"end_offset": 33,"type": "<ALPHANUM>","position": 4},
{"token": "univers","start_offset": 40,"end_offset": 53,"type": "<ALPHANUM>","position": 7},
{"token": "galeg","start_offset": 54,"end_offset": 61,"type": "<ALPHANUM>","position": 8},
{"token": "numer","start_offset": 71,"end_offset": 78,"type": "<ALPHANUM>","position": 11},
{"token": "son","start_offset": 79,"end_offset": 82,"type": "<ALPHANUM>","position": 12},
{"token": "123456","start_offset": 83,"end_offset": 89,"type": "<NUM>","position": 13}
]
}