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Spanish analyzer
The built-in spanish analyzer can be applied to a text field using the following command:
PUT /spanish-index
{
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "spanish"
}
}
}
}
Stem exclusion
You can use stem_exclusion with this language analyzer using the following command:
PUT index_with_stem_exclusion_spanish_analyzer
{
"settings": {
"analysis": {
"analyzer": {
"stem_exclusion_spanish_analyzer": {
"type": "spanish",
"stem_exclusion": ["autoridad", "aprobación"]
}
}
}
}
}
Spanish analyzer internals
The spanish analyzer is built using the following components:
-
Tokenizer:
standard -
Token filters:
- lowercase
- stop (Spanish)
- keyword
- stemmer (Spanish)
Custom Spanish analyzer
You can create a custom Spanish analyzer using the following command:
PUT /spanish-index
{
"settings": {
"analysis": {
"filter": {
"spanish_stop": {
"type": "stop",
"stopwords": "_spanish_"
},
"spanish_stemmer": {
"type": "stemmer",
"language": "light_spanish"
},
"spanish_keywords": {
"type": "keyword_marker",
"keywords": []
}
},
"analyzer": {
"spanish_analyzer": {
"type": "custom",
"tokenizer": "standard",
"filter": [
"lowercase",
"spanish_stop",
"spanish_keywords",
"spanish_stemmer"
]
}
}
}
},
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "spanish_analyzer"
}
}
}
}
Generated tokens
Use the following request to examine the tokens generated using the analyzer:
POST /spanish-index/_analyze
{
"field": "content",
"text": "Los estudiantes estudian en universidades españolas. Sus números son 123456."
}
The response contains the generated tokens:
{
"tokens": [
{
"token": "estudiant",
"start_offset": 4,
"end_offset": 15,
"type": "<ALPHANUM>",
"position": 1
},
{
"token": "estudian",
"start_offset": 16,
"end_offset": 24,
"type": "<ALPHANUM>",
"position": 2
},
{
"token": "universidad",
"start_offset": 28,
"end_offset": 41,
"type": "<ALPHANUM>",
"position": 4
},
{
"token": "español",
"start_offset": 42,
"end_offset": 51,
"type": "<ALPHANUM>",
"position": 5
},
{
"token": "numer",
"start_offset": 57,
"end_offset": 64,
"type": "<ALPHANUM>",
"position": 7
},
{
"token": "123456",
"start_offset": 69,
"end_offset": 75,
"type": "<NUM>",
"position": 9
}
]
}