Using Elasticsearch to search special characters - elasticsearch

Question

How can I force Elasticsearch query_string to recognize '#' as a simple character?
Assuming I have an Index, and I added a few documents, by this statement:
POST test/item/_bulk
{"text": "john.doe#gmail.com"}
{"text": "john.doe#outlook.com"}
{"text": "john.doe#gmail.com, john.doe#outlook.com"}
{"text": "john.doe[at]gmail.com"}
{"text": "john.doe gmail.com"}
I want this search:
GET test/item/_search
{
"query":
{
"query_string":
{
"query": "*#gmail.com",
"analyze_wildcard": "true",
"allow_leading_wildcard": "true",
"default_operator": "AND"
}
}
}
to return only the first and third documents.
I tried 3 kinds of mapping:
First i tried -
PUT test
{
"settings": {
"analysis": {
"analyzer": {
"email_analyzer": {
"tokenizer": "email_tokenizer"
}
},
"tokenizer": {
"email_tokenizer": {
"type": "uax_url_email"
}
}
}
},
"mappings": {
"item": {
"properties": {
"text": {
"type": "string",
"analyzer": "email_analyzer"
}
}
}
}
}
than i tried -
PUT test
{
"settings": {
"analysis": {
"analyzer": {
"my_analyzer": {
"tokenizer": "my_tokenizer"
}
},
"tokenizer": {
"my_tokenizer": {
"type": "whitespace"
}
}
}
},
"mappings": {
"item": {
"properties": {
"text": {
"type": "string",
"analyzer": "my_analyzer"
}
}
}
}
}
and i also tried this one -
PUT test
{
"settings": {
"analysis": {
"analyzer": {
"my_analyzer": {
"tokenizer": "my_tokenizer"
}
},
"tokenizer": {
"my_tokenizer": {
"type": "whitespace"
}
}
}
},
"mappings": {
"item": {
"properties": {
"text": {
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
None of the above worked, actually they all returned all the documents.
Is there an analyzer/tokenizer/parameter that will make Elasticsearch to acknowledge the '#' sign like it does with any other character

Answer 1

This is working with your last setting, by putting the text to not analyze:
GET test/item/_search
{
"query":
{
"wildcard":
{
"text": "*#gmail.com*"
}
}
}
When using not analyzed field, you should use Term level query but not Full-Text level query: https://www.elastic.co/guide/en/elasticsearch/reference/2.3/term-level-queries.html