RelevanceEngineeringCase "Make CamelCase HasEntityTitle flexibly findable"

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Indexing { "mappings": { "properties": { "HasEntityTitle": { "type": "text", "analyzer": "standard", "search_analyzer": "standard", "fields": { "TOKCamelCaseFILLowerCase": { "type": "", "analyzer": "TOKCamelCaseFILLowerCase", "search_analyzer": "TOKCamelCaseFILLowerCase", } } } } } }, "settings": { "index": { "analysis": { "analyzer": { "TOKCamelCaseFILLowerCase": { "type": "custom", "filter": [ "lowercase" ], "tokenizer": "TOKCamelCase" } }, "tokenizer": { "TOKCamelCase": { "pattern": """([^\p{L}\d]+)|(?<=\D)(?=\d)|(?<=\d)(?=\D)|(?<=[\p{L}&&[^\p{Lu}]])(?=\p{Lu})|(?<=\p{Lu})(?=\p{Lu}[\p{L}&&[^\p{Lu}]])""", "type": "pattern" } }, "filter": { } } } } }

Querying "query": { "query_string": { "query": "<queryString>", "fields": [ "HasEntityTitle", "TOKCamelCaseFILLowerCase" } } } }