I cannot search the file name from path in Elasticsearch

Elastic Stack Elasticsearch
1

I want to search filename from a path in Elasticsearch, but I cannot do it.

I have documents consisting of "name" fields with paths.
Example:
Name
"folder/folder1/test/folder2/folder/"
"folder/folder1/test/folder2/folder/test.png"

When I search for "test" here, everything under the "folder/folder1/test/" folder comes up. Likewise, when I search for "es", everything under "folder/folder1/test/" comes up. I need to be able to search in the subdirectory. For example, the expression "es" appears in "test.png".

The methods I tried are tokenizer, path hierarchy, path hierarchy reversed.

My index is like this

"name": {
						"type": "text",
						"fields": {
							"keyword": {
								"type": "keyword",
								"ignore_above": 256
							},
							"tokenizer": {
								"type": "text",
								"analyzer": "my_analyzer"
							},
							"tree": {
								"type": "text",
								"analyzer": "custom_path_tree"
							},
							"tree_reversed": {
								"type": "text",
								"analyzer": "custom_path_tree_reversed"
							}
						}
					}

Analyzers are like this:

"analyzer": {
						"custom_path_tree_reversed": {
							"tokenizer": "custom_hierarchy_reversed"
						},
						"autocomplete": {
							"filter": [
								"lowercase",
								"autocomplete_filter"
							],
							"type": "custom",
							"tokenizer": "standard"
						},
						"custom_path_tree": {
							"tokenizer": "custom_hierarchy"
						},
						"my_analyzer": {
							"tokenizer": "my_tokenizer"
						}
					},
					"tokenizer": {
						"custom_hierarchy": {
							"type": "path_hierarchy",
							"delimiter": "/"
						},
						"my_tokenizer": {
							"type": "standard",
							"max_token_length": "30"
						},
						"custom_hierarchy_reversed": {
							"reverse": "true",
							"type": "path_hierarchy",
							"delimiter": "/"
						}
					}
2

update

3

I don't see any update in your post.

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1 Like
4 
{
	"settings": {
		"analysis": {
			"filter": {
				"my_filter": {
					"type": "pattern_capture",
					"preserve_original": false,
					"patterns": [
						"[^/]+(?=/$|$)"
					]
				}
			},
			"analyzer": {
				"my_analyzer": {
					"tokenizer": "pattern",
					"filter": [
						"my_filter",
						"lowercase",
						"unique"
					]
				}
			}
		}
	},
	"mappings": {
		"properties": {
			"key": {
				"type": "text",
				"analyzer": "my_analyzer",
				"search_analyzer":"my_analyzer"
			}
		}
	}
}

Thank you Mr David for your response.

By the way, I also used an analyzer with regex filtering in this way, but I think I will try pattern replacement as a last resort, I am still open to suggestions.

5

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