Can anyone explain the mapping of plone.richtext behavior?

[1letter]

I have setup the opensearch container with the ingest plugin. i have setup collective.elastic.ingest in a python venv locally.
I have setup a simple Plone 6.1 site, no multilingual, language german, no content, collective.elastic.plone is installed. the communication between the instances works.

I use the mappings.json file from the example docker-os directory in this package.

I add a Page with:

• title: Himbeere
• description: Birne
• richtext: Apfel

I add a PDF File with:

• title: Rot
• description: Gelb
• the PDF contains only one word: Grün

Now i use a Rest Client for better debugging and send a request to http://localhost:9200/plone/_search

{
  "_source": true,
  "query": {
    "multi_match": {
      "query": "the word i search",
      "fields": [
        "title*^1.9",
        "description*^1.5",
        "file__extracted.content",
        "text__extracted.content"
      ],
      "analyzer": "german",
      "operator": "or",
      "fuzziness": "AUTO",
      "prefix_length": 2,
      "type": "most_fields",
      "minimum_should_match": "80%"
    }
  }
}

My search tests:

• Rot
• Gelb
• Grün
• Himbeere
• Birne
• Apfel -> no hits

I investigate the query with term "Himbeere" (that is the plone page) i see the term "Apfel", but not as plain text, the HTML is inside the field text__extracted.content

{
  "took": 9,
  "timed_out": false,
  "_shards": {
    "total": 1,
    "successful": 1,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": {
      "value": 1,
      "relation": "eq"
    },
    "max_score": 2.491389,
    "hits": [
      {
        "_source": {          
          "text__extracted": {
            "content_type": "text/plain; charset=ISO-8859-1",
            "language": "mt",
            "content": "<p>Apfel</p>",
            "content_length": 13
          },
          "text": {
            "data": "<p>Apfel</p>",
            "content-type": "text/html",
            "encoding": "utf-8"
          },          
        }
      }
    ]
  }
}

I investigate the query with term "grün" (that is the pdf file in my plone site) i see the term "grün" in the field file__extracted.content

{
  "took": 6,
  "timed_out": false,
  "_shards": {
    "total": 1,
    "successful": 1,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": {
      "value": 1,
      "relation": "eq"
    },
    "max_score": 0.6019437,
    "hits": [
      {
        "_source": {          
          "file__extracted": {
            "content_type": "text/plain; charset=UTF-8",
            "language": "de",
            "content": "Grün",
            "content_length": 6
          },
          "file": {
            "download": "http://carusnet.local/farben.pdf/@@download/file",
            "filename": "farben.pdf",
            "size": 6,
            "content-type": "application/pdf"
          },
        }
      }
    ]
  }
}

Two Problems:

• the term in the richtext field is not found
• shouldn't the HTML code strip in the ‘text__extracted.content’ field be removed? Perhaps this solve the first problem?

Any hints @jensens or @ksuess ?

[jensens]

Indeed, text__extracted should not contain any markup. The Opensearch ingest-attachment plugin (installed in the https://github.com/collective/collective.elastic.ingest/blob/main/examples/docker-os/Dockerfile) should extract it from HTML to text/plain (it claims it is text/plain, but it is not). I guess this is the source of the problem. I have no good clue at the moment what actually went wrong here. I never run into the problem myself.

[1letter]

I found a working solution:

the mappings.json need a new processor for html_strip in the pipeline for plone.app.textfield.RichText definition and a new target field for the result:

"processors": [
    {
        "attachment": {
            "field": "{source}",
            "target_field": "{target}",
            "ignore_missing": true
        }
    },
    {
        "html_strip": {
            "field": "{target}.content",
            "target_field": "stripped_text"
        }
    },
    {
        "remove": {
            "field": "{source}",
            "ignore_missing": true
        }
    }
]

the search query:

{
  "_source": true,
  "query": {
    "multi_match": {
      "query": "Obst",
      "fields": [
        "title*^1.9",
        "description*^1.5",
        "stripped_text*^1.1",
        "file__extracted.content"
      ],
      "analyzer": "german",
      "operator": "or",
      "fuzziness": "AUTO",
      "prefix_length": 2,
      "type": "most_fields",
      "minimum_should_match": "30%"
    }
  }
}

[jensens]

Interesting! May you provide a PR for this?

[1letter]

Yes i can, but it i think more investigation is needed. My search result have this structure:

{
  "took": 9,
  "timed_out": false,
  "_shards": {
    "total": 1,
    "successful": 1,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": {
      "value": 1,
      "relation": "eq"
    },
    "max_score": 0.12654667,
    "hits": [
      {
        "_index": "plone",
        "_id": "314ffcf4deb642a3bb39396ff7eaded0",
        "_score": 0.12654667,
        "_source": {
          "stripped_text": "\nKirsche Apfel und noch mehr Obst. Aber kein Gemüse! Auto, Benz und Fahrrad\n",
          "creators": [
            "admin"
          ],
          "description": "Banane",
          "language": "de",
          "section": "suchseite",
          "title": "Himbeere3",
          "rid": -1235753158,
          "portal_type": "Document",
          "text__extracted": {
            "content_type": "text/plain; charset=UTF-8",
            "language": "de",
            "content": "<p>Kirsche <strong>Apfel</strong> und noch mehr Obst. Aber kein <strong>Gemüse</strong>! Auto, Benz und Fahrrad</p>",
            "content_length": 116
          },
          "effective": "2025-01-14T13:17:00",
          "allow_discussion": false,
          "modified": "2025-01-15T13:50:07+00:00",
          "@id": "http://carusnet.local/suchseite",
          "id": "suchseite",
          "text": {
            "data": "<p>Kirsche <strong>Apfel</strong> und noch mehr Obst. Aber kein <strong>Gemüse</strong>! Auto, Benz und Fahrrad</p>",
            "content-type": "text/html",
            "encoding": "utf-8"
          },
          "created": "2025-01-14T12:17:48+00:00",
          "review_state": "published",
          "is_folderish": false,
          "layout": "document_view",
          "UID": "314ffcf4deb642a3bb39396ff7eaded0",
          "type_title": "Seite",
          "allowedRolesAndUsers": [
            "Anonymous"
          ],
          "exclude_from_nav": false
        }
      }
    ]
  }
}

If i search the term Gemüse, no hits are provided. That's a little bit wired. Perhaps the umlaut is not correct or a missing analyzer file for german. I will do more tests before i will make an PR

But "file__extracted.content*" or "text__extracted.content*" is definitly wrong, but this should be corrected in collective.elastic.plone