Unexpected JSON event 'VALUE_FALSE' from get component template endpoint when mapping includes "subobjects": false

[tswetland]

Java API client version

8.19.3

Java version

17

Elasticsearch Version

8.19.3

Problem description

Getting an error when attempting to retrieve component templates from elasticsearch where the component template includes a "subobjects": false mapping. Error is:

Error deserializing co.elastic.clients.elasticsearch._types.mapping.ObjectProperty: co.elastic.clients.json.UnexpectedJsonEventException: Unexpected JSON event 'VALUE_FALSE' instead of '[KEY_NAME, VALUE_STRING]' (JSON path: component_templates[0].component_template.template.mappings.properties.doc.subobjects)

This seems to be the same issue for subobjects as previously occurred for Refresh and DynamicMapping (see: #139 and #275).

To reproduce:

String templates = """
{
  "component_templates": [
    {
	  "name": "test-template",
	  "component_template": {
	    "template": {
		  "mappings": {
		    "properties": {
			  "document": {
			    "subobjects": false,
				"properties": {
				  "body.size": {
				    "type": "integer"
				  }
				}
			  }
			}
		  }
		}
	  }
	}
  ]
}
"""

new GetComponentTemplateResponse.Builder().withJson(new StringReader(templates));

[l-trotta]

Hello, thanks for reporting this! The situation here is a bit different from the old linked issues: Subobjects can accept both "true" and "false" in String or boolean form, but also "auto", which is only a String. Currently Subobjects in the java client is defined as an enum of string, so it fails to deserialize booleans. I'll have to check what can be done here, I'll update soon!