Put Search Application | Elasticsearch Guide

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Put Search Applicationedit

This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.

Creates or updates a Search Application.

Requestedit

PUT _application/search_application/<name>

Prerequisitesedit

Requires the manage_search_application cluster privilege. Also requires manage privileges on all indices that are added to the Search Application.

Path parametersedit

create

(Optional, Boolean) If true, this request cannot replace or update existing Search Applications. Defaults to false.

<body>

(Required, object) Contains parameters for a search application:

Properties of <body> objects

indices

(Required, array of strings) The indices associated with this search application. All indices need to exist in order to be added to a search application.

template

(Optional, object) The search template associated with this search application. The search application’s template is only stored and accessible through the search application.

This search template must be a Mustache template.
The template must contain a Mustache script and script source.
The template may be modified with subsequent put search application requests.
If no template is specified when creating a search application, or if a template is removed from a search application, we use the query_string defined in the template examples as a default.
This template will be used by the search application search API to execute searches.
The template accepts an optional dictionary parameter which defines a JSON schema used for validating parameters sent to the search application search API.

Properties of <template>

script: (Required, object) The associated mustache template.
dictionary: (Optional, object) The dictionary used to validate the parameters used with the search application search API. The dictionary must be a valid JSON schema. If dictionary is not specified, then the parameters will not be validated before being applied in the template.

Response codesedit

404: Search Application <name> does not exist.
409: Search Application <name> exists and create is true.

Examplesedit

The following example creates or updates a new Search Application called my-app:

PUT _application/search_application/my-app
{
  "indices": [ "index1", "index2" ],
  "template": {
    "script": {
      "source": {
        "query": {
          "query_string": {
            "query": "{{query_string}}",
            "default_field": "{{default_field}}"
          }
        }
      },
      "params": {
        "query_string": "*",
        "default_field": "*"
      }
    },
    "dictionary": {
      "properties": {
        "query_string": {
          "type": "string"
        },
        "default_field": {
          "type": "string",
          "enum": [
            "title",
            "description"
          ]
        },
        "additionalProperties": false
      },
      "required": [
        "query_string"
      ]
    }
  }
}

When the above dictionary parameter is specified, the search application search API will perform the following parameter validation:

It accepts only the query_string and default_field parameters
It verifies that query_string and default_field are both strings
It accepts default_field only if it takes the values title or description

If the parameters are not valid, the the search application search API will return an error.

POST _application/search_application/my-app/_search
{
  "params": {
    "default_field": "author",
    "query_string": "Jane"
  }
}

In the above example, the value of the default_field parameter is not valid, therefore Elasticsearch will return an error:

{
  "error": {
    "root_cause": [
      {
        "type": "validation_exception",
        "reason": 'Validation Failed: 1: $.default_field: does not have a value in the enumeration [title, description];',
        "stack_trace": ...
      }
    ],
    "type": "validation_exception",
    "reason": 'Validation Failed: 1: $.default_field: does not have a value in the enumeration [title, description];',
    "stack_trace": ...
  },
  "status": 400
}

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