Method: projects.locations.catalogs.completeQuery

Completes the specified prefix with keyword suggestions.

This feature is only available for users who have Retail Search enabled. Enable Retail Search on Cloud Console before using this feature.

HTTP request

GET https://retail.googleapis.com/v2alpha/{catalog=projects/*/locations/*/catalogs/*}:completeQuery

The URL uses gRPC Transcoding syntax.

Path parameters

Parameters
catalog

string

Required. Catalog for which the completion is performed.

Full resource name of catalog, such as projects/*/locations/global/catalogs/default_catalog.

Query parameters

Parameters
query

string

Required. The query used to generate suggestions.

The maximum number of allowed characters is 255.
visitorId

string

Required field. A unique identifier for tracking visitors. For example, this could be implemented with an HTTP cookie, which should be able to uniquely identify a visitor on a single device. This unique identifier should not change if the visitor logs in or out of the website.

The field must be a UTF-8 encoded string with a length limit of 128 characters. Otherwise, an INVALID_ARGUMENT error is returned.
languageCodes[]

string

Note that this field applies for user-data dataset only. For requests with cloud-retail dataset, setting this field has no effect.

The language filters applied to the output suggestions. If set, it should contain the language of the query. If not set, suggestions are returned without considering language restrictions. This is the BCP-47 language code, such as "en-US" or "sr-Latn". For more information, see Tags for Identifying Languages. The maximum number of language codes is 3.
deviceType

string

The device type context for completion suggestions. We recommend that you leave this field empty.

It can apply different suggestions on different device types, e.g. DESKTOP, MOBILE. If it is empty, the suggestions are across all device types.

Supported formats:

  • UNKNOWN_DEVICE_TYPE

  • DESKTOP

  • MOBILE

  • A customized string starts with OTHER_, e.g. OTHER_IPHONE.
dataset

string

Determines which dataset to use for fetching completion. "user-data" will use the imported dataset through CompletionService.ImportCompletionData. "cloud-retail" will use the dataset generated by cloud retail based on user events. If leave empty, it will use the "user-data".

Current supported values:

  • user-data

  • cloud-retail: This option requires enabling auto-learning function first. See guidelines.
maxSuggestions

integer

Completion max suggestions. If left unset or set to 0, then will fallback to the configured value CompletionConfig.max_suggestions.

The maximum allowed max suggestions is 20. If it is set higher, it will be capped by 20.
enableAttributeSuggestions

boolean

If true, attribute suggestions are enabled and provided in the response.

This field is only available for the "cloud-retail" dataset.
entity

string

The entity for customers who run multiple entities, domains, sites, or regions, for example, Google US, Google Ads, Waymo, google.com, youtube.com, etc. If this is set, it must be an exact match with UserEvent.entity to get per-entity autocomplete results.

Request body

The request body must be empty.

Response body

Response of the autocomplete query.

If successful, the response body contains data with the following structure:

JSON representation 
{
  "completionResults": [
    {
      object (CompletionResult)
    }
  ],
  "attributionToken": string,
  "recentSearchResults": [
    {
      object (RecentSearchResult)
    }
  ],
  "attributeResults": {
    string: {
      object (AttributeResult)
    },
    ...
  }
}
Fields
completionResults[]

object (CompletionResult)

Results of the matching suggestions. The result list is ordered and the first result is top suggestion.
attributionToken

string

A unique complete token. This should be included in the UserEvent.completion_detail for search events resulting from this completion, which enables accurate attribution of complete model performance.
recentSearchResults[]
(deprecated)

object (RecentSearchResult)

Deprecated. Matched recent searches of this user. The maximum number of recent searches is 10. This field is a restricted feature. If you want to enable it, contact Retail Search support.

This feature is only available when CompleteQueryRequest.visitor_id field is set and UserEvent is imported. The recent searches satisfy the follow rules:

  • They are ordered from latest to oldest.

  • They are matched with CompleteQueryRequest.query case insensitively.

  • They are transformed to lower case.

  • They are UTF-8 safe.

Recent searches are deduplicated. More recent searches will be reserved when duplication happens.
attributeResults

map (key: string, value: object (AttributeResult))

A map of matched attribute suggestions. This field is only available for "cloud-retail" dataset.

Current supported keys:

  • brands

  • categories

Authorization scopes

Requires the following OAuth scope:

  • https://www.googleapis.com/auth/cloud-platform

For more information, see the Authentication Overview.

IAM Permissions

Requires the following IAM permission on the catalog resource:

  • retail.catalogs.completeQuery

For more information, see the IAM documentation.

CompletionResult

Resource that represents completion results.

JSON representation 
{
  "suggestion": string,
  "attributes": {
    string: {
      "text": [
        string
      ],
      "numbers": [
        number
      ],
      "searchable": boolean,
      "indexable": boolean
    },
    ...
  },
  "facets": [
    {
      object (Facet)
    }
  ],
  "totalProductCount": integer
}
Fields
suggestion

string

The suggestion for the query.
attributes

map (key: string, value: object)

Custom attributes for the suggestion term.

  • For "user-data", the attributes are additional custom attributes ingested through BigQuery.

  • For "cloud-retail", the attributes are product attributes generated by Cloud Retail. It requires UserEvent.product_details is imported properly.
attributes.text[]

string

The textual values of this custom attribute. For example, ["yellow", "green"] when the key is "color".

Empty string is not allowed. Otherwise, an INVALID_ARGUMENT error is returned.

Exactly one of text or numbers should be set. Otherwise, an INVALID_ARGUMENT error is returned.
attributes.numbers[]

number

The numerical values of this custom attribute. For example, [2.3, 15.4] when the key is "lengths_cm".

Exactly one of text or numbers should be set. Otherwise, an INVALID_ARGUMENT error is returned.
attributes.searchable
(deprecated)

boolean

This field is normally ignored unless AttributesConfig.attribute_config_level of the Catalog is set to the deprecated 'PRODUCT_LEVEL_ATTRIBUTE_CONFIG' mode. For information about product-level attribute configuration, see Configuration modes. If true, custom attribute values are searchable by text queries in SearchService.Search.

This field is ignored in a UserEvent.

Only set if type text is set. Otherwise, a INVALID_ARGUMENT error is returned.
attributes.indexable
(deprecated)

boolean

This field is normally ignored unless AttributesConfig.attribute_config_level of the Catalog is set to the deprecated 'PRODUCT_LEVEL_ATTRIBUTE_CONFIG' mode. For information about product-level attribute configuration, see Configuration modes. If true, custom attribute values are indexed, so that they can be filtered, faceted or boosted in SearchService.Search.

This field is ignored in a UserEvent.

See SearchRequest.filter, SearchRequest.facet_specs and SearchRequest.boost_spec for more details.
facets[]

object (Facet)

Facet information for the suggestion term. Gives the number of items resulting from a search with this suggestion term for each facet.

This is an experimental feature for limited customers. If you want to receive this facet information, reach out to the Retail support team.
totalProductCount

integer

Total number of products associated with a search with this suggestion.

This is an experimental feature for limited customers. If you want to receive this product count information, reach out to the Retail support team.

RecentSearchResult

Deprecated: Recent search of this user.

JSON representation 
{
  "recentSearch": string
}
Fields

AttributeResult

Resource that represents attribute results. The list of suggestions for the attribute.

JSON representation 
{
  "suggestions": [
    string
  ]
}
Fields
suggestions[]

string