GroupAndMap - Transformations

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Transformations

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GroupAndMap

This operation is a Technical Preview and is available for testing purposes only. Do not use in production.

POST https://api.bentley.com/transformations/configurations/groupandmap

This endpoint is used to create the Group And Map configuration.

The Group And Map transformation enables the creation of new custom EC schemas and is capable of remapping already existing elements to the new EC classes with new EC properties. The custom schema is constructed using grouping and mapping data. It is your responsibility to create a valid mapping for the source iModel through the Reporting API before starting the transformation. To learn more about EC schemas and classes, please see Base Infrastructure Schemas.

These are the logical relations from grouping and mapping data to EC schema:

Mapping -> EC schema
Group -> EC class
GroupProperty -> EC property

After the transformation all elements that were selected with the group query will be remapped to the corresponding EC class. These elements will also have all the new EC properties inserted. The newly inserted EC properties' values will be populated with the help of 'ecProperties' field taken from the respective GroupProperty which you configured beforehand.

POST configuration specific properties explained:

mappingId - source iModel mapping id.
groupOverrides - list of overrides for each group.
    - groupId - id of mapping group.
    - baseClass - base EC class that will be applied for elements selected by group.
        - ecSchemaName - EC schema name.
        - ecClassName - EC class name.
additionalEcSchemas - list of additional EC schemas that will be added to target iModel.
    - ecSchemaName - EC schema name.
    - ecSchemaVersion - EC schema version.

In addition to exported data, the transformer will also push some additional metadata. This metadata contains:

BisCore:RepositoryLink and BisCore:ExternalSource elements that mark the source where the data was imported from.
A "Scope" BisCore:ExternalSourceAspect that contains Synchronization changeset metadata that is needed by the transformation service to process any later changes correctly.
Element provenance information (BisCore:ExternalSourceAspects) for elements that do not have federation guids.

Note: Creating a configuration does not run the transformation. To run the transformation, please see transformations reference.

Authentication

Requires Authorization header with valid Bearer token for scope itwin-platform.

For more documentation on authorization and how to get access token visit OAUTH2 Authorization page.

Authorization

You must have imodels_write assigned at the target project level and imodels_read assigned at the source project level within related configuration. If permissions at the project level are not configured, then you must have same assigned at the iModel level.

Alternatively, you must be an Organization Administrator for the Organization that owns a given project the iModel belongs to.

An Organization Administrator must have at least one of the following roles assigned in User Management: Account Administrator, Co-Administrator, or CONNECT Services Administrator. For more information about User Management see Bentley Communities Licensing, Cloud, and Web Services wiki page.

Rate limits

All iTwin Platform API operations have a rate limit. For more documentation on that visit Rate limits and quotas page.

Request

Request headers

Authorization

Yes

OAuth access token with itwin-platform scope

Yes

Setting to application/vnd.bentley.itwin-platform.v1+json is recommended.

Configuration data

Request body

Create group and map configuration

transformName

String

Yes

User friendly name of the transformation.

sourceProjectId

String

Yes

ProjectId of the source iModel.

sourceIModelId

String

Yes

ID of the source iModel.

targetProjectId

String

Yes

ProjectId of the target iModel.

targetIModelId

String

Yes

ID of the target iModel.

comment

String

Yes

Comment for the changeset created after transformation.

transformParameters

TParams_GroupAndMap

Yes

Group and map configuration transform parameters.

Example

json

{
    "transformName": "Example name",
    "sourceProjectId": "00000000-0000-0000-0000-000000000000",
    "sourceIModelId": "00000000-0000-0000-0000-000000000000",
    "targetProjectId": "00000000-0000-0000-0000-000000000000",
    "targetIModelId": "00000000-0000-0000-0000-000000000000",
    "comment": "Example comment",
    "transformParameters": {
        "mappingId": "00000000-0000-0000-0000-000000000000",
        "groupOverrides": [{
            "groupId": "00000000-0000-0000-0000-000000000000",
            "baseClass": {
                "ecSchemaName": "BisCore",
                "ecClassName": "PhysicalElement"
            }
        }],
        "additionalEcSchemas": [{
            "ecSchemaName": "BisCore",
            "ecSchemaVersion": "01.00.00"
        }]
    }
}

Response

Response 201 Created

Returns the created configuration.

json

{
    "configuration": {
        "id": "00000000-0000-0000-0000-000000000000",
        "transformName": "Transformation name",
        "comment": "comment",
        "createdDateTime": "2022-05-20T14:51:33.6133333Z",
        "modifiedDateTime": "2022-05-20T14:52:33.6133333Z",
        "transformType": "GroupAndMap",
        "transformParameters": {
            "_links": {
                "mapping": {
                    "href": "https://api.bentley.com/insights/reporting/datasources/imodels/00000000-0000-0000-0000-000000000000/mappings/00000000-0000-0000-0000-000000000000"
                }
            },
            "groupOverrides": [{
                "_links": {
                    "group": {
                        "href": "https://api.bentley.com/insights/reporting/datasources/imodels/00000000-0000-0000-0000-000000000000/mappings/00000000-0000-0000-0000-000000000000/groups/00000000-0000-0000-0000-000000000000"
                    }
                },
                "baseClass": {
                    "ecSchemaName": "BisCore",
                    "ecClassName": "GraphicalElement3d"
                }
            }]
        },
        "_links": {
            "sourceIModel": {
                "href": "https://api.bentley.com/imodels/00000000-0000-0000-0000-000000000000"
            },
            "targetIModel": {
                "href": "https://api.bentley.com/imodels/00000000-0000-0000-0000-000000000000"
            },
            "sourceProject": {
                "href": "https://api.bentley.com/itwins/00000000-0000-0000-0000-000000000000"
            },
            "targetProject": {
                "href": "https://api.bentley.com/itwins/00000000-0000-0000-0000-000000000000"
            }
        }
    }
}

Response 401 Unauthorized

This response indicates that request lacks valid authentication credentials. Access token might not been provided, issued by the wrong issuer, does not have required scopes or request headers were malformed.

json

{
    "error": {
        "code": "HeaderNotFound",
        "message": "Header Authorization was not found in the request. Access denied."
    }
}

Response 403 Forbidden

The user has insufficient permissions for the requested operation.

json

{
    "error": {
        "code": "InsufficientPermissions",
        "message": "The user has insufficient permissions for the requested operation."
    }
}

Response 404 Not Found

This response indicates that the provided Project or iModel could not be found.

json

{
    "error": {
        "code": "IModelNotFound",
        "message": "Requested IModel is not available."
    }
}

Response 422 Unprocessable Entity

Given data is invalid.

json

{
    "error": {
        "code": "MissingRequestBody",
        "message": "Request body was not provided."
    }
}

Response 429 Too many requests

This response indicates that the user has sent too many requests in a given amount of time.

json

{
    "error": {
        "code": "TooManyRequests",
        "message": "More requests were received than the subscription rate-limit allows."
    }
}

Response headers

retry-after

The number of requests exceeds the rate-limit for the client subscription.

Definitions

Create group and map configuration

Data needed to create group and map configuration.

TableSchema

transformName

String

User friendly name of the transformation.

sourceProjectId

String

ProjectId of the source iModel.

sourceIModelId

String

ID of the source iModel.

targetProjectId

String

ProjectId of the target iModel.

targetIModelId

String

ID of the target iModel.

comment

String

Comment for the changeset created after transformation.

transformParameters

TParams_GroupAndMap

Group and map configuration transform parameters.

Group and map configuration

TableSchema

configuration

Configuration_GroupAndMap

Group and map configuration object.

Group and map configuration properties

Configuration data.

TableSchema

String

ID of the configuration.

transformName

String

User friendly name of the transformation.

comment

String

Comment for the changeset created after transformation.

createdDateTime

Date-time

Time the configuration was created at.

modifiedDateTime

Date-time

Time the configuration was last modified at.

transformType

String

Type of the transformation.

transformParameters

TParams_GroupAndMap_Returned

Group and map configuration transform parameters.

_links

Links_ConfigurationData

Links to a configuration data.

Group and map created configuration transformation parameters

TableSchema

_links

TParams_GroupAndMap_Mapping

Link to a mapping.

groupOverrides

TParams_GroupAndMap_GroupOverride_Returned[]

Array of a group override object.

additionalEcSchemas

TParams_Common_ECSchemaDefinition[]

Array of EC schemas that will be added to target iModel after transformation.

Link to a mapping

TableSchema

mapping

Link

Link to a mapping.

Link to a group

TableSchema

group

Link

Link to a group.

Links

TableSchema

sourceIModel

Link

Link to a source iModel.

targetIModel

Link

Link to a target iModel.

sourceProject

Link

Link to a source project.

targetProject

Link

Link to a target project.

Link

TableSchema

href

String

Link to a resource.

EC class definition

TableSchema

ecSchemaName

String

EC Schema name

ecClassName

String

EC Class name

EC schema definition

TableSchema

ecSchemaName

String

EC Schema name

ecSchemaVersion

String

EC Schema version

Group and map transformation properties

TableSchema

mappingId

String

Mapping id of the iModel.

groupOverrides

TParams_GroupAndMap_GroupOverride[]

Array of a group overrides.

additionalEcSchemas

TParams_Common_ECSchemaDefinition[]

Array of EC schemas that will be added to target iModel after transformation.

Group override properties

TableSchema

groupId

String

Group id of the iModel Mapping.

baseClass

TParams_Common_ECClassDefinition

Descriptor of an EC base class.

Returned group override properties

TableSchema

_links

TParams_GroupAndMap_Group

Link to a group.

baseClass

TParams_Common_ECClassDefinition

Base class object.

DetailedError

Contains error information and an array of more specific errors.

TableSchema

code

String

One of a server-defined set of error codes.

message

String

A human-readable representation of the error.

target

String

The target of the error.

details

Error[]

Optional array of more specific errors.

Detailed Error Response

Gives details for an error that occurred while handling the request. Note that clients MUST NOT assume that every failed request will produce an object of this schema, or that all of the properties in the response will be non-null, as the error may have prevented this response from being constructed.

TableSchema

error

DetailedError

Error Detailed information.

Error

Contains error information.

TableSchema

code

String

One of a server-defined set of error codes.

message

String

A human-readable representation of the error.

target

String

The target of the error.

Error Response

TableSchema

error

Error

Error information.