Slot: expression_to_value_mappings
A mapping table in which the keys are boolean expressions and the values are literal results. On enum derivations, used for scalar binning: each key is evaluated with value() bound to the incoming value, and the first truthy key's value is returned as the target permissible value. See issue #99.
URI: [linkmlmap:slot/expression_to_value_mappings](https://w3id.org/linkml/transformer/slot/expression_to_value_mappings)
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [ElementDerivation](../classes/ElementDerivation.md) | An abstract grouping for classes that provide a specification of how to deriv... | no |
| [ClassDerivation](../classes/ClassDerivation.md) | A specification of how to derive a target class from a source class | no |
| [ObjectDerivation](../classes/ObjectDerivation.md) | Deprecated | no |
| [SlotDerivation](../classes/SlotDerivation.md) | A specification of how to derive the value of a target slot from a source slo... | no |
| [EnumDerivation](../classes/EnumDerivation.md) | A specification of how to derive the value of a target enum from a source enu... | no |
| [PermissibleValueDerivation](../classes/PermissibleValueDerivation.md) | A specification of how to derive the value of a PV from a source enum | no |
| [PrefixDerivation](../classes/PrefixDerivation.md) | A specification of how to derive a target prefix declaration | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [KeyVal](../classes/KeyVal.md) |
| Domain Of | [ElementDerivation](../classes/ElementDerivation.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
| Multivalued | Yes |
### Slot Characteristics
| Property | Value |
| --- | --- |
| Owner | [ElementDerivation](../classes/ElementDerivation.md) |
## Identifier and Mapping Information
### Schema Source
* from schema: https://w3id.org/linkml/transformer
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | linkmlmap:expression_to_value_mappings |
| native | linkmlmap:expression_to_value_mappings |
## LinkML Source
name: expression_to_value_mappings
description: 'A mapping table in which the keys are boolean expressions and the values
are literal results. On enum derivations, used for scalar binning: each key is evaluated
with value() bound to the incoming value, and the first truthy key''s value is returned
as the target permissible value. See issue #99.'
from_schema: https://w3id.org/linkml/transformer
rank: 1000
owner: ElementDerivation
domain_of:
- ElementDerivation
range: KeyVal
multivalued: true
inlined: true