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Connectors
This documentation describes the connectors and how they are used.
Connector properties
Connector properties allow you to configure a connector.
Property enablement
Property enablement expressions determine whether the property is displayed, based on the value of other properties.

Connectors
This documentation describes the connectors and how they are used.
- Introduction to the connector wizard
  The Link connector wizard provides an easy way to create REST-based adapters, or connectors, within the user interface, without having to write code or use additional tooling.
- Service based adapters
  Service based adapters are created by referencing a service definition that defines REST endpoints. Endpoints defined in the service become operations of the adapter, and the parameters of the service and its endpoints become the properties of the adapter.
- Flow based connectors
  Flow based connectors are created by referencing a project that contains Link flows.
- Flow and service based connectors
  Connectors that use both flows and services are created by referencing a project that contains Link flows, and a service defiition that defines REST endpoints.
- Hand coded adapters
  Link adapters can be implemented in Java or C/C++. The connector wizard can be used to create the adapter descriptor that is required to expose the properties and operation of the adapter to Link.
- Connector wizard functionality
  The connector wizard provides capabilities from the connectors page of the user interface.
- Connector properties
  Connector properties allow you to configure a connector.
  - Property attributes
    The attributes of properties are defined in this documentation.
  - Property values
    A fixed set of values can be specified for a property. Each value has a label and a value.
  - Property enablement
    Property enablement expressions determine whether the property is displayed, based on the value of other properties.
- Operations
  Operations provide a convenient way for you to set the properties of a connector. Selecting an operation automatically configures one or more properties to simplify your experience.
- Schema mapping
  Certain applications that use Link require that connectors define a schema mapping.

Property enablement

Property enablement expressions determine whether the property is displayed, based on the value of other properties.

When the value of a property is changed in the user interface, the enablement expressions are evaluated. If the enablement expressions evaluate to true, then the property is displayed.

For example, if a property should only be displayed if a boolean property manual_mode is true, the enablement expression would be:

manual_mode == true

Expressions are of the form:

<property-name> <operator> <value | values>

Where operator is one of those shown in this table:

Operator	Meaning
==	Equals
!=	Not equals
In	In - is one of the listed values
!in	Not in - is not one of the listed values
<	Less than
<=	Less than or equals
>	Greater than
>=	Greater than or equals

For in and !in operators, the value list is enclosed in brackets, ([ ]) with comma-separated values. For example:

month in [jan,feb,mar]

More complex expressions can be specified by using AND and OR operators. For example:

manual_mode == true AND month in [jan,feb,mar]