Modifying endpoint behaviors

You can configure schema properties with additional behaviors, such as:

Setting the property to read-only
Indicating the property as required by the database
Making the property sortable or filterable by the corresponding collection
Adding additional metadata, such as the first version of the API to include the property

These additional behaviors are typically defined using one or more property attributes.

Where are property attributes configurable?

Most attributes are configurable from the schema file. Within the schema file, some property attributes are declared directly on the property itself. This includes:

Standard JSON properties, such as readOnly
Guidewire extension properties declared directly off the attribute, such as x-gw-sinceExtensionVersion

Other property attributes are Guidewire extensions declared in an object named x-gw-extension. This includes:

filterable and sortable
requiredForCreate

For example, if you had an expirationDate property that was filterable, sortable, and required for creation, the syntax for the declaration of these properties would be as follows:

      "properties": {
        "expirationDate": {
          ...
          "x-gw-extensions": {
            "requiredForCreate": true,
            "filterable": true,
            "sortable": true
          }
        }

Still other properties can only be modified through the use of resource files, such as some custom sorts and filters.

Summary of schema property attributes

The following attributes are direct children of the property declaration:


Attribute	Description	Example
`readOnly`	Boolean identifying if the property as read-only. (The default is false.)	`"readOnly": true`
`x-gw-nullable`	Boolean identifying if the property can be explicitly set to null. (The default is true.) Used to set a property as required by the database. For more information, see Making properties required by the database.	`"x-gw-nullable": false`
`x-gw-sinceExtensionsVersion`	String identifying the first version of the API to include the extension property	`"x-gw-sinceExtensionsVersion": "1.1.0"`

The following attributes are declared in the x-gw-extension object:


Attribute	Description	Example
`createOnly`	Boolean identifying if the property can be specified only when the object is created. (The default is false.)	`"createOnly": true`
`filterable`	Boolean identifying if the `filter` query parameter can be used on this property. In other words, collections can be filtered using this property. (The default is false.)	`"filterable": true`
`requiredForCreate`	Boolean identifying if the property must be specified when the object is created. (The default is false.) Used to set a property as required by the database. For more information, see Making properties required by the database.	`"requiredForCreate": true`
`sortable`	Boolean identifying if the `sort` query parameter can be used on this property. In other words, collections can be sorted using this property. (The default is false.)	`"sortable": true`