Database.com Metadata API Developer's Guide - Salesforce.com

Metadata TypesPermissionSetDeclarative Metadata File Suffix and Directory LocationPermission sets are stored in the permissionsets directory. The file name matches the permission set API name and theextension is .permissionset. For example, a permission set with the name User_Management_Perms is stored inpermissionsets/User_Management_Perms.permissionset.VersionPermission sets are available in API version 22.0 and later.FieldsFieldclassAccessesdescriptionfieldPermissionslabelobjectPermissionsuserLicenseuserPermissionsField TypePermissionSetApexClassAccess[]stringPermissionSetFieldPermissions[]stringDescriptionIndicates which top-level Apex classes have methodsthat users assigned to this permission set can execute.Available in API version 23.0 and later.The permission set description. Limit: 255 characters.Indicates which fields are accessible to a user assignedto this permission set, and the kind of access available(readable or editable). Available in API version 23.0and later.The permission set label. Limit: 80 characters.PermissionSetObjectPermissions[] Indicates the objects that are accessible to a userassigned to this permission set, and the kind of accessavailable (create, read, edit, delete, and so on).Available in API version 23.0 and later.stringPermissionSetUserPermission[]The User License for the permission set. A userlicense entitles a user to different functionality withinDatabase.com and determines which profiles andpermission sets are available to the user.Specifies an app or system permission (such as “APIEnabled”) and whether it's enabled for thispermission set. In API version 28.0 and earlier, thisfield retrieves all user permissions, enabled ordisabled. In API version 29.0 and later, this fieldretrieves only enabled user permissions.PermissionSetApexClassAccessPermissionSetApexClassAccess represents the Apex class access for users assigned to a permission set.FieldapexClassenabledField TypestringbooleanDescriptionRequired. The Apex class name.Required. Indicates whether users assigned to this permissionset can execute methods in the top-level class (true) or not(false).PermissionSetFieldPermissionsPermissionSetFieldPermissions represents the field permissions for users assigned to a permission set. In API version 30.0and later, permissions for required fields can’t be retrieved or deployed.127