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[[acl-addPermission]]
=== addPermission

.Purpose

Grant a permission on a domain object instance to a recipient.

.Examples

[source,groovy]
----
aclUtilService.addPermission Report, 1124, 'user123', BasePermission.WRITE

aclUtilService.addPermission reportInstance, 'user123', BasePermission.WRITE
----

.Description

`addPermission` has three signatures:

[source,groovy]
----
void addPermission(Class<?> domainClass, long id, recipient, Permission permission)

void addPermission(domainObject, recipient, Permission permission)

void addPermission(ObjectIdentity oid, recipient, Permission permission)
----

.Parameters

* `domainClass` - the domain class, used when specifying the class and id
* `id` - the instance id, used when specifying the class and id
* `domainObject` - the domain class instance, used when the instance is available
* `recipient` - the grantee; can be a String (username or role name), or a `Sid`, or an `Authentication`
* `permission` - the permission to grant
