Permission check for a DataObject.

MyDataObject.php

class MyDataObject extends DataObject implements PermissionProvider {
/**
...
*/
    /**
     * Return a map of permission codes to add to the dropdown shown in the Security section of the CMS.
     * array(
     *   'VIEW_SITE' => 'View the site',
     * );
     */
    public function providePermissions()
    {
        return array(
            "MANAGE_XXX" => array(
                'name' => _t('ManageXXX', 'Manage XXX'),
                'category' => _t('Permission.XXX_CATEGORY', 'XXX')
            )
        );
    }

    /**
     * @inheritdoc
     */
    public function canCreate($member = null){
        return Permission::check('MANAGE_XXX')
            ? true
            : parent::canCreate($member);
    }

    /**
     * @inheritdoc
     */
    public function canView($member = null){
        return Permission::check('MANAGE_XXX')
            ? true
            : parent::canView($member);
    }

    /**
     * @inheritdoc
     */
    public function canEdit($member = null){
        return Permission::check('MANAGE_XXX')
            ? true
            : parent::canEdit($member);
    }

    /**
     * @inheritdoc
     */
    public function canDelete($member = null){
        return Permission::check('MANAGE_XXX')
            ? true
            : parent::canDelete($member);
    }    
}