How Can I execute INSERT/DELETE (SPARUL) statements against a WebID? protected SPARQL endpoint?

The following sample scenario demonstrates how to perform INSERT/DELETE (SPARUL) statements against a protected SPARQL Endpoint by setting WebID? Protocol ACLs using the Virtuoso Authentication Server UI:

Obtain a WebID?:
1. Download and install the ods_framework_dav.vad.
  - Note: an existing ODS DataSpace user instance can also be used, for example at http://id.myopenlink.net/ods/
2. Register an ODS Data Space user, for example with name "demo".
3. The generated WebID? will be for example:
```
http://id.myopenlink.net/dataspace/person/demo#this 
```
4. Generate a Personal HTTP based Identifier for the "demo" user and then bind the personal Identifier to an X.509 Certificate, thereby giving assigning the user a WebID?.
Download and install the conductor_dav.vad package, if not already installed.
Go to http://<cname>:<port>/conductor, where <cname>:<port> are replaced by your local server values.
Go to System Admin -> Linked Data -> Access Control -> SPARQL-WebID?
In the displayed form:
1. Enter the Web ID for the user registered above, for example:
```
http://id.myopenlink.net/dataspace/person/demo#this
```
2. Select "SPARQL Role": "UPDATE".
Click the "Register" button.
The WebID? Protocol ACL will be created:
Go to the SPARQL+WebID? endpoint, https://<cname>:<port>/sparql-webid, where <cname>:<port> are replaced by your local server values.
Select the user's certificate:
The SPARQL Query UI will be displayed:

Execute the query:


INSERT INTO GRAPH <http://mytest.com> {
  <s1> <p1> <o1> .
  <s2> <p2> <o2> .
  <s3> <p3> <o3> 
}

Note: If the SPARQL Role "Sponge" is set instead, in order to be able to execute DELETE/INSERT statements over the protected SPARQL Endpoint, the following grants need to be performed for the user, associated with the WebID? ACL Role:

grant execute on DB.DBA.SPARQL_INSERT_DICT_CONTENT to "demo";
grant execute on DB.DBA.SPARQL_DELETE_DICT_CONTENT to "demo";

How Can I execute INSERT/DELETE (SPARUL) statements against a WebID? protected SPARQL endpoint?

References