table cf colperm set

Sets access control expressions (ACEs) for a specified column.

Permissions Required

To run this command, your user ID must have the following permissions:

NOTE
The mapr user is not treated as a superuser. HPE Ezmeral Data Fabric Database does not allow the mapr user to run this command unless that user is given the relevant permission or permissions with access-control expressions.

Syntax

CLI
/opt/mapr/bin/maprcli table cf colperm set
  -path <path>
  -cfname <column-family name>
  -name <column name>
  [ -appendperm <Access Control Expression for column appends> ] 
  [ -readperm <Access Control Expression for column reads> ]
  [ -writeperm <Access Control Expression for column writes> ]
  [ -traverseperm <Access Control Expression for column traversals in JSON tables> ]
  [ -unmaskedreadperm <Unmasked read column permission settings> ]
REST
curl -k -X POST 
  'http[s]://<host>:<port>/rest/table/cf/colperm/set?path=<path>&cfname=<name>&name=<name>&<parameters>'
  -u <username>:<password>

Parameters

Parameter

Description

path

The path to the table.

  • For a path on the local cluster, start the path at the volume mount point. For example, for a table named test under volume1 which has a mount point at /volume1, specify the following path: /volume1/test
  • For a path on a remote cluster, you must also specify the cluster name in the path. For example, for a table named test under volume1 in the sanfrancisco cluster, specify the following path:/mapr/sanfrancisco/volume1/customer

cfname

The name of the column family in which the column is located.
name For binary tables: The name of the column for which you want to set the Access Control Expression (ACE).
For JSON tables: The fieldpath of the field on which you want to set permissions. For example, if you wanted to grant readperm to a user on field b in the following document. the fieldpath would be a.b.
{
  "a" : {
          "b" : "value_b"
        }
}
appendperm

Applies to binary tables only: The ACE for column appends. Use single quotation marks around the ACE.

Column appends require permission both at the column-family level and at the column level.
readperm

The ACE for column reads. Use single quotation marks around the ACE.

Reads require permission both at the column-family level and at the column level (for binary tables) or field level (for JSON tables). In JSON tables, this permission is inherited by fields within the column family.
writeperm

The ACE for column writes (puts and deletes). Use single quotation marks around the ACE.

Writes require permission both at the column-family level and at the column level (for binary tables) or field level (for JSON tables). In JSON tables, this permission is inherited by fields within the column family.
traverseperm
Applies to JSON tables only: The Access Control Expressions that specifies who has permission to pass over fields in JSON documents. For example, suppose that a JSON table contains documents of this general structure: 
{
     "_id" : "ID",
     "a" :
          {
               "b" : "value",
               "c" : "value"
          }
}
Suppose further that the user sjohnson has read permission on a.b, but not on a. For sjohnson to read a.b, the user needs the traverse permission on a. The user can then pass over field a to a.b.

This permission is inherited by fields within the column family. By default, this permission is given to the value of defaulttraverseperm for the JSON table.

unmaskedreadperm The unmaskedreadperm permission, when applied to a column of a JSON table with a dynamic data mask set, allows the user to read the data unmasked. Users without this permission have the masked data returned.

Example

Sets readperm ACE for column col1 in table mytable and column family cf1 :

CLI
/opt/mapr/bin/maprcli table cf colperm set -path /mytable -cfname cf1 -name col1 -readperm 'g:group1'
REST
curl -X POST \
  'https://r1n1.sj.us:8443/rest/table/cf/colperm/set?path=%2Fmytable&cfname=cf1&name=col1&readperm="g:group1"' \
  -u <username>:<password>