Data Views With Hierarchy and a Distribution Algorithm

This section describes how to configure a data view to combine hierarchy with distribution algorithms. For information about this type of deployment, see Data Views With Hierarchy and a Distribution Algorithm in Oracle Fusion Middleware Reference for Oracle Directory Server Enterprise Edition.

The example in this section contains four data views. The base DN of data view 1 is superior to the base DNs of the other data views. Data view 3 and data view 4 have the same base DN, but a numeric distribution algorithm separates the entries into different data views.

Directory Proxy Server automatically excludes a subordinate branch of a subtree from a data view when the subordinate branch is configured as the base DN of a separate data view. A numeric distribution algorithm separates entries from the same subtree into different data views. A data source pool is configured for each set of data-equivalent data sources.

The following figure shows the example deployment.

Figure 21–2 Sample Data View With Hierarchy and a Distribution Algorithm

To Configure Data Views With Hierarchy and a Distribution Algorithm

You cannot use DSCC to perform this task. Use the command line, as described in this procedure.

1. Create a data source for each LDAP server as described in Creating and Configuring LDAP Data Sources.

2. Create four data source pools as described in Creating and Configuring LDAP Data Source Pools.

3. Attach the data sources to the data source pools by following the instructions in Attaching LDAP Data Sources to a Data Source Pool.

   • Attach the data sources that contain dc=example,dc=com to data-source-pool-1.

   • Attach the data sources that contain ou=computer,dc=example,dc=com to data-source-pool-2.

   • Attach the data sources that contain entries in ou=people,dc=example,dc=com with uid between 0 and 99 to data-source-pool-3.

   • Attach the data sources that contain entries in ou=people,dc=example,dc=com with uid between 100 and 199 to data-source-pool-4.

4. (Optional) Configure load balancing.

   For information, see Configuring Load Balancing.

5. Create a data view with a base DN at dc=example,dc=com, that refers to data-source-pool-1.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-1 \ data-source-pool-1 dc=example,dc=com

6. Create a data view with a base DN at ou=computer,dc=example,dc=com that refers to data-source-pool-2.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-2 \ data-source-pool-2 ou=computer,dc=example,dc=com

7. Create a data view with a base DN at ou=people,dc=example,dc=com that refers to data-source-pool-3. Configure a distribution algorithm on the data view to select entries with uid between 0 and 99.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-3 \ data-source-pool-3 ou=people,dc=example,dc=com $ dpconf set-ldap-data-view-prop dataview-3 distribution-algorithm:numeric \ numeric-attrs:uid numeric-lower-bound:0 numeric-upper-bound:99

8. Create a data view with a base DN at ou=people,dc=example,dc=com that refers to data-source-pool-4, and configure a distribution algorithm on the data view to select entries with uid between 100 and 199.

   $ dpconf create-ldap-data-view -h host1 -p 1389 dataview-4 \ data-source-pool-4 ou=people,dc=example,dc=com $ dpconf set-ldap-data-view-prop dataview-4 distribution-algorithm:numeric \ numeric-attrs:uid numeric-lower-bound:100 numeric-upper-bound:199

9. Verify that the subtrees ou=computer,dc=example, dc=com and ou=people,dc=example, dc=com have been excluded from dataview-1 by looking at the excluded-subtrees parameter.

   $ dpconf get-ldap-data-view-prop -h host1 -p 1389 dataview-1 excluded-subtrees

   The list of excluded subtrees is returned.

10. Restart the instance of Directory Proxy Server for the changes to take effect.

    For information about restarting Directory Proxy Server, see To Restart Directory Proxy Server.