The Null Local Backend Workflow Element provides a Directory Server backend that implements a /dev/null like behavior for development and testing.
The Null Local Backend Workflow Element behaves as follows: all search operations return success but no data; all write operations do nothing; bind operations fail with invalid credentials; compare operations are only possible on objectClass and return true for top, nullBackendObject, and extensibleObject. In addition controls are supported although this implementation does not provide any specific emulation for controls. Generally known request controls are accepted and default response controls returned where applicable. Searches within a Null Local Backend Workflow Element are always considered indexed. Null Local Backend Workflow Elements are for development and testing only.
The Null Local Backend Workflow Element component inherits from the Local Backend Workflow Element
A description of each property follows.
| Basic Properties: | Advanced Properties: |
|---|---|
| ↓ base-dn | ↓ java-class |
| ↓ enabled | |
| ↓ writability-mode |
| Description | Specifies the base DN(s) for the data that the backend handles. A single backend may be responsible for one or more base DNs. Note that no two backends may have the same base DN although one backend may have a base DN that is below a base DN provided by another backend. If any of the base DNs is subordinate to a base DN for another backend, then all base DNs for that backend must be subordinate to that same base DN. |
| Default Value | None |
| Allowed Values | A valid DN. |
| Multi-valued | Yes |
| Required | Yes |
| Admin Action Required | None. No administrative action is required by default although some action may be required on a per-backend basis before the new base DN may be used. |
| Advanced Property | No |
| Read-only | No |
| Description | Indicates whether the Workflow Element is enabled for use in the server. If a Workflow Element is not enabled, then its contents are not accessible when processing operations. |
| Default Value | None |
| Allowed Values | true false |
| Multi-valued | No |
| Required | Yes |
| Admin Action Required | None |
| Advanced Property | No |
| Read-only | No |
| Description | Specifies the behavior that the backend should use when processing write operations. |
| Default Value | enabled |
| Allowed Values | disabled - Causes all write attempts to fail. enabled - Allows write operations to be performed in that backend (if the requested operation is valid, the user has permission to perform the operation, the backend supports that type of write operation, and the global writability-mode property is also enabled). internal-only - Causes external write attempts to fail but allows writes by replication and internal operations. |
| Multi-valued | No |
| Required | Yes |
| Admin Action Required | None |
| Advanced Property | No |
| Read-only | No |
| Description | Specifies the fully-qualified name of the Java class that provides the Null Local Backend Workflow Element implementation. |
| Default Value | org.opends.server.workflowelement.localbackend.NullLocalBackendWorkflowElement |
| Allowed Values | A java class that implements or extends the class(es) : org.opends.server.workflowelement.WorkflowElement |
| Multi-valued | No |
| Required | Yes |
| Admin Action Required | None |
| Advanced Property | Yes |
| Read-only | No |