Performs space reclamation or compaction on a permanent file store in incremental steps.

Reclaiming unused space makes it available for re-use by the store. Compacting makes unused space available for re-use by the relevant system pool for example, the filing system in the case of file-based stores.

Once compaction is complete, the store must be committed.

Notes:

Space reclamation and compaction are only supported by the file store CPermanentFileStore and are not supported by embedded or direct file stores.

Use active objects when implementing space reclamation or compaction asynchronously.

This class performs incremental compaction/reclamation. These operations can be performed in a possibly long running single step using CStreamStore functions.