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2.3.5 PersistDirectoryEntry

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Referenced by: PersistDirectoryAtom

A structure that specifies a compressed table of sequential persist object identifiers and stream offsets to associated persist objects.

Let the corresponding user edit be specified by the UserEditAtom record (section 2.3.3) that most closely follows the PersistDirectoryAtom record (section 2.3.4) that contains this structure.

Let the corresponding persist object directory be specified by the PersistDirectoryAtom record that contains this structure.


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persistId

cPersist

rgPersistOffset (variable)

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persistId (20 bits): An unsigned integer that specifies a starting persist object identifier. It MUST be less than or equal to 0xFFFFE. The first entry in rgPersistOffset is associated with persistId. The next entry, if present, is associated with persistId plus 1. Each entry in rgPersistOffset is associated with a persist object identifier in this manner, with the final entry associated with persistId + cPersist – 1.

cPersist (12 bits): An unsigned integer that specifies the count of items in rgPersistOffset. It MUST be greater than or equal to 0x001.

rgPersistOffset (variable): An array of PersistOffsetEntry (section 2.3.6) that specifies stream offsets to persist objects. The count of items in the array is specified by cPersist. The value of each item MUST be greater than or equal to offsetLastEdit in the corresponding user edit and MUST be less than the offset, in bytes, of the corresponding persist object directory.

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