2.2.2.1 NID (Node ID)
Nodes provide the primary abstraction used to reference data stored in the PST file that is not interpreted by the NDB layer. Each node is identified using its NID. Each NID is unique within the namespace in which it is used. Each node referenced by the NBT MUST have a unique NID. However, two subnodes of two different nodes can have identical NIDs, but two subnodes of the same node MUST have different NIDs.
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nidType |
nidIndex |
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nidType (5 bits): Identifies the type of the node represented by the NID. The following table specifies a list of values for nidType. However, it is worth noting that nidType has no meaning to the structures defined in the NDB Layer.
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Value |
Friendly name |
Description |
|---|---|---|
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0x00 |
NID_TYPE_HID |
Heap node |
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0x01 |
NID_TYPE_INTERNAL |
Internal node (section 2.4.1) |
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0x02 |
NID_TYPE_NORMAL_FOLDER |
Normal Folder object (PC) |
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0x03 |
NID_TYPE_SEARCH_FOLDER |
Search Folder object (PC) |
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0x04 |
NID_TYPE_NORMAL_MESSAGE |
Normal Message object (PC) |
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0x05 |
NID_TYPE_ATTACHMENT |
Attachment object (PC) |
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0x06 |
NID_TYPE_SEARCH_UPDATE_QUEUE |
Queue of changed objects for search Folder objects |
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0x07 |
NID_TYPE_SEARCH_CRITERIA_OBJECT |
Defines the search criteria for a search Folder object |
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0x08 |
NID_TYPE_ASSOC_MESSAGE |
Folder associated information (FAI) Message object (PC) |
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0x0A |
NID_TYPE_CONTENTS_TABLE_INDEX |
Internal, persisted view-related |
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0X0B |
NID_TYPE_RECEIVE_FOLDER_TABLE |
Receive Folder object (Inbox) |
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0x0C |
NID_TYPE_OUTGOING_QUEUE_TABLE |
Outbound queue (Outbox) |
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0x0D |
NID_TYPE_HIERARCHY_TABLE |
Hierarchy table (TC) |
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0x0E |
NID_TYPE_CONTENTS_TABLE |
Contents table (TC) |
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0x0F |
NID_TYPE_ASSOC_CONTENTS_TABLE |
FAI contents table (TC) |
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0x10 |
NID_TYPE_SEARCH_CONTENTS_TABLE |
Contents table (TC) of a search Folder object |
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0x11 |
NID_TYPE_ATTACHMENT_TABLE |
Attachment table (TC) |
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0x12 |
NID_TYPE_RECIPIENT_TABLE |
Recipient table (TC) |
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0x13 |
NID_TYPE_SEARCH_TABLE_INDEX |
Internal, persisted view-related |
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0x1F |
NID_TYPE_LTP |
LTP |
nidIndex (27 bits): The identification portion of the NID.