BMetaDataNode Class Reference
[Data Model]

#include <storage/MetaDataNode.h>

Inheritance diagram for BMetaDataNode:

List of all members.

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Detailed Description

A base class of INode that provides all standard meta-data.

This class derives from BGenericNode, adding to it an implementation of the basic meta-data (mimeType, creationDate, modifiedDate). Derived classes need only implement LookupEntry() to have a fully functioning INode.

Todo:

Should an option be added here to allow the node to store any arbitrary meta-data? Or should that functionality be provided in some further derived class (such as BCatalog)? I guess this depends on whether we want to allow others to rely on extendable meta-data functionality...

Bookkeeping
Creation, destruction, locking, etc.
	BMetaDataNode (const SContext &context)
	BMetaDataNode ()
void	TouchLocked ()
	Update the modified date.
virtual	~BMetaDataNode ()
BGenericNode Metadata API
Implement the BGenericNode virtuals needed to support the basic meta-data of a node.
virtual nsecs_t	CreationDateLocked () const
	You must implement this to return the creation date.
virtual SString	MimeTypeLocked () const
	Default implementation always returns "application/vnd.palm.catalog".
virtual nsecs_t	ModifiedDateLocked () const
	You must implement this to return the last modification date.
virtual status_t	StoreCreationDateLocked (nsecs_t value)
	Default implementation does nothing, returning B_UNSUPPORTED.
virtual status_t	StoreMimeTypeLocked (const SString &value)
	Default implementation does nothing, returning B_UNSUPPORTED.
virtual status_t	StoreModifiedDateLocked (nsecs_t value)
	Default implementation does nothing, returning B_UNSUPPORTED.

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Constructor & Destructor Documentation

BMetaDataNode (   )

BMetaDataNode (  const SContext &  context  )

~BMetaDataNode (   )  [protected, virtual]

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Member Function Documentation

nsecs_t CreationDateLocked (   )  const [virtual]

You must implement this to return the creation date. Implements BGenericNode.

SString MimeTypeLocked (   )  const [virtual]

Default implementation always returns "application/vnd.palm.catalog". Reimplemented from BGenericNode. Reimplemented in BSchemaRowIDJoin::RowNode, BSchemaTableNode::RowNode, and BIndexedTableNode::RowNode.

nsecs_t ModifiedDateLocked (   )  const [virtual]

You must implement this to return the last modification date. Implements BGenericNode.

status_t StoreCreationDateLocked (  nsecs_t  value  )  [virtual]

Default implementation does nothing, returning B_UNSUPPORTED. Reimplemented from BGenericNode.

status_t StoreMimeTypeLocked (  const SString &  value  )  [virtual]

Default implementation does nothing, returning B_UNSUPPORTED. Reimplemented from BGenericNode. Reimplemented in BSchemaRowIDJoin::RowNode, BSchemaTableNode::RowNode, and BIndexedTableNode::RowNode.

status_t StoreModifiedDateLocked (  nsecs_t  value  )  [virtual]

Default implementation does nothing, returning B_UNSUPPORTED. Reimplemented from BGenericNode.

void TouchLocked (   )

Update the modified date.

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The documentation for this class was generated from the following files:

• MetaDataNode.h
• MetaDataNode.cpp

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Generated on Wed Dec 28 22:33:30 2005 by Doxygen 1.4.4 for OpenBinder Documentation Version 1.0

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