Ordered collection of uniquely-named attribute arrays. More...

#include <openvdb/points/AttributeSet.h>

Inherits Descriptor.

Classes
struct	Inserter
	Utility method to construct a NameAndType sequence. More...

struct	Util

Public Types
enum	{ INVALID_POS = std::numeric_limits<size_t>::max() }

using	Ptr = std::shared_ptr< AttributeSet >

using	ConstPtr = std::shared_ptr< const AttributeSet >

using	UniquePtr = std::unique_ptr< AttributeSet >

using	DescriptorPtr = std::shared_ptr< Descriptor >

using	DescriptorConstPtr = std::shared_ptr< const Descriptor >

using	Ptr = std::shared_ptr< Descriptor >

using	NameAndType = Util::NameAndType

using	NameAndTypeVec = Util::NameAndTypeVec

using	GroupIndex = Util::GroupIndex

using	NameToPosMap = Util::NameToPosMap

using	ConstIterator = NameToPosMap::const_iterator

Public Member Functions
	AttributeSet ()

	AttributeSet (const AttributeSet &attributeSet, Index arrayLength, const AttributeArray::ScopedRegistryLock *lock=nullptr)

	AttributeSet (const DescriptorPtr &descriptor, Index arrayLength=1, const AttributeArray::ScopedRegistryLock *lock=nullptr)

	AttributeSet (const AttributeSet &)
	Shallow copy constructor, the descriptor and attribute arrays will be shared. More...

AttributeSet &	operator= (const AttributeSet &)=delete
	Disallow copy assignment, since it wouldn't be obvious whether the copy is deep or shallow. More...

DescriptorPtr	descriptorPtr () const
	Return a pointer to this attribute set's descriptor, which might be shared with other sets. More...

size_t	size () const
	Return the number of attributes in this set. More...

size_t	memUsage () const
	Return the number of bytes of memory used by this attribute set. More...

size_t	find (const std::string &name) const
	Return the position of the attribute array whose name is name, or `INVALID_POS` if no match is found. More...

size_t	replace (const std::string &name, const AttributeArray::Ptr &)
	Replace the attribute array whose name is name. More...

size_t	replace (size_t pos, const AttributeArray::Ptr &)
	Replace the attribute array stored at position pos in this container. More...

Util::GroupIndex	groupIndex (const Name &groupName) const
	Return the group index from the name of the group. More...

Util::GroupIndex	groupIndex (const size_t offset) const

std::vector< size_t >	groupAttributeIndices () const
	Return the indices of the attribute arrays which are group attribute arrays. More...

bool	isShared (size_t pos) const
	Return true if the attribute array stored at position pos is shared. More...

void	makeUnique (size_t pos)
	If the attribute array stored at position pos is shared, replace the array with a deep copy of itself that is not shared with anyone else. More...

AttributeArray::Ptr	appendAttribute (const Name &name, const NamePair &type, const Index strideOrTotalSize=1, const bool constantStride=true, const Metadata *defaultValue=nullptr)
	Append attribute attribute (simple method) More...

AttributeArray::Ptr	appendAttribute (const Descriptor &expected, DescriptorPtr &replacement, const size_t pos, const Index strideOrTotalSize=1, const bool constantStride=true, const Metadata defaultValue=nullptr, const AttributeArray::ScopedRegistryLock lock=nullptr)

AttributeArray::Ptr	removeAttribute (const Name &name)
	Remove and return an attribute array by name. More...

AttributeArray::Ptr	removeAttribute (const size_t pos)
	Remove and return an attribute array by index. More...

AttributeArray::Ptr	removeAttributeUnsafe (const size_t pos)
	Remove and return an attribute array by index (unsafe method) More...

void	dropAttributes (const std::vector< size_t > &pos)

void	dropAttributes (const std::vector< size_t > &pos, const Descriptor &expected, DescriptorPtr &replacement)

void	renameAttributes (const Descriptor &expected, const DescriptorPtr &replacement)

void	reorderAttributes (const DescriptorPtr &replacement)

void	resetDescriptor (const DescriptorPtr &replacement, const bool allowMismatchingDescriptors=false)

void	read (std::istream &)
	Read the entire set from a stream. More...

void	write (std::ostream &, bool outputTransient=false) const

void	readDescriptor (std::istream &)
	This will read the attribute descriptor from a stream. More...

void	writeDescriptor (std::ostream &, bool outputTransient=false) const

void	readMetadata (std::istream &)
	This will read the attribute metadata from a stream. More...

void	writeMetadata (std::ostream &, bool outputTransient=false, bool paged=false) const

void	readAttributes (std::istream &)
	This will read the attribute data from a stream. More...

void	writeAttributes (std::ostream &, bool outputTransient=false) const

bool	operator== (const AttributeSet &other) const

bool	operator!= (const AttributeSet &other) const

	Descriptor ()

	Descriptor (const Descriptor &)
	Copy constructor. More...

Ptr	duplicateAppend (const Name &name, const NamePair &type) const
	Create a new descriptor as a duplicate with a new attribute appended. More...

Ptr	duplicateDrop (const std::vector< size_t > &pos) const
	Create a new descriptor as a duplicate with existing attributes dropped. More...

size_t	size () const
	Return the number of attributes in this descriptor. More...

size_t	count (const NamePair &type) const
	Return the number of attributes with this attribute type. More...

size_t	memUsage () const
	Return the number of bytes of memory used by this attribute set. More...

size_t	find (const std::string &name) const
	Return the position of the attribute array whose name is name, or `INVALID_POS` if no match is found. More...

size_t	rename (const std::string &fromName, const std::string &toName)
	Rename an attribute array. More...

const Name &	valueType (size_t pos) const
	Return the name of the attribute array's type. More...

const NamePair &	type (size_t pos) const
	Return the name of the attribute array's type. More...

MetaMap &	getMetadata ()
	Retrieve metadata map. More...

const MetaMap &	getMetadata () const

bool	hasDefaultValue (const Name &name) const
	Return true if the attribute has a default value. More...

template<typename ValueType >
ValueType	getDefaultValue (const Name &name) const
	Get a default value for an existing attribute. More...

void	setDefaultValue (const Name &name, const Metadata &defaultValue)
	Set a default value for an existing attribute. More...

void	removeDefaultValue (const Name &name)

void	pruneUnusedDefaultValues ()

bool	operator== (const Descriptor &) const
	Return true if this descriptor is equal to the given one. More...

bool	operator!= (const Descriptor &rhs) const
	Return true if this descriptor is not equal to the given one. More...

bool	hasSameAttributes (const Descriptor &rhs) const

const NameToPosMap &	map () const
	Return a reference to the name-to-position map. More...

const NameToPosMap &	groupMap () const
	Return a reference to the name-to-position group map. More...

bool	hasGroup (const Name &group) const
	Return `true` if group exists. More...

void	setGroup (const Name &group, const size_t offset, const bool checkValidOffset=false)
	Define a group name to offset mapping. More...

void	dropGroup (const Name &group)
	Drop any mapping keyed by group name. More...

void	clearGroups ()
	Clear all groups. More...

size_t	renameGroup (const std::string &fromName, const std::string &toName)
	Rename a group. More...

const Name	uniqueGroupName (const Name &name) const
	Return a unique name for a group based on given name. More...

GroupIndex	groupIndex (const Name &groupName) const
	Return the group index from the name of the group. More...

GroupIndex	groupIndex (const size_t offset) const

size_t	availableGroups () const

size_t	unusedGroups () const

bool	canCompactGroups () const
	Return `true` if there are sufficient empty slots to allow compacting. More...

size_t	unusedGroupOffset (size_t hint=std::numeric_limits< size_t >::max()) const
	Return a group offset that is not in use. More...

bool	requiresGroupMove (Name &sourceName, size_t &sourceOffset, size_t &targetOffset) const
	Determine if a move is required to efficiently compact the data and store the source name, offset and the target offset in the input parameters. More...

bool	groupIndexCollision (const Descriptor &rhs) const
	Test if there are any group names shared by both descriptors which have a different index. More...

const Name	uniqueName (const Name &name) const
	Return a unique name for an attribute array based on given name. More...

void	write (std::ostream &) const
	Serialize this descriptor to the given stream. More...

void	read (std::istream &)
	Unserialize this transform from the given stream. More...


Descriptor &	descriptor ()
	Return a reference to this attribute set's descriptor, which might be shared with other sets. More...

const Descriptor &	descriptor () const
	Return a reference to this attribute set's descriptor, which might be shared with other sets. More...


const AttributeArray *	getConst (const std::string &name) const
	Return a pointer to the attribute array whose name is name or a null pointer if no match is found. More...

const AttributeArray *	get (const std::string &name) const
	Return a pointer to the attribute array whose name is name or a null pointer if no match is found. More...

AttributeArray *	get (const std::string &name)
	Return a pointer to the attribute array whose name is name or a null pointer if no match is found. More...


const AttributeArray *	getConst (size_t pos) const
	Return a pointer to the attribute array stored at position pos in this set. More...

const AttributeArray *	get (size_t pos) const
	Return a pointer to the attribute array stored at position pos in this set. More...

AttributeArray *	get (size_t pos)
	Return a pointer to the attribute array stored at position pos in this set. More...


size_t	groupOffset (const Name &groupName) const
	Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set. More...

size_t	groupOffset (const Util::GroupIndex &index) const
	Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set. More...


size_t	groupOffset (const Name &groupName) const
	Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set. More...

size_t	groupOffset (const GroupIndex &index) const
	Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set. More...

Static Public Member Functions
static Ptr	create (const NamePair &)
	Create a new descriptor from a position attribute type and assumes "P" (for convenience). More...

static size_t	groupBits ()
	Return number of bits occupied by a group attribute array. More...

static bool	validName (const Name &name)
	Return true if the name is valid. More...

static void	parseNames (std::vector< std::string > &includeNames, std::vector< std::string > &excludeNames, bool &includeAll, const std::string &nameStr)
	Extract each name from nameStr into includeNames, or into excludeNames if the name is prefixed with a caret. More...

static void	parseNames (std::vector< std::string > &includeNames, std::vector< std::string > &excludeNames, const std::string &nameStr)
	Extract each name from nameStr into includeNames, or into excludeNames if the name is prefixed with a caret. More...

Protected Member Functions
void	appendTo (NameAndTypeVec &attrs) const
	Append to a vector of names and types from this Descriptor in position order. More...

size_t	insert (const std::string &name, const NamePair &typeName)

Static Protected Member Functions
static Ptr	create (const NameAndTypeVec &, const NameToPosMap &, const MetaMap &)

Friends
class	::TestAttributeSet

Detailed Description

Ordered collection of uniquely-named attribute arrays.

An immutable object that stores name, type and AttributeSet position for a constant collection of attribute arrays.

Note: The attribute name is actually mutable, but the attribute type and position can not be changed after creation.

Member Typedef Documentation

using ConstIterator = NameToPosMap::const_iterator

using ConstPtr = std::shared_ptr<const AttributeSet>

using DescriptorConstPtr = std::shared_ptr<const Descriptor>

using DescriptorPtr = std::shared_ptr<Descriptor>

using GroupIndex = Util::GroupIndex

using NameAndType = Util::NameAndType

using NameAndTypeVec = Util::NameAndTypeVec

using NameToPosMap = Util::NameToPosMap

using Ptr = std::shared_ptr<AttributeSet>

using Ptr = std::shared_ptr<Descriptor>

using UniquePtr = std::unique_ptr<AttributeSet>

Member Enumeration Documentation

anonymous enum

Enumerator
INVALID_POS

Constructor & Destructor Documentation

AttributeSet ( )

AttributeSet	(	const AttributeSet &	attributeSet,
		Index	arrayLength,
		const AttributeArray::ScopedRegistryLock *	lock = `nullptr`
	)

Construct a new AttributeSet from the given AttributeSet.

Parameters

attributeSet	the old attribute set
arrayLength	the desired length of the arrays in the new AttributeSet
lock	an optional scoped registry lock to avoid contention

Note: This constructor is typically used to resize an existing AttributeSet as it transfers attribute metadata such as hidden and transient flags

AttributeSet	(	const DescriptorPtr &	descriptor,
		Index	arrayLength = `1`,
		const AttributeArray::ScopedRegistryLock *	lock = `nullptr`
	)

Construct a new AttributeSet from the given Descriptor.

Parameters

descriptor	stored in the new AttributeSet and used in construction
arrayLength	the desired length of the arrays in the new AttributeSet
lock	an optional scoped registry lock to avoid contention

Note: Descriptors do not store attribute metadata such as hidden and transient flags which live on the AttributeArrays, so for constructing from an existing AttributeSet use the AttributeSet(const AttributeSet&, Index) constructor instead

AttributeSet ( const AttributeSet & )

Shallow copy constructor, the descriptor and attribute arrays will be shared.

Member Function Documentation

AttributeArray::Ptr appendAttribute	(	const Name &	name,
		const NamePair &	type,
		const Index	strideOrTotalSize = `1`,
		const bool	constantStride = `true`,
		const Metadata *	defaultValue = `nullptr`
	)

Append attribute attribute (simple method)

AttributeArray::Ptr appendAttribute	(	const Descriptor &	expected,
		DescriptorPtr &	replacement,
		const size_t	pos,
		const Index	strideOrTotalSize = `1`,
		const bool	constantStride = `true`,
		const Metadata *	defaultValue = `nullptr`,
		const AttributeArray::ScopedRegistryLock *	lock = `nullptr`
	)

Append attribute attribute (descriptor-sharing) Requires current descriptor to match expected On append, current descriptor is replaced with replacement Provide a lock object to avoid contention from appending in parallel

void appendTo ( NameAndTypeVec & attrs ) const

protected

Append to a vector of names and types from this Descriptor in position order.

size_t availableGroups ( ) const

Return the total number of available groups (group bits * number of group attributes)

bool canCompactGroups ( ) const

Return true if there are sufficient empty slots to allow compacting.

void clearGroups ( )

Clear all groups.

size_t count ( const NamePair & type ) const

Return the number of attributes with this attribute type.

static Ptr create ( const NamePair & )

static

Create a new descriptor from a position attribute type and assumes "P" (for convenience).

static Ptr create	(	const NameAndTypeVec &	,
		const NameToPosMap &	,
		const MetaMap &
	)

staticprotected

Create a new descriptor from the given attribute and type name pairs and copy the group maps and metamap.

Descriptor& descriptor ( )

inline

Return a reference to this attribute set's descriptor, which might be shared with other sets.

const Descriptor& descriptor ( ) const

inline

Return a reference to this attribute set's descriptor, which might be shared with other sets.

Descriptor ( )

Descriptor ( const Descriptor & )

Copy constructor.

DescriptorPtr descriptorPtr ( ) const

inline

Return a pointer to this attribute set's descriptor, which might be shared with other sets.

void dropAttributes ( const std::vector< size_t > & pos )

Drop attributes with pos indices (simple method) Creates a new descriptor for this attribute set

void dropAttributes	(	const std::vector< size_t > &	pos,
		const Descriptor &	expected,
		DescriptorPtr &	replacement
	)

Drop attributes with pos indices (descriptor-sharing method) Requires current descriptor to match expected On drop, current descriptor is replaced with replacement

void dropGroup ( const Name & group )

Drop any mapping keyed by group name.

Ptr duplicateAppend	(	const Name &	name,
		const NamePair &	type
	)		const

Create a new descriptor as a duplicate with a new attribute appended.

Ptr duplicateDrop ( const std::vector< size_t > & pos ) const

Create a new descriptor as a duplicate with existing attributes dropped.

size_t find ( const std::string & name ) const

Return the position of the attribute array whose name is name, or INVALID_POS if no match is found.

size_t find ( const std::string & name ) const

Return the position of the attribute array whose name is name, or INVALID_POS if no match is found.

const AttributeArray* get ( const std::string & name ) const

Return a pointer to the attribute array whose name is name or a null pointer if no match is found.

AttributeArray* get ( const std::string & name )

Return a pointer to the attribute array whose name is name or a null pointer if no match is found.

const AttributeArray* get ( size_t pos ) const

Return a pointer to the attribute array stored at position pos in this set.

AttributeArray* get ( size_t pos )

Return a pointer to the attribute array stored at position pos in this set.

const AttributeArray* getConst ( const std::string & name ) const

Return a pointer to the attribute array whose name is name or a null pointer if no match is found.

const AttributeArray* getConst ( size_t pos ) const

Return a pointer to the attribute array stored at position pos in this set.

ValueType getDefaultValue ( const Name & name ) const

inline

Get a default value for an existing attribute.

MetaMap& getMetadata ( )

Retrieve metadata map.

const MetaMap& getMetadata ( ) const

std::vector<size_t> groupAttributeIndices ( ) const

Return the indices of the attribute arrays which are group attribute arrays.

static size_t groupBits ( )

inlinestatic

Return number of bits occupied by a group attribute array.

Util::GroupIndex groupIndex ( const Name & groupName ) const

Return the group index from the name of the group.

Util::GroupIndex groupIndex ( const size_t offset ) const

Return the group index from the offset of the group

Note: see offset description for groupOffset()

GroupIndex groupIndex ( const Name & groupName ) const

Return the group index from the name of the group.

GroupIndex groupIndex ( const size_t offset ) const

Return the group index from the offset of the group

Note: see offset description for groupOffset()

bool groupIndexCollision ( const Descriptor & rhs ) const

Test if there are any group names shared by both descriptors which have a different index.

Parameters

rhs	the descriptor to compare with

Returns: true if an index collision exists

const NameToPosMap& groupMap ( ) const

inline

Return a reference to the name-to-position group map.

size_t groupOffset ( const Name & groupName ) const

Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set.

size_t groupOffset ( const Util::GroupIndex & index ) const

Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set.

size_t groupOffset ( const Name & groupName ) const

Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set.

size_t groupOffset ( const GroupIndex & index ) const

Return the group offset from the name or index of the group A group attribute array is a single byte (8-bit), each bit of which can denote a group. The group offset is the position of the bit that denotes the requested group if all group attribute arrays in the set (and only attribute arrays marked as group) were to be laid out linearly according to their order in the set.

bool hasDefaultValue ( const Name & name ) const

Return true if the attribute has a default value.

bool hasGroup ( const Name & group ) const

Return true if group exists.

bool hasSameAttributes ( const Descriptor & rhs ) const

Return true if this descriptor contains the same attributes as the given descriptor, ignoring attribute order

size_t insert	(	const std::string &	name,
		const NamePair &	typeName
	)

protected

bool isShared ( size_t pos ) const

Return true if the attribute array stored at position pos is shared.

void makeUnique ( size_t pos )

If the attribute array stored at position pos is shared, replace the array with a deep copy of itself that is not shared with anyone else.

const NameToPosMap& map ( ) const

inline

Return a reference to the name-to-position map.

size_t memUsage ( ) const

Return the number of bytes of memory used by this attribute set.

size_t memUsage ( ) const

Return the number of bytes of memory used by this attribute set.

bool operator!= ( const AttributeSet & other ) const

inline

bool operator!= ( const Descriptor & rhs ) const

inline

Return true if this descriptor is not equal to the given one.

AttributeSet& operator= ( const AttributeSet & )

delete

Disallow copy assignment, since it wouldn't be obvious whether the copy is deep or shallow.

bool operator== ( const AttributeSet & other ) const

Compare the descriptors and attribute arrays on the attribute sets Exit early if the descriptors do not match

bool operator== ( const Descriptor & ) const

Return true if this descriptor is equal to the given one.

static void parseNames	(	std::vector< std::string > &	includeNames,
		std::vector< std::string > &	excludeNames,
		bool &	includeAll,
		const std::string &	nameStr
	)

static

Extract each name from nameStr into includeNames, or into excludeNames if the name is prefixed with a caret.

Parameters

nameStr	the input string of names
includeNames	on exit, the list of names that are not prefixed with a caret
excludeNames	on exit, the list of names that are prefixed with a caret
includeAll	on exit, `true` if a "" wildcard is present in the includeNames*

static void parseNames	(	std::vector< std::string > &	includeNames,
		std::vector< std::string > &	excludeNames,
		const std::string &	nameStr
	)

static

Extract each name from nameStr into includeNames, or into excludeNames if the name is prefixed with a caret.

void pruneUnusedDefaultValues ( )

void read ( std::istream & )

Read the entire set from a stream.

void read ( std::istream & )

Unserialize this transform from the given stream.

void readAttributes ( std::istream & )

This will read the attribute data from a stream.

void readDescriptor ( std::istream & )

This will read the attribute descriptor from a stream.

void readMetadata ( std::istream & )

This will read the attribute metadata from a stream.

AttributeArray::Ptr removeAttribute ( const Name & name )

Remove and return an attribute array by name.

Parameters

name	the name of the attribute array to release

Detaches the attribute array from this attribute set and returns it, if name is invalid, returns an empty shared pointer. This also updates the descriptor to remove the reference to the attribute array.

Note: AttributeArrays are stored as shared pointers, so they are not guaranteed to be unique. Check the reference count before blindly re-using in a new AttributeSet.

AttributeArray::Ptr removeAttribute ( const size_t pos )

Remove and return an attribute array by index.

Parameters

pos	the position index of the attribute to release

Detaches the attribute array from this attribute set and returns it, if pos is invalid, returns an empty shared pointer. This also updates the descriptor to remove the reference to the attribute array.

Note: AttributeArrays are stored as shared pointers, so they are not guaranteed to be unique. Check the reference count before blindly re-using in a new AttributeSet.

AttributeArray::Ptr removeAttributeUnsafe ( const size_t pos )

Remove and return an attribute array by index (unsafe method)

Parameters

pos	the position index of the attribute to release

Detaches the attribute array from this attribute set and returns it, if pos is invalid, returns an empty shared pointer. In cases where the AttributeSet is due to be destroyed, a small performance advantage can be gained by leaving the attribute array as a nullptr and not updating the descriptor. However, this leaves the AttributeSet in an invalid state making it unsafe to call any methods that implicitly derefence the attribute array.

Note: AttributeArrays are stored as shared pointers, so they are not guaranteed to be unique. Check the reference count before blindly re-using in a new AttributeSet.

Warning: Only use this method if you're an expert and know the risks of not updating the array of attributes or the descriptor.

void removeDefaultValue ( const Name & name )

size_t rename	(	const std::string &	fromName,
		const std::string &	toName
	)

Rename an attribute array.

void renameAttributes	(	const Descriptor &	expected,
		const DescriptorPtr &	replacement
	)

Re-name attributes in set to match a provided descriptor Replaces own descriptor with replacement

size_t renameGroup	(	const std::string &	fromName,
		const std::string &	toName
	)

Rename a group.

void reorderAttributes ( const DescriptorPtr & replacement )

Re order attribute set to match a provided descriptor Replaces own descriptor with replacement

size_t replace	(	const std::string &	name,
		const AttributeArray::Ptr &
	)

Replace the attribute array whose name is name.

Returns: The position of the updated attribute array or INVALID_POS if the given name does not exist or if the replacement failed because the new array type does not comply with the descriptor.

size_t replace	(	size_t	pos,
		const AttributeArray::Ptr &
	)

Replace the attribute array stored at position pos in this container.

Returns: The position of the updated attribute array or INVALID_POS if replacement failed because the new array type does not comply with the descriptor.

bool requiresGroupMove	(	Name &	sourceName,
		size_t &	sourceOffset,
		size_t &	targetOffset
	)		const

Determine if a move is required to efficiently compact the data and store the source name, offset and the target offset in the input parameters.

Parameters

sourceName	source name
sourceOffset	source offset
targetOffset	target offset

Returns: true if move is required to compact the data

void resetDescriptor	(	const DescriptorPtr &	replacement,
		const bool	allowMismatchingDescriptors = `false`
	)

Replace the current descriptor with a replacement Note the provided Descriptor must be identical to the replacement unless allowMismatchingDescriptors is true (default is false)

void setDefaultValue	(	const Name &	name,
		const Metadata &	defaultValue
	)

Set a default value for an existing attribute.

void setGroup	(	const Name &	group,
		const size_t	offset,
		const bool	checkValidOffset = `false`
	)

Define a group name to offset mapping.

Parameters

group	group name
offset	group offset
checkValidOffset	throws if offset out-of-range or in-use

size_t size ( ) const

inline

Return the number of attributes in this set.

size_t size ( ) const

inline

Return the number of attributes in this descriptor.

const NamePair& type ( size_t pos ) const

Return the name of the attribute array's type.

const Name uniqueGroupName ( const Name & name ) const

Return a unique name for a group based on given name.

const Name uniqueName ( const Name & name ) const

Return a unique name for an attribute array based on given name.

size_t unusedGroupOffset ( size_t hint = std::numeric_limits< size_t >::max() ) const

Return a group offset that is not in use.

Parameters

hint	if provided, request a specific offset as a hint

Returns: index of an offset or size_t max if no available group offsets

size_t unusedGroups ( ) const

Return the number of empty group slots which correlates to the number of groups that can be stored without increasing the number of group attribute arrays

static bool validName ( const Name & name )

static

Return true if the name is valid.

const Name& valueType ( size_t pos ) const

Return the name of the attribute array's type.

void write	(	std::ostream &	,
		bool	outputTransient = `false`
	)		const

Write the entire set to a stream.

Parameters

outputTransient if true, write out transient attributes

void write ( std::ostream & ) const

Serialize this descriptor to the given stream.

void writeAttributes	(	std::ostream &	,
		bool	outputTransient = `false`
	)		const

This will write the attribute data to a stream.

Parameters

outputTransient if true, write out transient attributes

void writeDescriptor	(	std::ostream &	,
		bool	outputTransient = `false`
	)		const

This will write the attribute descriptor to a stream.

Parameters

outputTransient if true, write out transient attributes

void writeMetadata	(	std::ostream &	,
		bool	outputTransient = `false`,
		bool	paged = `false`
	)		const

This will write the attribute metadata to a stream.

Parameters

outputTransient	if true, write out transient attributes
paged	if true, data is written out in pages

Friends And Related Function Documentation

friend class ::TestAttributeSet

friend

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