Node Class Reference

A node element within a NodeGraph or Document. More...

#include <Node.h>

Inheritance diagram for Node:

Public Member Functions
	Node (ElementPtr parent, const string &name)
Connections
void	setConnectedNode (const string &inputName, ConstNodePtr node)
	Set the node to which the given input is connected, creating a child input if needed. More...
NodePtr	getConnectedNode (const string &inputName) const
	Return the Node connected to the given input. More...
void	setConnectedNodeName (const string &inputName, const string &nodeName)
	Set the name of the Node connected to the given input, creating a child element for the input if needed.
string	getConnectedNodeName (const string &inputName) const
	Return the name of the Node connected to the given input. More...
NodeDef References
NodeDefPtr	getNodeDef (const string &target=EMPTY_STRING, bool allowRoughMatch=false) const
	Return the first NodeDef that declares this node, optionally filtered by the given target name. More...
Implementation References
InterfaceElementPtr	getImplementation (const string &target=EMPTY_STRING) const
	Return the first implementation for this node, optionally filtered by the given target and language names. More...
Traversal
Edge	getUpstreamEdge (size_t index=0) const override
	Return the Edge with the given index that lies directly upstream from this element in the dataflow graph. More...
size_t	getUpstreamEdgeCount () const override
	Return the number of queriable upstream edges for this element. More...
OutputPtr	getNodeDefOutput (ElementPtr connectingElement)
	Given a connecting element (Input or Output) return the NodeDef output corresponding to the output the element is connected to. More...
vector< PortElementPtr >	getDownstreamPorts () const
	Return a vector of all downstream ports that connect to this node, ordered by the names of the port elements.
Utility
ConstInterfaceElementPtr	getDeclaration (const string &target=EMPTY_STRING) const override
	Return the first declaration of this interface, optionally filtered by the given target name. More...
InputPtr	addInputFromNodeDef (const string &inputName)
	Add an input based on the corresponding input for the associated node definition. More...
void	addInputsFromNodeDef ()
	Add inputs based on the corresponding associated node definition.
Validation
bool	validate (string *message=nullptr) const override
	Validate that the given element tree, including all descendants, is consistent with the MaterialX specification. More...
Public Member Functions inherited from InterfaceElement
void	setNodeDefString (const string &nodeDef)
	Set the NodeDef string for the interface.
bool	hasNodeDefString () const
	Return true if the given interface has a NodeDef string.
const string &	getNodeDefString () const
	Return the NodeDef string for the interface.
InputPtr	addInput (const string &name=EMPTY_STRING, const string &type=DEFAULT_TYPE_STRING)
	Add an Input to this interface. More...
InputPtr	getInput (const string &name) const
	Return the Input, if any, with the given name.
vector< InputPtr >	getInputs () const
	Return a vector of all Input elements.
size_t	getInputCount () const
	Return the number of Input elements.
void	removeInput (const string &name)
	Remove the Input, if any, with the given name.
InputPtr	getActiveInput (const string &name) const
	Return the first Input with the given name that belongs to this interface, taking interface inheritance into account.
vector< InputPtr >	getActiveInputs () const
	Return a vector of all Input elements that belong to this interface, taking inheritance into account.
OutputPtr	addOutput (const string &name=EMPTY_STRING, const string &type=DEFAULT_TYPE_STRING)
	Add an Output to this interface. More...
OutputPtr	getOutput (const string &name) const
	Return the Output, if any, with the given name.
vector< OutputPtr >	getOutputs () const
	Return a vector of all Output elements.
size_t	getOutputCount () const
	Return the number of Output elements.
void	removeOutput (const string &name)
	Remove the Output, if any, with the given name.
OutputPtr	getActiveOutput (const string &name) const
	Return the first Output with the given name that belongs to this interface, taking interface inheritance into account.
vector< OutputPtr >	getActiveOutputs () const
	Return a vector of all Output elements that belong to this interface, taking inheritance into account.
void	setConnectedOutput (const string &inputName, OutputPtr output)
	Set the output to which the given input is connected, creating a child input if needed. More...
OutputPtr	getConnectedOutput (const string &inputName) const
	Return the output connected to the given input. More...
TokenPtr	addToken (const string &name=EMPTY_STRING)
	Add a Token to this interface. More...
TokenPtr	getToken (const string &name) const
	Return the Token, if any, with the given name.
vector< TokenPtr >	getTokens () const
	Return a vector of all Token elements.
void	removeToken (const string &name)
	Remove the Token, if any, with the given name.
TokenPtr	getActiveToken (const string &name) const
	Return the first Token with the given name that belongs to this interface, taking interface inheritance into account.
vector< TokenPtr >	getActiveTokens () const
	Return a vector of all Token elements that belong to this interface, taking inheritance into account.
ValueElementPtr	getValueElement (const string &name) const
	Return the ValueElement, if any, with the given name.
ValueElementPtr	getActiveValueElement (const string &name) const
	Return the first value element with the given name that belongs to this interface, taking interface inheritance into account. More...
vector< ValueElementPtr >	getActiveValueElements () const
	Return a vector of all value elements that belong to this interface, taking inheritance into account. More...
template<class T >
InputPtr	setInputValue (const string &name, const T &value, const string &type=EMPTY_STRING)
	Set the typed value of an input by its name, creating a child element to hold the input if needed.
ValuePtr	getInputValue (const string &name, const string &target=EMPTY_STRING) const
	Return the typed value of an input by its name, taking both the calling element and its declaration into account. More...
TokenPtr	setTokenValue (const string &name, const string &value)
	Set the string value of a Token by its name, creating a child element to hold the Token if needed.
string	getTokenValue (const string &name)
	Return the string value of a Token by its name, or an empty string if the given Token is not present.
void	setTarget (const string &target)
	Set the target string of this interface.
bool	hasTarget () const
	Return true if the given interface has a target string.
const string &	getTarget () const
	Return the target string of this interface.
void	setVersionString (const string &version)
	Set the version string of this interface.
bool	hasVersionString () const
	Return true if this interface has a version string.
const string &	getVersionString () const
	Return the version string of this interface.
void	setVersionIntegers (int majorVersion, int minorVersion)
	Set the major and minor versions as an integer pair.
virtual std::pair< int, int >	getVersionIntegers () const
	Return the major and minor versions as an integer pair. More...
void	setDefaultVersion (bool defaultVersion)
	Set the default version flag of this element.
bool	getDefaultVersion () const
	Return the default version flag of this element.
void	clearContent () override
	Clear all attributes and descendants from this element. More...
bool	hasExactInputMatch (ConstInterfaceElementPtr declaration, string *message=nullptr) const
	Return true if this instance has an exact input match with the given declaration, where each input of this the instance corresponds to a declaration input of the same name and type. More...
Public Member Functions inherited from TypedElement
void	setType (const string &type)
	Set the element's type string.
bool	hasType () const
	Return true if the given element has a type string.
virtual const string &	getType () const
	Return the element's type string. More...
bool	isColorType () const
	Return true if the element is of color type.
bool	isMultiOutputType () const
	Return true if the element is of multi-output type.
TypeDefPtr	getTypeDef () const
	Return the TypeDef declaring the type string of this element. More...
Public Member Functions inherited from Element
	Element (const Element &)=delete
Element &	operator= (const Element &)=delete
bool	operator== (const Element &rhs) const
	Return true if the given element tree, including all descendants, is identical to this one.
bool	operator!= (const Element &rhs) const
	Return true if the given element tree, including all descendants, differs from this one.
void	setCategory (const string &category)
	Set the element's category string.
const string &	getCategory () const
	Return the element's category string. More...
void	setName (const string &name)
	Set the element's name string. More...
const string &	getName () const
	Return the element's name string.
string	getNamePath (ConstElementPtr relativeTo=nullptr) const
	Return the element's hierarchical name path, relative to the root document. More...
ElementPtr	getDescendant (const string &namePath) const
	Return the element specified by the given hierarchical name path, relative to the current element. More...
void	setFilePrefix (const string &prefix)
	Set the element's file prefix string.
bool	hasFilePrefix () const
	Return true if the given element has a file prefix string.
const string &	getFilePrefix () const
	Return the element's file prefix string.
const string &	getActiveFilePrefix () const
	Return the file prefix string that is active at the scope of this element, taking all ancestor elements into account.
void	setGeomPrefix (const string &prefix)
	Set the element's geom prefix string.
bool	hasGeomPrefix () const
	Return true if the given element has a geom prefix string.
const string &	getGeomPrefix () const
	Return the element's geom prefix string.
const string &	getActiveGeomPrefix () const
	Return the geom prefix string that is active at the scope of this element, taking all ancestor elements into account.
void	setColorSpace (const string &colorSpace)
	Set the element's color space string.
bool	hasColorSpace () const
	Return true if the given element has a color space string.
const string &	getColorSpace () const
	Return the element's color space string.
const string &	getActiveColorSpace () const
	Return the color space string that is active at the scope of this element, taking all ancestor elements into account.
void	setInheritString (const string &inherit)
	Set the inherit string of this element.
bool	hasInheritString () const
	Return true if this element has an inherit string.
const string &	getInheritString () const
	Return the inherit string of this element.
void	setInheritsFrom (ConstElementPtr super)
	Set the element that this one directly inherits from.
ElementPtr	getInheritsFrom () const
	Return the element, if any, that this one directly inherits from.
bool	hasInheritedBase (ConstElementPtr base) const
	Return true if this element has the given element as an inherited base, taking the full inheritance chain into account.
bool	hasInheritanceCycle () const
	Return true if the inheritance chain for this element contains a cycle.
void	setNamespace (const string &space)
	Set the namespace string of this element.
bool	hasNamespace () const
	Return true if this element has a namespace string.
const string &	getNamespace () const
	Return the namespace string of this element.
string	getQualifiedName (const string &name) const
	Return a qualified version of the given name, taking the namespace at the scope of this element into account.
void	setDocString (const string &doc)
	Set the documentation string of this element.
string	getDocString () const
	Return the documentation string of this element.
template<class T >
bool	isA (const string &category=EMPTY_STRING) const
	Return true if this element belongs to the given subclass. More...
template<class T >
shared_ptr< T >	asA ()
	Dynamic cast to an instance of the given subclass.
template<class T >
shared_ptr< const T >	asA () const
	Dynamic cast to a const instance of the given subclass.
template<class T >
shared_ptr< T >	addChild (const string &name=EMPTY_STRING)
	Add a child element of the given subclass and name. More...
ElementPtr	addChildOfCategory (const string &category, string name=EMPTY_STRING)
	Add a child element of the given category and name. More...
ElementPtr	changeChildCategory (ElementPtr child, const string &category)
	Change the category of the given child element. More...
ElementPtr	getChild (const string &name) const
	Return the child element, if any, with the given name.
template<class T >
shared_ptr< T >	getChildOfType (const string &name) const
	Return the child element, if any, with the given name and subclass. More...
const vector< ElementPtr > &	getChildren () const
	Return a constant vector of all child elements. More...
template<class T >
vector< shared_ptr< T > >	getChildrenOfType (const string &category=EMPTY_STRING) const
	Return a vector of all child elements that are instances of the given subclass, optionally filtered by the given category string. More...
void	setChildIndex (const string &name, int index)
	Set the index of the child, if any, with the given name. More...
int	getChildIndex (const string &name) const
	Return the index of the child, if any, with the given name. More...
void	removeChild (const string &name)
	Remove the child element, if any, with the given name.
template<class T >
void	removeChildOfType (const string &name)
	Remove the child element, if any, with the given name and subclass. More...
void	setAttribute (const string &attrib, const string &value)
	Set the value string of the given attribute.
bool	hasAttribute (const string &attrib) const
	Return true if the given attribute is present.
const string &	getAttribute (const string &attrib) const
	Return the value string of the given attribute. More...
const StringVec &	getAttributeNames () const
	Return a vector of stored attribute names, in the order they were set.
template<class T >
void	setTypedAttribute (const string &attrib, const T &data)
	Set the value of an implicitly typed attribute. More...
template<class T >
T	getTypedAttribute (const string &attrib) const
	Return the value of an implicitly typed attribute. More...
void	removeAttribute (const string &attrib)
	Remove the given attribute, if present.
ElementPtr	getSelf ()
	Return our self pointer.
ConstElementPtr	getSelf () const
	Return our self pointer.
ElementPtr	getParent ()
	Return our parent element.
ConstElementPtr	getParent () const
	Return our parent element.
ElementPtr	getRoot ()
	Return the root element of our tree.
ConstElementPtr	getRoot () const
	Return the root element of our tree.
DocumentPtr	getDocument ()
	Return the root document of our tree.
ConstDocumentPtr	getDocument () const
	Return the root document of our tree.
template<class T >
shared_ptr< T >	getAncestorOfType ()
	Return the first ancestor of the given subclass, or an empty shared pointer if no ancestor of this subclass is found.
template<class T >
shared_ptr< const T >	getAncestorOfType () const
	Return the first ancestor of the given subclass, or an empty shared pointer if no ancestor of this subclass is found.
TreeIterator	traverseTree () const
	Traverse the tree from the given element to each of its descendants in depth-first order, using pre-order visitation. More...
GraphIterator	traverseGraph () const
	Traverse the dataflow graph from the given element to each of its upstream sources in depth-first order, using pre-order visitation. More...
ElementPtr	getUpstreamElement (size_t index=0) const
	Return the Element with the given index that lies directly upstream from this one in the dataflow graph. More...
InheritanceIterator	traverseInheritance () const
	Traverse the inheritance chain from the given element to each element from which it inherits. More...
void	setSourceUri (const string &sourceUri)
	Set the element's source URI. More...
bool	hasSourceUri () const
	Return true if this element has a source URI.
const string &	getSourceUri () const
	Return the element's source URI.
const string &	getActiveSourceUri () const
	Return the source URI that is active at the scope of this element, taking all ancestor elements into account.
void	copyContentFrom (const ConstElementPtr &source)
	Copy all attributes and descendants from the given element to this one. More...
string	createValidChildName (string name) const
	Using the input name as a starting point, modify it to create a valid, unique name for a child element.
StringResolverPtr	createStringResolver (const string &geom=EMPTY_STRING) const
	Construct a StringResolver at the scope of this element. More...
string	asString () const
	Return a single-line description of this element, including its category, name, and attributes.

Static Public Attributes
static const string	CATEGORY
Static Public Attributes inherited from InterfaceElement
static const string	NODE_DEF_ATTRIBUTE
static const string	TARGET_ATTRIBUTE
static const string	VERSION_ATTRIBUTE
static const string	DEFAULT_VERSION_ATTRIBUTE
Static Public Attributes inherited from TypedElement
static const string	TYPE_ATTRIBUTE
Static Public Attributes inherited from Element
static const string	NAME_ATTRIBUTE
static const string	FILE_PREFIX_ATTRIBUTE
static const string	GEOM_PREFIX_ATTRIBUTE
static const string	COLOR_SPACE_ATTRIBUTE
static const string	INHERIT_ATTRIBUTE
static const string	NAMESPACE_ATTRIBUTE
static const string	DOC_ATTRIBUTE
static const string	XPOS_ATTRIBUTE
static const string	YPOS_ATTRIBUTE

Additional Inherited Members
Protected Types inherited from InterfaceElement
using	NodeDefPtr = shared_ptr< NodeDef >
using	ConstNodeDefPtr = shared_ptr< const NodeDef >
Protected Types inherited from TypedElement
using	TypeDefPtr = shared_ptr< class TypeDef >
Protected Types inherited from Element
using	DocumentPtr = shared_ptr< Document >
using	ConstDocumentPtr = shared_ptr< const Document >
Protected Member Functions inherited from InterfaceElement
	InterfaceElement (ElementPtr parent, const string &category, const string &name)
void	registerChildElement (ElementPtr child) override
void	unregisterChildElement (ElementPtr child) override
Protected Member Functions inherited from TypedElement
	TypedElement (ElementPtr parent, const string &category, const string &name)
Protected Member Functions inherited from Element
	Element (ElementPtr parent, const string &category, const string &name)
template<class T >
shared_ptr< T >	resolveNameReference (const string &name, ConstElementPtr parent=nullptr) const
void	validateRequire (bool expression, bool &res, string *message, const string &errorDesc) const
virtual void	registerChildElement (ElementPtr child)
virtual void	unregisterChildElement (ElementPtr child)
ElementPtr	getSelfNonConst () const
Protected Attributes inherited from Element
string	_category
string	_name
string	_sourceUri
ElementMap	_childMap
vector< ElementPtr >	_childOrder
StringMap	_attributeMap
StringVec	_attributeOrder
weak_ptr< Element >	_parent
weak_ptr< Element >	_root

Detailed Description

A node element within a NodeGraph or Document.

A Node represents an instance of a NodeDef within a graph, and its Input elements apply specific values and connections to that instance.

Member Function Documentation

addInputFromNodeDef()

InputPtr addInputFromNodeDef

(

const string &

inputName

)

Add an input based on the corresponding input for the associated node definition.

If the input already exists on the node it will just be returned.

getConnectedNode()

NodePtr getConnectedNode

(

const string &

inputName

)

const

Return the Node connected to the given input.

If the given input is not present, then an empty NodePtr is returned.

getConnectedNodeName()

string getConnectedNodeName

(

const string &

inputName

)

const

Return the name of the Node connected to the given input.

If the given input is not present, then an empty string is returned.

getDeclaration()

ConstInterfaceElementPtr getDeclaration ( const string &  target = EMPTY_STRING ) const

inlineoverridevirtual

Return the first declaration of this interface, optionally filtered by the given target name.

Reimplemented from InterfaceElement.

getImplementation()

InterfaceElementPtr getImplementation ( const string &  target = EMPTY_STRING ) const

inline

Return the first implementation for this node, optionally filtered by the given target and language names.

Parameters

target

An optional target name, which will be used to filter the implementations that are considered.

Returns

An implementation for this node, or an empty shared pointer if none was found. Note that a node implementation may be either an Implementation element or a NodeGraph element.

getNodeDef()

NodeDefPtr getNodeDef	(	const string &	target = EMPTY_STRING,
		bool	allowRoughMatch = false
	)		const

Return the first NodeDef that declares this node, optionally filtered by the given target name.

Parameters

target	An optional target name, which will be used to filter the nodedefs that are considered.
allowRoughMatch	If specified, then a rough match will be allowed when an exact match is not found. An exact match requires that each node input corresponds to a nodedef input of the same name and type.

Returns

A NodeDef for this node, or an empty shared pointer if none was found.

getNodeDefOutput()

OutputPtr getNodeDefOutput

(

ElementPtr

connectingElement

)

Given a connecting element (Input or Output) return the NodeDef output corresponding to the output the element is connected to.

This is only valid if the NodeDef has explicit outputs defined, e.g. multiple outputs or an explicitly named output. If this is not the case, nullptr is returned, which implies the node is a standard node with a single implicit output.

getUpstreamEdge()

Edge getUpstreamEdge ( size_t  index = 0 ) const

overridevirtual

Return the Edge with the given index that lies directly upstream from this element in the dataflow graph.

Reimplemented from Element.

getUpstreamEdgeCount()

size_t getUpstreamEdgeCount ( ) const

inlineoverridevirtual

Return the number of queriable upstream edges for this element.

Reimplemented from Element.

setConnectedNode()

void setConnectedNode	(	const string &	inputName,
		ConstNodePtr	node
	)

Set the node to which the given input is connected, creating a child input if needed.

If the node argument is null, then any existing node connection on the input will be cleared.

validate()

bool validate ( string *  message = nullptr ) const

overridevirtual

Validate that the given element tree, including all descendants, is consistent with the MaterialX specification.

Reimplemented from Element.

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

• source/MaterialXCore/Node.h