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UsdTyped Class Reference

The base class for all typed schemas (those that can impart a typeName to a UsdPrim), and therefore the base class for all instantiable and "IsA" schemas. More...

+ Inheritance diagram for UsdTyped:

Public Member Functions

 UsdTyped (const UsdPrim &prim=UsdPrim())
 Construct a UsdTyped on UsdPrim prim . More...
 
 UsdTyped (const UsdSchemaBase &schemaObj)
 Construct a UsdTyped on the prim wrapped by schemaObj . More...
 
- Public Member Functions inherited from UsdSchemaBase
bool IsConcrete () const
 Returns whether or not this class corresponds to a concrete instantiable prim type in scene description. More...
 
bool IsTyped () const
 Returns whether or not this class inherits from UsdTyped. More...
 
bool IsAPISchema () const
 Returns whether this is an API schema or not. More...
 
bool IsAppliedAPISchema () const
 Returns whether this is an applied API schema or not. More...
 
bool IsMultipleApplyAPISchema () const
 Returns whether this is an applied API schema or not. More...
 
UsdSchemaType GetSchemaType () const
 
USD_API UsdSchemaBase (const UsdPrim &prim=UsdPrim())
 Construct and store prim as the held prim. More...
 
USD_API UsdSchemaBase (const UsdSchemaBase &otherSchema)
 Construct and store for the same prim held by otherSchema. More...
 
virtual USD_API ~UsdSchemaBase ()
 Destructor. More...
 
USD_API operator bool () const
 Return true if this schema object is compatible with its held prim, false otherwise. More...
 
UsdPrim GetPrim () const
 Return this schema object's held prim. More...
 
SdfPath GetPath () const
 Shorthand for GetPrim()->GetPath(). More...
 
USD_API SdfPrimSpecHandle GetSchemaClassPrimDefinition () const
 Return the prim definition associated with this schema instance if one exists, otherwise return null. More...
 

Static Public Member Functions

static const TfTokenVectorGetSchemaAttributeNames (bool includeInherited=true)
 Return a vector of names of all pre-declared attributes for this schema class and all its ancestor classes. More...
 
static USD_API UsdTyped Get (const UsdStagePtr &stage, const SdfPath &path)
 Return a UsdTyped holding the prim adhering to this schema at path on stage. More...
 
- Static Public Member Functions inherited from UsdSchemaBase
static const TfTokenVectorGetSchemaAttributeNames (bool includeInherited=true)
 

Static Public Attributes

static const UsdSchemaType schemaType = UsdSchemaType::AbstractBase
 Compile time constant representing what kind of schema this class is. More...
 
- Static Public Attributes inherited from UsdSchemaBase
static const UsdSchemaType schemaType = UsdSchemaType::AbstractBase
 Compile time constant representing what kind of schema this class is. More...
 

Protected Member Functions

USD_API bool _IsCompatible () const override
 Subclasses may override _IsCompatible to do specific compatibility checking with the given prim, such as type compatibility or value compatibility. More...
 
- Protected Member Functions inherited from UsdSchemaBase
virtual UsdSchemaType _GetSchemaType () const
 Returns the type of schema this class is. More...
 
const TfType_GetType () const
 
USD_API UsdAttribute _CreateAttr (TfToken const &attrName, SdfValueTypeName const &typeName, bool custom, SdfVariability variability, VtValue const &defaultValue, bool writeSparsely) const
 

Detailed Description

The base class for all typed schemas (those that can impart a typeName to a UsdPrim), and therefore the base class for all instantiable and "IsA" schemas.

UsdTyped implements a typeName-based query for its override of UsdSchemaBase::_IsCompatible(). It provides no other behavior.

Definition at line 47 of file typed.h.

Constructor & Destructor Documentation

UsdTyped ( const UsdPrim prim = UsdPrim())
inlineexplicit

Construct a UsdTyped on UsdPrim prim .

Equivalent to UsdTyped::Get(prim.GetStage(), prim.GetPath()) for a valid prim, but will not immediately throw an error for an invalid prim

Definition at line 59 of file typed.h.

UsdTyped ( const UsdSchemaBase schemaObj)
inlineexplicit

Construct a UsdTyped on the prim wrapped by schemaObj .

Should be preferred over UsdTyped(schemaObj.GetPrim()), as it preserves SchemaBase state.

Definition at line 67 of file typed.h.

Member Function Documentation

USD_API bool _IsCompatible ( ) const
overrideprotectedvirtual

Subclasses may override _IsCompatible to do specific compatibility checking with the given prim, such as type compatibility or value compatibility.

This check is performed when clients invoke the explicit bool operator.

Reimplemented from UsdSchemaBase.

static USD_API UsdTyped Get ( const UsdStagePtr &  stage,
const SdfPath path 
)
static

Return a UsdTyped holding the prim adhering to this schema at path on stage.

If no prim exists at path on stage, or if the prim at that path does not adhere to this schema, return an invalid schema object. This is shorthand for the following:

* UsdTyped(stage->GetPrimAtPath(path));
*
static const TfTokenVector& GetSchemaAttributeNames ( bool  includeInherited = true)
inlinestatic

Return a vector of names of all pre-declared attributes for this schema class and all its ancestor classes.

Does not include attributes that may be authored by custom/extended methods of the schemas involved.

Definition at line 79 of file typed.h.

Member Data Documentation

const UsdSchemaType schemaType = UsdSchemaType::AbstractBase
static

Compile time constant representing what kind of schema this class is.

See Also
UsdSchemaType in usd/common.h

Definition at line 53 of file typed.h.


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