pyxb.namespace.resolution._Resolvable

Class _Resolvable_mixin

object --+ | cscRoot --+ | _Resolvable_mixin

Mix-in indicating that this object may have references to unseen named components.

This class is mixed-in to those XMLSchema components that have a reference to another component that is identified by a QName. Resolution of that component may need to be delayed if the definition of the component has not yet been read.

Instance Methods

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isResolved(self)
Determine whether this named component is resolved.

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_resolve(self)
Perform whatever steps are required to resolve this component.

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_queueForResolution(self, why=None, depends_on=None)
Short-hand to requeue an object if the class implements _namespaceContext().

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Inherited from cscRoot: __init__

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Variables

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_TraceResolution = False

Properties

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Inherited from object: __class__

isResolved(self)

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Determine whether this named component is resolved.

Override this in the child class.

_resolve(self)

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Perform whatever steps are required to resolve this component.

Resolution is performed in the context of the namespace to which the component belongs. Invoking this method may fail to complete the resolution process if the component itself depends on unresolved components. The sole caller of this should be _NamespaceResolution_mixin.resolveDefinitions.

This method is permitted (nay, encouraged) to raise an exception if resolution requires interpreting a QName and the named component cannot be found.

Override this in the child class. In the prefix, if isResolved is true, return right away. If something prevents you from completing resolution, invoke self._queueForResolution() (so it is retried later) and immediately return self. Prior to leaving after successful resolution discard any cached dom node by setting self.__domNode=None.

Returns:

self, whether or not resolution succeeds.

Raises:

pyxb.SchemaValidationError - if resolution requlres a reference to an unknown component