xsdata.analyzer module¶
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class
xsdata.analyzer.
ClassAnalyzer
(processed=<factory>, class_index=<factory>, substitutions_index=<factory>)[source]¶ Bases:
xsdata.utils.codegen.ClassUtils
Class analyzer is responsible to minize the final classes footprint by merging and flattening extensions and attributes.
Also promotes the classes necessary for generation and demotes the classes to be used as common types for future runs.
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processed
: List = None¶
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class_index
: Dict[QName, List[Class]] = None¶
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substitutions_index
: Dict[QName, List[Attr]] = None¶
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process
(classes)[source]¶ Process class list in steps.
- Steps:
Merge redefined classes
Create a class index
Create a substitution index
Mark as abstract classes with the same qname
Flatten classes
Return a final class list for code generators.
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fetch_classes_for_generation
()[source]¶ Return the qualified classes to continue for code generation. Return all if there are not primary classes.
- Qualifications:
not an abstract
type: element | complexType | simpleType with enumerations
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create_substitutions_index
(classes)[source]¶ Create reference attributes for all the classes substitutions and group them by their fully qualified name.
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mark_abstract_duplicate_classes
()[source]¶ Search for groups with more than one class and mark as abstract any complex type with the same name as an element.
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flatten_class
(target)[source]¶ Simplify class footprint by flattening class extensions, attributes and inner classes.
- Steps:
Merge enum unions
Expand attribute groups
Copy extensions attributes
Flatten attribute types
Merge duplicate attributes
Unset sequential attributes
Flatten inner classes
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flatten_extension
(target, extension)[source]¶ Remove if possible the given extension for the target class.
If extension type is xsd native and target is not enumeration create a default value attribute otherwise delegate the task to the responsible handler based on the extension source type complex or simple.
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flatten_extension_simple
(source, target, ext)[source]¶ Simple flatten extension handler for common classes eg SimpleType, Restriction.
- Steps:
If target is source: drop the extension.
If source is enumeration and target isn’t create default value attribute.
If both source and target are enumerations copy all attributes.
If both source and target are not enumerations copy all attributes.
If target is enumeration: drop the extension.
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flatten_extension_complex
(source, target, ext)[source]¶ Complex flatten extension handler for primary classes eg ComplexType, Element.
- Steps:
If source includes all target attributes: drop the extension
If source includes some of the target attributes copy attributes
If source depends on target class copy all attributes
Otherwise maintain the extension.
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expand_attribute_group
(target, attr)[source]¶ Expand a group attribute with the source class attributes.
Clone the attributes and apply the group restrictions as well.
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flatten_attribute_types
(target, attr)[source]¶ Flatten attribute types by using the source attribute type.
- Steps:
Skip xsd native types
Detect circular references if no source is found
Skip enumeration types
Overwrite attribute type from source
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add_substitution_attrs
(target, attr)[source]¶ Find all the substitution attributes for the given attribute and add them to the target class.
Exclude enumerations and wildcard attributes.
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