remove useless classes in the generated models + use booleans instead of True False enum.

[amal-meer]

I have 2 things that I need to improve to simplify the generated classes from my xsd file. A sample to illustrate the issue:

<?xml version="1.0" encoding="utf-8"?>
	<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
		<xs:element name="Parent">
		<xs:complexType>
			<xs:sequence>
					<xs:element ref="Child1" />
					<xs:element ref="Child2" />
			</xs:sequence>
		</xs:complexType>
	</xs:element>
	<xs:element name="Child1">
		<xs:complexType>
			<xs:attribute name="name" type="xs:string" use="required" />
			<xs:attribute name="id" type="xs:string" use="required" />
			<xs:attribute name="isTrue" type="xs:boolean" use="required" />
		</xs:complexType>
	</xs:element>
	<xs:element name="Child2">
		<xs:complexType>
			<xs:sequence>
				<xs:element minOccurs="0" maxOccurs="1" ref="Name" />
			</xs:sequence>
			<xs:attribute name="id" type="xs:string" use="required" />
			<xs:attribute name="isTrue" use="required">
				<xs:simpleType>
					<xs:restriction base="xs:NMTOKEN">
						<xs:enumeration value="Yes" />
						<xs:enumeration value="No" />
					</xs:restriction>
				</xs:simpleType>
			</xs:attribute>
		</xs:complexType>
	</xs:element>
	<xs:element name="Name" type="xs:string" />
</xs:schema>

Child1 is the ideal schema representation that will result in the needed output, but Child2 is the one that I have.

Problems:

1. The xsd file represents some strings attributes as a sequence of elements that refers to another element.
   Ex: Name in Child2 element. This will results in an unnecessary Name class and I will need to remove it manually.

2. Some attributes are represented as a "Yes" and "No" enum, is there a way to convert such an attribute to boolean? and then parse it from the XML file as True if the value is Yes, and False if the value is No?

[tefra]

The name type is an root level element, by definition those are global types and can appear as standalone

<?xml version="1.0" encoding="UTF-8"?>
<name>foo<name>

Maybe I could add a config option to remove types with no dependencies that are not used anywhere could do the trick here.

For the second on the enumeration extend the xs:NMTOKEN, there is no way to determine that these are actually boolean.

[amal-meer]

Actually for the first one, I generated the output 2 weeks ago with xsdata-22.5 and xsdata-attrs-21.11 using the default config with the following command
xsdata file.xsd --package result.models --output attrs
and it removes the Name class from the generated output with the following warning
warning:: Reset absent type: Name

I tried again yesterday but I couldn't reproduce the same result, I have no idea about the reason.

would appreciate if you could add it as a config option.

[tefra]

The warning:: Reset absent type: Name, refers to when a type reference can't be found, maybe your xsd changed?

[amal-meer]

Never mind, maybe I've commented out some elements.

[amal-meer]

Is there a plan to add this as a config option?

[tefra]

Yeap, it's planned

[tefra]

Hi @amal-meer

I added a new config option to specify the filter strategy

Give it a try

xsdata schema.xsd --filter-strategy referredGlobals

[matteoaletti]

Hello, I don't see this option anymore in v24.3, did I miss something on this topic?
Thank you!

[tefra]

Since v24.3 the generator avoids flattening all root elements and global types, which also removed the filtering strategies.

[matteoaletti]

Thanks for the quick answer, does this new behavior correspond to one of the filter strategies that were available or the current behavior is completely new?

[tefra]

There is no filter strategies anymore, all root elements and complex types are going to be generated.