JAXB - Named Complex Type is converted to Java content interface

[Rajani Gummadi]

Hi All,

I read somewhere about JAXB binding rules, which says that a Named complex type is mapped toa java content interface. I have taken the xsd from Ivan's notes as below

<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
		xmlns:ivan="http://www.ivan.com/schemas"
		targetNamespace="http://www.ivan.com/schemas"
		attributeFormDefault="unqualified">
	<element name="kompisRelation" type="ivan:KompisRelation"/>
	<element name="person" type="ivan:Person"/>
	<attribute name="eyeColour" type="string" default="blue"/>
	
	<complexType name="KompisRelation">
		<sequence>
			<element name="person" type="ivan:Person"/>
			<element name="friend" type="ivan:Person" minOccurs="0" maxOccurs="unbounded" nillable="false"/>
		</sequence>
		<attribute name="degree" type="string" use="optional" default="acquaintance"/>
	</complexType>
	
	<complexType name="Person">
		<sequence>
			<element name="firstName" type="string" nillable="false"/>
			<element name="lastName" type="string" nillable="false"/>
			<element name="age" type="int"/>
			<element name="favColour" type="string" minOccurs="0" maxOccurs="unbounded"/>
		</sequence>
		<attribute ref="ivan:eyeColour"/>
		<attribute name="hasDog" type="boolean"/>
	</complexType>
</schema>

Here both Person and KompisRelation are complex types, but when I ran xjc against this schema I do see four java files generated

1) ObjectFactory.java 2) KompisRelation.java 3)Person.java 4) package-info.java

But none of these are actually any interfaces. Am I missing anything here ?

Also, I see this table, what is Java content interface and what is Java element interface

[Ivan Krizsan]

Hi!
I think the difference is in how the generated classes are annotated with JAXB annotations.
Try modifying the XML schema as to contain a complex type that has no corresponding global element type and generate JAXB classes.
Then examine the annotations on the different classes.
Best wishes!