NullPointerException in AbstractField.annotateReference():188

[Tomas-Kraus]

The given XSD

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema
	xmlns:xsd="http://www.w3.org/2001/XMLSchema" 	xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" 	xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" 	jaxb:version="2.1"
	jaxb:extensionBindingPrefixes="xjc"
	elementFormDefault="qualified">

	<xsd:annotation>
		<xsd:appinfo>
			<jaxb:globalBindings>
				<xjc:simple />
			</jaxb:globalBindings>
		</xsd:appinfo>
	</xsd:annotation>

	<xsd:complexType name="item">
		<xsd:attribute name="level" type="xsd:integer" use="required">
			<xsd:annotation>
				<xsd:appinfo>
					<jaxb:property>
						<jaxb:baseType name="int" />
					</jaxb:property>
				</xsd:appinfo>
			</xsd:annotation>
		</xsd:attribute>
	</xsd:complexType>

	<xsd:element name="comment" type="markup" />

	<xsd:complexType name="markup" mixed="true">
		<xsd:annotation>
			<xsd:appinfo>
				<jaxb:class name="Style" />
			</xsd:appinfo>
		</xsd:annotation>
		<xsd:sequence>
			<xsd:element ref="comment" />
		</xsd:sequence>
	</xsd:complexType>
</xsd:schema>

when compiled with XJC v2.2.11 (also tried v2.2.4 and v2.2.8) causes NPE:

D:\jaxb-ri\bin\xjc.bat -extension test.xsd

parsing a schema...
[WARNING] Cannot generate default value for primitive type "int".
  line 19 of file:/D:/test.xsd

compiling a schema...
Exception in thread "main" java.lang.NullPointerException
	at com.sun.tools.xjc.generator.bean.field.AbstractField.annotateReference(AbstractField.java:188)
	at com.sun.tools.xjc.generator.bean.field.AbstractField.annotate(AbstractField.java:161)
	at com.sun.tools.xjc.generator.bean.field.AbstractListField.generate(AbstractListField.java:129)
	at com.sun.tools.xjc.generator.bean.field.UntypedListField.<init>(UntypedListField.java:112)
	at com.sun.tools.xjc.generator.bean.field.UntypedListFieldRenderer.generate(UntypedListFieldRenderer.java:77)
	at com.sun.tools.xjc.generator.bean.field.DefaultFieldRenderer.generate(DefaultFieldRenderer.java:82)
	at com.sun.tools.xjc.generator.bean.BeanGenerator.generateFieldDecl(BeanGenerator.java:777)
	at com.sun.tools.xjc.generator.bean.BeanGenerator.generateClassBody(BeanGenerator.java:558)
	at com.sun.tools.xjc.generator.bean.BeanGenerator.<init>(BeanGenerator.java:261)
	at com.sun.tools.xjc.generator.bean.BeanGenerator.generate(BeanGenerator.java:169)
	at com.sun.tools.xjc.model.Model.generateCode(Model.java:288)
	at com.sun.tools.xjc.Driver.run(Driver.java:384)
	at com.sun.tools.xjc.Driver.run(Driver.java:221)
	at com.sun.tools.xjc.Driver._main(Driver.java:144)
	at com.sun.tools.xjc.Driver.access$000(Driver.java:82)
	at com.sun.tools.xjc.Driver$1.run(Driver.java:103)

Affected Versions

[2.2.11]

[Tomas-Kraus]

• Issue Imported From: https://github.com/javaee/jaxb-v2/issues/1108
• Original Issue Raised By:@glassfishrobot
• Original Issue Assigned To: @glassfishrobot

[Tomas-Kraus]

@glassfishrobot Commented Reported by dma_k

[Tomas-Kraus]

@glassfishrobot Commented dma_k said: Actually the problematic XSD is simpler:

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema
	xmlns:xsd="http://www.w3.org/2001/XMLSchema" 	xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" 	xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc" 	jaxb:version="2.1"
	jaxb:extensionBindingPrefixes="xjc"
	elementFormDefault="qualified">

	<xsd:annotation>
		<xsd:appinfo>
			<jaxb:globalBindings>
				<xjc:simple />
			</jaxb:globalBindings>
		</xsd:appinfo>
	</xsd:annotation>

	<xsd:element name="comment" type="markup" />

	<xsd:complexType name="markup" mixed="true">
		<xsd:annotation>
			<xsd:appinfo>
				<jaxb:class name="Style" />
			</xsd:appinfo>
		</xsd:annotation>
		<xsd:sequence>
			<xsd:element ref="comment" />
		</xsd:sequence>
	</xsd:complexType>
</xsd:schema>

which means that problem occurs when there is a circular dependency in the type and type class name is customized.

[Tomas-Kraus]

@glassfishrobot Commented Was assigned to yaroska

[Tomas-Kraus]

@glassfishrobot Commented This issue was imported from java.net JIRA JAXB-1108

[laurentschoelens]

Problem still occurs on latest version of XJC (4.0.4-SNAPSHOT tested)

Caused by: java.lang.NullPointerException: Cannot invoke "javax.xml.namespace.QName.getLocalPart()" because the return value of "com.sun.tools.xjc.model.CElement.getElementName()" is null
    at com.sun.tools.xjc.generator.bean.field.AbstractField.annotateReference (AbstractField.java:163)
    at com.sun.tools.xjc.generator.bean.field.AbstractField.annotate (AbstractField.java:136)
    at com.sun.tools.xjc.generator.bean.field.AbstractListField.generate (AbstractListField.java:105)
    at com.sun.tools.xjc.generator.bean.field.UntypedListField.<init> (UntypedListField.java:83)
    at com.sun.tools.xjc.generator.bean.field.UntypedListFieldRenderer.generate (UntypedListFieldRenderer.java:48)

[laurentschoelens]

The problematic part is the following customization :

<xsd:annotation>
  <xsd:appinfo>
    <jaxb:class name="Style" />
  </xsd:appinfo>
</xsd:annotation>