[
https://issues.apache.org/jira/browse/CXF-5509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Bright Zheng updated CXF-5509:
------------------------------
Attachment: learning-spring_cxf.zip
I attached a full sample project for your review purpose.
The major point could be demonstrated as below:
{code:java}
public class People<T extends Person> {
public People(){}
//It doesn't work in Apache CXF if using T[]
/**
* Nested in org.springframework.beans.factory.BeanCreationException:
* ...
* Error creating bean with name 'personService': Invocation of init method
failed;
* nested exception is javax.xml.ws.WebServiceException:
java.lang.NullPointerException:
* java.lang.NullPointerException
* at java.lang.reflect.Array.newArray(Native Method)
* at java.lang.reflect.Array.newInstance(Array.java:52)
* at
org.apache.cxf.aegis.type.TypeUtil.getTypeRelatedClass(TypeUtil.java:259)
* ...
*/
private T[] persons;
public T[] getPersons() {
return persons;
}
public void setPersons(T[] persons) {
this.persons = persons;
}
@SuppressWarnings("unchecked")
public void addPerson(T person) {
List<T> _persons = new ArrayList<T>();
if(this.persons==null){
this.persons =
(T[])Array.newInstance(person.getClass(), 1);
}else{
for(T _person: this.persons){
_persons.add(_person);
}
this.persons =
(T[])Array.newInstance(person.getClass(), this.persons.length + 1);
}
_persons.add(person);
_persons.toArray(this.persons);
}
//It works well if using List<T> like below
/*
private List<T> persons = new ArrayList<T>();
public List<T> getPersons() {
return persons;
}
public void setPersons(List<T> persons) {
this.persons = persons;
}
public void addPerson(T person){
persons.add(person);
}*/
}
{code}
> NullPointerException if class with generic-array parameters is set to
> rootClassNames
> ------------------------------------------------------------------------------------
>
> Key: CXF-5509
> URL: https://issues.apache.org/jira/browse/CXF-5509
> Project: CXF
> Issue Type: Bug
> Components: Aegis Databinding
> Affects Versions: 2.7.8
> Environment: RHEL6.3 (64b), JDK1.6, Spring 3.0.6, CXF 2.7.8
> Reporter: Bright Zheng
> Labels: NPE, aegis, binding, cxf, generic
> Attachments: learning-spring_cxf.zip
>
>
> I want to expose a set of classes by setting the aegisContext:
> {code:xml}
> <bean id="aegisContext" class="org.apache.cxf.aegis.AegisContext"
> scope="prototype">
> <property name="writeXsiTypes" value="true"/>
> <property name="rootClassNames">
> <ref bean="bindingList"/>
> </property>
> </bean>
> {code}
> One of the class in the list is as a response pojo which has generic-array
> field like:
> {code:java}
> public class Subject<T extends Score>{
> ...
> private T[] score;
> //and getter/setter also
> ...
> {code}
> During the deployment phase, while debugging with the CXF code, I found that
> below codes in TypeUtil.java under cxf-rt-databinding-aegis-2.7.8.jar will
> case issue:
> {code:java}
> public static Class<?> getTypeRelatedClass(Type type) {
> Class<?> directClass = getTypeClass(type, false);
> if (directClass != null) {
> return directClass;
> }
>
> if (type instanceof ParameterizedType) {
> ParameterizedType pType = (ParameterizedType) type;
> return getTypeRelatedClass(pType.getRawType());
> }
>
> if (type instanceof GenericArrayType) {
> GenericArrayType gat = (GenericArrayType) type;
> Type compType = gat.getGenericComponentType();
> Class<?> arrayBaseType = getTypeRelatedClass(compType);
> // believe it or not, this seems to be the only way to get the
> // Class object for an array of primitive type.
> Object instance = Array.newInstance(arrayBaseType, 0);
> return instance.getClass();
> }
> return null;
> }
> {code}
> {color:red}
> Note: the arrayBaseType will always be null while initializing that class so
> it will cause the next line of code NPE!!
> {color}
> Did I miss anything for this kind of class mapping while using aegis?
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