Hi,
i'm starting using acegi security framework (version 1.0.7) since just few days. I have a problem about my authorization settings: i'm trying to write a custom ObjectDefinitionSource for my test application in order to set specific protections for some beans,because i need to handle roles dynamically (even without DAO or database access,just to store them in memory).I
I realized the following class:

public class MyObjectDefinitionSource extends AbstractFilterInvocationDefinitionSource{

private Map requestMap = new HashMap();

public void init(){
SecurityConfig securityConfig = new SecurityConfig("ROLE_USER_ENABLED");
configDefinition.addConfigAttribute(securityConfig );
addSecureUrl("it.rara.resources.FunctionsTest.sum* ", configDefinition);
}

public void addSecureUrl(String expression, ConfigAttributeDefinition attr) {
this.requestMap.put(expression,attr);
}

public ConfigAttributeDefinition lookupAttributes(String url) {
if(this.requestMap.containsKey(url)){
return (ConfigAttributeDefinition)this.requestMap.get(url );
}
else return null;
}

public Iterator getConfigAttributeDefinitions() {
return this.requestMap.values().iterator();
}

}

and here's the mapping in the acegi-security.xml:

<bean id="autoProxyCreator" class="org.springframework.aop.framework.autoproxy .BeanNameAutoProxyCreator">
<property name='interceptorNames'>
<list>
<value>methodSecurityInterceptor</value>
</list>
</property>
<property name="beanNames">
<list>
<value>functionsImpl</value>
</list>
</property>
<property name="proxyTargetClass" value="true"/>
</bean>

<bean id='functionsImpl' class="FunctionsTest" />

<bean id='methodSecurityInterceptor' class='org.acegisecurity.intercept.method.aopallia nce.MethodSecurityInterceptor'>
<property name='authenticationManager' ref='authenticationManager' />
<property name='accessDecisionManager' ref='accessDecisionManager' />
<property name="objectDefinitionSource">
<ref local="myDefinitionSource"/>
</property>
</bean>

<bean id="myDefinitionSource" class="MyObjectDefinitionSource" init-method="init" />

When i deploy the application, i get the following error:

org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'methodSecurityInterceptor' defined in ServletContext resource [/WEB-INF/acegi-security.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyAccessExceptions Exception; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.TypeMismatchException: Failed to convert property value of type [MyObjectDefinitionSource] to required type [org.acegisecurity.intercept.method.MethodDefinitio nSource] for property 'objectDefinitionSource'
org.springframework.beans.PropertyAccessExceptions Exception; nested PropertyAccessException details (1) are:
PropertyAccessException 1:
org.springframework.beans.TypeMismatchException: Failed to convert property value of type [MyObjectDefinitionSource] to required type [org.acegisecurity.intercept.method.MethodDefinitio nSource] for property 'objectDefinitionSource'
...

Can anybody help me to find out what's the mistake?Thank you so much in advance!