@Conversational + @Scope("REQUEST") Failed on java.lang.ClassCastException:
java.lang.String incompatible with java.lang.Thread
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Key: TUSCANY-1660
URL: https://issues.apache.org/jira/browse/TUSCANY-1660
Project: Tuscany
Issue Type: Bug
Affects Versions: Java-SCA-0.99
Environment: WindowsXP, IBM JDK5
Reporter: Jun JIe Nan
Fix For: Java-SCA-0.99
I tried to make some sense on @Conversational and @Scope("REQUEST"), but
failed. The error message:
java.lang.ClassCastException: java.lang.String incompatible with
java.lang.Thread
at org.apache.tuscany.sca.core.scope.RequestScopeContainer.getWrapper
(RequestScopeContainer.java:35)
at
org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.getInstance(JavaImplementationInvoker.java:62)
at
org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke
(JavaImplementationInvoker.java:85)
at
org.apache.tuscany.sca.binding.sca.impl.RuntimeSCABindingInvoker.invoke(RuntimeSCABindingInvoker.java:48)
at org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke
(JDKInvocationHandler.java:270)
at
org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:114)
at $Proxy9.empty(Unknown Source)
at samples.hex.HexTest.testCartService (HexTest.java:77)
I tried:
1. @Conversational + @Scope("STATELESS")
2. @Conversational + @Scope("CONVERSATION")
3. @Conversational + @Scope("COMPOSITE")
All the above 3 worked fine and did not have the error message above.
Anybody can give me some hints, thanks!
The component definition:
<component name="CartComponent">
<implementation.java class="samples.hex.cart.impl.CartImpl"/>
</component>
The implementation:
package samples.hex.cart.impl;
import java.util.HashMap;
import java.util.Map;
import org.osoa.sca.annotations.ConversationID;
import org.osoa.sca.annotations.Destroy;
import org.osoa.sca.annotations.Init;
import org.osoa.sca.annotations.Scope;
import org.osoa.sca.annotations.Service;
import samples.hex.cart.services.CartService;
@Scope("REQUEST")
@Service(CartService.class)
public class CartImpl implements CartService {
@ConversationID
protected String conversationID;
protected Map<String, Integer> cart;
@Init
protected void init(){
if(cart==null)
cart = new HashMap<String, Integer>();
}
public void empty() {
cart.clear();
}
public Map<String, Integer> getItems() {
return cart;
}
public void updateItem(String itemID, int quantity) {
if(quantity<=0)
cart.remove(itemID);
cart.put(itemID, quantity);
System.out.println (conversationID + ":" + this);
}
@Destroy
protected void destroy(){
empty();
}
}
The interface:
package samples.hex.cart.services;
import java.util.Map ;
import org.osoa.sca.annotations.Conversational;
@Conversational
public interface CartService{
public void updateItem(String itemID, int quantity);
public void empty();
public Map<String, Integer> getItems();
}
The Test Code:
@Test
public void testCartService(){
CartService cart = hex.getService(CartService.class,
"CartComponent/CartService");
assertNotNull(cart);
cart.empty();
}
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