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[utils]
/
support
/
general
/
src
/
main
/
java
/
org
/
wamblee
/
general
/
ThreadSpecificProxyFactory.java
diff --git
a/support/general/src/main/java/org/wamblee/general/ThreadSpecificProxyFactory.java
b/support/general/src/main/java/org/wamblee/general/ThreadSpecificProxyFactory.java
index f7087296796d8a60ae14fc83139aed7603c5ef2e..a5a1cebb3871e8b3334c3ecaabed71fa6232fab3 100644
(file)
--- a/
support/general/src/main/java/org/wamblee/general/ThreadSpecificProxyFactory.java
+++ b/
support/general/src/main/java/org/wamblee/general/ThreadSpecificProxyFactory.java
@@
-24,7
+24,8
@@
import java.lang.reflect.Proxy;
* Thread-specific proxy is used to create implementations of interfaces that
* delegate to a thread-specific implementation of the service.
*
* Thread-specific proxy is used to create implementations of interfaces that
* delegate to a thread-specific implementation of the service.
*
- * It is used for instance to pass a transaction scoped entity manager around.
+ * It can be used for instance to create a contextual reference to an entity manager
+ * that delegates to a thread-specific instance.
*
* The {@link #set(Object)} method sets the current service instance for the current thread.
* The {@link #get()} method gets the current service instance for the current thread.
*
* The {@link #set(Object)} method sets the current service instance for the current thread.
* The {@link #get()} method gets the current service instance for the current thread.
@@
-32,7
+33,7
@@
import java.lang.reflect.Proxy;
* instance. The result from this method can be passed at construction of an object that will be used
* by multiple threads.
*
* instance. The result from this method can be passed at construction of an object that will be used
* by multiple threads.
*
- * This class is mostly used by
other test tools.
+ * This class is mostly used by
infrastructure code (utilities) and test tools.
*
* @param T
* Interface to proxy.
*
* @param T
* Interface to proxy.
@@
-53,8
+54,9
@@
public class ThreadSpecificProxyFactory<T> {
}
}
}
}
- private ThreadLocal<T> svc
= new ThreadLocal<T>()
;
+ private ThreadLocal<T> svc;
private Class clazz;
private Class clazz;
+ private T proxy;
/**
* Constructs the factory.
/**
* Constructs the factory.
@@
-67,7
+69,9
@@
public class ThreadSpecificProxyFactory<T> {
throw new IllegalArgumentException("Class " + aClass.getName() +
" is not an interface");
}
throw new IllegalArgumentException("Class " + aClass.getName() +
" is not an interface");
}
+ svc = new ThreadLocal<T>();
clazz = aClass;
clazz = aClass;
+ proxy = createProxy();
}
/**
}
/**
@@
-81,7
+85,9
@@
public class ThreadSpecificProxyFactory<T> {
}
/**
}
/**
- * Gets the current thread-specific service.
+ * Gets the current thread-specific service.
+ * To get a contextual reference that can be used by any thread but delegates to a thread-specific
+ * instance, use {@link #getProxy()}.
* @return Service.
*/
public T get() {
* @return Service.
*/
public T get() {
@@
-95,15
+101,19
@@
public class ThreadSpecificProxyFactory<T> {
* @return Proxy.
*/
public T getProxy() {
* @return Proxy.
*/
public T getProxy() {
+ return proxy;
+ }
+
+ private T createProxy() {
InvocationHandler handler = new ThreadSpecificInvocationHandler();
Class proxyClass = Proxy.getProxyClass(clazz.getClassLoader(),
new Class[] { clazz });
InvocationHandler handler = new ThreadSpecificInvocationHandler();
Class proxyClass = Proxy.getProxyClass(clazz.getClassLoader(),
new Class[] { clazz });
- T proxy;
+ T proxy
Obj
;
try {
try {
- proxy = (T) proxyClass.getConstructor(
+ proxy
Obj
= (T) proxyClass.getConstructor(
new Class[] { InvocationHandler.class }).newInstance(
new Object[] { handler });
new Class[] { InvocationHandler.class }).newInstance(
new Object[] { handler });
- return proxy;
+ return proxy
Obj
;
} catch (Exception e) {
throw new RuntimeException("Could not create proxy for " +
clazz.getName(), e);
} catch (Exception e) {
throw new RuntimeException("Could not create proxy for " +
clazz.getName(), e);