2.0 branch for possible maintenance release

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1526672 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 29 insertions, 0 deletions

diff --git a/sca-java-2.x/branches/2.0/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Callback.java b/sca-java-2.x/branches/2.0/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Callback.java
new file mode 100644
index 0000000000..cc68baaba9
--- /dev/null
+++ b/sca-java-2.x/branches/2.0/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Callback.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright(C) OASIS(R) 2005, 2010. All Rights Reserved.
+ * OASIS trademark, IPR and other policies apply.
+ */
+package org.oasisopen.sca.annotation;
+
+import static java.lang.annotation.ElementType.FIELD;
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * The @Callback annotation is used to annotate a service interface
+ * with a callback interface, which takes the Java Class object of
+ * the callback interface as a parameter.  
+ */
+@Target({TYPE, METHOD, FIELD})
+@Retention(RUNTIME)
+public @interface Callback {
+
+    /**
+     * The name of a Java class file containing the callback interface.
+     *
+     * @return    the callback interface
+     */
+    Class<?> value() default Void.class;
+}