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diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Reference.java b/sca-java-2.x/tags/2.0.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Reference.java
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+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/sca-api/src/main/java/org/oasisopen/sca/annotation/Reference.java
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+/*
+ * 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.PARAMETER;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * The @Reference annotation type is used to annotate a Java class field,
+ * a setter method, or a constructor parameter that is used to inject a
+ * service that resolves the reference. The interface of the service
+ * injected is defined by the type of the Java class field or the type
+ * of the input parameter of the setter method or constructor.
+ *
+ * The @Reference annotation MUST NOT be used on a class field that is
+ * declared as final.
+ *
+ * References can also be injected via setter methods even when
+ * the @Reference annotation is not present.  However, the @Reference
+ * annotation must be used in order to inject a reference onto a non-public
+ * field.  In the case where there is no @Reference annotation, the name
+ * of the reference is the same as the name of the field or setter.
+ *
+ * Where there is both a setter method and a field for a reference, the
+ * setter method is used.
+ */
+@Target({METHOD, FIELD, PARAMETER})
+@Retention(RUNTIME)
+public @interface Reference {
+
+    /**
+     * The name of the reference. For a field annotation, the default is
+     * the name of the field of the Java class.  For a setter method
+     * annotation, the default is the JavaBeans property name corresponding
+     * to the setter method name.  For a constructor parameter annotation,
+     * there is no default and the name attribute MUST be present.
+     *
+     * @return    the name of the reference
+     */
+    String name() default "";
+
+    /**
+     * Specifies whether injection of service or services is required.
+     * Defaults to true. For a constructor parameter annotation, this
+     * attribute MUST have the value true.
+     *
+     * @return    true if injection is required
+     */
+    boolean required() default true;
+}