X-Git-Url: http://wamblee.org/gitweb/?a=blobdiff_plain;f=system%2Fgeneral%2Fsrc%2Fmain%2Fjava%2Forg%2Fwamblee%2Fsystem%2Fcore%2FRequiredInterface.java;h=76977d6cff20805c53ff507a869ed824b2e1238b;hb=49ce7cb8387601982d5e6ef186ce206d38f6e3d7;hp=ce8d084cdbaa2b11fcd25c65c7c194a871f64b1a;hpb=bb66d188e89338f718e7446bb91d8182cd2203fe;p=utils

diff --git a/system/general/src/main/java/org/wamblee/system/core/RequiredInterface.java b/system/general/src/main/java/org/wamblee/system/core/RequiredInterface.java
index ce8d084c..76977d6c 100644
--- a/system/general/src/main/java/org/wamblee/system/core/RequiredInterface.java
+++ b/system/general/src/main/java/org/wamblee/system/core/RequiredInterface.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2007 the original author or authors.
+ * Copyright 2005-2010 the original author or authors.
  * 
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,40 +12,51 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- */ 
+ */
 package org.wamblee.system.core;
 
-public interface RequiredInterface {
+/**
+ * 
+ * @author $author$
+ * @version $Revision: 1.6 $
+ */
+public interface RequiredInterface extends NamedInterface {
+    /**
+     * 
+     * @return True iff the required interface is optional.
+     */
+    boolean isOptional();
+
+    /**
+     * Checks if the service is provided by a given provided interface.
+     * 
+     * @param aInterface
+     *            Provided interface.
+     * 
+     * @return
+     */
+    boolean implementedBy(ProvidedInterface aInterface);
+
+    /**
+     * Sets the provider of this interface.
+     * 
+     * @param aProvider
+     *            Provider.
+     */
+    void setProvider(ProvidedInterface aProvider);
+
+    /**
+     * Gets the provider interface.
+     * 
+     * @return Provider or null if not set.
+     */
+    ProvidedInterface getProvider();
 
-	/**
-	 * Name for the interface. 
-	 */
-	public String getName(); 
-	
-	/**
-	 * Checks if the service is provided by a given provided interface. 
-	 * @param aInterface Provided interface. 
-	 * @return
-	 */
-	boolean implementedBy(ProvidedInterface aInterface);
-	
-	/**
-	 * Sets the provider of this interface. 
-	 * @param aProvider Provider. 
-	 */
-	void setProvider(ProvidedInterface aProvider);
-	
-	/**
-	 * Gets the provider interface. 
-	 * @return Provider or null if not set. 
-	 */
-	ProvidedInterface getProvider(); 
-	
-	/**
-	 * Gets the implementation of the required interface. 
-	 * @param <T>
-	 * @param aClass Interface type. 
-	 * @return Interface implementation or null if not known yet. 
-	 */
-	<T> T getImplementation(Class<T> aClass); 
+    /**
+     * Determines if the requirements of the current interface are at least
+     * those of the given required interface.
+     * 
+     * 
+     */
+    boolean covers(RequiredInterface aInterface);
 }