Implemented optinality of interfaces.

[utils] / system / general / src / main / java / org / wamblee / system / core / RequiredInterface.java

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 0fea736057bbc32849ef977004a91520b7a3f2ff..bcd2635d6cdc6e19742edd2789d9a0c6dcbd0d7b 100644 (file)
--- a/system/general/src/main/java/org/wamblee/system/core/RequiredInterface.java
+++ b/system/general/src/main/java/org/wamblee/system/core/RequiredInterface.java
@@ -20,7 +20,13 @@ public interface RequiredInterface {
        /**
         * Name for the interface. 
         */
-       public String getName(); 
+       String getName();
+       
+       /**
+        * @return True iff the required interface is optional. 
+        */
+       boolean isOptional(); 
+       
        
        /**
         * Checks if the service is provided by a given provided interface. 
@@ -36,7 +42,7 @@ public interface RequiredInterface {
        void setProvider(ProvidedInterface aProvider);
        
        /**
-        * Getst the provider interface. 
+        * Gets the provider interface. 
         * @return Provider or null if not set. 
         */
        ProvidedInterface getProvider();