X-Git-Url: http://wamblee.org/gitweb/?a=blobdiff_plain;f=system%2Fgeneral%2Fsrc%2Fmain%2Fjava%2Forg%2Fwamblee%2Fsystem%2Fcore%2FDefaultRequiredInterface.java;h=01575db2c0dbc4e78b9bc53ac989b9cd22f0e2a6;hb=ad6e06e3c1ba0c4ae0dea100596b1c5503bfe1c6;hp=32276a25cc26d7237e479f379b5b94309773e3ae;hpb=4845c677310814de4c98e22aad483e49b9dfc594;p=utils

diff --git a/system/general/src/main/java/org/wamblee/system/core/DefaultRequiredInterface.java b/system/general/src/main/java/org/wamblee/system/core/DefaultRequiredInterface.java
index 32276a25..01575db2 100644
--- a/system/general/src/main/java/org/wamblee/system/core/DefaultRequiredInterface.java
+++ b/system/general/src/main/java/org/wamblee/system/core/DefaultRequiredInterface.java
@@ -20,6 +20,7 @@ import java.util.Arrays;
 public class DefaultRequiredInterface implements RequiredInterface {
 
 	private String _name;
+	private boolean _optional; 
 	private Class[] _required;
 	private ProvidedInterface _provider; 
 	
@@ -28,7 +29,17 @@ public class DefaultRequiredInterface implements RequiredInterface {
 	}
 
 	public DefaultRequiredInterface(String aName, Class[] aInterfaces) {
+		this(aName, aInterfaces, false); 
+	}
+	
+	public DefaultRequiredInterface(String aName, Class aInterface, boolean aIsOptional) {
+	    this(aName, new Class[] { aInterface }, aIsOptional );
+	}
+
+	
+	public DefaultRequiredInterface(String aName, Class[] aInterfaces, boolean aIsOptional) {
 		_name = aName; 
+		_optional = aIsOptional; 
 		_required = aInterfaces; 
 	}
 
@@ -37,6 +48,11 @@ public class DefaultRequiredInterface implements RequiredInterface {
 		return _name;
 	}
 	
+	@Override
+	public boolean isOptional() {
+		return _optional; 
+	}
+	
 	@Override
 	public boolean implementedBy(ProvidedInterface aDescriptor) {
 		Class[] provided = aDescriptor.getInterfaceTypes();
@@ -74,19 +90,19 @@ public class DefaultRequiredInterface implements RequiredInterface {
 	
 	@Override
 	public void setProvider(ProvidedInterface aProvider) {
+	    assert aProvider != null; 
+	    assert implementedBy(aProvider);
 		_provider = aProvider; 	
 	}
-
+	
 	@Override
-	public <T> T getImplementation(Class<T> aClass) {
-		if ( _provider == null ) { 
-			return null; 
-		}
-		return (T)_provider.getImplementation();
+	public boolean equals(Object obj) { 
+	    return this == obj; 
 	}
 	
 	@Override
-	public boolean equals(Object obj) {
+	public boolean covers(RequiredInterface obj) {
+	    // TODO do more than equals. 
 		if ( !(obj instanceof DefaultRequiredInterface)) { 
 			return false; 
 		}
@@ -113,6 +129,7 @@ public class DefaultRequiredInterface implements RequiredInterface {
 	@Override
 	public String toString() {
 		StringBuffer buf = new StringBuffer();
+		buf.append("." + getName() + ":");
 		for (Class intf: _required) { 
 			buf.append("." + intf.getName());
 		}