Add an adaptor so that the TaskContext will still apear as an Avalon COntext to the Configurer

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271476 13f79535-47bb-0310-9956-ffa450edef68

proposal/myrmidon/src/java/org/apache/myrmidon/interfaces/configurer/TaskContextAdapter.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) The Apache Software Foundation. All rights reserved.
+ *
+ * This software is published under the terms of the Apache Software License
+ * version 1.1, a copy of which has been included  with this distribution in
+ * the LICENSE.txt file.
+ */
+package org.apache.myrmidon.interfaces.configurer;
+
+import org.apache.avalon.framework.context.Context;
+import org.apache.avalon.framework.context.ContextException;
+import org.apache.myrmidon.api.TaskContext;
+
+/**
+ * This class adpats the TaskContext API to the Avalon Context API.
+ *
+ * @author <a href="mailto:peter@apache.org">Peter Donald</a>
+ * @version $Revision$ $Date$
+ */
+public class TaskContextAdapter
+    implements Context
+{
+    private final TaskContext m_context;
+
+    public TaskContextAdapter( final TaskContext context )
+    {
+        m_context = context;
+    }
+
+    public Object get( Object key )
+        throws ContextException
+    {
+        final Object value = m_context.getProperty( key.toString() );
+        if( null != value )
+        {
+            return value;
+        }
+        else
+        {
+            throw new ContextException( "Missing key " + key );
+        }
+    }
+}