Initial commit of OSGi Shell contribution. (FELIX-946)


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@783826 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/gogo/src/aQute/shell/osgi/ServiceCommand.java b/gogo/src/aQute/shell/osgi/ServiceCommand.java
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+++ b/gogo/src/aQute/shell/osgi/ServiceCommand.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, 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 aQute.shell.osgi;
+
+import java.util.*;
+
+import org.osgi.framework.*;
+import org.osgi.service.command.*;
+
+import aQute.shell.runtime.*;
+
+public class ServiceCommand extends Reflective implements Function {
+	ServiceReference	ref;
+	OSGiShell			shell;
+	String				name;
+	
+	public ServiceCommand(OSGiShell shell, ServiceReference ref, String name) {
+		this.shell =shell;
+		this.ref = ref;
+		this.name = name;
+	}
+
+	public Object execute(CommandSession session, List<Object> arguments) throws Exception {
+		try {
+			Object target = shell.bundle.getBundleContext().getService(ref);
+			Object result = method(session,target, name, arguments);
+			if ( result != CommandShellImpl.NO_SUCH_COMMAND )
+				return result;
+			
+			throw new IllegalArgumentException("Service does not implement promised command " + ref + " " + name );
+		} finally {
+			shell.bundle.getBundleContext().ungetService(ref);
+		}
+	}
+}