TEIIDDES-2459: Adds version guard listener

* In addition to dialog question when calling the
SetDefaultServerAction,
  a warning should be displayed if a server is added and its the first

* ServerVersionGuard listener for default server changes and displays a
  warning if the server version is greater than the default

plugins/org.teiid.designer.dqp.ui/src/org/teiid/designer/runtime/ui/DqpUiPlugin.java

@@ -27,6 +27,7 @@
 import org.teiid.designer.runtime.preview.PreviewManager;
 import org.teiid.designer.runtime.preview.jobs.TeiidPreviewVdbCleanupJob;
 import org.teiid.designer.runtime.spi.ITeiidServerManager;
+import org.teiid.designer.runtime.ui.server.ServerVersionGuard;
 import org.teiid.designer.ui.common.AbstractUiPlugin;
 import org.teiid.designer.ui.common.actions.ActionService;
 import org.teiid.designer.ui.common.util.UiUtil;
@@ -143,6 +144,9 @@ public void start( BundleContext context ) throws Exception {
         super.start(context);
         // Initialize logging/i18n/debugging utility
         ((PluginUtilImpl)UTIL).initializePlatformLogger(this);
+
+        ITeiidServerManager manager = DqpPlugin.getInstance().getServerManager();
+        manager.addListener(ServerVersionGuard.getInstance());
     }
 
     @Override

plugins/org.teiid.designer.dqp.ui/src/org/teiid/designer/runtime/ui/i18n.properties

@@ -11,6 +11,12 @@ StatusBarUpdater.num_elements_selected={0} elements selected
 
 DqpUiPlugin.errorDialogTitle = Error
 
+#########################################
+# ServerVersionGuard
+#########################################
+ServerVersionGuard.notifyUnsupportedMsgTitle=Unsupported Teiid Version
+ServerVersionGuard.notifyUnsupportedMsg=The default Teiid Instance has an unsupported version. Care should be taken in modelling against this version and deploying artifacts to the server.
+
 ########## ConnectorBindingsTreeProvider ##########
 
 ConnectorBindingsTreeProvider.unexpectedElement={0} - {1}

plugins/org.teiid.designer.dqp.ui/src/org/teiid/designer/runtime/ui/server/ServerVersionGuard.java

@@ -0,0 +1,65 @@
+/*
+ * JBoss, Home of Professional Open Source.
+*
+* See the LEGAL.txt file distributed with this work for information regarding copyright ownership and licensing.
+*
+* See the AUTHORS.txt file distributed with this work for a full listing of individual contributors.
+*/
+package org.teiid.designer.runtime.ui.server;
+
+import static org.teiid.designer.runtime.ui.DqpUiConstants.UTIL;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.ui.IWorkbench;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.teiid.core.designer.util.StringConstants;
+import org.teiid.designer.runtime.spi.ExecutionConfigurationEvent;
+import org.teiid.designer.runtime.spi.IExecutionConfigurationListener;
+import org.teiid.designer.runtime.spi.ITeiidServer;
+import org.teiid.designer.runtime.ui.DqpUiPlugin;
+import org.teiid.designer.runtime.version.spi.ITeiidServerVersion;
+import org.teiid.designer.runtime.version.spi.TeiidServerVersion;
+
+/**
+ *
+ */
+public class ServerVersionGuard implements IExecutionConfigurationListener, StringConstants {
+
+    private static IExecutionConfigurationListener instance;
+
+    /**
+     * @return singleton instance
+     */
+    public static IExecutionConfigurationListener getInstance() {
+        if (instance == null)
+            instance = new ServerVersionGuard();
+
+        return instance;
+    }
+
+    @Override
+    public void configurationChanged(ExecutionConfigurationEvent event) {
+        if (ExecutionConfigurationEvent.EventType.DEFAULT != event.getEventType())
+            return;
+
+        if (ExecutionConfigurationEvent.TargetType.SERVER != event.getTargetType())
+            return;
+
+        ITeiidServer instance = event.getUpdatedServer();
+        ITeiidServerVersion version = instance.getServerVersion();
+        if (! version.isGreaterThan(TeiidServerVersion.Version.TEIID_DEFAULT.get()))
+            return;
+
+        IWorkbench workbench = DqpUiPlugin.getDefault().getWorkbench();
+        if (workbench == null)
+            return;
+
+        IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
+        if (window == null)
+            return;
+
+        MessageDialog.openWarning(window.getShell(),
+                                   UTIL.getString(getClass().getSimpleName() + DOT + "notifyUnsupportedMsgTitle"),  //$NON-NLS-1$
+                                   UTIL.getString(getClass().getSimpleName() + DOT + "notifyUnsupportedMsg")); //$NON-NLS-1$
+    }
+
+}