DDL generation fix

plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/ui/actions/navigator/NavigatorHandlerObjectBase.java

@@ -200,7 +200,7 @@ public abstract class NavigatorHandlerObjectBase extends AbstractHandler {
         Collection<? extends DBECommand> commands = commandContext.getFinalCommands();
         StringBuilder script = new StringBuilder();
         for (DBECommand command : commands) {
-            script.append(DBUtils.generateScript(command.getPersistActions()));
+            script.append(DBUtils.generateScript(command.getPersistActions(), false));
         }
         DatabaseNavigatorView view = UIUtils.findView(workbenchWindow, DatabaseNavigatorView.class);
         if (view != null) {

plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/ui/editors/entity/EntityEditor.java

@@ -19,7 +19,6 @@ package org.jkiss.dbeaver.ui.editors.entity;
 
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.jface.dialogs.IDialogConstants;
-import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
@@ -65,7 +64,6 @@ import org.jkiss.dbeaver.ui.editors.DatabaseEditorInput;
 import org.jkiss.dbeaver.ui.editors.ErrorEditorInput;
 import org.jkiss.dbeaver.ui.editors.IDatabaseEditorInput;
 import org.jkiss.dbeaver.ui.editors.MultiPageDatabaseEditor;
-import org.jkiss.dbeaver.ui.navigator.INavigatorModelView;
 import org.jkiss.utils.CommonUtils;
 
 import java.lang.reflect.InvocationTargetException;
@@ -347,7 +345,7 @@ public class EntityEditor extends MultiPageDatabaseEditor
                 return IDialogConstants.CANCEL_ID;
             }
             script.append(DBUtils.generateScript(
-                command.getPersistActions()));
+                command.getPersistActions(), false));
         }
 
         ChangesPreviewer changesPreviewer = new ChangesPreviewer(script, allowSave);

plugins/org.jkiss.dbeaver.ext.generic/src/org/jkiss/dbeaver/ext/generic/model/meta/GenericMetaModel.java

@@ -237,7 +237,7 @@ public class GenericMetaModel {
     public String getTableDDL(DBRProgressMonitor monitor, GenericTable sourceObject) throws DBException {
         GenericTableManager tableManager = new GenericTableManager();
         DBEPersistAction[] ddlActions = tableManager.getTableDDL(monitor, sourceObject);
-        return DBUtils.generateScript(ddlActions);
+        return DBUtils.generateScript(ddlActions, true);
     }
 
     public String getProcedureDDL(DBRProgressMonitor monitor, GenericProcedure sourceObject) throws DBException {

plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/DBUtils.java

@@ -1107,12 +1107,14 @@ public final class DBUtils {
     }
 
     @NotNull
-    public static String generateScript(DBEPersistAction[] persistActions)
+    public static String generateScript(DBEPersistAction[] persistActions, boolean existingObject)
     {
         String lineSeparator = GeneralUtils.getDefaultLineSeparator();
         StringBuilder script = new StringBuilder(64);
-        script.append(DBEAVER_DDL_COMMENT).append(Platform.getProduct().getName()).append(lineSeparator)
-            .append(DBEAVER_DDL_WARNING).append(lineSeparator);
+        if (existingObject) {
+            script.append(DBEAVER_DDL_COMMENT).append(Platform.getProduct().getName()).append(lineSeparator)
+                .append(DBEAVER_DDL_WARNING).append(lineSeparator);
+        }
         for (DBEPersistAction action : ArrayUtils.safeArray(persistActions)) {
             String scriptLine = action.getScript();
             if (CommonUtils.isEmpty(scriptLine)) {