diff -r 87cfa131b535 -r e7e0ae78773e configurationengine/source/plugins/example/ConeExampleValidatorPlugin/examplevalidatorplugin/validators.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/configurationengine/source/plugins/example/ConeExampleValidatorPlugin/examplevalidatorplugin/validators.py	Tue Aug 10 14:29:28 2010 +0300
@@ -0,0 +1,39 @@
+#
+# Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+# All rights reserved.
+# This component and the accompanying materials are made available
+# under the terms of "Eclipse Public License v1.0"
+# which accompanies this distribution, and is available
+# at the URL "http://www.eclipse.org/legal/epl-v10.html".
+#
+# Initial Contributors:
+# Nokia Corporation - initial contribution.
+#
+# Contributors:
+#
+# Description: 
+#
+
+from cone.public import api
+from cone.confml import model
+from cone.validation.confmlvalidation import ValidatorBase
+
+class ExampleValidator(ValidatorBase):
+    PROBLEM_TYPES = ['model.confml.foo_missing']
+    
+    def validate(self):
+        for ref, feature in self.context.feature_dict.iteritems():
+            if isinstance(feature._obj, model.ConfmlStringSetting) and feature.ref.startswith('FOO_'):
+                value = feature.get_value()
+                if isinstance(value, basestring) and 'foo' not in value:
+                    dataobj = feature.datas['data'][-1]
+                    
+                    prob = api.Problem(
+                        msg = "String 'foo' missing from value of feature '%s'" % ref,
+                        type = self.PROBLEM_TYPES[0],
+                        line = dataobj.lineno,
+                        file = dataobj.get_configuration_path(),
+                        severity = api.Problem.SEVERITY_WARNING)
+                    self.context.problems.append(prob)
+
+VALIDATOR_CLASSES = [ExampleValidator]