LMS-2139 minor: url resolver helper

SVN: 20514

openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/locator/AbstractViewLocatorResolver.java

 package ch.systemsx.cisd.openbis.generic.client.web.client.application.locator;
 
-
 import ch.systemsx.cisd.openbis.generic.client.web.client.exception.UserFailureException;
 import ch.systemsx.cisd.openbis.generic.shared.basic.dto.EntityKind;
 
@@ -46,6 +45,19 @@ public abstract class AbstractViewLocatorResolver implements IViewLocatorResolve
         return new Boolean(value);
     }
 
+    protected static final boolean getOptionalBooleanParameter(ViewLocator locator,
+            String paramName, boolean defaultValue)
+    {
+        Boolean valueOrNull = getOptionalBooleanParameter(locator, paramName);
+        if (valueOrNull == null)
+        {
+            return defaultValue;
+        } else
+        {
+            return valueOrNull.booleanValue();
+        }
+    }
+
     protected static final String getMandatoryParameter(ViewLocator locator, String paramName)
     {
         String valueOrNull = getOptionalParameter(locator, paramName);