Intake: Handling of empty values

• Key: TRB-9
• Type: Bug
• Status: Closed
• Resolution: Fixed
• Priority: Blocker
• Assignee: Unassigned
• Reporter: Stefan Broetz
• Component/s: Turbine 2.3
• Affects Version/s: Core 2.3.2

Description

It seems to be impossible transmit the empty string as a value: In the HTTP request

  http://.../turbine/...?aaa=123&bbb=&ccc=456

the parameter bbb is ignored.

If you look at org.apache.turbine.services.intake.model.Field.init(ValueParser pp) you find:

        if (pp.containsKey(getKey()))
        {
            if (isDebugEnabled)
            {
                log.debug(name + ": Found our Key in the request, setting Value");
            }
            if (StringUtils.isNotEmpty(pp.getString(getKey())))
            {
                setFlag = true;
            }
            validate();
        }
        else if (pp.containsKey(getValueIfAbsent()) &&
                pp.getString(getValueIfAbsent()) != null)
        {
            pp.add(getKey(), pp.getString(getValueIfAbsent()));
            setFlag = true;
            validate();
        }

The StringUtils.isNotEmpty() condition (line 342) prevents that a field can take up the empty string as its value.