Gotz defines two XML Namespaces.

• http://codetab.org/gotz
• http://codetab.org/xfields

They are required in root element <gotz> in the definition files bean.xml and job.xml files

<gotz xmlns="http://codetab.org/gotz"
      xmlns:xf="http://codetab.org/xfields">

      ....
</gotz>

The namespace http://codetab.org/gotz is default namespace and it is set with xmlns attribute.

Gotz uses extensible fields (xfields) to pass user defined values to the classes and these fields uses namespace http://codetab.org/xfields and it is set in root element using xml:xf attribute with xf prefix. The root element of xfields is <fields> and now onward, we refer xfields as fields.

Embedded Fields

The <fields> defined within dataDef should always prefixed with xf:

<dateDef>
....
  <member name="year">
      <xf:fields>
         <xf:indexRange value="2-6" />
      </xf:fields>
  </member>

Standalone Fields

The job.xml defines tasks using fields element and when tasks definition is lengthy it may be cumbersome to prefix, each and every fields, with xf: and to make it easy, for standalone fields such as tasks we reset NS http://codetab.org/xfields as default NS. The snippet from Example-6 job.xml is shown below

<gotz xmlns="http://codetab.org/gotz" xmlns:xf="http://codetab.org/xfields">

    <locators group="bs">
        <locator name="Acme" url="/defs/examples/page/acme-bs.html" />
    </locators>

    <fields name="locator" class="org.codetab.gotz.model.Locator"
        xmlns="http://codetab.org/xfields">

        <tasks name="bs tasks" group="bs">
            <task name="bs" dataDef="bs">
    ...
    </fields>

    <dataDef name="bs">
        <axis name="col">
           xf:fields>
              <xf:query region="table:contains(Sources Of Funds)"
                field="tr:nth-child(1) > td:nth-child(%{col.index})" />
          </xf:fields>
    </dataDef>

</gotz>

• It starts with standard <gotz> with default NS (gotz) and xf: NS (xfields)
• The first child, locators, belongs to default NS (gotz) and any embedded fields should be prefixed with xf:
• The next element fields, redefines NS http://codetab.org/xfields as default. Now on, there is no need to prefix xf: for fields and all its children.
• The redefined NS is only applicable up to the closing <fields> and after that, original NS become effective So, <dataDef belongs default NS (gotz) and any fields embedded in it should be prefixed with xf:

In this next chapter, we look at tasks and how to define workflow.