Default and Constructed Values

You can define default values for variables and parameters with a scalar datatype. Use the default attribute. You cannot set a default for variables or parameters with a complex datatype. For example:

You can, however, construct the data for a variable or parameter that has a complex datatype by defining the XML and data literally within <variable>, <input> or <output>.

Add the XML within <variable>, <input> or <output> and enter the literal data. It is a good practice to define a separate namespace for this literal XML to clearly differentiate from EMML. For example:

<inputparam name="query">
<svc:query>
<svc:category>books</svc:category>
<svc:ranking>allResults<svc:ranking>
<svc:date>{$queryDate}</svc:date>
<svc:maximum>100</svc:maximum>
</svc:query>
</inputparam>
<variables>
<variable name="header" type="document">
<header>
<Authorization>GoogleLogin auth={$auth}</Authorization>
<Content-Type>application/atom+xml</Content-Type>
</header>
</variable>
<variable name="soapRequest" type="document"/>
<constructor outputvariable="soapRequest">
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:enc="http://schemas.xmlsoap.org/soap/encoding" >
<soap:Header>{$soapHeader}</soap:Header>
<soap:Body>{$soapBody}</soap:Body>
</soap:Envelope>
</constructor>
</variables>

You can also construct variables with dynamic data using some EMML statements. See Constructing the Mashup Result, Inputs or Intermediate Variables for links and information.