Cannot getExtends for a ScalarParameterHandle

JimTalbut

Hi,<br />
<br />
I have an app that is trying to provide information on a report.<br />
The report makes use of a library, and parameters in the report extend parameters from the library (I don't have control of the report).<br />
In the report one parameter is defined as:<br />
<pre class='_prettyXprint _lang-auto _linenums:0'>
<scalar-parameter name="rp_Sort" id="14" extends="mylib.rp_Sort"/>
</pre>
and in the library:<br />
<pre class='_prettyXprint _lang-auto _linenums:0'>
<scalar-parameter name="rp_Sort" id="14">
<property name="hidden">true</property>
<property name="valueType">static</property>
<property name="isRequired">false</property>
<property name="dataType">string</property>
<property name="distinct">true</property>
<property name="paramType">simple</property>
<property name="controlType">text-box</property>
<structure name="format">
<property name="category">Unformatted</property>
</structure>
</scalar-parameter>
</pre>
<br />
My problem is that I need to report the isRequired property correctly for the parameter.<br />
The code is (roughly):<br />
<pre class='_prettyXprint _lang-auto _linenums:0'>
IReportEngine reportEngine = gtiReportEngine.getReportEngine();
IGetParameterDefinitionTask paramTask = reportEngine.createGetParameterDefinitionTask( reportRunnable );
Collection parameters = paramTask.getParameterDefns( true );

for( Object object : parameters )
{
if( object instanceof IScalarParameterDefn )
{
IScalarParameterDefn scalarParam = ( IScalarParameterDefn ) object;

ParameterDefn paramInfo = new ParameterDefn();
paramInfo.setName( scalarParam.getName() );

while( scalarParam != null )
{
paramInfo.setNullable( ! scalarParam.isRequired() );

if( null != scalarParam.getHandle() ) {
ScalarParameterHandle reportElementHandle = (ScalarParameterHandle)scalarParam.getHandle();
scalarParam = null;
if( null != reportElementHandle ) {
DesignElementHandle extendsHandle = reportElementHandle.getExtends();
if( null != extendsHandle ) {
if( extendsHandle instanceof IScalarParameterDefn ) {
scalarParam = ( IScalarParameterDefn ) object;
}
}
}
} else {
scalarParam = null;
}
}
results.add( paramInfo );
}
}
</pre>
<br />
isRequired returns null, which is expected (because isRequired is not set on the parameter in the report) but getExtends also returns null - which means I have no way to access to the isRequired from the library.<br />
<br />
Any ideas?<br />
<br />
Thanks

Rainer

Jim,

you got everything you need, so you get the required flag by calling

reportElementHandle.isRequired();

Because isRequired is a boolean variable you should always get true or false.

That should be everything you have to do you don?t need an extendHandle.

Regards Rainer