The dataview allows you to display contents of a view but you have to specify what it is you want to see. For example you create the dataview, add a datasource and then add what columsn you want to see. Like this:
<xe:dataView id="dataView1" var="viewEntry"
binding="#{viewStateBean.dataIterator}" collapsibleRows="true"
collapsibleDetail="true" openDocAsReadonly="true"
columnTitles="true" rows="10" pageName="document">
<xe:this.data>
<xp:dominoView var="dominoView"
viewName="xpByMostrecent" dataCache="full" >
</xp:dominoView>
</xe:this.data>
<xe:this.categoryColumn>
<xe:viewCategoryColumn columnName="Date" columnTitle="Date">
</xe:viewCategoryColumn>
</xe:this.categoryColumn>
<xe:this.summaryColumn>
<xe:viewSummaryColumn columnName="Topic" columnTitle="Topic">
</xe:viewSummaryColumn>
</xe:this.summaryColumn>
you should take a look at the demo app or the updated templates that come with the ExtLib to see these controls in action