Java Reference
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<queryString>
<![CDATA[select am.model
from aircraft a, aircraft_models am
where city='WASHINGTON'
and state='DC'
and a.aircraft_model_code = am.aircraft_model_code
order by model]]>
</queryString>
<field name="model" class="java.lang.String"/>
<variable name="totalAircraft" class="java.lang.Integer"
calculation="Count" resetType="Group"
resetGroup="modelGroup">
<variableExpression>
<![CDATA[$F{model}]]>
</variableExpression>
<initialValueExpression>
<![CDATA[new java.lang.Integer(0)]]>
</initialValueExpression>
</variable>
<group name="modelGroup">
<groupExpression>
<![CDATA[$F{model}]]>
</groupExpression>
</group>
<summary>
<band height="750">
<!-- Start 2D Pie Chart -->
<pieChart>
<chart evaluationTime="Report">
<reportElement x="135" y="0" width="270" height="350"/>
</chart>
<pieDataset>
<dataset incrementType="None"/>
<keyExpression>
<![CDATA[$F{model}]]>
</keyExpression>
<valueExpression>
<![CDATA[$V{totalAircraft}]]>
</valueExpression>
</pieDataset>
<piePlot>
<plot/>
</piePlot>
</pieChart>
<!-- End 2D Pie Chart -->
 
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