JasperReports Subreport Stretching

Question

I'm trying to create an xls-report with JasperReports. For that I use JasperReports 5.5.0 (and iReport in the same version) and apache poi 3.9.

The base structure is a master-report with a subreport and this subreport also contains another subreport. For better understanding some code samples:

Masterreport:

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="report1" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="ada06392-98fc-4512-99d3-a4008c86ed40">
<property name="net.sf.jasperreports.export.xls.remove.empty.space.between.rows" value="true"/>
<property name="net.sf.jasperreports.export.xls.remove.empty.space.between.columns" value="true"/>
<property name="net.sf.jasperreports.export.xls.create.custom.palette" value="true"/>
<property name="net.sf.jasperreports.style.evaluation.time.enabled" value="true"/>
<property name="net.sf.jasperreports.export.xls.wrap.text" value="true"/>
<property name="net.sf.jasperreports.print.keep.full.text" value="true"/>
<property name="ireport.zoom" value="3.1384283767210035"/>
<property name="ireport.x" value="34"/>
<property name="ireport.y" value="0"/>
<parameter name="subreportDisLayer" class="net.sf.jasperreports.engine.JasperReport" isForPrompting="false"/>
<field name="nextLayerList" class="java.util.List"/>
<field name="field1" class="java.lang.String"/>
<field name="field2" class="java.lang.String"/>
<background>
    <band splitType="Stretch"/>
</background>
<columnHeader>
    <band height="42" splitType="Stretch"/>
</columnHeader>
<detail>
    <band height="13" splitType="Stretch">
        <subreport isUsingCache="true" runToBottom="true">
            <reportElement x="0" y="0" width="555" height="13" isPrintWhenDetailOverflows="true" uuid="222f19ef-c9f7-40a9-ae44-11ef6e15f1ad"/>
            <subreportParameter name="subsubreportLayer">
                <subreportParameterExpression><![CDATA[$P{subsubreportLayer}]]></subreportParameterExpression>
            </subreportParameter>
            <dataSourceExpression><![CDATA[new JRBeanCollectionDataSource($F{nextLayerList})]]></dataSourceExpression>
            <subreportExpression><![CDATA[$P{subreportLayer}]]></subreportExpression>
        </subreport>
        <textField isStretchWithOverflow="true" isBlankWhenNull="true">
            <reportElement stretchType="RelativeToTallestObject" mode="Opaque" x="40" y="0" width="30" height="13" isPrintWhenDetailOverflows="true" uuid="ab260763-72ff-47ff-ad53-dfedde447908"/>
            <box>
                <topPen lineWidth="0.5" lineColor="#000000"/>
                <leftPen lineWidth="0.5" lineColor="#000000"/>
                <bottomPen lineWidth="0.5" lineColor="#000000"/>
                <rightPen lineWidth="0.5" lineColor="#000000"/>
            </box>
            <textElement>
                <font size="8"/>
                <paragraph leftIndent="2" tabStopWidth="4"/>
            </textElement>
            <textFieldExpression><![CDATA[$F{field1}]]></textFieldExpression>
        </textField>
        <textField isStretchWithOverflow="true" isBlankWhenNull="true">
            <reportElement stretchType="RelativeToTallestObject" mode="Opaque" x="70" y="0" width="50" height="13" isPrintWhenDetailOverflows="true" uuid="c408ac05-ee11-4e49-9609-179429b76e20"/>
            <box>
                <topPen lineWidth="0.5" lineColor="#000000"/>
                <leftPen lineWidth="0.5" lineColor="#000000"/>
                <bottomPen lineWidth="0.5" lineColor="#000000"/>
                <rightPen lineWidth="0.5" lineColor="#000000"/>
            </box>
            <textElement>
                <font size="8"/>
                <paragraph leftIndent="2" tabStopWidth="4"/>
            </textElement>
            <textFieldExpression><![CDATA[$F{field2}]]></textFieldExpression>
        </textField>
    </band>
</detail>

Subreport 1:

<?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="report1" language="groovy" pageWidth="595" pageHeight="842" columnWidth="595" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="ada06392-98fc-4512-99d3-a4008c86ed40">
<property name="net.sf.jasperreports.export.xls.remove.empty.space.between.rows" value="true"/>
<property name="net.sf.jasperreports.export.xls.remove.empty.space.between.columns" value="true"/>
<property name="net.sf.jasperreports.export.xls.create.custom.palette" value="true"/>
<property name="net.sf.jasperreports.style.evaluation.time.enabled" value="true"/>
<property name="net.sf.jasperreports.export.xls.wrap.text" value="true"/>
<property name="net.sf.jasperreports.print.keep.full.text" value="true"/>
<property name="ireport.zoom" value="3.1384283767210035"/>
<property name="ireport.x" value="34"/>
<property name="ireport.y" value="0"/>
<parameter name="subsubreportLayer" class="net.sf.jasperreports.engine.JasperReport" isForPrompting="false"/>
<field name="nextLayerList" class="java.util.List"/>
<field name="field3" class="java.lang.String"/>
<background>
    <band splitType="Stretch"/>
</background>
<detail>
    <band height="13" splitType="Stretch">
        <subreport isUsingCache="true" >
            <reportElement x="0" y="0" width="555" height="13" isPrintWhenDetailOverflows="true" uuid="222f19ef-c9f7-40a9-ae44-11ef6e15f1ad"/>
            <dataSourceExpression><![CDATA[new JRBeanCollectionDataSource($F{nextLayerList})]]></dataSourceExpression>
            <subreportExpression><![CDATA[$P{subsubreportLayer}]]></subreportExpression>
        </subreport>
        <textField isStretchWithOverflow="true" isBlankWhenNull="true">
            <reportElement stretchType="RelativeToBandHeight" mode="Opaque" x="274" y="0" width="100" height="13" isPrintWhenDetailOverflows="true" uuid="7fae7678-55c7-4308-9977-f71e215b38c9"/>
            <box>
                <topPen lineWidth="0.5" lineColor="#000000"/>
                <leftPen lineWidth="0.5" lineColor="#000000"/>
                <bottomPen lineWidth="0.5" lineColor="#000000"/>
                <rightPen lineWidth="0.5" lineColor="#000000"/>
            </box>
            <textElement>
                <font size="8"/>
                <paragraph leftIndent="2" tabStopWidth="4"/>
            </textElement>
            <textFieldExpression><![CDATA[$F{field3}]]></textFieldExpression>
        </textField>
    </band>
</detail>

The second subreport looks almost the same like the first one.

My problem is, that if the row height of the master is larger than the whole band height of a subreport, the subreport won't stretch its band height to the masters row height. I know it has to be just a simple combination of settings, but I can't find it.

Answer 1

As expected it was a simple combination of the stretching-option... The elements of the master-report mustn't stretch with overflow, but must have the property net.sf.jasperreports.print.keep.full.text set to true. The first subreport follows the same rule, but the elements of the second subreport must stretch with overflow.