how to move a group to next page JasperReport [duplicate] - jasper-reports

Question

Hi I am new to Jasper report and I am having a report with one text field and corresponding sub-report in the frame under detail band.Now I need to apply split type to prevent for the detail band, but I couldn't because I have subreport within detail band.Please assist me on this.Thanks in advance.
<detail>
<band height="30">
<frame>
<reportElement stretchType="RelativeToTallestObject" x="0" y="0" width="500" height="30" backcolor="#333333"/>
<box>
<topPen lineWidth="0.5" lineStyle="Solid" lineColor="#9B64C8"/>
<leftPen lineWidth="0.5" lineStyle="Solid" lineColor="#9B64C8"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#9B64C8"/>
</box>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement stretchType="RelativeToTallestObject" isPrintRepeatedValues="false" mode="Opaque" x="0" y="0" width="166" height="30" isPrintInFirstWholeBand="true" isPrintWhenDetailOverflows="true" forecolor="#000000" backcolor="#FFFFFF">
</reportElement>
<box leftPadding="5">
<topPen lineWidth="0.5" lineStyle="Solid" lineColor="#9BA66D"/>
<leftPen lineWidth="0.5" lineStyle="Solid" lineColor="#9BA66D"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#9BA66D"/>
<rightPen lineWidth="0.5" lineStyle="Solid" lineColor="#9BA66D"/>
</box>
<textElement textAlignment="Left" verticalAlignment="Middle">
<font fontName="Helvetica" size="9" isBold="false" pdfFontName="Helvetica" pdfEncoding="CP1252" isPdfEmbedded="false"/>
</textElement>
<textFieldExpression class="java.lang.String"><![CDATA[$F{text1}]]></textFieldExpression>
</textField>
<subreport>
<reportElement stretchType="RelativeToTallestObject" x="0" y="0" width="0" height="30"/>
<dataSourceExpression><![CDATA[$F{subreport}]]></dataSourceExpression>
<subreportExpression class="java.lang.String"><![CDATA["sub.jasper"]]></subreportExpression>
</subreport>
</frame>
</band>
</detail>
Second issue:

Answer 1

Since the textField needs to be next to subreport and you need jasper report to try to print the record completely on 1 page.
Design the report correctly (move the subreport and give it the correct dimensions)
<subreport>
<reportElement stretchType="RelativeToTallestObject" x="166" y="0" width="334" height="30" uuid="e812a308-674c-41dc-be83-e872752c8d6d"/>
<dataSourceExpression><![CDATA[$F{subreport}]]></dataSourceExpression>
<subreportExpression><![CDATA[$P{absolutePath} + "sub.jasper"]]></subreportExpression>
</subreport>
The subreport should have correct pageWidth, columnWidth and margins
<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="subreport" pageWidth="334" pageHeight="842" columnWidth="332" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" uuid="775a7e35-9af8-4206-a155-b05a478c35b0">
Move the splitType="prevent" from subreport to main report.
This will need that your datasource is a JRRewindableDataSource, since jasper report will try to fill band in current page, but if it can not it will need to rewind and fill on next page. You need to implement the moveFirst() method in your datasource.