Question

I have a problem with XML datasource for Jasper Reports. When i use selectExpression in JRXmlDataSource constructor, everything works, but when i use queryString in .jrxml, i get no records.

working example:

JRXmlDataSource ds2 = new JRXmlDataSource(new FileInputStream(dataSourceFile), "/pages/page");

not working example:

JRXmlDataSource ds1 = new JRXmlDataSource(new FileInputStream(dataSourceFile));

<jasperReport>
    <queryString language="xPath">
        <![CDATA[/pages/page]]>
    </queryString>
    ...
</jasperReport>

Data XML:

<?xml version="1.0" encoding="UTF-8"?>
<pages>
    <page>
        <firstname>X</firstname>
        <lastname>Y</lastname>
    </page>
    <page>
        <firstname>Z</firstname>
        <lastname>V</lastname>
    </page>
    <page>
        <firstname>B</firstname>
        <lastname>S</lastname>
    </page>
</pages>

Answer 1

I have found solution. Instead of passing a XML dataSource to JasperFillManager, it can be passed an XML document like below. Now XPath in <queryString language="xPath"> inside .jrxml template works on passed document and that’s it what i want.

Document document = JRXmlUtils.parse(JRLoader.getLocationInputStream(dataSourceFile));
params.put(JRXPathQueryExecuterFactory.PARAMETER_XML_DATA_DOCUMENT, document);
jasperPrint = JasperFillManager.fillReport(jasperReport, params);