CODEWITHSUNDEEP
javajsfjakarta-eejasper-reportsireport
Camilo
Camilo

Reputation: 309

Jasper - ireport - java web application - datasource static method

I'm facing the following doubt related to pass info from a JEE web app to ireport in order to fill a table in jasper.

In Ireport when I'm creating a datasource from a java bean, it's asking me a static method that it will send data to jasper and use it to complete the table. However, every time I try to implement a static function in a state/statless/managed bean and call the class that has the Collection to display in jasper It says "non-static variable XX cannot be referenced from a static context".

I know it is happening because I need to create an EJB instance inside the static method and fill the collection to be returned. But I shouldn't create EJB instances, even if I could, the new instance wouldn't have the same info that the current EJB context has.

I haven't found a workaround method in order to solve this. Do you have any recomendations?

I'm using JSF 2, java EJB , JPA and glassfish 3.1

Thank you,

Upvotes: 1

Views: 914

Answers (2)

Camilo
Camilo

Reputation: 309

Jasper documentation is not so simple to understand and It may confuse you most of the time. What I did was create an additional JRBeanCollectionDataSource attribute in the class that i sent to the report through bean injection. This new attribute let me send an Collection (a list) and in jasper reports, I declared inside the table a datasource which value is the bean's attribute I mentioned before.

    <jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">
                <datasetRun subDataset="DosCoulmnas" uuid="1364a3ee-d385-49a0-9d12-e5bdd95832ac">
                    <datasetParameter name="encabezados">
                        <datasetParameterExpression><![CDATA[$F{dtoPDFAreaYGrado1.dtoEstablecimiento}.getEncabezados()]]></datasetParameterExpression>
                    </datasetParameter>
                    <dataSourceExpression><![CDATA[$F{dtoPDFAreaYGrado1.dtoEstablecimiento}.getDatos()]]></dataSourceExpression>
                </datasetRun>

Upvotes: 2

Endrik
Endrik

Reputation: 2258

Instead of static methods, try using bean injection, so you can have a reference to the current state of the bean, and use it's method from it.

Upvotes: 1

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