jr:table using the REPORT_DATA_SOURCE datasource

 Hello, 

I'm trying to generate a report with a table which contains data from the main data source.

However, I'm pretty stuck, because the table simply isn't displayed in the report (although no error is reported).

This is what I want to obtain:

However, the report contains a simple horizontal line instead of the table. 

I'm trying to use the jr:table as follows: 

1) First, I'm using a JRBeanArrayDataSource constructed with the following array of objects: 

  public static Object[] createBeanCollection() {

        Object[] reportRows= new Object[2];

        reportRows[0] = new FilterData("east");  //public FilterData(String territory)

        reportRows[1] = new FilterData("wast");

        return reportRows;

    }

    where FilterData is a simple javabean, having a "territory" property.

1) In my jrxml, I declared a subdataset containing the territory field. 

<subDataset name="Table Dataset 1">

   <field name="territory" class="java.lang.String"/>

</subDataset>

( I am not sure if this approach is ok. Does declaring the field "territory" in the subDataset enable me to use $F{territory} in jr:detailCell? Because this is what I'm doing...and it doesn't work).

2) I'm trying to use this subDataset in a jr:table, as follows: (in the <detail> <band> section) 

<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="Table Dataset 1">

    <dataSourceExpression><![CDATA[$P{REPORT_DATA_SOURCE}]]></dataSourceExpression>

     </datasetRun>

     <jr:column width="90">

  <jr:columnHeader style="table_CH" height="30">

<staticText>

                 <reportElement x="0" y="0" width="90" height="30"/>

         <text><![CDATA[Territory]]></text>

</staticText>

           </jr:columnHeader>

  <jr:detailCell style="table_TD" height="20">

<textField>

         <reportElement x="0" y="0" width="90" height="20"/>

   <textFieldExpression class="java.lang.String"><![CDATA[$F{territory}]]></textFieldExpression>             

</textField>

  </jr:detailCell>

  </jr:column>

</jr:table>

Do you have any idea on what I' m doing wrong here? 

Thanks a lot! 

Teo

 public static Object[] createBeanCollection() {        Object[] reportRows= new Object[2];        reportRows[0] = new FilterData("east");  //public FilterData(String territory)        reportRows[1] = new FilterData("wast");        return reportRows;    }<subDataset name="Table Dataset 1">  	<field name="territory" class="java.lang.String"/></subDataset><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="Table Dataset 1">	    <dataSourceExpression><![CDATA[$P{REPORT_DATA_SOURCE}]]></dataSourceExpression>     </datasetRun>     <jr:column width="90">	  <jr:columnHeader style="table_CH" height="30">		<staticText>                	<reportElement x="0" y="0" width="90" height="30"/>	        	<text><![CDATA[Territory]]></text>		</staticText>           </jr:columnHeader>	  <jr:detailCell style="table_TD" height="20">		<textField>	        	<reportElement x="0" y="0" width="90" height="20"/>		  	<textFieldExpression class="java.lang.String"><![CDATA[$F{territory}]]></textFieldExpression>             		</textField>	  </jr:detailCell>  </jr:column></jr:table>

Did you ever get an answer to this question? I am having the exact same problem. Mind sharing?

Hi ,

It's been a while since then, but I recall:

1) wrapping the JRBeanArrayDataSource  into a JRMapArrayDataSource, like this :

   Map[] masterData = new Map[1];

  masterData[0] = new HashMap();

  masterData[0].put("filterDataSource", filterDataSource);

  //I had other similar dataSources 

 and then created and passed the data source like this:   new JRMapArrayDataSource(masterData)

2) The, in the jrxml file, I replaced the $P{REPORT_DATA_SOURCE} with $F{filterDataSource}. Something like this:

<subDataset name="filterDataSet">

   <field name="territory" class="java.lang.String"/>

</subDataset>

<field name="filterDataSource" class="net.sf.jasperreports.engine.data.JRBeanArrayDataSource"/>

and in the table: 

<jr:table>

     <datasetRun subDataset="filterDataSet">

   <dataSourceExpression><![CDATA[$F{filterDataSource}]]></dataSourceExpression>

     </datasetRun>

     <jr:column width="90">

  <jr:columnHeader style="table_CH" height="30">

<staticText>

                <reportElement x="0" y="0" width="90" height="30"/>

         <text><![CDATA[Territory]]></text>

</staticText>

           </jr:columnHeader>

  <jr:detailCell style="table_TD" height="20">

<textField>

         <reportElement x="0" y="0" width="90" height="20"/>

   <textFieldExpression class="java.lang.String"><![CDATA[$F{territory}]]></textFieldExpression>             

</textField>

  </jr:detailCell>

  </jr:column>

 </jr:table>

I don't know whether this is the "orthodox" solution for this, but it worked for me. 

Also, i posted this question on stackoverflow as well (http://stackoverflow.com/questions/4563176/jasper-table-component),

and someone seems to have found the answer: 

<datasetRun subDataset="TableDataset">     <datasetParameter name="REPORT_DATA_SOURCE">        <datasetParameterExpression><![CDATA[$P{REPORT_DATA_SOURCE}]]></datasetParameterExpression>     </datasetParameter> </datasetRun>[/code]

But I haven't tested this (since it came a bit too late), but maybe it works for you. 

Hope this helps! 

Teo