Re: cayenne+jasperreports problem

From: Alan Baltazar (acatalan..ahoo.com)
Date: Fri May 12 2006 - 03:45:59 EDT

  • Next message: Alan Baltazar: "Re: cayenne+jasperreports problem"

      i'm new at using DataRows. i used SQLTemplate to returned the list of
    dataobjects....instead of a list of DataRows. i'm trying to figure out how to go about
    this returning a list of DataRows from a SQLTemplate....does anyone know of a cayenne
    class that can do this? so i don't have to resort to writing another set of code to fix
    this problem..i'm trying to use as much of cayenne api's as possible.

    --- Tobias.Schoessle..nvienna.org wrote:

    > Alan, did you make sure that the list you hand in contains DataRows? e.g. used
    > SQLTemplate to create the list and set to return DataRows?
    >
    > Alan Baltazar <acatalan..ahoo.com> wrote:
    > hello,
    >
    > i implemented this
    > http://www.objectstyle.org/confluence/display/CAY/Jasper+Integration
    > to integrate cayenne and jasperreports for a web application (no spring framework, just
    > straight cayenne,struts web app). my problem here, is that, I get a class cast
    > exception
    > for this class, DataRowDataSource (see arrow below).
    >
    > public class DataRowDataSource implements JRDataSource {
    >
    > private Iterator rowIterator;
    > private DataRow activeRow;
    >
    > public DataRowDataSource(List dataRowList) {
    > rowIterator = dataRowList.iterator();
    > activeRow = (DataRow)rowIterator.next(); <--- cast problem here (posted sample
    >
    > didn't have the (DataRow) cast, i
    > added it here to compile)
    > }
    >
    > public boolean next() throws JRException {
    > boolean hasNext = rowIterator.hasNext();
    > if (hasNext) {
    > activeRow = (DataRow) rowIterator.next();
    > }
    >
    > return hasNext;
    > }
    >
    > public Object getFieldValue(JRField field) throws JRException {
    > return activeRow.get(field.getName());
    > }
    >
    > }
    >
    > has anyone implemented this sample? if yes, how did you fix this problem? I'm using
    > the
    > latest cayenne, struts, jasperreports versions.
    >
    > Alan,
    >
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