Examples of net.sf.jasperreports.engine.JRDataSource

net.sf.jasperreports.engine.JRDataSource
This interface represents the abstract representation of a JasperReports data source. All data source types must implement this interface.
JasperReports provides default implementations of result set, bean collections and bean arrays data sources. @author Teodor Danciu (teodord@users.sourceforge.net) @version $Id: JRDataSource.java 3033 2009-08-27 11:46:22Z teodord $

        // create empty order
        Order order = Order.create();
        order.setName(_("All projects"));


        // create empty subreport to expense sheets
        JRDataSource emptyES = new JRBeanCollectionDataSource(
                createEmptyExpenseSheetLineList(order));


        // create empty subreport to work report lines
        JRDataSource emptyWRL = new JRBeanCollectionDataSource(createEmptyWorkReportLineList(order));


        OrderCostMasterDTO emptyDTO = new OrderCostMasterDTO(order, emptyWRL, emptyES);
        return emptyDTO;
    }

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  public static JasperPrint generateJasperPrint(DynamicReport dr, LayoutManager layoutManager, JRDataSource ds) throws JRException {
        return generateJasperPrint(dr, layoutManager, ds, new HashMap());
    }


  public static JasperPrint generateJasperPrint(DynamicReport dr, LayoutManager layoutManager, Collection collection) throws JRException {
    JRDataSource ds = new JRBeanCollectionDataSource(collection);
    return generateJasperPrint(dr, layoutManager, ds, new HashMap());
  }

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    JRDataSource ds = new JRBeanCollectionDataSource(collection);
    return generateJasperPrint(dr, layoutManager, ds, new HashMap());
  }


  public static JasperPrint generateJasperPrint(DynamicReport dr, LayoutManager layoutManager, ResultSet resultSet) throws JRException {
    JRDataSource ds = new JRResultSetDataSource(resultSet);
    return generateJasperPrint(dr, layoutManager, ds, new HashMap());
  }

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        }




        //construct the dynamic report
        //final OgnlValueStack stack = _invocation.getStack();
        final JRDataSource ds = (JRDataSource)conditionalParse(dataSource, _invocation, JRDataSource.class);
        //final OgnlValueStackDataSource stackDataSource = new OgnlValueStackDataSource(stack, dataSource);


        // (Map) ActionContext.getContext().getSession().get("IMAGES_MAP");


        final HttpServletRequest request = (HttpServletRequest)_invocation.getInvocationContext().get(WebWorkStatics.HTTP_REQUEST);

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                    jasperTemplateBuild.getAbsolutePath(),
                    values.asMap(),
                    connection);


        } else {
            JRDataSource dataSource;
            if (template.getTableDataKey() != null) {
                final Object dataSourceObj = values.getObject(template.getTableDataKey(), Object.class);
            if (dataSourceObj instanceof JRDataSource) {
                dataSource = (JRDataSource) dataSourceObj;
            } else if (dataSourceObj instanceof Iterable) {

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    @Nullable
    @Override
    public Output execute(final Input input, final ExecutionContext context) throws Exception {


        JRDataSource jrDataSource = processInput(input);


        if (jrDataSource == null) {
            jrDataSource = new JREmptyDataSource();
        }
        return new Output(jrDataSource);

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        for (Source source : this.sources) {
            source.type.add(rows, values.values, source);
        }


        JRDataSource mergedDataSource = new JRMapCollectionDataSource(rows);
        return new Out(mergedDataSource);
    }

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  public static JasperPrint generateJasperPrint(DynamicReport dr, LayoutManager layoutManager, JRDataSource ds) throws JRException {
        return generateJasperPrint(dr, layoutManager, ds, new HashMap());
    }


  public static JasperPrint generateJasperPrint(DynamicReport dr, LayoutManager layoutManager, Collection collection) throws JRException {
    JRDataSource ds = new JRBeanCollectionDataSource(collection);
    return generateJasperPrint(dr, layoutManager, ds, new HashMap());
  }

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    JRDataSource ds = new JRBeanCollectionDataSource(collection);
    return generateJasperPrint(dr, layoutManager, ds, new HashMap());
  }


  public static JasperPrint generateJasperPrint(DynamicReport dr, LayoutManager layoutManager, ResultSet resultSet) throws JRException {
    JRDataSource ds = new JRResultSetDataSource(resultSet);
    return generateJasperPrint(dr, layoutManager, ds, new HashMap());
  }

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    if (report == null) {
      throw new IllegalStateException("No main report defined for 'fillReport' - " +
          "specify a 'url' on this view or override 'getReport()' or 'fillReport(Map)'");
    }


    JRDataSource jrDataSource = null;
    DataSource jdbcDataSourceToUse = null;


    // Try model attribute with specified name.
    if (this.reportDataKey != null) {
      Object reportDataValue = model.get(this.reportDataKey);

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