public void buildReport()

in birt/src/main/java/org/apache/ofbiz/birt/flexible/ReportDesignGenerator.java [114:239]
98 lines of code
9 McCabe index (conditional complexity)

    public void buildReport() throws IOException, GeneralException, BirtException {
        DesignConfig config = new DesignConfig();
        Platform.startup();
        IDesignEngine engine = ((IDesignEngineFactory) Platform.createFactoryObject(
                IDesignEngineFactory.EXTENSION_DESIGN_ENGINE_FACTORY)).createDesignEngine(config);

        // creating main design elements
        SessionHandle session = engine.newSessionHandle(ULocale.forLocale(locale));
        design = session.createDesign();
        factory = design.getElementFactory();
        DesignElementHandle element = factory.newSimpleMasterPage("Page Master");
        design.getMasterPages().add(element);

        // create DataSource call
        createScriptedDataSource();

        // create DataSet call
        createScriptedDataset();

        // General design parameters
        design.setLayoutPreference(DesignChoiceConstants.REPORT_LAYOUT_PREFERENCE_AUTO_LAYOUT);
        design.setBidiOrientation(DesignChoiceConstants.BIDI_DIRECTION_LTR);
        design.setDefaultUnits(DesignChoiceConstants.UNITS_IN);
        design.setCreatedBy(design.getVersion());
        design.setImageDPI(96);

        // adding filters as parameters to make them available for design
        // first adding parameters to the design itself
        if (UtilValidate.isNotEmpty(filterMap)) {
            // adding filters within reportDesign if generateFilters is set to true
            GridHandle grid = null;
            int i = 0;
            if (generateFilters) {
                grid = factory.newGridItem(null, 2, filterMap.size());
                design.getBody().add(grid);
                grid.setWidth("100%");
            }

            for (String filter : filterMap.keySet()) {
                String birtType = BirtUtil.convertFieldTypeToBirtParameterType(filterMap.get(filter));
                if (birtType == null) {
                    throw new GeneralException(UtilProperties.getMessage(RES_ERROR, "BirtErrorConversionFieldToBirtFailed", locale));
                }
                // get label
                String displayFilterName;
                if (UtilValidate.isNotEmpty(filterDisplayLabels)) {
                    displayFilterName = filterDisplayLabels.get(filter);
                } else {
                    displayFilterName = filter;
                }
                ScalarParameterHandle scalParam = factory.newScalarParameter(filter);
                // scalParam.setDisplayName(displayFilterName); // TODO has no incidence at all right now, is only displayed when using birt's
                // report parameter system. Not our case. I leave it here if any idea arise of how to translate these.
                scalParam.setPromptText(displayFilterName);
                if ("javaObject".equals(birtType)) { //Fields of type='blob' are rejected by Birt: org.eclipse.birt.report.model.api.metadata
                    // .PropertyValueException: The choice value "javaObject" is not allowed.
                    throw new GeneralException("Fields of type='blob' are rejected by Birt. Create a view entity, based on the requested entity, "
                            + "where you exclude the field of type='blob'");
                } else {
                    scalParam.setDataType(birtType);
                }
                scalParam.setIsRequired(false);
                design.getParameters().add(scalParam);

                if (generateFilters) {
                    RowHandle row = (RowHandle) grid.getRows().get(i);
                    CellHandle cellLabel = (CellHandle) row.getCells().get(0);
                    CellHandle cellFilter = (CellHandle) row.getCells().get(1);
                    LabelHandle label = factory.newLabel(null);
                    label.setText(displayFilterName);
                    cellLabel.getContent().add(label);

                    // 1. create computed column and add it to grid column bindings
                    ComputedColumn computedCol = StructureFactory.createComputedColumn();
                    PropertyHandle computedSet = grid.getColumnBindings();
                    computedCol.setName(displayFilterName);
                    StringBuffer expression = new StringBuffer("params[\"");
                    expression.append(filter);
                    expression.append("\"]");
                    computedCol.setExpression(expression.toString());
                    computedSet.addItem(computedCol);

                    // 2. create data and add computed column to it
                    DataItemHandle data = factory.newDataItem(null);
                    data.setResultSetColumn(computedCol.getName());
                    cellFilter.getContent().add(data);

                    // add visibility rule on row
                    HideRule hideRule = StructureFactory.createHideRule();
                    StringBuffer expressionHide = new StringBuffer(expression);
                    expressionHide.append(".value == null || ");
                    expressionHide.append(expression);
                    expressionHide.append(".value == \"\"");
                    hideRule.setExpression(expressionHide.toString());
                    PropertyHandle propVisHandle = row.getPropertyHandle(ReportItem.VISIBILITY_PROP);
                    propVisHandle.addItem(hideRule);
                    i++;
                }
            }
            // second adding script within beforeFactory filling the parameters with values from inputFields
            createScriptedBeforeFactory();
        }

        /*//################ CODE HERE IF YOU WANT TO ADD GENERATED DESIGN / MAY BE WORTH USING RPTTEMPLATE AND-OR RPTLIBRARY ###################
        GridHandle grid = factory.newGridItem(null, 7, 3);
        design.getBody().add(grid);
        grid.setWidth("100%");
        RowHandle row = (RowHandle) grid.getRows().get(0);
        ImageHandle image = factory.newImage(null);
        CellHandle cell = (CellHandle) row.getCells().get(0);
        cell.getContent().add(image);
        image.setURL("https://ofbiz.apache.org/images/ofbiz_logo.png");
        LabelHandle label = factory.newLabel(null);
        cell = (CellHandle) row.getCells().get(1);
        cell.getContent().add(label);
        label.setText("Dat is dat test !");
        // ################ CODE HERE IF YOU WANT TO ADD GENERATED DESIGN / MAY BE WORTH USING RPTTEMPLATE AND-OR RPTLIBRARY ################### */

        design.saveAs(rptDesignName);
        design.close();
        if (Debug.infoOn()) {
            Debug.logInfo("####### Design generated: " + rptDesignName, MODULE);
        }
        session.closeAll(false);
        Platform.shutdown();
    }