Another performance test for creating PDF documents with tables using easytable

PerfTest2.java

    public void perfTest4() throws IOException {

        String outputFileName = "perfTest4.pdf";

        final PDDocument document = new PDDocument();

        java.util.List<Object[]> dataList = new ArrayList<>();
        for (int i = 0; i < 5000; i++) {
            dataList.add(new Object[]{"Whisky", 134.0, 145.0});
            dataList.add(new Object[]{"Beer", 768.0, 677.0});
            dataList.add(new Object[]{"Gin", 456.2, 612.0});
            dataList.add(new Object[]{"Vodka", 302.3, 467.0});
        }

        RepeatedHeaderTableDrawer drawer = RepeatedHeaderTableDrawer.builder()
                .table(createSimpleExampleTable(dataList.toArray(new Object[][]{})))
                .startX(30)
                .startY(775F)
                .endY(25F) // note: if not set, table is drawn over the end of the page
                .build();

        //for (int i = 0; i < 400; i++) {
            do {
                PDPage page = new PDPage(new PDRectangle(1150,800));
                document.addPage(page);
                try (PDPageContentStream contentStream = new PDPageContentStream(document, page)) {
                    drawer.contentStream(contentStream).draw();
                }
                drawer.startY(page.getMediaBox().getHeight() - 50); //50 is each page height
            } while (!drawer.isFinished());
        //}

        document.save(TARGET_FOLDER + "/" + outputFileName);
        document.close();
    }


    private Table createSimpleExampleTable(Object[][] data) {
        // Define the table structure first
        final Table.TableBuilder tableBuilder = Table.builder()
                .addColumnsOfWidth(100, 50, 50, 50)
                .fontSize(8)
                .font(HELVETICA)
                .borderColor(Color.WHITE);

        // Add the header row ...
        final Row headerRow = Row.builder()
                .add(TextCell.builder().text("Product").horizontalAlignment(LEFT).borderWidth(1).build())
                .add(TextCell.builder().text("2018").borderWidth(1).build())
                .add(TextCell.builder().text("2019").borderWidth(1).build())
                .add(TextCell.builder().text("Total").borderWidth(1).build())
                .backgroundColor(BLUE_DARK)
                .textColor(Color.WHITE)
                .font(PDType1Font.HELVETICA_BOLD).fontSize(9)
                .horizontalAlignment(CENTER)
                .build();

        tableBuilder.addRow(headerRow);

        // ... and some data rows
        double grandTotal = 0;
        for (int i = 0; i < data.length; i++) {
            final Object[] dataRow = data[i];
            final double total = (double) dataRow[1] + (double) dataRow[2];
            grandTotal += total;

            tableBuilder.addRow(Row.builder()
                    .add(TextCell.builder().text(String.valueOf(dataRow[0])).horizontalAlignment(LEFT).borderWidth(1).build())
                    .add(TextCell.builder().text(dataRow[1] + " €").borderWidth(1).build())
                    .add(TextCell.builder().text(dataRow[2] + " €").borderWidth(1).build())
                    .add(TextCell.builder().text(total + " €").borderWidth(1).build())
                    .backgroundColor(i % 2 == 0 ? BLUE_LIGHT_1 : BLUE_LIGHT_2)
                    .horizontalAlignment(RIGHT)
                    .build())
                    .wordBreak(true);
        }

        // Add a final row
        tableBuilder.addRow(Row.builder()
                .add(TextCell.builder().text("This spans over 3 cells, is right aligned and its text is so long that it even breaks. " +
                        "Also it shows the grand total in the next cell and furthermore vertical alignment is shown:")
                        .colSpan(3)
                        .lineSpacing(1f)
                        .borderWidthTop(1)
                        .textColor(WHITE)
                        .backgroundColor(BLUE_DARK)
                        .fontSize(6)
                        .font(HELVETICA_OBLIQUE)
                        .borderWidth(1)
                        .build())
                .add(TextCell.builder().text(grandTotal + " €").backgroundColor(LIGHT_GRAY)
                        .font(HELVETICA_BOLD_OBLIQUE)
                        .verticalAlignment(VerticalAlignment.TOP)
                        .borderWidth(1)
                        .build())
                .horizontalAlignment(RIGHT)
                .build());

        return tableBuilder.build();
    }