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下载Stimulsoft Reports Java最新版本

此示例项目显示了使用关系和自定义对象数据库在运行时创建报表的可能性。

首先，创建一个将存储数据的对象类。

public class ObjectCell {
    public String val;
 
    @Override
    public boolean equals(Object obj) {
        return val.equals(((ObjectCell) obj).val);
    }
 
    public String toString() {
        return val;
    }
 
    public ObjectCell(String val) {
        this.val = val;
    }
}

接下来，创建从StiDatabase类扩展的父数据库并填充connect事件上的数据。

public class ParentDatabase extends StiDatabase {
 
    public ParentDatabase() {
        super("Demo.Parent");// Database name
    }
 
    public void connect(StiDataStoreSource stiDataStoreSource, Boolean fillTable) throws StiException {
        DataTable dataTable = stiDataStoreSource.createNewTable();
        for (int i = 0; i < 5; i++) {
            DataRow dataRow = dataTable.createNewRow();
            dataRow.addCell("cId", new ObjectCell("Object" + i));
            dataRow.addCell("cName", "Parent cId: " + i);
        }
        stiDataStoreSource.setDataTable(dataTable);
    }
 
    public void disconnect() {
    }
 
    public void connect(StiDataStoreSource stiDataStoreSource) throws StiException {
        connect(stiDataStoreSource, true);
    }
}

接下来，创建相同的子数据库。

public class ChildDatabase extends StiDatabase {
 
    public ChildDatabase() {
        super("Demo.Child");// Database name
    }
 
    public void connect(StiDataStoreSource stiDataStoreSource, Boolean fillTable) throws StiException {
        DataTable dataTable = stiDataStoreSource.createNewTable();
        for (int i = 0; i < 5; i++) {
            for (int k = 0; k < 5; k++) {
                DataRow dataRow = dataTable.createNewRow();
                dataRow.addCell("cId", new ObjectCell("Object" + i));
                for (int j = 1; j < dataRow.getColumns().size(); j++) { // fill row wiht my data
                    dataRow.addCell(dataRow.getColumns().get(j).getColumnName(), "Child cId: " + i + " value: " + j);
                }
            }
        }
        stiDataStoreSource.setDataTable(dataTable);
    }
 
    public void disconnect() {
    }
 
    public void connect(StiDataStoreSource stiDataStoreSource) throws StiException {
        connect(stiDataStoreSource, true);
    }
}

要显示报表，我们需要创建Java查看器。创建JFrame，设置必要的选项并添加查看器控件。

public class CreateRelationsReport extends JPanel {
 
    private static final long serialVersionUID = 330448692680237867L;
    private static final Dimension FRAME_SIZE = new Dimension(800, 800);
    public static void main(final String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                try {
                    JFrame frame = new JFrame();
                    frame.add(new CreateRelationsReport(frame));
                    frame.setSize(FRAME_SIZE);
                    frame.setLocationRelativeTo(null);
                    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    frame.setVisible(true);
                } catch (Throwable e) {
                    StiExceptionProvider.show(e, null);
                }
            }
        });
    }
    public CreateRelationsReport(final JFrame parentFrame) throws IOException {
    setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
    setPreferredSize(FRAME_SIZE);
    StiViewerFx viewerPanel = new StiViewerFx(parentFrame);
    add(viewerPanel);
...

接下来，创建新的报表对象，然后将父数据库和子数据库添加到其中。

...
    StiReport report = new StiReport();
 
    StiPage page = new StiPage(report);
    report.getPages().add(page);
    page.setName(StiNameCreation.createName(report, StiNameCreation.generateName(page)));
    report.setDictionary(new StiDictionary(report));
    report.getDictionary().getDatabases().add(new ParentDatabase());
    report.getDictionary().getDatabases().add(new ChildDatabase());
...

接下来，在对象表源中设置自定义列。

...
    List<StiDataTableSource> tableSources = new ArrayList<StiDataTableSource>();
    // parent
    StiDataTableSource tSource = new StiDataTableSource("Demo.Parent", "Parent", "Parent");
    tSource.setColumns(new StiDataColumnsCollection());
    tSource.getColumns().add(
        new StiDataColumn("cId", "cId", StiSystemType.getSystemType("System.Object")));
    tSource.getColumns().add(
        new StiDataColumn("cName", "cName", StiSystemType.getSystemType("System.String")));
    tSource.setDictionary(report.getDictionary());
    report.getDictionary().getDataSources().add(tSource);
    tableSources.add(tSource);
    // child
    tSource = new StiDataTableSource("Demo.Child", "Child", "Child");
    tSource.setColumns(new StiDataColumnsCollection());
    tSource.getColumns().add(
        new StiDataColumn("cId", "cId", StiSystemType.getSystemType("System.Object")));
    for (int i = 0; i < 4; i++) {
        tSource.getColumns().add(
           new StiDataColumn("cData" + i, "cData" + i,
           StiSystemType.getSystemType("System.String")));
    }
    tSource.setDictionary(report.getDictionary());
    report.getDictionary().getDataSources().add(tSource);
    tableSources.add(tSource);
...

将带有文本框的标题区带和数据带添加到报表中。

...
    // Create TitleBand
    StiHeaderBand titleBand = new StiHeaderBand();
    titleBand.setHeight(0.85);
    titleBand.setName("TitleBand");
    page.getComponents().add(titleBand);
 
    // Create Title text on header
    StiText headerText = new StiText(new StiRectangle(0, 0, page.getWidth(), 0.85));
    headerText.setTextInternal("Tacticdescription");
    headerText.setHorAlignment(StiTextHorAlignment.Left);
    headerText.setName("TitleHeader");
    headerText.setFont(new StiFont("Arial", 12F, StiFontStyle.Bold));
    titleBand.getComponents().add(headerText);
    Integer nameIndex = 1;
    List<StiDataBand> dataBands = new ArrayList<StiDataBand>();
    for (StiDataTableSource tableSource : tableSources) {
 
        // Create Databand
        StiDataBand dataBand = new StiDataBand();
        dataBand.setDataSourceName(tableSource.getName());
        dataBand.setHeight(0.5);
        dataBand.setName("DataBand" + nameIndex);
        nameIndex++;
        page.getComponents().add(dataBand);
 
        double pos = 0;
        double columnWidth = page.getWidth() / tableSource.getColumns().size();
 
        for (StiDataColumn dataColumn : tableSource.getColumns()) {
 
            StiText dataText = new StiText(new StiRectangle(pos, 0, columnWidth, 0.5));
            dataText.setText("{" + tableSource.getName() + "." + dataColumn.getName() + "}");
            dataText.setName("DataText" + nameIndex.toString());
            dataText.getBorder().setSide(StiBorderSides.All);
            dataBand.getComponents().add(dataText);
 
            pos = pos + columnWidth;
            nameIndex++;
        }
        dataBands.add(dataBand);
    }
...

创建报表的所有组件，我们现在可以配置数据关系。

...
    dataBands.get(1).setDataRelationName("Relation");
    dataBands.get(1).setMasterComponent(dataBands.get(0));
 
    ArrayList<String> cols = new ArrayList<String>();
    cols.add("cId");
 
    StiDataRelation rel = new StiDataRelation("Relation", tableSources.get(0),
    tableSources.get(1), cols, cols);
 
    report.getDictionary().getRelations().add(rel);
...

最后，渲染报表并在Java查看器中显示它。

...
    report.Render();
 
    viewerPanel.getStiViewModel()
        .getEventDispatcher()
        .dispatchStiEvent(
            new StiViewCommonEvent(StiViewCommonEvent.DOCUMENT_FILE_LOADED,
            new StiDocument(report), null));
}

示例代码的结果如下图所示：

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