TAILIEUCHUNG - Pentaho Reporting 3.5 for Java Developers- P2

Tham khảo tài liệu 'pentaho reporting for java developers- p2', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Chapter 2 The report canvas shown in the center of the previous screenshot is where you define the look of your report. Note that at this point you haven t decided if the report will be rendered as PDF RTF or Excel. In fact any report definition can be rendered in all of those formats. Therefore at this point you do not have to worry about that. The report canvas contains a set of bands that together make up a report. Bands include the Report Header and Report Footer individual Group Header and Group Footer bands as well as a Details band that is rendered for each row of data. Reports may also contain a page header and footer. To the left of the canvas is a palette where you can choose the various report elements you would like to include in your report such as labels fields and graphics. You can drag-and-drop these report elements into the various sections of the report canvas. To the right of the canvas is the Structure tab and Data tab. Below these tabs the details of the currently selected structure or data item are displayed. The Master Report structure tree includes details about every report object displayed on the report canvas while the report data tree includes details about the report s data source information parameters and functions. Below the canvas is an optional messages panel that displays help warning and error messages that help you understand what might be wrong with your report. An example message might be an undefined field warning. You can hide any of the panels around the canvas by changing their visibility within the Window menu. This can help manage your screen while designing reports. You ll now begin to create a very basic report with the Report Designer. 33 Pentaho Reporting Client and Enterprise Examples Creating and configuring your first data source First you need to define a dataset that you want to report on. To keep things simple this example will have you enter some example data into a table dataset. Click on the Data tab on the

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