如何从子数据集中向报表添加变量? [碧玉] [英] How to add variable from subdataset to report? [Jasper]

问题描述

我有一个子数据集，其中包含要在报表中显示的计算变量.但是，当将此变量拖放到报告中时，会出现以下消息:

I have sub Dataset that include a calculated variable that I want to show in the report. But when dragging and dropping this variable into the report the following message appears:

您将对象从子数据集拖放到报表中，这不是 可能.

You drop an object from a subdataset to the report, this is not possible.

如何克服?

推荐答案

已经有一个解决方案发布在- 解决方案1 ​​

There is a solution which is already posted at - Solution-1

但是，我要发布一组屏幕截图以从UI演示相同的内容-

However, I am posting a set of screenshots to demonstrate the same from UI -

1. 在主数据集中定义var- 注意-计算应设置为System
2. 在子数据集中定义另一个variable-
3. 选择子数据集元素(在示例中为表格)并创建Return Values映射-
4. 在报告中，拖放主数据集中定义的variable并确保将评估设置为Report-

1. Define var in the main data set - Note - Calculation should be set to System
2. Define another variable in the sub data set -
3. Select the sub data set element ( it is a table in the example) and create Return Values mapping -
4. In the report, drag and drop variable defined in the main data set and ensure the evaluation is set to Report -

那应该做到的！

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