I have to create a report where several tables are diplayed below each other. Each table gets its data from a SubDataset and contains none, one or more rows.
For the first version of the report, I've simply ignored the possibility of a table having no rows and put all tables below each other, each with the height of 1 row. The idea was, that if there is more than one row, the table will grow in height, which seems to work fine. I've given the first table a fixed position and set all subsequent ones to float. In iReport it looks like this:
But when I create a report, only the first table is at the expected position. The rest is displayed too low and overlaps:
Any idea how to fix this? I can't use subreports, because the report is stored in a database so I can't reference other reports. Is there maybe another alternative to subreports or tables?
You have the "Position Type" property set to "Fix Relative to Top". Change it to "Float".
Try looking into using subreports. I do create table followed by another (datasource is XML).
- create subreport using xPath
- Use Data Source Expression property of the subreport to set the datasource for subreport
((net.sf.jasperreports.engine.data.JRXmlDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("/FUND_STATEMENT/FUNDS/FUND")
来源：https://stackoverflow.com/questions/9229676/displaying-tables-below-each-other-in-jasperreports