How the issue manifests
When working with a document (e.g., when inserting an item from a price list), the operation crashes with the following error: java.lang.StackOverflowError
What the error means
This error indicates that a method call chain became too deeply nested, resulting in a stack overflow.
This can occur, for example:
due to a circular reference in data (infinite processing loop)
due to repeated event triggering in the user interface (GUI)
or generally due to an uncontrolled repetition of an operation
Examples
1. Fees in the price list
The following can be observed in the log:
cz.winstrom.service.dok.impl.PoplatkyHelper.refreshPoplatkyByCenik(PoplatkyHelper.java:100)
cz.winstrom.service.dok.impl.PolDoklBLImpl.fillPolDoklCenikem(PolDoklBLImpl.java:7067)
cz.winstrom.service.dok.impl.PoplatkyHelper.refreshPoplatkyByCenik(PoplatkyHelper.java:100)
cz.winstrom.service.dok.impl.PolDoklBLImpl.fillPolDoklCenikem(PolDoklBLImpl.java:7067)
an item has an assigned fee
that fee has another fee configured
which refers back to the original fee
How to resolve the issue
In the price list, remove the reference to the same fee.
2. Rendering issue (GUI)
The error can also occur when working with the interface, typically when displaying a large volume of data.
The log will then show repeated calls such as:
at java.awt.AWTEventMulticaster.componentMoved
at java.awt.AWTEventMulticaster.componentResized
👉 This means that:
a component is being repeatedly redrawn / recalculated
a loop is forming in GUI events
How to resolve the issue
reduce the amount of displayed data (apply a filter or a shorter date range)
close and reopen the agenda