Hacktoberfest 2026：维护者为十月标记出来的 issue，仍然开放、适合新手。 浏览 Hacktoberfest issue

Enum fields trimmed when they shouldn't be

未关闭
  • 哪里不对？
#3,748 2 条评论 0 个 reaction 已指派 0 人 在 GitHub 查看

维护者通常 2 天内回复

还没有人认领这个 Issue。

评估

难度
3/5
预计耗时
1-2 天
新手友好度
48/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
停滞
技术栈
java
领域
backend

调研方向

Start by tracing how Phoebus reads and writes enum string values for PVs, focusing on where trailing whitespace may be trimmed. Reproduce the reported mismatch with an IOC enum value that ends in whitespace, using both CA and PVA if available. Done means the written value preserves the whitespace and the IOC accepts the matching choice.

由索引模型根据 Issue 内容生成。

描述

MBBO ZRST-FFST fields in an IOC can be defined with trailing whitespace, and Phoebus correctly reads these in.
However, it appears that when Phoebus writes these strings to a PV it trims the whitespace, and sends this to try and match the value with the IOC, but it no longer matches as it is missing the trailing whitespace.
This causes the following error in the IOC:

recGblRecordError: <string_to_you_tried_to_set> Illegal choice PV: <record_name>

and the following error in Phoebus (when using CA):

Exception occured, code: gov.aps.jca.CAStatus\[PUTFAIL=20,WARNING=0\]=Could not perform a database value put for that channel, message: '<record_name>'.

or if using PVA it causes a much longer error message (~700 lines). Here is a snippet of that error:

WARNING [org.csstudio.display.builder.runtime] Widget Combo Box write error for value short test
java.lang.Exception: Cannot write <string_to_you_tried_to_set> to PV pva://<record_name>
        at org.csstudio.display.builder.runtime.pv.RuntimePV.write(RuntimePV.java:114)
        at org.csstudio.display.builder.runtime.WidgetRuntime.writePrimaryPV(WidgetRuntime.java:382)
        at org.csstudio.display.builder.runtime.RuntimeUtil$1.handleWrite(RuntimeUtil.java:52)
        at org.csstudio.display.builder.representation.ToolkitRepresentation.fireWrite(ToolkitRepresentation.java:682)
        at org.csstudio.display.builder.representation.javafx.widgets.ComboRepresentation.confirm(ComboRepresentation.java:198)
        at org.csstudio.display.builder.representation.javafx.widgets.ComboRepresentation.lambda$createJFXNode$0(ComboRepresentation.java:78)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:138)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:185)
        at java.base/java.lang.Thread.run(Thread.java:1447)
Caused by: java.util.concurrent.TimeoutException
        at java.base/java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:2006)
        at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2141)
        at org.phoebus.pv.pva.PVA_PV.write(PVA_PV.java:197)
        at org.csstudio.display.builder.runtime.pv.RuntimePV.write(RuntimePV.java:110)
        ... 12 more

I would imagine removing whitespace trimming when getting Enum string values would fix this but I am not familiar with Phoebus code.

主要语言
Java
星标
130
派生
132
平均合并
3 天 1 小时
30 天内合并 PR
24

环境准备

  • 没有 Dockerfile 或 Docker Compose 文件
  • 有 Pull Request 模板
  • 没有贡献指南

从这里开始

  1. 先读完整个 Issue，再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库，在一个分支上完成修改。
  4. 提交 Pull Request，并在描述里引用这个 Issue 编号。

ControlSystemStudio/phoebus 的其他 Issue

查看 ControlSystemStudio/phoebus 的全部 Issue

相似的 Issue

更多 Java Issue

把新 issue 发到你的邮箱

精选适合新手参与的 GitHub issue 摘要。