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  1. Groovy
  2. GROOVY-9069

assignment in map by named index causes casting error

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 2.5.6
    • Fix Version/s: None
    • Component/s: groovy-runtime
    • Labels:
      None
    • Environment:
      Linux Mint 19.1

      Description

      If I assign a value to a collection via a named index (key name) I get a casting error like so:

      Failed to convert property value of type java.util.LinkedHashMap to required type java.util.Map for property methodConfigNames

      Here is the code in question. This doesn't happen in Groovy 2.4.15. Because Grails 4 is running 2.5.6, many plugins are failing with this error.

      void setMethodConfigNames(Map<String, Map<String, List<String>>> methodConfigNames) {
          methodConfigNames.each { String key, Map<String, List<String>> value ->
              Map<String, List<ConfigAttribute>> configs = [:]
              populateMap configs, value
              methodConfigs[key] = configs // fails
              //methodConfigs.put(key,configs) // works
          }
      }
      

      If this could get resolved it would save a lot of plugins from having to be re-released with the workaround making less confusion about the error. In some cases this works and some it doesn't. Even though I have @CompileStatic set, the issue happens at runtime.

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            • Assignee:
              Unassigned
              Reporter:
              rvanderwerf@gmail.com Ryan Vanderwerf
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              • Created:
                Updated: