STC: NullPointerException for raw type guard followed by parameterized method call
#1349
Comments
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You can debug your eclipse process by adding this to eclipse.ini: Then you can connect from any new java workspace using a Remote Java Application launch config set to port 5005. From there just add exception breakpoint for NullPointerException to get a stack in the Debug perspective. |
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Here it is: |
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Thanks. You can also back up the stack and see what file and what part of this file has the issue. The |
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The That method source is: void cleanEmptyValues(Object... beans) {
if(beans)
beans.each { bean ->
if(bean)
bean.properties.each { key, value ->
if(value instanceof IdentifiableDto || value instanceof ModelObject)
cleanEmptyValues(value)
else if(value instanceof Iterable)
value.each { cleanEmptyValues(it) }
else if(value instanceof String && value.toString().trim() == '')
bean[(String) key] = null
}
}
} |
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Can you try casting "it" to |
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Unfortunately, adding that cast doesn't make any difference. The exception is the same, as well as the involved |
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I can make the problem go away if I change both recursive void cleanEmptyValues(Object... beans) {
if(beans)
beans.each { bean ->
if(bean)
bean.properties.each { key, value ->
if(value instanceof IdentifiableDto || value instanceof ModelObject)
cleanEmptyValues([value])
else if(value instanceof Iterable)
value.each { cleanEmptyValues([it]) }
else if(value instanceof String && value.toString().trim() == '')
bean[(String) key] = null
}
}
} |
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Sorry, I meant to say cast "value" since that is what was tested against Iterable: |
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I have to cast both |
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The issue starts because the extension method Two typecasts have been inserted below that should get rid of the raw-type funging: void cleanEmptyValues(Object... beans) {
beans?.each { bean ->
if (bean) ((Map<String,Object>)bean.properties).each { key, value ->
if (value instanceof IdentifiableDto || value instanceof ModelObject)
cleanEmptyValues(value)
else if (value instanceof Iterable)
((Iterable<Object>)value).each { cleanEmptyValues(it) }
else if (value instanceof String && value.trim().isEmpty())
bean[key] = null
}
}
}https://issues.apache.org/jira/browse/GROOVY-10527 |
eric-milles
changed the title
NullPointerException for raw type guard followed by parameterized method call
eric-milles
added a commit
that referenced
this issue
Mar 29, 2022
GROOVY-9968, GROOVY-10327, GROOVY-10528
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I confirm this does not happen any more with 4.6.0.v202204021925-e2112. |
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Using Greclipse 4.5.0.v202203070924-e2112.
Using Groovy 2.5.16 in my project build path.
One of my projects has started to fail Groovy compilation within Eclipse with this error:
On the groovy console I find this:
This is a huge proprietary project, so I have no idea on how to cut it down. Is there something I can share with you to understand what's wrong? Maybe the contents of the affected class?
It seems like removing
@CompileStaticfrom this class and issue a full project rebuild fixes the error.This same project compiles fine with Gradle.
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