[
https://issues.apache.org/jira/browse/GROOVY-9501?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eric Milles updated GROOVY-9501:
--------------------------------
Description:
Consider the following:
{code:groovy}
class Main extends Outer {
static main(args) {
newInstance().newThread()
}
}
abstract class Outer {
private static volatile boolean flag
protected void newThread() {
Thread thread = new Inner()
thread.start()
thread.join()
}
private final class Inner extends Thread {
void run() {
try {
if (!flag) {
sleep(1000)
}
} catch (Throwable t) {
t.printStackTrace()
}
}
}
}
{code}
In this example, {{Main}} extends {{Outer}} and is the type that is
instantiated and used. {{Inner}} makes reference to private static field
{{flag}} of {{Outer}}. When {{Inner}} is non-static as in this example, it
gets the following error when reading "flag":
{code}
groovy.lang.MissingPropertyException: No such property: flag for class: Main
Possible solutions: class
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:65)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:87)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:309)
at Outer$Inner.run(Script1.groovy:20)
{code}
*Note*: changing {{Inner}} from final to static fixes this specific case.
However, non-static inners that need to be that way are going to have this
problem.
This is possibly related to: GROOVY-8999, et al.
was:
Consider the following:
{code:groovy}
class Main extends Outer {
static main(args) {
newInstance().newThread()
}
}
abstract class Outer {
private static volatile boolean flag
protected void newThread() {
Thread thread = new Inner()
thread.start()
thread.join()
}
private final class Inner extends Thread {
void run() {
try {
if (!flag) {
sleep(1000)
}
} catch (Throwable t) {
t.printStackTrace()
}
}
}
}
{code}
In this example, {{Main}} extends {{Outer}} and is the type that is
instantiated and used. {{Inner}} makes reference to private static field
{{flag}} of {{Outer}}. When {{Inner}} is non-static as in this example, it
gets the following error when reading "flag":
{code}
groovy.lang.MissingPropertyException: No such property: flag for class: Main
Possible solutions: class
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:65)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:87)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:309)
at Outer$Inner.run(Script1.groovy:20)
{code}
*Note*: changing {{Inner}} from final to static fixes this specific case.
However, non-static inners that need to be that way are going to have this
problem.
This is possibly related to: GROOVY-8999
> MissingPropertyException for access to private static field from inner class
> when subclassing
> ---------------------------------------------------------------------------------------------
>
> Key: GROOVY-9501
> URL: https://issues.apache.org/jira/browse/GROOVY-9501
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.5.10
> Reporter: Eric Milles
> Priority: Major
>
> Consider the following:
> {code:groovy}
> class Main extends Outer {
> static main(args) {
> newInstance().newThread()
> }
> }
> abstract class Outer {
> private static volatile boolean flag
> protected void newThread() {
> Thread thread = new Inner()
> thread.start()
> thread.join()
> }
> private final class Inner extends Thread {
> void run() {
> try {
> if (!flag) {
> sleep(1000)
> }
> } catch (Throwable t) {
> t.printStackTrace()
> }
> }
> }
> }
> {code}
> In this example, {{Main}} extends {{Outer}} and is the type that is
> instantiated and used. {{Inner}} makes reference to private static field
> {{flag}} of {{Outer}}. When {{Inner}} is non-static as in this example, it
> gets the following error when reading "flag":
> {code}
> groovy.lang.MissingPropertyException: No such property: flag for class: Main
> Possible solutions: class
> at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:65)
> at
> org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:87)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:309)
> at Outer$Inner.run(Script1.groovy:20)
> {code}
> *Note*: changing {{Inner}} from final to static fixes this specific case.
> However, non-static inners that need to be that way are going to have this
> problem.
> This is possibly related to: GROOVY-8999, et al.
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