[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Sun updated GROOVY-9075:
---
Fix Version/s: (was: 3.0.0-beta-4)
> The exception message should be more clear when a GroovyObject's metaClass is
> wrong
> ---
>
> Key: GROOVY-9075
> URL: https://issues.apache.org/jira/browse/GROOVY-9075
> Project: Groovy
> Issue Type: Bug
> Components: groovy-runtime
>Affects Versions: 2.4.16, 3.0.0-alpha-4, 2.5.6
>Reporter: Xiaoguang Wang
>Assignee: Daniel Sun
>Priority: Major
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
> instance may cause an exception with unclear message.
>
> We have met the problem too many times and have spent a lot of time on
> debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
>
> If there is a try-catch (or some other check) in the runtime code and report
> this problem more clearly, it will save everyone's time to debug. Or, is
> there any better solution to this problem, eg: check the class type in
> `MetaClassImpl.setProperty`, `DefaultGroovyMethods.setMetaClass` ?
>
> {code:java}
> import groovy.transform.CompileStatic
> //@CompileStatic
> class C1 {
> int x
> }
> //@CompileStatic
> class C2 {
> int x
> }
> //@CompileStatic
> class TestGroovy {
> static void main(String[] args) {
> def c1 = new C1()
> def c2 = new C2()
> c1.metaClass = c2.metaClass //eg:
> org.springframework.beans.BeanUtils.copyProperties
> // or c1.setMetaClass(c2.getMetaClass())
> c1.x += 1 // crash here with unclear exception, but c1.setX() works
> }
> }
> {code}
>
> {code:java}
> /*
> without @CompileStatic
> Exception in thread "main" java.lang.IllegalArgumentException: object is not
> an instance of declaring class
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>at java.lang.reflect.Method.invoke(Method.java:498)
>at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
>at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
>at
> org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
>at
> org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
>at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
> with @CompileStatic
> Exception in thread "main" java.lang.IllegalArgumentException: object is not
> an instance of declaring class
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>at java.lang.reflect.Method.invoke(Method.java:498)
>at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
>at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
>at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
>at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
>at C1.setProperty(TestGroovy.groovy)
>at
> org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
>at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
> */
> {code}
--
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[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Sun updated GROOVY-9075:
---
Fix Version/s: 3.0.0-beta-4
> The exception message should be more clear when a GroovyObject's metaClass is
> wrong
> ---
>
> Key: GROOVY-9075
> URL: https://issues.apache.org/jira/browse/GROOVY-9075
> Project: Groovy
> Issue Type: Bug
> Components: groovy-runtime
>Affects Versions: 2.4.16, 3.0.0-alpha-4, 2.5.6
>Reporter: Xiaoguang Wang
>Assignee: Daniel Sun
>Priority: Major
> Fix For: 3.0.0-beta-4
>
>
> If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
> instance may cause an exception with unclear message.
>
> We have met the problem too many times and have spent a lot of time on
> debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
>
> If there is a try-catch (or some other check) in the runtime code and report
> this problem more clearly, it will save everyone's time to debug. Or, is
> there any better solution to this problem, eg: check the class type in
> `MetaClassImpl.setProperty`, `DefaultGroovyMethods.setMetaClass` ?
>
> {code:java}
> import groovy.transform.CompileStatic
> //@CompileStatic
> class C1 {
> int x
> }
> //@CompileStatic
> class C2 {
> int x
> }
> //@CompileStatic
> class TestGroovy {
> static void main(String[] args) {
> def c1 = new C1()
> def c2 = new C2()
> c1.metaClass = c2.metaClass //eg:
> org.springframework.beans.BeanUtils.copyProperties
> // or c1.setMetaClass(c2.getMetaClass())
> c1.x += 1 // crash here with unclear exception, but c1.setX() works
> }
> }
> {code}
>
> {code:java}
> /*
> without @CompileStatic
> Exception in thread "main" java.lang.IllegalArgumentException: object is not
> an instance of declaring class
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>at java.lang.reflect.Method.invoke(Method.java:498)
>at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
>at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
>at
> org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
>at
> org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
>at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
> with @CompileStatic
> Exception in thread "main" java.lang.IllegalArgumentException: object is not
> an instance of declaring class
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>at java.lang.reflect.Method.invoke(Method.java:498)
>at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
>at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
>at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
>at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
>at C1.setProperty(TestGroovy.groovy)
>at
> org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
>at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
> */
> {code}
--
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[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Affects Version/s: 2.4.16
> The exception message should be more clear when a GroovyObject's metaClass is
> wrong
> ---
>
> Key: GROOVY-9075
> URL: https://issues.apache.org/jira/browse/GROOVY-9075
> Project: Groovy
> Issue Type: Bug
> Components: groovy-runtime
>Affects Versions: 2.4.16, 3.0.0-alpha-4, 2.5.6
>Reporter: Xiaoguang Wang
>Priority: Major
>
> If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
> instance may cause an exception with unclear message.
>
> We have met the problem too many times and have spent a lot of time on
> debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
>
> If there is a try-catch (or some other check) in the runtime code and report
> this problem more clearly, it will save everyone's time to debug. Or, is
> there any better solution to this problem, eg: check the class type in
> `MetaClassImpl.setProperty`, `DefaultGroovyMethods.setMetaClass` ?
>
> {code:java}
> import groovy.transform.CompileStatic
> //@CompileStatic
> class C1 {
> int x
> }
> //@CompileStatic
> class C2 {
> int x
> }
> //@CompileStatic
> class TestGroovy {
> static void main(String[] args) {
> def c1 = new C1()
> def c2 = new C2()
> c1.metaClass = c2.metaClass //eg:
> org.springframework.beans.BeanUtils.copyProperties
> // or c1.setMetaClass(c2.getMetaClass())
> c1.x += 1 // crash here with unclear exception, but c1.setX() works
> }
> }
> {code}
>
> {code:java}
> /*
> without @CompileStatic
> Exception in thread "main" java.lang.IllegalArgumentException: object is not
> an instance of declaring class
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>at java.lang.reflect.Method.invoke(Method.java:498)
>at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
>at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
>at
> org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
>at
> org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
>at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
> with @CompileStatic
> Exception in thread "main" java.lang.IllegalArgumentException: object is not
> an instance of declaring class
>at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>at java.lang.reflect.Method.invoke(Method.java:498)
>at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
>at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
>at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
>at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
>at C1.setProperty(TestGroovy.groovy)
>at
> org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
>at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
> */
> {code}
--
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[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Description:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug. Or, is there
any better solution to this problem, eg: check the class type in
`MetaClassImpl.setProperty`, `DefaultGroovyMethods.setMetaClass` ?
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
// or c1.setMetaClass(c2.getMetaClass())
c1.x += 1 // crash here with unclear exception, but c1.setX() works
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at C1.setProperty(TestGroovy.groovy)
at
org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
*/
{code}
was:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug. Or, is there
any better solution to this problem, eg: check the class type in
`MetaClassImpl.setProperty`, `DefaultGroovyMethods.setMetaClass` ?
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Description:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug. Or, is there
any better solution to this problem, eg: check the class type in
`MetaClassImpl.setProperty`, `DefaultGroovyMethods.setMetaClass` ?
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at C1.setProperty(TestGroovy.groovy)
at
org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
*/
{code}
was:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug. Or, is there
any better solution to this problem, eg: check the class type in
`MetaClassImpl.setProperty` ?
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Description:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug. Or, is there
any better solution to this problem, eg: check the class type in
`MetaClassImpl.setProperty` ?
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at C1.setProperty(TestGroovy.groovy)
at
org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
*/
{code}
was:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug. Or, is there
any better solution to this problem?
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in
[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Description:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug. Or, is there
any better solution to this problem?
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at C1.setProperty(TestGroovy.groovy)
at
org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
*/
{code}
was:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug.
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at
[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Description:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug.
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass //eg:
org.springframework.beans.BeanUtils.copyProperties
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at C1.setProperty(TestGroovy.groovy)
at
org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
*/
{code}
was:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug.
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Description:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch (or some other check) in the runtime code and report
this problem more clearly, it will save everyone's time to debug.
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at C1.setProperty(TestGroovy.groovy)
at
org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
*/
{code}
was:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch in the runtime code and report this problem more
clearly, it will save everyone's time to debug.
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
[jira] [Updated] (GROOVY-9075) The exception message should be more clear when a GroovyObject's metaClass is wrong
[
https://issues.apache.org/jira/browse/GROOVY-9075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoguang Wang updated GROOVY-9075:
---
Description:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch in the runtime code and report this problem more
clearly, it will save everyone's time to debug.
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass
c1.x += 1 // crash here with unclear exception
}
}
{code}
{code:java}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2726)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3785)
at C1.setProperty(TestGroovy.groovy)
at
org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:213)
at
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:497)
*/
{code}
was:
If a GroovyObject's metaClass is overwritten by mistake, the accesses to the
instance may cause an exception with unclear message.
We have met the problem too many times and have spent a lot of time on
debugging (and teaching everyone never to use `BeanUtils.copyProperties`, etc)
If there is a try-catch in the runtime code and report this problem more
clearly, it will save everyone's time to debug.
{code:java}
import groovy.transform.CompileStatic
//@CompileStatic
class C1 {
int x
}
//@CompileStatic
class C2 {
int x
}
//@CompileStatic
class TestGroovy {
static void main(String[] args) {
def c1 = new C1()
def c2 = new C2()
c1.metaClass = c2.metaClass
c1.x += 1 // crash here with unclear exception
}
}
/*
without @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at
org.codehaus.groovy.runtime.metaclass.MethodMetaProperty$GetBeanMethodMetaProperty.getProperty(MethodMetaProperty.java:76)
at
org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:85)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:299)
with @CompileStatic
Exception in thread "main" java.lang.IllegalArgumentException: object is not an
instance of declaring class
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at
