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how to delete class.attribute(property) [message #473639]

Fri, 29 June 2007 17:37

Messages: 13
Registered: July 2009

Junior Member

Hi All:
I have a class. Some of attribtues are private members, and I'd like to
programtically delete all private members and only keep public
class.members. When running following code, it throws exception
org.eclipse.emf.common.util.BasicEList$EIterator.checkModCou nt. Could any
one help to see what's wrong?

List attList = clz.getAttributes();
ListIterator lstIt = attList.listIterator(attList.size());
while(lstIt.hasPrevious()){
Property prpt = (Property) lstIt.previous();
vk = prpt.getVisibility().getValue();
if (vk == VisibilityKind.PRIVATE){
System.out.println("Destroy property: " + prpt.getQualifiedName());
prpt.destroy();
}
}
Thanks!
JD

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Re: how to delete class.attribute(property) [message #473760 is a reply to message #473639]

Thu, 05 July 2007 12:36

Kenn Hussey

Messages: 1620
Registered: July 2009

Senior Member

JD,

This is effectively a concurrent modification exception - you're modifying
the contents of the list of attributes while iterating over it. To work
around this, you can either iterate over the owned attributes instead and
remove each property via the iterator before destroying it, or make a
defensive copy of the attributes list before iterating over it.

Kenn

"JD" <jingdong.li@gmail.com> wrote in message
news:009289687d2f1c3046910ede1e8ba02e$1@www.eclipse.org...
> Hi All:
> I have a class. Some of attribtues are private members, and I'd like to
> programtically delete all private members and only keep public
> class.members. When running following code, it throws exception
> org.eclipse.emf.common.util.BasicEList$EIterator.checkModCou nt. Could any
> one help to see what's wrong?
>
> List attList = clz.getAttributes();
> ListIterator lstIt = attList.listIterator(attList.size());
> while(lstIt.hasPrevious()){
> Property prpt = (Property) lstIt.previous();
> vk = prpt.getVisibility().getValue();
> if (vk == VisibilityKind.PRIVATE){
> System.out.println("Destroy property: " + prpt.getQualifiedName());
> prpt.destroy();
> }
> }
> Thanks!
> JD
>
>
>

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Re: how to delete class.attribute(property) [message #473943 is a reply to message #473760]

Tue, 10 July 2007 15:07

Messages: 13
Registered: July 2009

Junior Member

Thanks Kenn!

JD

Kenn Hussey wrote:

> JD,

> This is effectively a concurrent modification exception - you're modifying
> the contents of the list of attributes while iterating over it. To work
> around this, you can either iterate over the owned attributes instead and
> remove each property via the iterator before destroying it, or make a
> defensive copy of the attributes list before iterating over it.

> Kenn

> "JD" <jingdong.li@gmail.com> wrote in message
> news:009289687d2f1c3046910ede1e8ba02e$1@www.eclipse.org...
>> Hi All:
>> I have a class. Some of attribtues are private members, and I'd like to
>> programtically delete all private members and only keep public
>> class.members. When running following code, it throws exception
>> org.eclipse.emf.common.util.BasicEList$EIterator.checkModCou nt. Could any
>> one help to see what's wrong?
>>
>> List attList = clz.getAttributes();
>> ListIterator lstIt = attList.listIterator(attList.size());
>> while(lstIt.hasPrevious()){
>> Property prpt = (Property) lstIt.previous();
>> vk = prpt.getVisibility().getValue();
>> if (vk == VisibilityKind.PRIVATE){
>> System.out.println("Destroy property: " + prpt.getQualifiedName());
>> prpt.destroy();
>> }
>> }
>> Thanks!
>> JD
>>
>>
>>

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