jcov template usage

[Alexey Fedorchenko]

Yes, with this approach all excluded methods will be “forgotten” in the report.
You can look at ANC filters (accept non coverage): these filters mark methods 
with the yellow colour - "not covered but also should not be covered for this report”.
This approach will give you full total coverage for the class. 

The option for repgen command is “ancfilter”, you need to provide implementation for
AncFilter interface (almost the same except the getAncReason method for tooltip in 
the report - why the method is marked as yellow).


—Alexey

> On 06 Apr 2016, at 22:19, José Cornado <jose.cornado at gmail.com> wrote:
> 
> thanks!
> 
> 
> I think I can work with the custom filter suggestion. Another silly question:
> 
> Do the stats reflect the new totals? For instance, are the total number of lines restricted to the filtered methods?
> 
> Again, thanks!
> 
> On Wed, Apr 6, 2016 at 12:45 PM, Alexey Fedorchenko <Alexey.Fedorchenko at oracle.com <mailto:Alexey.Fedorchenko at oracle.com>> wrote:
> Hello!
> 
>   Thank you for using JCov.
> 
>> I was
>> wondering how to use the template.xml lists.
> Are you trying to filter instrumentation? If you mean “include_list”/“exclude_list” options 
> for Instr command, the effect will be the same as using multiple “include”/“exclude” options.
> 
>> Is there a way to tell jcov to instrument coverage for an specific method
>> alone?
> We have a request for custom logic to exclude instrumentation points 
> https://bugs.openjdk.java.net/browse/CODETOOLS-7901341 <https://bugs.openjdk.java.net/browse/CODETOOLS-7901341>
> If the goal is to receive coverage report for an specific method, you can instrument the class 
> and filter the specific method with the repgen command option “filter” (report generation command
>  with custom filtering plugin class).
> 
> For an example:
> public class CustomFilter implements FilterSpi {
> 
>     class MyF implements MemberFilter {
> 
>         /**
>          * Rejects classes which name contains "1"
>          */
>         public boolean accept(DataClass clazz) {
>             return clazz.getFullname().indexOf("1") < 0;
>         }
> 
>         /**
>          * Accpept only those methods which names ends with a digit.
>          */
>         public boolean accept(DataClass dc, DataMethod dm) {
>             String name = dm.getName();
>             char last = name.charAt(name.length() - 1);
>             return Character.isDigit(last);
>         }
> 
>         /**
>          * No fields accepted.
>          */
>         public boolean accept(DataClass dc, DataField df) {
>             return false;
>         }
> 
>     }
> 
>     public MemberFilter getFilter() {
>         return new MyF();
>     }
> 
> }
> 
> You can find some general instrumentation process description at 
> https://wiki.openjdk.java.net/display/CodeTools/JCov+FAQ <https://wiki.openjdk.java.net/display/CodeTools/JCov+FAQ>
> 
> 
> —Alexey
> 
> 
>> On 06 Apr 2016, at 05:06, José Cornado <jose.cornado at gmail.com <mailto:jose.cornado at gmail.com>> wrote:
>> 
>> Hello!
>> 
>> I am trying to use jcov as a part of a tool (an ide plugin) and I was
>> wondering how to use the template.xml lists.
>> 
>> Is there a way to tell jcov to instrument coverage for an specific method
>> alone?
>> 
>> thanks in advance
>> 
>> -- 
>> José Cornado
>> 
>> --
>> 
>> home: http://www.efekctive.com <http://www.efekctive.com/>
>> blog:   http://blogging.efekctive.com <http://blogging.efekctive.com/>
>> ----------------------
>> 
>> Everything has been said before, but since nobody listens we have to keep
>> going back and beginning all over again.
>> 
>> Andre Gide
> 
> 
> 
> 
> -- 
> José Cornado
> 
> --
> 
> home: http://www.efekctive.com <http://www.efekctive.com/>
> blog:   http://blogging.efekctive.com <http://blogging.efekctive.com/>
> ----------------------
> 
> Everything has been said before, but since nobody listens we have to keep going back and beginning all over again.
> 
> Andre Gide