jcov template usage

[Alexey Fedorchenko]

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> 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
> blog:   http://blogging.efekctive.com
> ----------------------
> 
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> going back and beginning all over again.
> 
> Andre Gide