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https://issues.apache.org/jira/browse/LOG4J2-1507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Gregory resolved LOG4J2-1507.
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Resolution: Fixed
In Git master.
> Allow Builders to be completely generic
> ---------------------------------------
>
> Key: LOG4J2-1507
> URL: https://issues.apache.org/jira/browse/LOG4J2-1507
> Project: Log4j 2
> Issue Type: New Feature
> Components: Configurators
> Reporter: Gary Gregory
> Assignee: Gary Gregory
> Fix For: 2.7
>
>
> Allow Builders to be completely generic. This is not just supporting
> {{Builder<T>}}, which works in 2.6.2, but to allow declarations like
> {{Builder<B extends Builder<B>>}} combined with setters that return {{B}}.
> {code:java}
> public static class Builder<B extends Builder<B>> implements
> org.apache.logging.log4j.core.util.Builder<ValidatingPluginWithGenericBuilder>
> {
> @PluginBuilderAttribute
> @Required(message = "The name given by the builder is null")
> private String name;
> public B withName(final String name) {
> this.name = name;
> return asBuilder();
> }
> @SuppressWarnings("unchecked")
> private B asBuilder() {
> return (B) this;
> }
> @Override
> public ValidatingPluginWithGenericBuilder build() {
> return new ValidatingPluginWithGenericBuilder(name);
> }
> }
> {code}
> (I have a patch for this)
> (The next step (and ticket) will be to allow to use a Builder that extends
> another Builder.)
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