jtulach@101: package org.apidesign.misuse.projectconfig;
jtulach@101: 
jtulach@101: public class ProjectConfigurationCorrect {
jtulach@101:     // BEGIN: misuse.prjconfig.correct
jtulach@154:     interface ProjectConfigurationProvider
jtulach@154:         <Configuration extends ProjectConfiguration> {
jtulach@210:         public Configuration[] getConfigurations();
jtulach@210:         public Configuration getActive();
jtulach@210:         public void setActive(Configuration c);
jtulach@101:     }
jtulach@101:     interface ProjectConfiguration {
jtulach@101:         public String getDisplayName();
jtulach@101:     }
jtulach@101:     // END: misuse.prjconfig.correct
jtulach@101:     
jtulach@101:     
jtulach@101: 
jtulach@101:     /* Following does not work:
jtulach@101:     static {
jtulach@101:         // BEGIN: misuse.prjconfig.correct.trivial.access
jtulach@154:         ProjectConfigurationProvider<?> provider = null; // obtain elsewhere;
jtulach@101:         provider.setActive(provider.getConfigurations()[0]);
jtulach@101:         // END: misuse.prjconfig.correct.trivial.access
jtulach@101:     }
jtulach@101:     */
jtulach@101: 
jtulach@210:     static 
jtulach@210:     // BEGIN: misuse.prjconfig.correct.access
jtulach@210:     { 
jtulach@154:         ProjectConfigurationProvider<?> provider = null; // obtain elsewhere;
jtulach@101:         resetToZero(provider);
jtulach@101:     }
jtulach@210:     // END: misuse.prjconfig.correct.access
jtulach@101: 
jtulach@101:     // BEGIN: misuse.prjconfig.correct.openmethod
jtulach@101:     private static <C extends ProjectConfiguration> void resetToZero(
jtulach@101:         ProjectConfigurationProvider<C> provider
jtulach@101:     ) {
jtulach@101:         provider.setActive(provider.getConfigurations()[0]);
jtulach@101:     }
jtulach@101:     // END: misuse.prjconfig.correct.openmethod
jtulach@101: 
jtulach@101:     // BEGIN: misuse.prjconfig.correct.openclass
jtulach@154:     static void workWithProjectConfigurationProvider(
jtulach@154:         ProjectConfigurationProvider<?> p
jtulach@154:     ) {
jtulach@101:         ResetToZero<?> rtz = ResetToZero.create(p);
jtulach@101:         rtz.obtainFirst();
jtulach@101:         // after a while
jtulach@101:         rtz.apply();
jtulach@101:     }
jtulach@101: 
jtulach@101:     static class ResetToZero<C extends ProjectConfiguration> {
jtulach@101:         C active;
jtulach@101:         final ProjectConfigurationProvider<C> provider;
jtulach@101: 
jtulach@101:         ResetToZero(ProjectConfigurationProvider<C> provider) {
jtulach@101:             this.provider = provider;
jtulach@101:         }
jtulach@101: 
jtulach@154:         static <C extends ProjectConfiguration> ResetToZero<C> create(
jtulach@154:             ProjectConfigurationProvider<C> p
jtulach@154:         ) {
jtulach@101:             return new ResetToZero<C>(p);
jtulach@101:         }
jtulach@101: 
jtulach@101:         public void obtainFirst() {
jtulach@101:             active = provider.getConfigurations()[0];
jtulach@101:         }
jtulach@101: 
jtulach@101:         public void apply() {
jtulach@101:             provider.setActive(active);
jtulach@101:         }
jtulach@101:     }
jtulach@101:     // END: misuse.prjconfig.correct.openclass
jtulach@101: 
jtulach@101: }