org.osgl.inject.PostConstructProcessorInvoker Maven / Gradle / Ivy

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A JSR330 style dependency injection solution

There is a newer version: 1.13.2

package org.osgl.inject;

import org.osgl.$;
import org.osgl.util.C;

import javax.inject.Provider;
import java.lang.annotation.Annotation;
import java.util.List;
import java.util.Set;

class PostConstructProcessorInvoker implements Provider {

    private Provider realProvider;
    private List<$.T2>> processors;

    private PostConstructProcessorInvoker(
            Provider realProvider,
            List<$.T2>> processors
    ) {
        this.realProvider = realProvider;
        this.processors = processors;
    }

    @Override
    public T get() {
        T t = realProvider.get();
        for ($.T2> pair : processors) {
            pair._2.process(t, pair._1);
        }
        return t;
    }

    static  Provider decorate(BeanSpec spec, Provider realProvider, Genie genie) {
        if (realProvider instanceof PostConstructorInvoker) {
            return realProvider;
        }
        Set postProcessors = spec.postProcessors();
        if (postProcessors.isEmpty()) {
            return realProvider;
        }
        C.List<$.T2>> processors = C.newSizedList(postProcessors.size());
        for (Annotation annotation : postProcessors) {
            PostConstructProcessor pcp = genie.postConstructProcessor(annotation);
            processors.add($.T2(annotation, pcp));
        }
        return new PostConstructProcessorInvoker(realProvider, processors);
    }
}