org.jarbframework.utils.ClassScanner Maven / Gradle / Ivy

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Provides common utilities

There is a newer version: 2.4.3

/*
 * (C) 2013 42 bv (www.42.nl). All rights reserved.
 */
package org.jarbframework.utils;

import java.lang.annotation.Annotation;
import java.util.HashSet;
import java.util.Set;

import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
import org.springframework.core.type.filter.AnnotationTypeFilter;
import org.springframework.core.type.filter.AssignableTypeFilter;
import org.springframework.core.type.filter.TypeFilter;

/**
 * Used for scanning classes.
 *
 * @author Jeroen van Schagen
 * @since Feb 27, 2014
 */
public class ClassScanner {
    
    public static Set> getAllOfType(String basePackage, Class targetType) {
        return getAll(basePackage, new AssignableTypeFilter(targetType));
    }
    
    public static Set> getAllWithAnnotation(String basePackage, Class annotationClass) {
        return getAll(basePackage, new AnnotationTypeFilter(annotationClass));
    }
    
    private static Set> getAll(String basePackage, TypeFilter filter) {
        ClassPathScanningCandidateComponentProvider componentProvider = new ClassPathScanningCandidateComponentProvider(false);
        componentProvider.addIncludeFilter(filter);
        Set beanDefinitions = componentProvider.findCandidateComponents(basePackage);
        Set> beanClasses = new HashSet>(beanDefinitions.size());
        for (BeanDefinition beanDefinition : beanDefinitions) {
            Class beanClass = Classes.forName(beanDefinition.getBeanClassName());
            beanClasses.add(beanClass);
        }
        return beanClasses;
    }

}