EDIT

// $Id$

/**

* Copyright (C) 2014 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.model;

import java.util.ArrayList;

import java.util.Collection;

import java.util.List;

import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;

import org.springframework.beans.factory.config.BeanDefinition;

import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;

import org.springframework.util.ClassUtils;

/**

 * @author a.kohlbecker

 * @date Jul 31, 2014

 *

 */

public class CdmTypeScanner<T> extends ClassPathScanningCandidateComponentProvider {

    static  final String defaultBasePackage = "eu/etaxonomy/cdm/";

    boolean includeAbstract;

    boolean includeInterfaces;

    public CdmTypeScanner(boolean considerAbstract, boolean considerInterfaces) {

        super(false);

        this.includeAbstract = considerAbstract;

        this.includeInterfaces = considerInterfaces;

    }

    public final Collection<Class<? extends T>> scanTypesIn(String basePackage) {

        String _basePackage = basePackage == null ? defaultBasePackage : basePackage;

        List<Class<? extends T>> classes = new ArrayList<Class<? extends T>>();

        for (BeanDefinition candidate : findCandidateComponents(_basePackage)) {

                Class cls = ClassUtils.resolveClassName(candidate.getBeanClassName(),

                        ClassUtils.getDefaultClassLoader());

                classes.add(cls);

        }

        return classes;

    }

    /**

     * Determine whether the given bean definition qualifies as candidate.

     * <p>The special implementation checks whether the class is concrete

     * or abstract or an interface. The latter two conditions depend on

     * the state of the two boolean fields includeAnstract, includeInterface.

     *

     * @param beanDefinition the bean definition to check

     * @return whether the bean definition qualifies as a candidate component

     */

    @Override

    protected boolean isCandidateComponent(AnnotatedBeanDefinition beanDefinition) {

        return (beanDefinition.getMetadata().isIndependent()

                && (beanDefinition.getMetadata().isConcrete()

                  || (includeAbstract && beanDefinition.getMetadata().isAbstract())

                  || (includeInterfaces && beanDefinition.getMetadata().isInterface())

                 )

                );

    }

    }