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/**
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* Copyright (C) 2014 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.model;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
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import org.springframework.beans.factory.config.BeanDefinition;
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import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
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import org.springframework.util.ClassUtils;
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/**
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 * @author a.kohlbecker
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 * @since Jul 31, 2014
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 *
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 */
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public class CdmTypeScanner<T> extends ClassPathScanningCandidateComponentProvider {
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    static  final String defaultBasePackage = "eu/etaxonomy/cdm/";
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    boolean includeAbstract;
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    boolean includeInterfaces;
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    public CdmTypeScanner(boolean considerAbstract, boolean considerInterfaces) {
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        super(false);
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        this.includeAbstract = considerAbstract;
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        this.includeInterfaces = considerInterfaces;
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    }
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    public final Collection<Class<? extends T>> scanTypesIn(String basePackage) {
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        String _basePackage = basePackage == null ? defaultBasePackage : basePackage;
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        List<Class<? extends T>> classes = new ArrayList<Class<? extends T>>();
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        for (BeanDefinition candidate : findCandidateComponents(_basePackage)) {
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                @SuppressWarnings("unchecked")
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                Class<? extends T> cls = (Class<? extends T>)ClassUtils.resolveClassName(candidate.getBeanClassName(),
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                        ClassUtils.getDefaultClassLoader());
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                classes.add(cls);
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        }
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        return classes;
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    }
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    /**
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     * Determine whether the given bean definition qualifies as candidate.
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     * <p>The special implementation checks whether the class is concrete
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     * or abstract or an interface. The latter two conditions depend on
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     * the state of the two boolean fields includeAnstract, includeInterface.
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     *
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     * @param beanDefinition the bean definition to check
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     * @return whether the bean definition qualifies as a candidate component
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     */
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    @Override
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    protected boolean isCandidateComponent(AnnotatedBeanDefinition beanDefinition) {
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        return (beanDefinition.getMetadata().isIndependent()
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                && (beanDefinition.getMetadata().isConcrete()
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                  || (includeAbstract && beanDefinition.getMetadata().isAbstract())
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                  || (includeInterfaces && beanDefinition.getMetadata().isInterface())
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                 )
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                );
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    }
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    }