org.tinygroup.springmvc.coc.ConventionBeanDefinitionRegistryPostProcessor.java Source code

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Here is the source code for org.tinygroup.springmvc.coc.ConventionBeanDefinitionRegistryPostProcessor.java

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/**
 *  Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.springmvc.coc;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.annotation.Autowire;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionDefaults;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
import org.springframework.beans.factory.support.DefaultBeanNameGenerator;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.ClassPathBeanDefinitionScanner;
import org.springframework.context.support.ApplicationObjectSupport;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.TypeFilter;
import org.springframework.web.bind.annotation.RequestMapping;
import org.tinygroup.commons.tools.CollectionUtil;
import org.tinygroup.springmvc.support.AnnotationScopeMetadataResolver;
import org.tinygroup.springutil.PathMatchingInJarResourcePatternResolver;

/**
 * ??
 * 
 * @author renhui
 * 
 */
public class ConventionBeanDefinitionRegistryPostProcessor extends ApplicationObjectSupport
        implements BeanDefinitionRegistryPostProcessor, InitializingBean {
    private static final Log logger = LogFactory.getLog(ConventionBeanDefinitionRegistryPostProcessor.class);

    private List<ConventionComponentIdentifier> conventionComponentIdentifierComposite;

    public void setConventionComponentIdentifierComposite(
            List<ConventionComponentIdentifier> conventionComponentIdentifierComposite) {
        this.conventionComponentIdentifierComposite = conventionComponentIdentifierComposite;
    }

    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
    }

    public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
        if (conventionComponentIdentifierComposite == null
                || CollectionUtil.isEmpty(conventionComponentIdentifierComposite)) {
            return;
        }
        List<ConventionComponentIdentifier> identifiers = conventionComponentIdentifierComposite;
        if (CollectionUtil.isEmpty(identifiers)) {
            return;
        }

        List<String> patterns = new ArrayList<String>();
        for (ConventionComponentIdentifier identifier : identifiers) {
            patterns.addAll(identifier.getPackagePatterns());
        }
        if (CollectionUtil.isEmpty(patterns)) {
            return;
        }
        // ???beanDefinition
        String[] patternArray = new String[patterns.size()];
        long start = System.currentTimeMillis();
        int count = this.createScanner(registry).scan(patterns.toArray(patternArray));
        if (logger.isInfoEnabled()) {
            logger.info("detect " + count + "s conventional components form web bundle  duration: "
                    + (System.currentTimeMillis() - start) + " ms");
        }
    }

    protected ClassPathBeanDefinitionScanner createScanner(BeanDefinitionRegistry registry) {
        ClassPathBeanDefinitionScanner scaner = new ClassPathBeanDefinitionScanner(registry, false);
        BeanDefinitionDefaults defaults = new BeanDefinitionDefaults();
        defaults.setAutowireMode(Autowire.BY_NAME.value());
        scaner.setBeanDefinitionDefaults(defaults);
        scaner.setScopeMetadataResolver(new AnnotationScopeMetadataResolver());
        scaner.setResourceLoader(new PathMatchingInJarResourcePatternResolver());
        scaner.setBeanNameGenerator(new DefaultBeanNameGenerator());
        addTypeFilters(scaner);
        return scaner;
    }

    private void addTypeFilters(ClassPathBeanDefinitionScanner scaner) {
        if (conventionComponentIdentifierComposite == null
                || CollectionUtil.isEmpty(conventionComponentIdentifierComposite)) {
            return;
        }
        List<ConventionComponentIdentifier> identifiers = conventionComponentIdentifierComposite;
        if (CollectionUtil.isEmpty(identifiers)) {
            return;
        }
        for (final ConventionComponentIdentifier identifier : identifiers) {
            scaner.addIncludeFilter(new TypeFilter() {

                public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory)
                        throws IOException {
                    boolean match = identifier.isComponent(metadataReader.getClassMetadata().getClassName());
                    if (match) {
                        if (metadataReader.getAnnotationMetadata().hasAnnotation(RequestMapping.class.getName())
                                || metadataReader.getAnnotationMetadata()
                                        .hasAnnotatedMethods(RequestMapping.class.getName())) {
                            return false;
                        }
                    }
                    return match;
                }

            });

        }

    }

    public void afterPropertiesSet() throws Exception {
        if (CollectionUtil.isEmpty(conventionComponentIdentifierComposite)) {
            Map<String, ConventionComponentIdentifier> map = BeanFactoryUtils.beansOfTypeIncludingAncestors(
                    this.getListableBeanFactory(), ConventionComponentIdentifier.class);
            conventionComponentIdentifierComposite = new ArrayList<ConventionComponentIdentifier>();
            conventionComponentIdentifierComposite.addAll(map.values());
        }

    }

    private ListableBeanFactory getListableBeanFactory() {
        if (getApplicationContext() instanceof ConfigurableApplicationContext) {
            return ((ConfigurableApplicationContext) getApplicationContext()).getBeanFactory();
        }
        return getApplicationContext();
    }

}