com.github.datalking.context.annotation.AnnotationConfigApplicationContext Maven / Gradle / Ivy

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package com.github.datalking.context.annotation;

import com.github.datalking.beans.factory.support.DefaultListableBeanFactory;
import com.github.datalking.context.support.AbstractApplicationContext;
import com.github.datalking.util.Assert;

/**
 * 处理注解的ApplicationContext
 *
 * @author yaoo on 4/9/18
 */
public class AnnotationConfigApplicationContext extends AbstractApplicationContext implements AnnotationConfigRegistry {

    private final AnnotatedBeanDefinitionReader reader;

    private final ClassPathBeanDefinitionScanner scanner;

    public AnnotationConfigApplicationContext() {
        super();
        this.reader = new AnnotatedBeanDefinitionReader(beanFactory);
        this.scanner = new ClassPathBeanDefinitionScanner(beanFactory);
    }

    public AnnotationConfigApplicationContext(DefaultListableBeanFactory beanFactory) {
        super(beanFactory);
        this.reader = new AnnotatedBeanDefinitionReader(beanFactory);
        this.scanner = new ClassPathBeanDefinitionScanner(beanFactory);
    }


    public AnnotationConfigApplicationContext(Class... annotatedClasses) {
        // 初始化读取器和扫描器
        this();
        // 注册当前class的BeanDefinition
        register(annotatedClasses);
        // 各种后置处理器、立即实例化
        refresh();

    }

    public AnnotationConfigApplicationContext(String... basePackages) {
        this();
        scan(basePackages);
        refresh();
    }

    /**
     * 扫描指定包下的注解类
     *
     * @param basePackages 指定包
     */
    @Override
    public void scan(String... basePackages) {
        Assert.notNull(basePackages, "At least one base package must be specified");
        this.scanner.scan(basePackages);
    }

    /**
     * 直接注册class
     *
     * @param annotatedClasses 要注册的class对象
     */
    @Override
    public void register(Class... annotatedClasses) {
        Assert.notNull(annotatedClasses, "At least one annotated class must be specified");
        this.reader.register(annotatedClasses);
    }

    @Override
    protected void loadBeanDefinitions(DefaultListableBeanFactory beanFactory) {
    }

}