com.github.bootfastconfig.springtool.ReflectUtil Maven / Gradle / Ivy

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package com.github.bootfastconfig.springtool;

import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeansException;
import org.springframework.cglib.core.CodeGenerationException;
import org.springframework.core.convert.Property;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.lang.Nullable;
import org.springframework.util.ReflectionUtils;

import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

public class ReflectUtil extends ReflectionUtils {

    private ReflectUtil() {
    }

    public static PropertyDescriptor[] getBeanGetters(Class type) {
        return getPropertiesHelper(type, true, false);
    }

    public static PropertyDescriptor[] getBeanSetters(Class type) {
        return getPropertiesHelper(type, false, true);
    }

    public static PropertyDescriptor[] getPropertiesHelper(Class type, boolean read, boolean write) {
        try {
            PropertyDescriptor[] all = BeanUtils.getPropertyDescriptors(type);
            if (read && write) {
                return all;
            } else {
                List properties = new ArrayList(all.length);
                PropertyDescriptor[] var5 = all;
                int var6 = all.length;

                for (int var7 = 0; var7 < var6; ++var7) {
                    PropertyDescriptor pd = var5[var7];
                    if (read && pd.getReadMethod() != null) {
                        properties.add(pd);
                    } else if (write && pd.getWriteMethod() != null) {
                        properties.add(pd);
                    }
                }

                return (PropertyDescriptor[]) properties.toArray(new PropertyDescriptor[0]);
            }
        } catch (BeansException var9) {
            throw new CodeGenerationException(var9);
        }
    }

    @Nullable
    public static Property getProperty(Class propertyType, String propertyName) {
        PropertyDescriptor propertyDescriptor = BeanUtils.getPropertyDescriptor(propertyType, propertyName);
        return propertyDescriptor == null ? null : getProperty(propertyType, propertyDescriptor, propertyName);
    }

    public static Property getProperty(Class propertyType, PropertyDescriptor propertyDescriptor, String propertyName) {
        Method readMethod = propertyDescriptor.getReadMethod();
        Method writeMethod = propertyDescriptor.getWriteMethod();
        return new Property(propertyType, readMethod, writeMethod, propertyName);
    }

    @Nullable
    public static TypeDescriptor getTypeDescriptor(Class propertyType, String propertyName) {
        Property property = getProperty(propertyType, propertyName);
        return property == null ? null : new TypeDescriptor(property);
    }

    public static TypeDescriptor getTypeDescriptor(Class propertyType, PropertyDescriptor propertyDescriptor, String propertyName) {
        Method readMethod = propertyDescriptor.getReadMethod();
        Method writeMethod = propertyDescriptor.getWriteMethod();
        Property property = new Property(propertyType, readMethod, writeMethod, propertyName);
        return new TypeDescriptor(property);
    }

    @Nullable
    public static Field getField(Class clazz, String fieldName) {
        while (clazz != Object.class) {
            try {
                return clazz.getDeclaredField(fieldName);
            } catch (NoSuchFieldException var3) {
                clazz = clazz.getSuperclass();
            }
        }

        return null;
    }

    @Nullable
    public static  T getAnnotation(Class clazz, String fieldName, Class annotationClass) {
        Field field = getField(clazz, fieldName);
        return field == null ? null : field.getAnnotation(annotationClass);
    }

}