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• ClassNameObjectGeneratorWithException.java

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org.tinygroup.context2object.impl.ClassNameObjectGeneratorWithException Maven / Gradle / Ivy

/**
 * Copyright (c) 2012-2016, www.tinygroup.org ([email protected]).
 *
 *  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.context2object.impl;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.beanutils.PropertyUtils;
import org.tinygroup.commons.tools.StringUtil;
import org.tinygroup.context.Context;
import org.tinygroup.context2object.ObjectAssembly;
import org.tinygroup.context2object.ObjectGenerator;
import org.tinygroup.context2object.TypeConverter;
import org.tinygroup.context2object.config.BasicTypeConverter;
import org.tinygroup.logger.LogLevel;
import org.tinygroup.logger.Logger;
import org.tinygroup.logger.LoggerFactory;

import java.beans.PropertyDescriptor;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.*;

public class ClassNameObjectGeneratorWithException extends
        BaseClassNameObjectGenerator implements ObjectGenerator {
    private static final Logger LOGGER = LoggerFactory
            .getLogger(ClassNameObjectGeneratorWithException.class);
    private Map>> typeConverterMap = new HashMap>>();

    public Object getObject(String varName, String bean, String className,
                            ClassLoader loader, Context context) {
        if (StringUtil.isBlank(className) && StringUtil.isBlank(bean)) {
            throw new RuntimeException("传入的className和beanID不可同时为空");
        }
        Object o = null;
        Class clazz = null;
        if (bean != null) { // 以bean为优先
            o = getInstanceBySpringBean(bean);
            clazz = o.getClass();
        } else {
            // 如果传入的className不为空
            clazz = getClazz(className, loader);
        }
        Object parseResult = getObject(null, varName, clazz, loader, context);
        if (parseResult == null) {
            return o;
        }
        return parseResult;
    }

    private Object checkIsSameType(String preName, String varName,
                                   String propertyName, Class clazz, Context context) {
        Object value = getPerpertyValue(preName, varName, propertyName, context);
        if (value != null && value.getClass() == clazz) {
            return value;
        }
        return null;
    }

    private Object getObject(String preName, String varName, Class clazz,
                             ClassLoader loader, Context context) {
        Object value = checkIsSameType(null, preName, varName, clazz, context);
        if (value != null) {
            return value;
        }
        List> typeConverterList = getTypeConverterList(clazz);
        if (typeConverterList != null) {// 如果存在typeConverter
            if (value == null) {
                LOGGER.logMessage(LogLevel.WARN, "类型:{0}在上下文中的变量名:{1}值为null",
                        clazz, varName);
                return typeConverterList.get(0).getObject(null);
            }
            for (TypeConverter typeConverter : typeConverterList) {
                if (value.getClass() == typeConverter.getSourceType()) {
                    return typeConverter.getObject(value);
                }
            }
            // throw new
            // RuntimeException("未从已有的类型转换器中找到合适的转换器，目标类型:"+className+",值:"+value+",类型:"+value.getClass());
        }
        // 没有找到合适的转换器类型，继续执行
        // 处理基本类型
        if (isSimpleType(clazz)) {
            return getSimpleTypeValue(
                    getReallyPropertyName(null, preName, varName), clazz,
                    context);
        } else {
            // 处理对象
            Object o = getObjectInstance(clazz);
            Object result = buildObject(preName, varName, o, loader, context);
            return result;
        }
    }

    /**
     * 到了这一步 object对应的类型，既不是数组、集合、基本类型，同时也不存在转换器 只能进行解析拼装
     */
    private Object buildObject(String preName, String varName, Object object,
                               ClassLoader loader, Context context) {
        String objName = varName;
        Class clazz = object.getClass();
        ObjectAssembly assembly = getObjectAssembly(object.getClass());
        if (assembly != null) {
            assembly.assemble(varName, object, context);
            return object;
        }
        boolean allPropertyNull = true;
        if (isNull(objName)) {
            objName = getObjName(object);
        }
        for (PropertyDescriptor descriptor : PropertyUtils
                .getPropertyDescriptors(object.getClass())) {
            Class propertyType = descriptor.getPropertyType();
            String propertyName = descriptor.getName();
            if (propertyType.equals(Class.class)) {
                continue;
            }
            Object propertyValue = checkIsSameType(preName, varName,
                    propertyName, propertyType, context);
            if (propertyValue != null) {
                try {
                    BeanUtils.setProperty(object, descriptor.getName(),
                            propertyValue);
                    allPropertyNull = false;
                    continue;
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            }

            if (implmentInterface(propertyType, Collection.class)) {
                // 如果是集合类型
                Field field = getDeclaredFieldWithParent(clazz, propertyName);
                if (field == null) {
                    LOGGER.logMessage(LogLevel.WARN, "{}不存在字段{}",
                            clazz.getName(), propertyName);
                    continue;
                }
                String newPreName = getReallyPropertyName(preName, objName,
                        propertyName);
                Class type = field.getType();
                ParameterizedType pt = (ParameterizedType) field
                        .getGenericType();
                Type[] actualTypeArguments = pt.getActualTypeArguments();
                Collection