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org.tinygroup.context2object.impl.ClassNameObjectGenerator 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.*;
import java.util.*;
public class ClassNameObjectGenerator extends BaseClassNameObjectGenerator implements
ObjectGenerator {
private static final Logger LOGGER = LoggerFactory
.getLogger(ClassNameObjectGenerator.class);
private List> typeConverterList = new ArrayList>();
public Object getObject(String varName, String bean, String className,
ClassLoader loader, Context context) {
if (className == null || "".equals(className)) {
return getObject(varName, bean, null, context, null);
}
// 20130808注释LoaderManagerFactory
// return getObject(varName, bean, LoaderManagerFactory.getManager()
// .getClass(className), context, null);
return getObject(varName, bean, getClazz(className, loader), context,
null);
}
public Object getObjectArray(String varName, String className,
ClassLoader loader, Context context) {
// 20130808注释LoaderManagerFactory
// return buildArrayObjectWithObject(varName, LoaderManagerFactory
// .getManager().getClass(className), context, null);
return buildArrayObjectWithObject(varName, getClazz(className, loader),
context, null);
}
public Collection getObjectCollection(String collectionClassName,
ClassLoader loader) {
Class collectionClass = getClazz(collectionClassName, loader);
return (Collection) getObjectInstance(collectionClass);
}
public Collection getObjectCollection(String varName,
String collectionName, String className, ClassLoader loader,
Context context) {
// 20130808注释LoaderManagerFactory
// Class collectionClass =
// LoaderManagerFactory.getManager().getClass(
// collectionName);
// Class clazz =
// LoaderManagerFactory.getManager().getClass(className);
Class collectionClass = getClazz(collectionName, loader);
Class clazz = getClazz(className, loader);
Collection collection = (Collection) getObjectInstance(collectionClass);
buildCollection(varName, collection, clazz, context, null);
if (collection.isEmpty()) {
return null;
}
return collection;
}
private Object getObject(String varName, String bean, Class clazz,
Context context, String preName) {
if (bean != null) {
Object o = getInstanceBySpringBean(bean);
if (o != null) { // 如果不为空则继续进行
Object result = buildObject(varName, o, context, preName);
if (result == null) {// 如果解析返回null(表明没有从cotext中获取任何属性，则返回bean)
return o;
} else {
return result; // 否则返回解析结果
}
}
}
// 当通过beanid获取bean失败时，则按原有逻辑进行
if (clazz == null || isSimpleType(clazz)) {
return null;
} else if (clazz.isArray()) {
return buildArrayObjectWithArray(varName, clazz, context, preName);
} else {
Object o = getObjectInstance(clazz);
return buildObject(varName, o, context, preName);
}
}
private Object buildObject(String varName, Object object, Context context,
String preName) {
if (object == null) {
return null;
}
Class clazz = object.getClass();
String objName = varName;
ObjectAssembly assembly = getObjectAssembly(object.getClass());
if (assembly != null) {
assembly.assemble(varName, object, context);
return object;
}
// 20130424
// 属性是否全部为空，若全部为空，则返回空对象
boolean allPropertyNull = true;
if (isNull(objName)) {
objName = getObjName(object);
}
for (PropertyDescriptor descriptor : PropertyUtils
.getPropertyDescriptors(object.getClass())) {
if (descriptor.getPropertyType().equals(Class.class)) {
continue;
}
// 201402025修改此处代码，修改propertyName获取逻辑
// String propertyName = getPropertyName(clazz,
// descriptor.getName());
String propertyName = descriptor.getName();
Object propertyValue = getPerpertyValue(preName, objName,
propertyName, context);// user.name,user_name,name
if (propertyValue != null) { // 如果值取出来为空，则跳过不处理了
try {
if (descriptor.getPropertyType().equals( // 如果类型相同，或者值类型继承(实现)属性类型
propertyValue.getClass())
|| implmentInterface(propertyValue.getClass(),
descriptor.getPropertyType())) {
BeanUtils.setProperty(object, descriptor.getName(),
propertyValue);
allPropertyNull = false;
continue;
} else if (isSimpleType(descriptor.getPropertyType())) {// 若是简单类型
if (String.class == propertyValue.getClass()) { // 如果值是String类型
BeanUtils.setProperty(object, descriptor.getName(),
BasicTypeConverter.getValue(
propertyValue.toString(),
descriptor.getPropertyType().getName()));
allPropertyNull = false;
} else if (isSimpleType(propertyValue.getClass())) { // 若值也是简单类型则赋值，非简单类型，则不处理
BeanUtils.setProperty(object, descriptor.getName(),
propertyValue.toString());
allPropertyNull = false;
} else {
LOGGER.logMessage(LogLevel.WARN,
"参数{0}.{1}赋值失败,期望类型{3},实际类型{4}", objName,
propertyName, descriptor.getPropertyType(),
propertyValue.getClass());
}
continue;
}
// else {
// }
// 以上处理均未进入，则该类型为其他类型，需要进行递归
} catch (Exception e) {
LOGGER.errorMessage("为属性{0}赋值时出现异常", e,
descriptor.getName());
}
}
// 查找转换器，如果存在转换器，但是值为空，则跳出不处理
// 若转换器不存在，则继续进行处理
TypeConverter typeConverter = getTypeConverter(descriptor
.getPropertyType());
if (typeConverter != null) {
if (propertyValue != null) {
try {
BeanUtils.setProperty(object, descriptor.getName(),
typeConverter.getObject(propertyValue));
allPropertyNull = false;
} catch (Exception e) {
LOGGER.errorMessage("为属性{0}赋值时出现异常", e,
descriptor.getName());
}
}
continue;
}
// 对象值为空，且转换器不存在
if (!isSimpleType(descriptor.getPropertyType())) {
// 如果是共它类型则递归调用
try {
String newPreName = getReallyPropertyName(preName, objName,
propertyName);
// ===============begin======================
// 20151208修改逻辑为getDeclaredFieldWithParent获取type再获取属性，解决无法获取父类的属性的问题
// Class type = null;
// try{
Field field = getDeclaredFieldWithParent(clazz,
propertyName);
// type =
// clazz.getDeclaredField(descriptor.getName()).getType();
// type = descriptor.getPropertyType();
// }catch (NoSuchFieldException e)
if (field == null) {
LOGGER.logMessage(LogLevel.WARN, "{}不存在字段{}",
clazz.getName(), propertyName);
continue;
}
Class type = field.getType();
// ===============end======================
if (type.isArray()) {// 如果是数组
Object value = getObject(newPreName, null,
descriptor.getPropertyType(), context,
null);
if (value != null) {
BeanUtils.setProperty(object, descriptor.getName(),
value);
allPropertyNull = false;
}
} else if (implmentInterface(descriptor.getPropertyType(),
Collection.class)) {// 如果是集合
// ===============begin======================
// 20151208修改逻辑为getDeclaredFieldWithParent获取type再获取属性，解决无法获取父类的属性的问题
Field propertyType = getDeclaredFieldWithParent(clazz,
propertyName);
if (propertyType == null) {
LOGGER.logMessage(LogLevel.WARN, "{}不存在字段{}",
clazz.getName(), propertyName);
continue;
}
// ParameterizedType pt = (ParameterizedType) clazz
// .getDeclaredField(descriptor.getName())
// .getGenericType();
ParameterizedType pt = (ParameterizedType) propertyType
.getGenericType();
// ===============end======================
Type[] actualTypeArguments = pt
.getActualTypeArguments();
Collection collection = (Collection) getObjectInstance(type);
buildCollection(newPreName, collection,
(Class) actualTypeArguments[0], context,
null);
if (!collection.isEmpty()) {
BeanUtils.setProperty(object, descriptor.getName(),
collection);
allPropertyNull = false;
}
} else {// 如果是其他类型
Object value = getObject(newPreName, null,
descriptor.getPropertyType(), context,
null);
if (value != null) {
BeanUtils.setProperty(object, descriptor.getName(),
value);
allPropertyNull = false;
}
}
} catch (Exception e) {
LOGGER.errorMessage("为属性{0}赋值时出现异常", e,
descriptor.getName());
}
}
}
if (allPropertyNull) {
return null;
}
return object;
}
private void buildCollection(String varName, Collection collection,
Class clazz, Context context, String preName) {
if (clazz == null) {
return;
} else if (isSimpleType(clazz)) {
buildCollectionSimple(varName, collection, clazz, context, preName);
// } else if (clazz.isEnum()) {
// buildCollectionEnum(varName, collection, clazz, context,
// preName);
} else {
buildCollectionObject(varName, collection, clazz, context, preName);
}
}
private void buildCollectionSimple(String varName,
Collection collection, Class clazz, Context context,
String preName) {
if (clazz == null) {
return;
}
String reallyVarName = varName;
if (isNull(reallyVarName)) {
reallyVarName = preName;
}
if (isNull(reallyVarName)) {
throw new RuntimeException("简单类型数组或集合,变量名不可为空");
}
Object propertyValue = getPerpertyValue(reallyVarName, context);
if (propertyValue != null) {
if (propertyValue.getClass().isArray()) {
// 如果是数组
Object[] objArray = (Object[]) propertyValue;
if (objArray.getClass().getComponentType() == String.class) {
for (Object o : objArray) {
collection.add(BasicTypeConverter.getValue((String) o, clazz.getName()));
}
} else {
for (Object o : objArray) {
collection.add(o);
}
}
} else {
if (propertyValue.getClass() == String.class) {
collection.add(BasicTypeConverter.getValue((String) propertyValue, clazz.getName()));
} else {
collection.add(propertyValue);
}
}
}
// return collection;
}
// 处理非复杂对象，如enmu等类型
// 此种方式判断依据是preName.varName存在一个数组值
// 因为如果是复杂对象，那么必然不存在preName.varName数组，而是存在preName.varName.propertyName数组
private boolean checkIfNotComplexObjectCollection(String varName,
Collection collection, Class clazz, Context context,
String preName) {
String reallyName = preName;
if (StringUtil.isBlank(varName) && StringUtil.isBlank(preName)) {
return false;
} else if (StringUtil.isBlank(preName)) {
reallyName = varName;
} else if (StringUtil.isBlank(varName)) {
reallyName = preName;
} else {
reallyName = getReallyPropertyName(null, preName, varName);
}
Object value = getPerpertyValue(reallyName, context);
if (value == null) {
return false;
}
if (!value.getClass().isArray()) {
return false;
}
Object[] arrays = (Object[]) value;
for (int i = 0; i < arrays.length; i++) {
Object propertyValue = arrays[i];
if (clazz.equals( // 如果类型相同，或者值类型继承(实现)属性类型
propertyValue.getClass())
|| implmentInterface(propertyValue.getClass(), clazz)) {
collection.add(propertyValue);
continue;
}
TypeConverter typeConverter = getTypeConverter(clazz);
if (typeConverter != null) {
if (propertyValue != null) {
collection.add(typeConverter.getObject(propertyValue));
}
} else {
throw new RuntimeException("未找到对象" + clazz + "的转换器,源数据类型:"
+ propertyValue.getClass());
// throw new
// RuntimeException("无法处理对象"+objecList.get(index)+"的属性"+descriptor.getName()+"期望类型"+descriptor
// .getPropertyType()+"实际值:"+propertyValue);
}
}
return true;
}
/**
* 处理非基本类型的集合
*
* @param varName 变量名
* @param collection 集合对象
* @param clazz 类型class
* @param context 上下文
* @param preName 前置变量名
*/
private void buildCollectionObject(String varName,
Collection collection, Class clazz, Context context,
String preName) {
if (clazz == null) {
return;
}
// 如果是非复杂对象,比如Enmu\BigDecimal等单值对象
if (checkIfNotComplexObjectCollection(varName, collection, clazz,
context, preName)) {
return;
}
// 处理复杂对象
dealComplexObject(varName, collection, clazz, context, preName);
}
private void dealComplexObject(String varName,
Collection collection, Class clazz, Context context,
String preName) {
Object object = getObjectInstance(clazz);
String objName = varName;
if (isNull(objName)) {
// 20130806修改变量名为首字母小写
objName = getObjName(object);
}
Map valueMap = new HashMap();
Class reallyType = object.getClass();
int size = -1;
// 先计算出collection的size
for (PropertyDescriptor descriptor : PropertyUtils
.getPropertyDescriptors(reallyType)) {
if (descriptor.getPropertyType().equals(Class.class)) {
continue;
}
//20160412注释此处代码，参见下面的注释
// if (size != -1) {
// break;
// }
// 201402025修改此处代码，修改propertyName获取逻辑
// String propertyName = getPropertyName(reallyType,
// descriptor.getName());
String propertyName = descriptor.getName();
Object propertyValue = getPerpertyValue(preName, objName,
propertyName, context);
if (propertyValue != null) {
valueMap.put(propertyName, propertyValue);
if (propertyValue.getClass().isArray()) {
// 如果是数组
//20160412修改此处代码
//如果 数组长度小于之前算到的长度，而且之前的长度不是-1，则设置小长度为新长度
//如果数组长度大于之前的长度，切之前长度为-1，则设置大长度为新长度
//用于应对，一个对象数组List，User.name={长度为3},user.age={长度为4}，则认为user长度为3
Object[] objArray = (Object[]) propertyValue;
if ((objArray.length < size && size != -1) || (objArray.length > size && size == -1)) {
size = objArray.length;
}
} else if (size == -1) {
size = 1;
}
}
}
// 20130424
// 说明集合完全没有相关的值
// 返回空集合
if (size == -1) {
return;
}
// 初始化objecList的数据
List objecList = new ArrayList();
for (int i = 0; i < size; i++) {
Object o = getObjectInstance(clazz);
objecList.add(o);
}
for (PropertyDescriptor descriptor : PropertyUtils
.getPropertyDescriptors(reallyType)) {
if (descriptor.getPropertyType().equals(Class.class)) {
continue;
}
// 201402025修改此处代码，修改propertyName获取逻辑
// String propertyName = getPropertyName(reallyType,
// descriptor.getName());
String propertyName = descriptor.getName();
Object propertyValue = getPerpertyValue(preName, objName,
propertyName, context);
if (propertyValue == null) {
continue;
}
try {
if (size == 1) {
Object realvalue = propertyValue;
if (propertyValue.getClass().isArray()) {
realvalue = ((Object[]) propertyValue)[0];
}
setSimpleValue(objecList, 0, descriptor, realvalue);
} else {
Object[] objArray = (Object[]) propertyValue;
for (int i = 0; i < size; i++) {
// BeanUtils.setProperty(objecList.get(i),
// descriptor.getName(), objArray[i]);
setSimpleValue(objecList, i, descriptor, objArray[i]);
}
}
continue;
} catch (Exception e) {
LOGGER.errorMessage("为属性{0}赋值时出现异常", e, descriptor.getName());
}
}
// objecList的数据放入collection
for (Object o : objecList) {
collection.add(o);
}
// return collection;
}
private void setSimpleValue(List objecList, int index,
PropertyDescriptor descriptor, Object propertyValue)
throws IllegalAccessException, InvocationTargetException {
if (descriptor.getPropertyType().equals( // 如果类型相同，或者值类型继承(实现)属性类型
propertyValue.getClass())
|| implmentInterface(propertyValue.getClass(),
descriptor.getPropertyType())) {
BeanUtils.setProperty(objecList.get(index), descriptor.getName(),
propertyValue);
return;
} else if (isSimpleType(descriptor.getPropertyType())) {// 若是简单类型
if (isSimpleType(propertyValue.getClass())) { // 若值也是简单类型则赋值，非简单类型，则不处理
BeanUtils.setProperty(objecList.get(index),
descriptor.getName(), propertyValue.toString());
} else {
LOGGER.logMessage(LogLevel.WARN,
"对象{0}属性{1}赋值失败,期望类型{3},实际类型{4}", objecList.get(index),
descriptor.getName(), descriptor.getPropertyType(),
propertyValue.getClass());
}
return;
}
TypeConverter typeConverter = getTypeConverter(descriptor
.getPropertyType());
if (typeConverter != null) {
if (propertyValue != null) {
try {
BeanUtils.setProperty(objecList.get(index),
descriptor.getName(),
typeConverter.getObject(propertyValue));
} catch (Exception e) {
LOGGER.errorMessage("为属性{0}赋值时出现异常", e,
descriptor.getName());
}
}
} else {
throw new RuntimeException("无法处理对象" + objecList.get(index) + "的属性"
+ descriptor.getName() + "期望类型"
+ descriptor.getPropertyType() + "实际值:" + propertyValue);
}
// if(descriptor.getPropertyType().isEnum()){
// BeanUtils.setProperty(objecList.get(index),
// descriptor.getName(), getEnmuObject(descriptor.getPropertyType(),
// propertyValue));
// }else{
// BeanUtils.setProperty(objecList.get(index),
// descriptor.getName(), propertyValue);
// }
}
private Object buildArrayObjectWithArray(String varName,
Class arrayClass, Context context, String preName) {
return buildArrayObjectWithObject(varName,
arrayClass.getComponentType(), context, preName);
}
private Object buildArrayObjectWithObject(String varName,
Class objectClass, Context context, String preName) {
if (objectClass == null) {
return null;
}
Collection collection = new ArrayList();
buildCollection(varName, collection, objectClass, context, preName);
if (collection.isEmpty()) {
return null;
} else {
Object array = Array.newInstance(objectClass, collection.size());
Iterator iterator = collection.iterator();
Object[] objectsArray = (Object[]) array;
for (int i = 0; i < collection.size(); i++) {
objectsArray[i] = iterator.next();
}
return array;
}
}
private TypeConverter getTypeConverter(Class destType) {
for (TypeConverter typeConverter : typeConverterList) {
if (typeConverter.getDestinationType().equals(destType)) {
return typeConverter;
}
}
return null;
}
public void addTypeConverter(TypeConverter typeConverter) {
typeConverterList.add(typeConverter);
}
public void removeTypeConverter(TypeConverter typeConverter) {
typeConverterList.remove(typeConverter);
}
}
