com.bstek.urule.ClassUtils Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2017 Bstek
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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 com.bstek.urule;
import java.beans.BeanInfo;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.io.IOUtils;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
import com.bstek.urule.model.Label;
import com.bstek.urule.model.library.Datatype;
import com.bstek.urule.model.library.variable.Act;
import com.bstek.urule.model.library.variable.Variable;
/**
* @author Jacky.gao
* @since 2016年6月2日
*/
public class ClassUtils {
public static void classToXml(Class cls,File file){
if(!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
OutputStream out=null;
try{
out=new FileOutputStream(file);
List variables=classToVariables(cls);
StringBuffer sb=new StringBuffer();
sb.append("");
for(Variable var:variables){
sb.append("");
sb.append(" ");
}
sb.append(" ");
Document doc=DocumentHelper.parseText(sb.toString());
OutputFormat format=OutputFormat.createPrettyPrint();
format.setEncoding("utf-8");
XMLWriter writer=new XMLWriter(out,format);
writer.write(doc);
writer.close();
out.close();
}catch(Exception ex){
throw new RuntimeException(ex);
}finally{
IOUtils.closeQuietly(out);
}
}
public static List classToVariables(Class cls){
try {
List result = paserClass("",cls, new ArrayList>());
return result;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private static List paserClass(String path,Class cls, Collection> parsed) throws Exception{
List variables=new ArrayList();
BeanInfo beanInfo=Introspector.getBeanInfo(cls,Object.class);
PropertyDescriptor[] pds= beanInfo.getPropertyDescriptors();
if(pds!=null && !parsed.contains(cls)){
parsed.add(cls);
for(PropertyDescriptor pd:pds){
Variable variable=new Variable();
Class type=pd.getPropertyType();
Datatype dataType=getDateType(type);
String propertyName=pd.getName();
String label=getPropertyAnnotationLabel(cls, propertyName);
String name=path+pd.getName();
variable.setName(name);
variable.setLabel(label==null?name:label);
variable.setType(dataType);
variable.setAct(Act.InOut);
if(Datatype.Object.equals(dataType)){
variables.addAll(paserClass(path+pd.getName()+".",type, parsed));
}else{
variables.add(variable);
}
}
}
return variables;
}
private static String getPropertyAnnotationLabel(Class cls,String fieldName) throws Exception{
Field field = null;
while(field==null){
try{
field=cls.getDeclaredField(fieldName);
}catch(NoSuchFieldException ex){
if(cls==Object.class){
throw ex;
}
cls=cls.getSuperclass();
}
}
Label pd=field.getAnnotation(Label.class);
if(pd!=null){
return pd.value();
}
return null;
}
private static Datatype getDateType(Class type){
if(String.class.isAssignableFrom(type)){
return Datatype.String;
}else if(Boolean.class.isAssignableFrom(type)
||boolean.class.isAssignableFrom(type)){
return Datatype.Boolean;
}else if(Integer.class.isAssignableFrom(type)
||int.class.isAssignableFrom(type)){
return Datatype.Integer;
}else if(Float.class.isAssignableFrom(type)
||float.class.isAssignableFrom(type)){
return Datatype.Float;
}else if(Long.class.isAssignableFrom(type)
||long.class.isAssignableFrom(type)){
return Datatype.Long;
}else if(BigDecimal.class.isAssignableFrom(type)){
return Datatype.BigDecimal;
}else if(Double.class.isAssignableFrom(type)
||double.class.isAssignableFrom(type)){
return Datatype.Double;
}else if(Date.class.isAssignableFrom(type)){
return Datatype.Date;
}else if(Date.class.isAssignableFrom(type)){
return Datatype.Date;
}else if(List.class.isAssignableFrom(type)){
return Datatype.List;
}else if(Map.class.isAssignableFrom(type)){
return Datatype.Map;
}else if(Set.class.isAssignableFrom(type)){
return Datatype.Set;
}else if(Enum.class.isAssignableFrom(type)){
return Datatype.Enum;
}else if(Character.class.isAssignableFrom(type) || char.class.isAssignableFrom(type)){
return Datatype.Char;
}else{
return Datatype.Object;
}
}
}