package com.hx.auto.manage.xml.scan.util;
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import com.gitee.sunchenbin.mybatis.actable.annotation.Column;
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import com.gitee.sunchenbin.mybatis.actable.annotation.Table;
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import com.gitee.sunchenbin.mybatis.actable.constants.MySqlTypeConstant;
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import com.hx.auto.GeneratorMapperUtil;
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import com.hx.auto.GeneratorReadXmlUtil;
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import com.hx.auto.common.JdbcType;
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import com.hx.auto.common.ReadEntityData;
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import com.hx.auto.util.CommonTool;
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import com.hx.auto.util.GeneratorClassParentUtil;
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import freemarker.template.Configuration;
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import freemarker.template.DefaultObjectWrapper;
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import freemarker.template.Template;
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import java.io.*;
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import java.lang.reflect.Field;
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import java.util.HashMap;
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/**
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* 自动生成mapper.xml
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*
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* @author chenjiahe 2019年09月08日23:57:47
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*
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*/
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public class CreateMapperUtil {
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private static String templateDir = "/ftl";//获取模板路径
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private static String templateName = "Mapper.tpl";//action模板名称
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/**生成mapper.xml
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* @param cl 实体类
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* @param configUtil 生成配置信息
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* @throws Exception
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*/
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public static void generatorMapper(Class<?> cl, ConfigUtil configUtil) throws Exception {
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try {
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// 反射start
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// 类名
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String entityName = cl.getSimpleName();
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//生成文件路径
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String targetFile = configUtil.getXmlUrl().replace(".", "/")+"/";
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//生成文件名称
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targetFile += entityName + "Mapper.xml";
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//补全路径
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targetFile = "./"+configUtil.getPackFileName().replace(".", "/")+"/"+targetFile;
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//获取是否已经生成过文件，拿取自定义的内容
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String xmlData = GeneratorReadXmlUtil.readMapperXml(targetFile);
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//如果不存在就直接跳过
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if("false".equals(xmlData)){
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return;
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}
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// 类名首字母小写
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String initial = entityName.substring(0, 1).toLowerCase();
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String entityNameSmall = initial + entityName.substring(1, entityName.length());
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//获取实体类包名
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String[] strs = cl.getName().split("\\.");
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String packageName = "";
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//去掉类名
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for(int i=0;i<strs.length-1;i++) {
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packageName += "."+strs[i];
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}
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packageName = packageName.replaceFirst(".", "");
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//获取模板
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Configuration configuration = new Configuration(Configuration.getVersion());
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configuration.setClassForTemplateLoading(GeneratorMapperUtil.class, templateDir);
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// 获取或创建模板
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Template template = configuration.getTemplate(templateName);
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//实体类所有的字段
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//用来存储数据
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ReadEntityData readEntityData = new ReadEntityData();
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//表名称
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Table table = cl.getAnnotation(Table.class);
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readEntityData.setTableName(table.name());
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// 取得本类的全部属性
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Field[] fields = cl.getDeclaredFields();
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fields = GeneratorClassParentUtil.getPatentFields(fields,cl);
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for (Field field:fields) {
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// 判断方法中是否有指定注解类型的注解
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boolean hasAnnotation = field.isAnnotationPresent(Column.class);
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if (hasAnnotation) {
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// 根据注解类型返回方法的指定类型注解
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Column column = field.getAnnotation(Column.class);
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//判断是不是
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boolean isBol = false;
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Integer isBlob = 0;
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if(column.type().equals(MySqlTypeConstant.TEXT)||column.type().equals(MySqlTypeConstant.LONGTEXT)
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||column.type().equals(MySqlTypeConstant.LONGBLOB)){
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isBol = true;
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isBlob = 1;
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}
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//类型
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//String type = column.type().toUpperCase();
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String type = JdbcType.jdbcTypeData(field.getType().getTypeName().toUpperCase(),isBol);
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//主键
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if (column.isKey()) {
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readEntityData.setEntityIdName(field.getName());
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readEntityData.setEntityIdData("#{"+field.getName()+"}");
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if(!CommonTool.checkNotNull(column.name())) {
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readEntityData.setTableIdName(field.getName());
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}else {
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readEntityData.setTableIdName(column.name());
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}
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readEntityData.setKeyType(type);
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continue;
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}
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//存储数据
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if(!CommonTool.checkNotNull(column.name())) {
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readEntityData.fielData(field.getName(),field.getName(),type,isBlob,"#{"+field.getName()+"}");
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}else {
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readEntityData.fielData(field.getName(),column.name(),type,isBlob,"#{"+field.getName()+"}");
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}
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}
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}
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// 创建数据模型
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HashMap<String, Object> root = new HashMap<String, Object>();
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root.put("packageEntityName",packageName);
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//实体类的类名
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root.put("entityName", entityName);
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//实体类的类名（首字母小写）
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root.put("entityNameSmall", entityNameSmall);
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//表字段 数据
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root.put("fieldData",readEntityData);
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root.put("sqlSentence","${sqlSentence}");
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root.put("DAOPackageName",configUtil.getDaoUrl());
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//实体类的包名
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root.put("entityPackageName",packageName);
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//获取是否已经生成过文件，拿取自定义的内容
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root.put("customData",xmlData);
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System.out.println("mapperUrl:"+targetFile);
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// 将模板和数据模型合并 输出到Console
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Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(targetFile), "UTF-8"));
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template.process(root, out);
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out.flush();
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out.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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