package com.ruoyi.generator.service;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.StringWriter;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.function.Function;
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import java.util.stream.Collectors;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import org.apache.commons.io.FileUtils;
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import org.apache.commons.io.IOUtils;
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import org.apache.velocity.Template;
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import org.apache.velocity.VelocityContext;
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import org.apache.velocity.app.Velocity;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import com.alibaba.fastjson2.JSON;
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import com.alibaba.fastjson2.JSONObject;
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import com.ruoyi.common.constant.Constants;
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import com.ruoyi.common.constant.GenConstants;
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import com.ruoyi.common.core.text.CharsetKit;
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import com.ruoyi.common.exception.ServiceException;
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import com.ruoyi.common.utils.SecurityUtils;
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import com.ruoyi.common.utils.StringUtils;
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import com.ruoyi.generator.domain.GenTable;
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import com.ruoyi.generator.domain.GenTableColumn;
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import com.ruoyi.generator.mapper.GenTableColumnMapper;
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import com.ruoyi.generator.mapper.GenTableMapper;
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import com.ruoyi.generator.util.GenUtils;
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import com.ruoyi.generator.util.VelocityInitializer;
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import com.ruoyi.generator.util.VelocityUtils;
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/**
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* 业务 服务层实现
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*
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* @author ruoyi
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*/
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@Service
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public class GenTableServiceImpl implements IGenTableService
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{
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private static final Logger log = LoggerFactory.getLogger(GenTableServiceImpl.class);
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@Autowired
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private GenTableMapper genTableMapper;
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@Autowired
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private GenTableColumnMapper genTableColumnMapper;
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/**
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* 查询业务信息
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*
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* @param id 业务ID
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* @return 业务信息
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*/
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@Override
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public GenTable selectGenTableById(Long id)
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{
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GenTable genTable = genTableMapper.selectGenTableById(id);
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setTableFromOptions(genTable);
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return genTable;
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}
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/**
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* 查询业务列表
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*
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* @param genTable 业务信息
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* @return 业务集合
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*/
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@Override
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public List<GenTable> selectGenTableList(GenTable genTable)
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{
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return genTableMapper.selectGenTableList(genTable);
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}
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/**
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* 查询据库列表
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*
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* @param genTable 业务信息
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* @return 数据库表集合
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*/
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@Override
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public List<GenTable> selectDbTableList(GenTable genTable)
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{
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return genTableMapper.selectDbTableList(genTable);
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}
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/**
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* 查询据库列表
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*
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* @param tableNames 表名称组
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* @return 数据库表集合
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*/
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@Override
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public List<GenTable> selectDbTableListByNames(String[] tableNames)
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{
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return genTableMapper.selectDbTableListByNames(tableNames);
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}
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/**
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* 查询所有表信息
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*
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* @return 表信息集合
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*/
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@Override
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public List<GenTable> selectGenTableAll()
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{
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return genTableMapper.selectGenTableAll();
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}
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/**
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* 修改业务
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*
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* @param genTable 业务信息
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* @return 结果
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*/
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@Override
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@Transactional
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public void updateGenTable(GenTable genTable)
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{
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String options = JSON.toJSONString(genTable.getParams());
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genTable.setOptions(options);
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int row = genTableMapper.updateGenTable(genTable);
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if (row > 0)
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{
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for (GenTableColumn cenTableColumn : genTable.getColumns())
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{
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genTableColumnMapper.updateGenTableColumn(cenTableColumn);
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}
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}
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}
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/**
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* 删除业务对象
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*
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* @param tableIds 需要删除的数据ID
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* @return 结果
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*/
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@Override
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@Transactional
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public void deleteGenTableByIds(Long[] tableIds)
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{
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genTableMapper.deleteGenTableByIds(tableIds);
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genTableColumnMapper.deleteGenTableColumnByIds(tableIds);
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}
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/**
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* 导入表结构
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*
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* @param tableList 导入表列表
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*/
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@Override
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@Transactional
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public void importGenTable(List<GenTable> tableList)
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{
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String operName = SecurityUtils.getUsername();
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try
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{
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for (GenTable table : tableList)
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{
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String tableName = table.getTableName();
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GenUtils.initTable(table, operName);
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int row = genTableMapper.insertGenTable(table);
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if (row > 0)
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{
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// 保存列信息
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List<GenTableColumn> genTableColumns = genTableColumnMapper.selectDbTableColumnsByName(tableName);
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for (GenTableColumn column : genTableColumns)
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{
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GenUtils.initColumnField(column, table);
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genTableColumnMapper.insertGenTableColumn(column);
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}
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}
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}
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}
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catch (Exception e)
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{
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throw new ServiceException("导入失败：" + e.getMessage());
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}
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}
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/**
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* 预览代码
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*
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* @param tableId 表编号
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* @return 预览数据列表
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*/
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@Override
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public Map<String, String> previewCode(Long tableId)
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{
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Map<String, String> dataMap = new LinkedHashMap<>();
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// 查询表信息
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GenTable table = genTableMapper.selectGenTableById(tableId);
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// 设置主子表信息
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setSubTable(table);
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// 设置主键列信息
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setPkColumn(table);
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VelocityInitializer.initVelocity();
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VelocityContext context = VelocityUtils.prepareContext(table);
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// 获取模板列表
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List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory());
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for (String template : templates)
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{
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// 渲染模板
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StringWriter sw = new StringWriter();
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Template tpl = Velocity.getTemplate(template, Constants.UTF8);
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tpl.merge(context, sw);
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dataMap.put(template, sw.toString());
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}
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return dataMap;
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}
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/**
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* 生成代码（下载方式）
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*
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* @param tableName 表名称
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* @return 数据
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*/
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@Override
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public byte[] downloadCode(String tableName)
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{
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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ZipOutputStream zip = new ZipOutputStream(outputStream);
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generatorCode(tableName, zip);
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IOUtils.closeQuietly(zip);
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return outputStream.toByteArray();
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}
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/**
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* 生成代码（自定义路径）
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*
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* @param tableName 表名称
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*/
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@Override
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public void generatorCode(String tableName)
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{
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// 查询表信息
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GenTable table = genTableMapper.selectGenTableByName(tableName);
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// 设置主子表信息
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setSubTable(table);
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// 设置主键列信息
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setPkColumn(table);
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VelocityInitializer.initVelocity();
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VelocityContext context = VelocityUtils.prepareContext(table);
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// 获取模板列表
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List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory());
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for (String template : templates)
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{
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if (!StringUtils.containsAny(template, "sql.vm", "api.js.vm", "index.vue.vm", "index-tree.vue.vm"))
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{
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// 渲染模板
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StringWriter sw = new StringWriter();
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Template tpl = Velocity.getTemplate(template, Constants.UTF8);
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tpl.merge(context, sw);
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try
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{
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String path = getGenPath(table, template);
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FileUtils.writeStringToFile(new File(path), sw.toString(), CharsetKit.UTF_8);
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}
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catch (IOException e)
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{
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throw new ServiceException("渲染模板失败，表名：" + table.getTableName());
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}
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}
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}
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}
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/**
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* 同步数据库
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*
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* @param tableName 表名称
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*/
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@Override
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@Transactional
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public void synchDb(String tableName)
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{
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GenTable table = genTableMapper.selectGenTableByName(tableName);
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List<GenTableColumn> tableColumns = table.getColumns();
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Map<String, GenTableColumn> tableColumnMap = tableColumns.stream().collect(Collectors.toMap(GenTableColumn::getColumnName, Function.identity()));
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List<GenTableColumn> dbTableColumns = genTableColumnMapper.selectDbTableColumnsByName(tableName);
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if (StringUtils.isEmpty(dbTableColumns))
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{
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throw new ServiceException("同步数据失败，原表结构不存在");
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}
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List<String> dbTableColumnNames = dbTableColumns.stream().map(GenTableColumn::getColumnName).collect(Collectors.toList());
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dbTableColumns.forEach(column -> {
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GenUtils.initColumnField(column, table);
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if (tableColumnMap.containsKey(column.getColumnName()))
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{
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GenTableColumn prevColumn = tableColumnMap.get(column.getColumnName());
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column.setColumnId(prevColumn.getColumnId());
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if (column.isList())
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{
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// 如果是列表，继续保留查询方式/字典类型选项
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column.setDictType(prevColumn.getDictType());
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column.setQueryType(prevColumn.getQueryType());
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}
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if (StringUtils.isNotEmpty(prevColumn.getIsRequired()) && !column.isPk()
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&& (column.isInsert() || column.isEdit())
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&& ((column.isUsableColumn()) || (!column.isSuperColumn())))
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{
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// 如果是(新增/修改&非主键/非忽略及父属性)，继续保留必填/显示类型选项
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column.setIsRequired(prevColumn.getIsRequired());
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column.setHtmlType(prevColumn.getHtmlType());
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}
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genTableColumnMapper.updateGenTableColumn(column);
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}
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else
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{
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genTableColumnMapper.insertGenTableColumn(column);
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}
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});
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List<GenTableColumn> delColumns = tableColumns.stream().filter(column -> !dbTableColumnNames.contains(column.getColumnName())).collect(Collectors.toList());
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if (StringUtils.isNotEmpty(delColumns))
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{
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genTableColumnMapper.deleteGenTableColumns(delColumns);
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}
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}
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/**
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* 批量生成代码（下载方式）
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*
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* @param tableNames 表数组
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* @return 数据
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*/
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@Override
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public byte[] downloadCode(String[] tableNames)
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{
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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ZipOutputStream zip = new ZipOutputStream(outputStream);
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for (String tableName : tableNames)
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{
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generatorCode(tableName, zip);
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}
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IOUtils.closeQuietly(zip);
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return outputStream.toByteArray();
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}
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/**
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* 查询表信息并生成代码
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*/
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private void generatorCode(String tableName, ZipOutputStream zip)
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{
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// 查询表信息
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GenTable table = genTableMapper.selectGenTableByName(tableName);
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// 设置主子表信息
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setSubTable(table);
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// 设置主键列信息
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setPkColumn(table);
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VelocityInitializer.initVelocity();
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VelocityContext context = VelocityUtils.prepareContext(table);
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// 获取模板列表
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List<String> templates = VelocityUtils.getTemplateList(table.getTplCategory());
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for (String template : templates)
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{
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// 渲染模板
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StringWriter sw = new StringWriter();
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Template tpl = Velocity.getTemplate(template, Constants.UTF8);
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tpl.merge(context, sw);
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try
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{
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// 添加到zip
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zip.putNextEntry(new ZipEntry(VelocityUtils.getFileName(template, table)));
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IOUtils.write(sw.toString(), zip, Constants.UTF8);
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IOUtils.closeQuietly(sw);
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zip.flush();
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zip.closeEntry();
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}
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catch (IOException e)
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{
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log.error("渲染模板失败，表名：" + table.getTableName(), e);
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}
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}
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}
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/**
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* 修改保存参数校验
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*
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* @param genTable 业务信息
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*/
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@Override
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public void validateEdit(GenTable genTable)
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{
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if (GenConstants.TPL_TREE.equals(genTable.getTplCategory()))
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{
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String options = JSON.toJSONString(genTable.getParams());
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JSONObject paramsObj = JSON.parseObject(options);
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if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_CODE)))
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{
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throw new ServiceException("树编码字段不能为空");
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}
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else if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_PARENT_CODE)))
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{
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throw new ServiceException("树父编码字段不能为空");
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}
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else if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_NAME)))
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{
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throw new ServiceException("树名称字段不能为空");
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}
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else if (GenConstants.TPL_SUB.equals(genTable.getTplCategory()))
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{
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if (StringUtils.isEmpty(genTable.getSubTableName()))
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{
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throw new ServiceException("关联子表的表名不能为空");
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}
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else if (StringUtils.isEmpty(genTable.getSubTableFkName()))
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{
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throw new ServiceException("子表关联的外键名不能为空");
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}
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}
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}
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}
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/**
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* 设置主键列信息
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*
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* @param table 业务表信息
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*/
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public void setPkColumn(GenTable table)
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{
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for (GenTableColumn column : table.getColumns())
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{
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if (column.isPk())
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{
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table.setPkColumn(column);
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break;
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}
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}
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if (StringUtils.isNull(table.getPkColumn()))
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{
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table.setPkColumn(table.getColumns().get(0));
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}
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if (GenConstants.TPL_SUB.equals(table.getTplCategory()))
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{
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for (GenTableColumn column : table.getSubTable().getColumns())
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{
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if (column.isPk())
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{
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table.getSubTable().setPkColumn(column);
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break;
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}
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}
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if (StringUtils.isNull(table.getSubTable().getPkColumn()))
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{
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table.getSubTable().setPkColumn(table.getSubTable().getColumns().get(0));
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}
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}
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}
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/**
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* 设置主子表信息
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*
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* @param table 业务表信息
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*/
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public void setSubTable(GenTable table)
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{
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String subTableName = table.getSubTableName();
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if (StringUtils.isNotEmpty(subTableName))
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{
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table.setSubTable(genTableMapper.selectGenTableByName(subTableName));
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}
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}
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/**
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* 设置代码生成其他选项值
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*
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* @param genTable 设置后的生成对象
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*/
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public void setTableFromOptions(GenTable genTable)
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{
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JSONObject paramsObj = JSON.parseObject(genTable.getOptions());
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if (StringUtils.isNotNull(paramsObj))
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{
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String treeCode = paramsObj.getString(GenConstants.TREE_CODE);
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String treeParentCode = paramsObj.getString(GenConstants.TREE_PARENT_CODE);
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String treeName = paramsObj.getString(GenConstants.TREE_NAME);
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String parentMenuId = paramsObj.getString(GenConstants.PARENT_MENU_ID);
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String parentMenuName = paramsObj.getString(GenConstants.PARENT_MENU_NAME);
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genTable.setTreeCode(treeCode);
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genTable.setTreeParentCode(treeParentCode);
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genTable.setTreeName(treeName);
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genTable.setParentMenuId(parentMenuId);
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genTable.setParentMenuName(parentMenuName);
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}
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}
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/**
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* 获取代码生成地址
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*
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* @param table 业务表信息
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* @param template 模板文件路径
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* @return 生成地址
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*/
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public static String getGenPath(GenTable table, String template)
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{
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String genPath = table.getGenPath();
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if (StringUtils.equals(genPath, "/"))
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{
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return System.getProperty("user.dir") + File.separator + "src" + File.separator + VelocityUtils.getFileName(template, table);
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}
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return genPath + File.separator + VelocityUtils.getFileName(template, table);
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}
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}
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