package com.javaweb.generator.service.impl;
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import java.io.ByteArrayOutputStream;
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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.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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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.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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import com.javaweb.common.constant.Constants;
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import com.javaweb.common.constant.GenConstants;
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import com.javaweb.common.core.text.Convert;
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import com.javaweb.common.exception.BusinessException;
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import com.javaweb.common.utils.StringUtils;
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import com.javaweb.generator.domain.GenTable;
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import com.javaweb.generator.domain.GenTableColumn;
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import com.javaweb.generator.mapper.GenTableColumnMapper;
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import com.javaweb.generator.mapper.GenTableMapper;
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import com.javaweb.generator.service.IGenTableService;
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import com.javaweb.generator.util.GenUtils;
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import com.javaweb.generator.util.VelocityInitializer;
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import com.javaweb.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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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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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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* 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 ids 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(String ids)
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{
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genTableMapper.deleteGenTableByIds(Convert.toLongArray(ids));
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genTableColumnMapper.deleteGenTableColumnByIds(Convert.toLongArray(ids));
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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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* @param operName 操作人员
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*/
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@Override
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@Transactional
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public void importGenTable(List<GenTable> tableList, String operName)
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{
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for (GenTable table : tableList)
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{
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try
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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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catch (Exception e)
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{
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log.error("表名 " + table.getTableName() + " 导入失败：", e);
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}
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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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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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// 查询列信息
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List<GenTableColumn> columns = table.getColumns();
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setPkColumn(table, columns);
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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
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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[] generatorCode(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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* 批量生成代码
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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[] generatorCode(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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// 查询列信息
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List<GenTableColumn> columns = table.getColumns();
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setPkColumn(table, columns);
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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.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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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 = JSONObject.parseObject(options);
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if (StringUtils.isEmpty(paramsObj.getString(GenConstants.TREE_CODE)))
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{
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throw new BusinessException("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 BusinessException("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 BusinessException("树名称字段不能为空");
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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 genTable 业务表信息
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* @param columns 业务字段列表
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*/
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public void setPkColumn(GenTable table, List<GenTableColumn> columns)
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{
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for (GenTableColumn column : columns)
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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(columns.get(0));
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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 = JSONObject.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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genTable.setTreeCode(treeCode);
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genTable.setTreeParentCode(treeParentCode);
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genTable.setTreeName(treeName);
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}
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}
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}
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