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Commit 35cecc4

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Merge pull request #19 from VonChange/develop
Develop
2 parents db6e1e7 + 00f5fc8 commit 35cecc4

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‎README.md‎

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@@ -84,3 +84,24 @@ public class JdbcMybatisTestApplication {
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```
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## official spring data jdbc extend mybatis dynamic sql
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see spring-data-jdbc-demo
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configuration
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```
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@Configuration
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public class MybatisQuerySupportConfig {
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@Bean
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public NamedParameterJdbcOperations namedParameterJdbcOperations(DataSource dataSource) {
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return new MybatisJdbcTemplate(dataSource) {@Override protected Dialect dialect() {return new MySQLDialect();}};
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}
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}
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```
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use
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```
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@Query("user.queryByUserCode")
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List<UserDTO> queryByUserCode(@Param("userCode") String userCode);
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```
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but SpEL support became available with Spring Data JDBC 3.0 RC1

‎README.zh-CN.md‎

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[![](https://gitee.com/vonchange/spring-data-jdbc-mybatis/badge/star.svg?theme=dark)
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](https://gitee.com/vonchange/spring-data-jdbc-mybatis)
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**spring data jdbc 扩展 mybatis 动态sql能力**
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## What Is This?
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**简单点 开发的方法简单点 繁琐的功能请省略 你有不是个AI**
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## spring data jdbc 扩展 mybatis 动态sql能力
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### spring data jdbc官方直接 扩展 mybatis动态sql能力
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使用方式和官方教程一直 引入spring-boot-starter-data-jdbc 即可
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只需要配置魔改的NamedParameterJdbcTemplate 即可
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```
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@Configuration
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public class MybatisQuerySupportConfig {
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@Bean
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public NamedParameterJdbcOperations namedParameterJdbcOperations(DataSource dataSource) {
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return new MybatisJdbcTemplate(dataSource) {@Override protected Dialect dialect() {return new MySQLDialect();}};
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}
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}
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```
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@Query 的ID 是user.md里面ID是queryByUserCode的sql片段
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```
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@Query("user.queryByUserCode")
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List<UserDTO> queryByUserCode(@Param("userCode") String userCode);
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```
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具体使用参考spring-data-jdbc-demo
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但是 @Query spring 6(jdk17以上) 以上才支持SPEL 不支持实体参数
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通过改代码可以解决(支持mybatis版本的) 但有代码侵入性
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无法直接 根据方法名 自动查找sql片段
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### 更推荐自研版本spring data jdbc扩展 mybatis动态sql能力
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* 底层 jdbcTemplate 复杂SQL才需要mybatis动态模板能力 无QueryDSL 提供crudClient 和jdbcClient
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* 和spring data jdbc一样的追求简单,使用jdbcTemplate,调用jdbc。不提供缓存、延迟加载、QueryDSL等JPA或mybatis的许多特性。一个简单、有限、固执己见的ORM

‎jdbc-mybatis/pom.xml‎

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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>jdbc-mybatis</artifactId>
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<version>2.5.0.1</version>
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<version>2.5.1</version>
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<dependencies>
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<dependency>
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<groupId>com.vonchange.common</groupId>
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<artifactId>mybatis-sql-extend</artifactId>
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<version>2.5.0.1</version>
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<version>2.5.1</version>
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</dependency>
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<dependency>
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<groupId>com.vonchange.common</groupId>

‎jdbc-mybatis/src/main/java/com/vonchange/jdbc/core/CrudClient.java‎ renamed to ‎jdbc-mybatis/src/main/java/com/vonchange/jdbc/client/CrudClient.java‎

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package com.vonchange.jdbc.core;/*
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package com.vonchange.jdbc.client;/*
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* Copyright 2002-2023 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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*/
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import com.vonchange.jdbc.client.JdbcClient;
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import com.vonchange.jdbc.config.ConstantJdbc;
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import com.vonchange.jdbc.core.DefaultCrudClient;
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import com.vonchange.jdbc.mapper.AbstractPageWork;
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import com.vonchange.jdbc.model.DataSourceWrapper;
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import com.vonchange.mybatis.dialect.MySQLDialect;

‎jdbc-mybatis/src/main/java/com/vonchange/jdbc/core/DefaultCrudClient.java‎

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import com.vonchange.common.util.ConvertUtil;
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import com.vonchange.common.util.StringPool;
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import com.vonchange.jdbc.client.CrudClient;
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import com.vonchange.jdbc.client.JdbcClient;
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import com.vonchange.jdbc.config.ConstantJdbc;
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import com.vonchange.jdbc.config.EnumRWType;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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public class DefaultCrudClient implements CrudClient{
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public class DefaultCrudClient implements CrudClient{
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private static final Logger log = LoggerFactory.getLogger(DefaultCrudClient.class);
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private final MyJdbcTemplate classicOps;
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private final DataSourceWrapper dataSourceWrapper;
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package com.vonchange.jdbc.mybatis;
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import com.vonchange.common.util.StringPool;
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import com.vonchange.jdbc.model.SqlParam;
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import com.vonchange.jdbc.util.JdbcUtil;
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import com.vonchange.jdbc.util.MybatisTpl;
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import com.vonchange.mybatis.dialect.Dialect;
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import org.springframework.jdbc.core.JdbcOperations;
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import org.springframework.jdbc.core.PreparedStatementCreator;
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import org.springframework.jdbc.core.PreparedStatementCreatorFactory;
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import org.springframework.jdbc.core.SqlParameter;
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import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
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import org.springframework.jdbc.core.namedparam.NamedParameterUtils;
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import org.springframework.jdbc.core.namedparam.ParsedSql;
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import org.springframework.jdbc.core.namedparam.SqlParameterSource;
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import org.springframework.jdbc.support.JdbcUtils;
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import org.springframework.lang.Nullable;
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import javax.sql.DataSource;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.function.Consumer;
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public abstract class MybatisJdbcTemplate extends NamedParameterJdbcTemplate {
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public MybatisJdbcTemplate(DataSource dataSource) {
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super(dataSource);
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}
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public MybatisJdbcTemplate(JdbcOperations classicJdbcTemplate) {
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super(classicJdbcTemplate);
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}
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protected PreparedStatementCreator getPreparedStatementCreator(String sql, SqlParameterSource paramSource,
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@Nullable Consumer<PreparedStatementCreatorFactory> customizer) {
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Map<String,Object> param =toMap(paramSource);
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SqlParam sqlParam = genSqlParam(sql,param);
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if(null==sqlParam){
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return getPreparedStatementCreatorOriginal(sql,paramSource,customizer);
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}
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Object[] paramObj=sqlParam.getParams().toArray();
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List<SqlParameter> declaredParameters = buildSqlParameterList(sqlParam.getParams());
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PreparedStatementCreatorFactory pscf = new PreparedStatementCreatorFactory(sqlParam.getSql(),declaredParameters);
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if (customizer != null) {
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customizer.accept(pscf);
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}
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return pscf.newPreparedStatementCreator(sqlParam.getSql(),paramObj);
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}
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protected PreparedStatementCreator getPreparedStatementCreatorOriginal(String sql, SqlParameterSource paramSource,
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@Nullable Consumer<PreparedStatementCreatorFactory> customizer) {
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ParsedSql parsedSql = getParsedSql(sql);
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PreparedStatementCreatorFactory pscf = getPreparedStatementCreatorFactory(parsedSql, paramSource);
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if (customizer != null) {
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customizer.accept(pscf);
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}
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Object[] params = NamedParameterUtils.buildValueArray(parsedSql, paramSource, null);
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return pscf.newPreparedStatementCreator(params);
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}
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protected abstract Dialect dialect();
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private SqlParam genSqlParam(String sql,Map<String,Object> param){
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if(!sql.contains(StringPool.SPACE)){
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return MybatisTpl.generate("sql."+sql,param,dialect());
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}
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if(sql.contains("[@")){//#{ spel 也有的 ||sql.contains("#{"
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return MybatisTpl.generate(sql,sql,param,dialect());
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}
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if(sql.contains("#{")){
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if(!sql.contains(":#{")){
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return MybatisTpl.generate(sql,sql,param,dialect());
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}
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}
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return null;
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}
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public static List<SqlParameter> buildSqlParameterList(Collection<?> param) {
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List<SqlParameter> params = new ArrayList<>(param.size());
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for (Object value : param) {
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if(null==value){
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params.add(new SqlParameter(JdbcUtils.TYPE_UNKNOWN));
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continue;
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}
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params.add(new SqlParameter(JdbcUtil.sqlTypeFor(value.getClass())));
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}
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return params;
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}
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public static List<SqlParameter> buildSqlParameterListX(SqlParameterSource paramSource) {
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String[] paramNames = paramSource.getParameterNames();
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if (paramNames == null) {
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return new ArrayList<>();
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}
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List<SqlParameter> params = new ArrayList<>(paramNames.length);
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for (String paramName : paramNames) {
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params.add(new SqlParameter(
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paramName, paramSource.getSqlType(paramName), paramSource.getTypeName(paramName)));
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}
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return params;
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}
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private Map<String,Object> toMap( SqlParameterSource paramSource){
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String[] parameterNames = paramSource.getParameterNames();
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Map<String,Object> map = new HashMap<>();
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if(null==parameterNames){
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return map;
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}
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for (String paramName : parameterNames) {
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map.put(paramName,paramSource.getValue(paramName));
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}
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return map;
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}
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}
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/*
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* Copyright 2017-2020 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.vonchange.jdbc.util;
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import org.springframework.jdbc.support.JdbcUtils;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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import java.sql.Date;
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import java.sql.Time;
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import java.sql.Timestamp;
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import java.sql.Types;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Contains methods dealing with the quirks of JDBC, independent of any Entity, Aggregate or Repository abstraction.
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*
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* @author Jens Schauder
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*/
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public class JdbcUtil {
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private static final Map<Class<?>, Integer> sqlTypeMappings = new HashMap<>();
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static {
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sqlTypeMappings.put(String.class, Types.VARCHAR);
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sqlTypeMappings.put(BigInteger.class, Types.BIGINT);
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sqlTypeMappings.put(BigDecimal.class, Types.NUMERIC);
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sqlTypeMappings.put(Byte.class, Types.TINYINT);
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sqlTypeMappings.put(byte.class, Types.TINYINT);
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sqlTypeMappings.put(Short.class, Types.SMALLINT);
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sqlTypeMappings.put(short.class, Types.SMALLINT);
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sqlTypeMappings.put(Integer.class, Types.INTEGER);
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sqlTypeMappings.put(int.class, Types.INTEGER);
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sqlTypeMappings.put(Long.class, Types.BIGINT);
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sqlTypeMappings.put(long.class, Types.BIGINT);
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sqlTypeMappings.put(Double.class, Types.DOUBLE);
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sqlTypeMappings.put(double.class, Types.DOUBLE);
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sqlTypeMappings.put(Float.class, Types.REAL);
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sqlTypeMappings.put(float.class, Types.REAL);
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sqlTypeMappings.put(Boolean.class, Types.BIT);
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sqlTypeMappings.put(boolean.class, Types.BIT);
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sqlTypeMappings.put(byte[].class, Types.VARBINARY);
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sqlTypeMappings.put(Date.class, Types.DATE);
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sqlTypeMappings.put(Time.class, Types.TIME);
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sqlTypeMappings.put(Timestamp.class, Types.TIMESTAMP);
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}
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public static int sqlTypeFor(Class<?> type) {
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return sqlTypeMappings.keySet().stream() //
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.filter(k -> k.isAssignableFrom(type)) //
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.findFirst() //
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.map(sqlTypeMappings::get) //
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.orElse(JdbcUtils.TYPE_UNKNOWN);
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}
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}

‎mybatis-sql-extend-test/pom.xml‎

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<artifactId>mybatis-sql-extend-test</artifactId>
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<version>2.5.0</version>
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<properties>
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<spring.jdbc.mybatis>2.5.0</spring.jdbc.mybatis>
17+
<spring.jdbc.mybatis>2.5.1</spring.jdbc.mybatis>
1818
<mysql-connector-java.version>8.0.15</mysql-connector-java.version>
1919
</properties>
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<dependencies>

‎mybatis-sql-extend/pom.xml‎

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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>mybatis-sql-extend</artifactId>
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<version>2.5.0.1</version>
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<version>2.5.1</version>
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<dependencies>
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<dependency>
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<groupId>com.vonchange.common</groupId>
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package com.vonchange.mybatis.dialect;
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public class H2MySqlDialect extends MySQLDialect {
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@Override
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public int getBigDataFetchSize() {
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return 500;
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}
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@Override
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public int getFetchSize() {
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return -1;
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}
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@Override
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public String getDialogName() {
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return "h2-mysql";
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}
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}

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