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75 lines
3.5 KiB
Java
75 lines
3.5 KiB
Java
package com.glxp.api.config;
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import com.baomidou.mybatisplus.annotation.IdType;
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import com.baomidou.mybatisplus.core.enums.SqlMethod;
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import com.baomidou.mybatisplus.core.injector.AbstractMethod;
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import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
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import com.baomidou.mybatisplus.core.metadata.TableInfo;
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import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
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import com.baomidou.mybatisplus.core.toolkit.StringUtils;
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import com.baomidou.mybatisplus.core.toolkit.sql.SqlScriptUtils;
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import lombok.Setter;
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import lombok.experimental.Accessors;
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import org.apache.ibatis.executor.keygen.Jdbc3KeyGenerator;
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import org.apache.ibatis.executor.keygen.KeyGenerator;
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import org.apache.ibatis.executor.keygen.NoKeyGenerator;
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import org.apache.ibatis.mapping.MappedStatement;
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import org.apache.ibatis.mapping.SqlSource;
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import java.util.List;
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import java.util.function.Predicate;
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/**
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* 替换数据实现类
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* 替换数据，如果中已经存在相同的记录，则覆盖旧数据
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*/
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public class ReplaceBatch extends AbstractMethod {
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/**
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* mapper 对应的方法名
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*/
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private static final String MAPPER_METHOD = "replaceBatch";
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/**
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* 字段筛选条件
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*/
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@Setter
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@Accessors(chain = true)
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private Predicate<TableFieldInfo> predicate;
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@Override
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public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
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KeyGenerator keyGenerator = new NoKeyGenerator();
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CustomerSqlMethod sqlMethod = CustomerSqlMethod.REPLACE_ONE;
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List<TableFieldInfo> fieldList = tableInfo.getFieldList();
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// String columnScript = SqlScriptUtils.convertTrim(tableInfo.getAllInsertSqlColumnMaybeIf(null),
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// LEFT_BRACKET, RIGHT_BRACKET, null, COMMA);
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String insertSqlColumn = tableInfo.getKeyInsertSqlColumn(true, true) +
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this.filterTableFieldInfo(fieldList, predicate, TableFieldInfo::getInsertSqlColumn, EMPTY);
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String columnScript = LEFT_BRACKET + insertSqlColumn.substring(0, insertSqlColumn.length() - 1) + RIGHT_BRACKET;
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String insertSqlProperty = tableInfo.getKeyInsertSqlProperty(true, ENTITY_DOT, true) +
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this.filterTableFieldInfo(fieldList, predicate, i -> i.getInsertSqlProperty(ENTITY_DOT), EMPTY);
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insertSqlProperty = LEFT_BRACKET + insertSqlProperty.substring(0, insertSqlProperty.length() - 1) + RIGHT_BRACKET;
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String valuesScript = SqlScriptUtils.convertForeach(insertSqlProperty, "list", null, ENTITY, COMMA);
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String keyProperty = null;
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String keyColumn = null;
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// 表包含主键处理逻辑,如果不包含主键当普通字段处理
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if (StringUtils.isNotBlank(tableInfo.getKeyProperty())) {
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if (null != tableInfo.getKeySequence()) {
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keyGenerator = TableInfoHelper.genKeyGenerator(sqlMethod.getMethod(), tableInfo, builderAssistant);
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keyProperty = tableInfo.getKeyProperty();
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keyColumn = tableInfo.getKeyColumn();
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}
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}
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String sql = String.format(sqlMethod.getSql(), tableInfo.getTableName(), columnScript, valuesScript);
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SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql, modelClass);
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return this.addInsertMappedStatement(mapperClass, modelClass, MAPPER_METHOD, sqlSource, keyGenerator, keyProperty, keyColumn);
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}
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@Override
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public String getMethod(SqlMethod sqlMethod) {
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// 自定义 mapper 方法名
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return MAPPER_METHOD;
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}
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}
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