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@@ -0,0 +1,85 @@
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+package com.qmth.teachcloud.common.base.method;
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+
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+import com.baomidou.mybatisplus.core.injector.AbstractMethod;
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+import com.baomidou.mybatisplus.core.metadata.TableInfo;
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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 org.slf4j.Logger;
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+import org.slf4j.LoggerFactory;
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+import org.springframework.util.StringUtils;
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+
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+/**
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+ * @Description: 自定义插入或更新
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+ * @Param:
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+ * @return:
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+ * @Author: wangliang
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+ * @Date: 2022/5/11
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+ */
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+public class InsertOrUpdateBath extends AbstractMethod {
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+ private final static Logger log = LoggerFactory.getLogger(InsertOrUpdateBath.class);
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+
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+ @Override
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+ public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
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+ final String sql = "<script>insert into %s %s values %s ON DUPLICATE KEY UPDATE %s</script>";
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+ final String tableName = tableInfo.getTableName();
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+ final String filedSql = prepareFieldSql(tableInfo);
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+ final String modelValuesSql = prepareModelValuesSql(tableInfo);
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+ final String duplicateKeySql = prepareDuplicateKeySql(tableInfo);
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+ final String sqlResult = String.format(sql, tableName, filedSql, modelValuesSql, duplicateKeySql);
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+ SqlSource sqlSource = languageDriver.createSqlSource(configuration, sqlResult, modelClass);
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+ return this.addInsertMappedStatement(mapperClass, modelClass, "insertOrUpdateBath", sqlSource, new NoKeyGenerator(), null, null);
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+ }
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+
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+ /**
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+ * 准备ON DUPLICATE KEY UPDATE sql
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+ *
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+ * @param tableInfo
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+ * @return
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+ */
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+ private String prepareDuplicateKeySql(TableInfo tableInfo) {
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+ final StringBuilder duplicateKeySql = new StringBuilder();
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+ if (!StringUtils.isEmpty(tableInfo.getKeyColumn())) {
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+ duplicateKeySql.append(tableInfo.getKeyColumn()).append("=values(").append(tableInfo.getKeyColumn()).append("),");
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+ }
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+
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+ tableInfo.getFieldList().forEach(x -> {
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+ duplicateKeySql.append(x.getColumn())
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+ .append("=values(")
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+ .append(x.getColumn())
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+ .append("),");
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+ });
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+ duplicateKeySql.delete(duplicateKeySql.length() - 1, duplicateKeySql.length());
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+ return duplicateKeySql.toString();
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+ }
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+
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+ /**
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+ * 准备属性名
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+ *
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+ * @param tableInfo
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+ * @return
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+ */
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+ private String prepareFieldSql(TableInfo tableInfo) {
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+ StringBuilder fieldSql = new StringBuilder();
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+ fieldSql.append(tableInfo.getKeyColumn()).append(",");
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+ tableInfo.getFieldList().forEach(x -> {
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+ fieldSql.append(x.getColumn()).append(",");
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+ });
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+ fieldSql.delete(fieldSql.length() - 1, fieldSql.length());
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+ fieldSql.insert(0, "(");
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+ fieldSql.append(")");
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+ return fieldSql.toString();
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+ }
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+
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+ private String prepareModelValuesSql(TableInfo tableInfo) {
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+ final StringBuilder valueSql = new StringBuilder();
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+ valueSql.append("<foreach collection=\"collection\" item=\"item\" index=\"index\" open=\"(\" separator=\"),(\" close=\")\">");
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+ if (!StringUtils.isEmpty(tableInfo.getKeyProperty())) {
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+ valueSql.append("#{item.").append(tableInfo.getKeyProperty()).append("},");
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+ }
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+ tableInfo.getFieldList().forEach(x -> valueSql.append("#{item.").append(x.getProperty()).append("},"));
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+ valueSql.delete(valueSql.length() - 1, valueSql.length());
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+ valueSql.append("</foreach>");
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+ return valueSql.toString();
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+ }
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+}
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