'canal adapter deal with ddl and dml ,I don't understand the order in which they are executed

the code in com.alibaba.otter.canal.client.adapter.rdb.service.RdbMirrorDbSyncService#sync:

 if (dml.getIsDdl() != null && dml.getIsDdl() && StringUtils.isNotEmpty(dml.getSql())) {
            // executing  DDL
           ... 
            executeDdl(mirrorDbConfig, dml);
            ....
        } else {
            // DML add to the list
            initMappingConfig(dml.getTable(), mirrorDbConfig.getMappingConfig(), mirrorDbConfig, dml);
            dmlList.add(dml);
        }
    }
    if (!dmlList.isEmpty()) {  // d
        // doing dml list
    }
asyncdata


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