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SQL Anywhere 12.0.0 (中文) » MobiLink - 服务器管理 » MobiLink 事件 » 同步事件 » MobiLink 事件概述

 

下载过程中的事件

下面的伪代码概述了调用下载事件以及调用同名脚本的序列。

这些事件在MobiLink 事件概述中提供的完整事件模型中的下载位置发生。



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prepare_for_download
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generate_next_last_download_timestamp
modify_last_download_timestamp
fetch the next download timestamp from consolidated
prepare_for_download

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download
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begin_download // Connection event.
for each table being synchronized {
   begin_download // Table event.
}
   handle_DownloadData
   for each table being synchronized {
     begin_download_deletes
     for each row in download_delete_cursor {
       if( all primary key columns are NULL ) {
         send TRUNCATE to remote
       } else {
         send DELETE to remote
       }
     }
     end_download_deletes
     begin_download_rows
     for each row in download_cursor {
       send INSERT ON EXISTING UPDATE to remote
     }
     end_download_rows
   }
   modify_next_last_download_timestamp
   for each table being synchronized {
     if( begin_download table script was processed ) {
        end_download // Table event
     }
}
if( begin_download connect script was processed ) {
   end_download // Connection event
}
   for each table being synchronized {
     download_statistics   // Table event.
   }
     download_statistics   // Connection event.

COMMIT
 注意