Question

我想将数据聚合成组，我该怎么做？我想为此使用聚合器（Spring Integration）。我的场景看起来像这样。

Spring Batch<-->Spring Integration File -->Reader-->Proccessor<-->[Gateway<->Aggregator]

{Male,Joe;Male,Dave;Female,Anne;Female,Jane}-->sequentialyto-->Gateway-->Aggregate-> Gender(Male,{Joe,Dave}...Gender{Female,{Anne,Jane})

发布策略是什么样的？我需要小代码片段

由于

Answer 1

我不确定你的Reader是什么，但Spring Integration提供了FileSplitter工具。您可以使用markers来确定聚合器是否已准备好发布。

我想说你需要releaseStrategy为false：

release-strategy-expression="false"

这意味着您的群组不会在正常情况下被释放。您无法确定要准备发布的组的大小。

在阅读文件的最后一行以及FileSplitter.FileMarker.Mark.END调用后，FileSplitter作为MessageGroupStore.expireMessageGroups(0)的最后一条消息发出的<xsd:attribute name="send-partial-result-on-expiry" type="xsd:string"> <xsd:annotation> <xsd:documentation> Specifies whether messages that expired should be aggregated and sent to the 'output-channel' or 'replyChannel'. Messages are expired when their containing MessageGroup expires. One of the ways of expiring MessageGroups is by configuring a MessageGroupStoreReaper. However MessageGroups can alternatively be expired by simply calling MessageGroupStore.expireMessageGroups(timeout). That could be accomplished via a ControlBus operation or by simply invoking that method if you have a reference to the MessageGroupStore instance. </xsd:documentation> </xsd:annotation> </xsd:attribute>将使该聚合器正常运行。但是仍然需要配置：

[SERVER] { Error: [IBM][CLI Driver] SQL1598N  An attempt to connect to the database server failed because of a licensing problem.  SQLSTATE=42968

[SERVER]

[SERVER]   errors: [],

[SERVER]   error: '[node-odbc] SQL_ERROR',

[SERVER]   message: '[IBM][CLI Driver] SQL1598N  An attempt to connect to the database server failed because of a licensing problem.  SQLSTATE=42968\r\n',

[SERVER]   state: '42968' }

在到期后正常发布群组。

Spring Aggregator聚合输入组

1 个答案: