如何在java ee batch / jberet中访问分区属性

问题描述 投票:1回答:2

我的工作定义如下:

<step id="file-transfer">
    <chunk checkpoint-policy="item" item-count="10" retry-limit="10">
        <reader ref="allTrusteeCustomerFilesReader">
            <properties>
                <property name="part-page-first-offset" value="#{partitionPlan['part-page-first-offset']}"/>
                <property name="part-page-last-offset" value="#{partitionPlan['part-page-last-offset']}"/>
                <property name="part-page-length" value="#{partitionPlan['part-page-length']}"/>
                <property name="part-sort-field" value="#{partitionPlan['part-sort-field']}"/>
                <property name="part-sort-ascending" value="#{partitionPlan['part-sort-ascending']}"/>
            </properties>
        </reader>
        <processor ref="customerFileLocalToGoogleStorageProcessor"/>
        <writer ref="customerFileWriter">
            <properties>
                <property name="set-google-cloud-migrated" value="true"/>
            </properties>
        </writer>


        <skippable-exception-classes>
            <include class="be.valuya.gestemps.server.file.batch.error.NoLocalStorageDataException"/>
            <include class="be.valuya.gestemps.server.file.batch.error.TargetAlreadyPresentException"/>
            <include class="be.valuya.gestemps.server.file.batch.error.CustomerFileAlreadyMigratedException"/>
        </skippable-exception-classes>
        <retryable-exception-classes>
            <include class="be.valuya.gestemps.server.file.batch.error.TransferToGoogleFailedException"/>
        </retryable-exception-classes>
    </chunk>

    <partition>
        <mapper ref="customerFilePartitionMapper"/>
    </partition>

    <end on="COMPLETED"/>
</step>

引用的映射器创建具有定义值的属性数组,并返回它:

    PartitionPlanImpl partitionPlan = new PartitionPlanImpl();
    partitionPlan.setPartitions(partitionCount);
    partitionPlan.setPartitionProperties(partitionProperties);

    return partitionPlan;

在启动步骤时正确调用它,并返回定义了正确键的属性。

但是,我无法从我的阅读器步骤中获取分区计划属性。作业上下文属性或步骤上下文属性均不包含任何内容。我在控制台中没有看到错误。作业实例参数仅包含在运行时设置的参数。参数/属性名称没有冲突。尝试使用@BatchProperty注入它们,将字段保留为空。

批处理开始如下:

    Properties properties = new Properties();
    // Fill parameters...
    long executionId = jobOperator.start(jobName, properties);

我想念什么?

jakarta-ee jsr352 jberet
2个回答
0
投票

要查看工作中的分区属性,您需要将项目读取器属性注入到项目读取器类中。例如,


0
投票

分区计划是在Properties映射中放入整数。似乎需要字符串:

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