spring-batch

问题 I have a compositeItemProcessor as below <bean id="compositeItemProcessor" class="org.springframework.batch.item.support.CompositeItemProcessor"> <property name="delegates"> <list> <bean class="com.example.itemProcessor1"/> <bean class="com.example.itemProcessor2"/> <bean class="com.example.itemProcessor3"/> <bean class="com.example.itemProcessor4"/> </list> </property> </bean> The issue i have is that within itemProcessor4 i require values from both itemProcessor1 and itemProcessor3. I have

问题 I am working with Spring Batch(using Spring boot). My requirement is to read data from db, process it(validations and stuffs) and write it to a file. I am trying to achieve this using a batch step. Problem is , if i define a step, the reader,processor and writer should be having similar parameters.(from examples i saw and the error i got) Like if my reader is returning a db domain object, the processor and writer should be having domain object parameters. What i am looking for is , reader

问题 I am working with Spring Batch(using Spring boot). My requirement is to read data from db, process it(validations and stuffs) and write it to a file. I am trying to achieve this using a batch step. Problem is , if i define a step, the reader,processor and writer should be having similar parameters.(from examples i saw and the error i got) Like if my reader is returning a db domain object, the processor and writer should be having domain object parameters. What i am looking for is , reader

问题 I'm using spring batch 4.0 and i'm trying to test my batch. I would use embedded database h2 with @JpaDataTest but it doesn't work. When i add this annotation i got error java.lang.IllegalStateException: Existing transaction detected in JobRepository. Please fix this and try again (e.g. remove @Transactional annotations from client). @Transaction(propagation=Propagation.NEW_REQUIRED) on the @Test dosen't work. I tried to copy every annotations from @JpaDataTest and remove @Transaction

问题 I want to write a JUnit test case for a Spring managed bean which has the scope as "step". This bean is refereed by a Spring Batch Tasklet. Bean defintion for configDAO ConfigDAOImpl class <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:batch="http://www.springframework.org/schema

问题 I want to write a JUnit test case for a Spring managed bean which has the scope as "step". This bean is refereed by a Spring Batch Tasklet. Bean defintion for configDAO ConfigDAOImpl class <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:batch="http://www.springframework.org/schema

问题 I want to write a JUnit test case for a Spring managed bean which has the scope as "step". This bean is refereed by a Spring Batch Tasklet. Bean defintion for configDAO ConfigDAOImpl class <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:batch="http://www.springframework.org/schema

问题 I have a multi-threaded Step configured with a threadpool with a corePoolSize of 48 threads (it's a big machine) but I did not configure the throttle-limit . I am wondering if I have been under utilizaing the machine because of this. The Spring Batch documentation says that throttle-limit is the max amount of concurrent tasks that can run at one time and the default is 4 . I can see in jconsole that in fact there are 48 threads created and they seem to be executing (I can also see that in my

问题 I have a Junit test case which run a batch job. Previously It was working when I have spring batch version 2.1.2. But once I upgraded to version 4.1.1, am getting below exception java.lang.IllegalStateException: Existing transaction detected in JobRepository. Please fix this and try again (e.g. remove @Transactional annotations from client). I have tried removing @Transactional from test class. But still getting an exception.I guess the error is due to two transactions. But still removal of

问题 I would like to use Spring batch for a batch application. I already have a domain model designed following DDD. My question is how batch processing (in my case, using Spring batch) fits with DDD? For example, I have an aggregate root A and one of its children is the entity B. A has a list of one or more Bs. The batch application receives a file when each line corresponds to an operation (add, delete...) on the list of Bs. In my aggregate root A, I have one method for each operation (e.g. addB