kandi X-RAY | spring-batch-demo Summary
kandi X-RAY | spring-batch-demo Summary
spring-batch-demo
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Top functions reviewed by kandi - BETA
- Aggregates a device command
- Gets the id
- Get the status
- Creates a device command from a line
- Sets the status of the response
- Set the ID of the document
- Main entry point
- Send DeviceCommand to device
spring-batch-demo Key Features
spring-batch-demo Examples and Code Snippets
Community Discussions
Trending Discussions on spring-batch-demo
QUESTION
I am trying to use the multiline IteamReader following the spring-batch-sample at https://github.com/spring-projects/spring-batch/tree/main/spring-batch-samples#multiline
I am running into compilation error as below -
I am sure there is something related to generics as it looking for class implementing ItemReader but the AggregateItemReader implements ItemReader.
...ANSWER
Answered 2021-Aug-22 at 10:15You need to be consistent in what the type of the items is that you want to handle on batch level. According to your step definition it is Trade
. By calling chunk(1)
on the step builder, you declare that your batch should read items of type Trade
with a chunk size of 1 (i.e. one at a time) and pass these on to a writer for items of type Trade
. In this case, you need to supply a reader of type ItemReader
, a writer of type ItemWriter
and optionally a processor of type ItemProcessor
.
The problem is that your reader is of type ItemReader>
, i.e. it does not yield a Trade
for each invocation of its read
method but a list of trades.
If you want to use the AggregateItemReader
you need to wrap it into a custom reader that works as an adapter and actually returns Trade
items and not List
.
For example, the custom read
method could look like this:
QUESTION
I am attempting to test a simple spring batch application.
Using the Spring Batch documentation as a guide (found here), I have created the following test class:
...ANSWER
Answered 2020-Jan-15 at 10:41I am using Spring Batch v4.2.0 and JUnit 5
You are using @RunWith(SpringRunner.class)
which is for JUnit 4. You need to use @ExtendWith(SpringExtension.class)
for JUnit 5 tests:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install spring-batch-demo
You can use spring-batch-demo like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the spring-batch-demo component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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