Read CSV and write two differents xml files - best practices-CodePudding

I have a batch that reads a .csv file and maps its data into a POJO. I need to write two XML files as output. Currently, to write these two files, I generated classes via XJC from their XSD.

I am writing from a FlatFileItemWriter (written in a text file which is useless) via a delegator. It is in this delegator that I write my two XML files. The batch works fine, I produce both XML files as output, no problem. However, I'm not satisfied because I'm producing a useless empty .txt file and I'm using a FlatFileItemWriter, that's not the way to do it.

@Bean
@StepScope
public FlatFileItemWriter<MetaCsv> csvWriter(MetaAgregator aggregator) {
    FlatFileItemWriter<MetaCsv> flatFileItemWriter = new FlatFileItemWriter<>();
    String outFilePath = "resources/data/esopetosae/output/out.txt";
    flatFileItemWriter.setResource(new FileSystemResource(outFilePath));
    flatFileItemWriter.setLineAggregator(aggregator);
    flatFileItemWriter.setShouldDeleteIfExists(true);
    flatFileItemWriter.setShouldDeleteIfEmpty(true);
    return flatFileItemWriter;
}

Aggregator:

@Bean
public MetaAgregator aggregator() {
    return new MetaAgregator ();
}

How can I make my Writer manage the writing of the two different XML files (different rootXML, different structure and data) while keeping the aggregator? Is it possible?

CodePudding user response：

The FlatFileItemWriter is designed to write flat files, not XML files.

In your case, you can use a CompositeItemWriter with two StaxEventItemWriters as delegates to generate two XML files.

CodePudding user response：

Bonjour,

Merci pour le retour.

Je vais essayer avec CompositeItemWriter et deux StaxEventItemWriter. Mais pourrais je utiliser les classes Java générées avec Xjc qui me permettent d'écrire les XmL actuellement ?

Cdt,