CODEWITHSUNDEEP
xmldomspring-batch
saab
saab

Reputation: 139

Spring batch: read xml as DOM Document

I want to read a large xml file which includes n number of elements 'elem1'. n can be up to 10.000 or more. I want to read each eleme1 as a DOM document, process it and read next elem1 etc. All articles I found so far suggest using StaxEventItemReader. But I don't want to map the peeked 'elem1' to an object but a DOM document. The reason is, that the business logic which I want to integrate in proccessor allready exists. The logic handles with a DOM Document(reading Nodes etc..). However StaxEventItemReader expects a class type to map the read data to. Is there any way to read data just as a dom document? I was thinking of a multiline records reader and defining open/close tags as tockenizers. But I don't know if this is possible and whether it is the right way?

 <root>
    <elem1>
        <a>...</a>
        <b>...</b>
    </elem1> 

    <elem1>
        <a>...</a>
        <b>...</b>
        <c>...</c>
    </elem1> 

</root>

Upvotes: 0

Views: 287

Answers (1)

Mahmoud Ben Hassine
Mahmoud Ben Hassine

Reputation: 31590

Since you are able to parse a string element into a DOM object, you can proceed as follows:

  • Use a StaxEventItemReader<String> to read string elements
  • Use a processor to transform string items into DOM items
  • Add another processor (in a composite processor) to process DOM items as needed (call the business logic that you already have and which expects DOM items)

Upvotes: 1

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