Dynamic fields in ItemFileReader

[Jim Collins]

Hi,

I am updating a batch application that I want to port Spring Batch. At the moment when a file is processed the required fields in the file and the location of the files are downloaded from a database. There can be up to 85 fields in a file. The system was designed this way to allow users to quickly process new files.

Also the field delimeters are held in the database and string delimeters can be specified. For example if the field delimeter is ; and the string delimeter is " then this row:

1234;"test;123";blah

Should have these values:

1234
test;123
blah

Is it possible to handle these requirements in Spring Batch?

Thanks

JIM

[michael.lange]

when a file is processed the required fields in the file and the location of the files are downloaded from a database

should be possible, in Spring Batch semantics you would need something like:

• step which pulls the configuration
• configuration details put into JobContext to use them in the "reading" step
• either a dynamically* configured DelimitedLineTokenizer or ItemProcessor** which handles the tokenization/mapping

*through the JobContext configuration data
** one can keep the reader "dumb" and move tokenization/transformation to a processor, Spring Batch is quite flexible this way

[Jim Collins]

Thanks Michael.