Developper documentation¶

Business Classes : the EJB of WIDE
h3. The data transfer service¶

data_transfer_service EJB aim to provide a request system to process upload files. It uses the imageDatabase as a container for upload request that client can access to request uploads. The cicero upload daemon will do the effective upload with a low bandwidth usage.

Interface of the upload service
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Typical use of the interface¶

1. Connecting to the EJB¶

InitialContext ctx = new InitialContext();
uploadService = (UploadService) ctx.lookup("fr.cnrs.mri.service.transfer.UploadService");

2. Retrieving the next file to process¶

FileUploadInformation fileUploadInformation = uploadService.getNextUploadInformation("localhost");

The getNextUploadInformation return the actives upload request (i.e. the request which status is "created", "pending" or "running") for a host. This method return a FileUploadInformation object which gather information from UploadStatus, FileReference and UploadRequest.

The persitence class
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