Graphical message mapping is used to change the filename and store it in a field of the target message. ![]() The actual content of the trigger file does not matter. Scenario 2 – polls the directory for the trigger file, once trigger file is found, pick up additionally the target fileīelow are the design and configuration for the scenariosīased on incoming message containing filename to be picked up, create a trigger file in the directory with the same filename except having a different extension, i.e.Scenario 1 – based on dynamically specified target filename to be picked up, create a trigger file in same directory.The basic idea is to have two interface scenarios as described below: This blog details an approach to achieve such requirement using the Additional Files feature of the sender File (only NFS protocol) or SFTP adapter. The following blog describes in more detail why XI mappings should be free of side effects. Due to the side effect, failed messages cannot be reprocessed with a guarantee that the behaviour is still the same. This mapping program is now stateful and introduces a side effect. listen on, accept connections on, or multicast from a network socket.įor more on these restrictions, see chapter 25.1.2 of the EJB 2.1 specification.Īn example of such violation is if the file IO operation moves the file after pickup.use the package java.io (writing to or reading from file system),.load and use JDBC drivers (use instead the Lookup API),.Note for Java mapping programs (user-defined functions and Imported Archives), the programming restrictions imposed on J2EE application providers and especially the restrictions imposed on J2EE EJB providers are valid. SAP’s PI JavaDocs clearly documents this for the package .tf7.rt (used for Function Libraries and UDFs.) Although it is technically feasible, it violates EJB 2.1 specification. One approach to achieve this is to code a file IO operation in a mapping UDF. Receiver channels can only deliver files but not pick files.Sender channels can only pick up based on static definitions.This cannot be achieved with the standard adapters because: Occasionally, there are requirements to dynamically pick up files based on the file name provided in the content of a message payload. ![]() Although placeholders, regex and wildcards are allowed, it is still a static definition. SAP’s file based adapters (NFS, FTP, SFTP) provide the file name scheme/pattern to specify which files should be picked. Typically, file based interfaces involve pickup of files for further processing. Update : Add Sync-Async bridge as a use case
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