> Contributing to Daffodil is likely not an option for my company.
That's sad to hear, and I hope you can try to persuade your company to change this position. Opensource works best with many contributors from many different organizations. And if your company depends on Daffodil, contributing back to it can help ensure its success and continued growth.
> Based on my limited understanding, this seems to suggest that I would have to add another infoset type to make use of the new class
If you're using the CLI, this is correct. Infoset inputters and outputters must currently be hardcoded in. If you're using the API to invoke Daffodil this isn't a problem, but if you're using the CLI then you must modify the CLI to support your new classes. This hasn't been an issue so far since anytime a new one is needed we just added it to Daffodil.
Part of the reason for this is that creating InfosetInputters/Outputters and getting the result is very specific to the infoset representation. It's probably possible that the API could be made more generic, and then we could use a ServiceLoader or something to support pluggable infoset inputters/outputters, but that hasn't be a priority so far.
On 4/20/22 10:08 PM, Thompson, Mark M [US] (DS) wrote:
Hi Steve, I have been looking into your suggestions and researching the existing code and here Is where I'm at: - Contributing to Daffodil is likely not an option for my company. - I've been looking into XMLTextInfosetInputter and ScalaXMLInfosetOutputter for insight. What I don't understand (Java and Scala newby) is, having extended InfosetOutputter with a new class, the Daffodil parse operation magically has access to this new class. I see, in main.scala, where XMLTextInfosetOutputter and ScalaXMLInfosetOutputter are instantiated based on command line Input for infoset type. Based on my limited understanding, this seems to suggest that I would have To add another infoset type to make use of the new class. Can someone clear up my misunderstanding or point to some info that will cause the scales to fall From my eyes? Thank you for your time, Mark T -----Original Message----- From: Steve Lawrence <slawre...@apache.org> Sent: Friday, April 8, 2022 6:31 AM To: users@daffodil.apache.org Subject: EXT :Re: Extending JAPI for processing binary input with an XML Payload I've put a decent amount of thought into this issue, I'll add some additional info that might help out... > for example, the startSimple() method. It would be helpful to have an idea what a given method does normally when there is no class extension. The InfosetOutputter class is an abstract class with no default implementations, so an implementation of all functions, including startSimple, is required--InfosetInputters don't do anything by default. The InfosetOutputters that are bundled with Daffodil implement all of these functions to create the kind of infoset that is output (e.g. XML text, Scala Nodes, JSON). If you want to take a look at how our bundled implementations handle their logic, they are all in this folder: https://github.com/apache/daffodil/tree/main/daffodil-runtime1/src/main/scala/org/apache/daffodil/infoset If you plan to keep your InfosetOutputter outside of the Daffodil codebase, you'll need to implement all of the functions/logic yourself. Our current implementions are mostly private, so extending and overriding them to do you you want is likely not possible. A good place to start would be to pick one that that's close to what you want and modify the various functions as described in the example implementation in the runtime properties proposal: https://cwiki.apache.org/confluence/display/DAFFODIL/Proposal%3A+Runtime+Properties Alternatively, it might be easier to just add the support to our existing bundled InfosetOutputters to support this capability, and contribute that work to Daffodil. Not only will this probably be easier since you can reuse alot of the existing logic, but our ability to provide support greatly increases when it's related to things being added to Daffodil. This feature is a request we've seen multiple times--it would be a very welcome addition and we'd be happy help get it added to Daffodil. On 4/8/22 8:42 AM, Mike Beckerle wrote:Mark, There definitely are javadoc jars, and the javadoc is also online here (for release 3.3.0) https://daffodil.apache.org/docs/latest/javadoc/ <https://daffodil.apache.org/docs/latest/javadoc/> The source and javadoc jars are normally pulled down using maven or sbt. But you can find them directly on maven central also. For example for the daffodil-runtime1 jar, all the jars, compiled binary, sources, and the javadoc jar is at https://repo1.maven.org/maven2/org/apache/daffodil/daffodil-runtime1_2 .12/3.3.0/ <https://repo1.maven.org/maven2/org/apache/daffodil/daffodil-runtime1_ 2.12/3.3.0/> On Thu, Apr 7, 2022 at 10:07 PM Thompson, Mark M [US] (DS) <mark.m.thomp...@ngc.com <mailto:mark.m.thomp...@ngc.com>> wrote: Greetings to All,____ __ __ Caveat: I am new to Daffodil and DFDL. I’m familiar with the basic functionality and have successfully written____ DFDL schemas to handle text and binary inputs to the parse/unparse cycle (separate assignments). ____ __ __ I am working on a task that requires the processing of binary files containing an XML payload. The goal is to be____ able to validate the raw (un-escapified) XML against an XML schema during the parsing phase. I have been researching____ the Daffodil JAPI InfosetOutputter family of classes as a first step. I’ve also read Steve Lawrence’s write-up on the ____ RuntimePropertiies proposal. What I have yet to grasp or find is what InfosetOutputter functionality is to be extended .____ I’ve searched high and low but I have yet to find any detailed information on what basic functionality is provided by,____ for example, the startSimple() method. It would be helpful to have an idea what a given method does normally when____ there is no class extension.____ __ __ Can anyone recommend a place to start or a source of info on the InfosetOutputter family of classes?____ __ __ I am working in NetBeans and every class I find seems to indicate that:____ Javadoc not found. Either Javadoc documentation for this item does not exist or ____ you have not added specified Javadoc in the Java Platform Manager or the Library ____ Manager.____ __ __ Are there Javadoc(s) available corresponding to the Daffodil JAPI classes?____ __ __ It feels like I’m missing some basic configuration setup settings or files. Any guidance or suggestions will____ be greatly appreciated.____ __ __ Thank you for your time,____ Mark M. Thompson____ Northrop Grumman Defense Systems____ Software Engineer____ (818) 712-7439____ __ __
