Request on reference codes or projects with Customized PortObject

[KFDing]

Continuing the discussion from Custom PortObjects with heavy data makes loading workflows slow:

I have the same need to create a project based on customized PortObject ( I have created some indeed, but the performance was not so good, especially about the serialization part). Therefore, I want to look for projects with customized PortObject as references.

When I checked the link code from TreeEnsembleModelPortObject.jave, I couldn’t find it. Maybe the update??

Anyway, if you have some experience with the customized PortObject, could you recommend me??

Thanks a lot

Kefang

[qqilihq]

I suggest having a look here, this gave me a good kick start:

Custom PortObjects with heavy data makes loading workflows slow

Hi, we've some nodes (the Palladian TextClassifier, to be precise), which make use of a custom PortObject to hand around the model. Internally, the model is a Java class which gets serialized by a corresponding PortObjectSerializer using an ObjectOutputStream. Now, these models can usually become quite large, which is not an issue per se, beside one annyoing thing: When opening an existing workflow which contains the mentioned data, KNIME immediately invokes the PortObjectSerializer.loadPortO…

– Philipp

[KFDing]

@qqilihq

Palladian TextClassifier

Do you have any idea where the codes are??

[qqilihq]

The PTC is currently not in a public repo.

However you should be able to find several classes which extend FileStorePortObject in the KNIME Git. (I like to use GitHub’s search functionality for that)

– Philipp

[KFDing]

Thanks, I have found the FileStoragePortObject but still couldn’t find class TreeEnsembleModelPortObject.java
Really wish there exist some public projects based on PortObject

Kefang

[qqilihq]

I wasn’t really able to find the mentioned TreeEnsembleModelPortObject on GitHub either (probably I took it from the sources plugin back then).

However, there are the following classes which might give you some inspiration:

https://github.com/search?p=2&q=org%3Aknime+FileStorePortObject&type=Code

HTH,
Philipp

[gab1one]

Hi @KFDing,
You can see the source code of that file by following these steps:

1. Set your target platform to KNIME-AP-complete (https://github.com/knime/knime-sdk-setup/blob/master/org.knime.sdk.setup/KNIME-AP-complete.target)

2. Press the Add All Plug-ins to Java Workspace Scope button in the plug-ins view:
   

   

3. Press CTRL+SHIFT+T and type TreeEnsembleModelPortObject, wait a bit for the search to finish.

4. Enjoy the source code

best,
Gabriel