RapidMiner

Operator not visible after installing extension

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Contributor II

Operator not visible after installing extension

Hi,

I want to make my own operator in rapidminer. I am using extension template provided on git. I am editing it as per instructions. But after installing it I am not able to see it in operator tree although its there in manage extensions. 

Please help me.

7 REPLIES
RMStaff

Re: Operator not visible after installing extension

Hi,

please check your src/main/resources folder. There you need a xml file named "OperatorsNameOfYourExtension.xml". In it you define a key which is linked to the operator class that should be used and an icon. A possible file could look like this:

 

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<operators name="nameofyourextension" version="6.0" docbundle="com/rapidminer/extension/resources/i18n/OperatorsDocNameOfYourExtension">
    <group key="">
        <!-- This is an example how to specify Operators and Operator groups. The Operator groups define
                where Operators will be located in the Operator tree. -->
        
        <group key="sample_key">
           <operator>
              <key>name_of_the_key</key>
              <class>com.rapidminer.extension.nameofyourextension.MyClassName</class>
              <icon>cloud_data.png</icon>
           </operator>
         </group>
         
    </group>
</operators>

One option is, that you linked the class incorrectly. For the given example the class file MyClassName.class is located in a package named 'com.rapidminer.extension.nameofyourextension' in the src/main/java folder.

 

Best regards,

Philipp

Contributor II

Re: Operator not visible after installing extension

Hi,

 

I did as you said. But it is still not working. I am posting snapshots for your reference. 

 

Regards

Surabhi

 

 

Attachments

RMStaff

Re: Operator not visible after installing extension

Looks fine so far. 

 

Please check again, if you followed along all steps provided in the documentation, esp. steps 2 and 3. If it still fails, could you provide your build.gradle as well as your operator class, please?

 

Best regards,

Philipp

Contributor II

Re: Operator not visible after installing extension

Hi,

 

I am attaching archived project *demo*. Please reply soon.

 

Regards

Surabhi

Attachments

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RMStaff

Re: Operator not visible after installing extension

Please follow along the tutorial in the documentation I linked a post ago. You'll find step-by-step instructions, that will help you in creating your first operator covering the things I hinted before and in this post.

 

E.g., you need to uncomment the tags in the xml files (e.g. in OperatorsDemo.xml and OperatorsDocDemo.xml) and provide a java class file with your operator code. I couldn't find one in the files you provided. The class file is supposed to be in src/main/java in a package called com.rapidminer.extension.youroperatorname as e.g. YourClassName.java.

 

Best regards,

Philipp

Contributor II

Re: Operator not visible after installing extension

Hi,

The class file is in src/main/java in a package called com.rapidminer.extension.operator as e.g. myownoperator.java. Please check.

Thanks.

Contributor II

Re: Operator not visible after installing extension

Hi,

 

I got solution.

The problem was with tutorial documentation. In documentation, it is specified that package for operator should be named *com.rapidminer.extension.operator*. 

But the case is this should be named as com.rapidminer.extension.YourOperatorName.

And this *YourOperatorName* should be specified in OperatorsNAME.xml.

I am sharing screenshots from manual/documentaion. 

rm1.JPGrm2.JPG