Update: Since RapidMiner is no longer open-source; extend another framework (am still in search for a good one); (more info).

 

Extending RapidMiner (RM) involves two steps:

1. Setup RM Project
2. Setup (YOUR) Extension/Operator

Kind folks at RM have provided several guides; but they are somewhat outdated (plus there are some platform specific issues).  Bellow, I provide notes (and ziped templates) on what has worked for me.

1. Setup RM Project

The following post provide the instructions how to set up eclipse svn and rapidminer.

Things do work under Ubuntu 12.04; but seem no longer working under OSX for rapidminer 5.3 (revision 829).

Problem

In OSX; am getting 28 errors:

attributeList cannot be resolved

which is caused by:

private final JList<ColumnIdentifier> attributeList = new JList<ColumnIdentifier>(new DefaultListModel<ColumnIdentifier>());

with the following explanations:

Multiple markers at this line
	- The type JList is not generic; it cannot be parameterized with arguments <ColumnIdentifier>
	- The type DefaultListModel is not generic; it cannot be parameterized with arguments 
	 <ColumnIdentifier>
	- The type JList is not generic; it cannot be parameterized with arguments <ColumnIdentifier>

Solution

The problem seem to due to the OSX version of Java.  The following steps allow to overcome it.

• Install JDK 7
  http://jdk7.java.net/download.html
  make sure to install JDK and not just JRE
• Configure Eclipse to use JDK 7
• follow instructions in the post with the following modifications: 
  when installing subclipse use the most recent version e.g. 1.8; not 1.6
  configure eclipse to use SVNKit: Team/SVN/SVN Interface/SVNKit
  check out unuk (not vega)
• Set compiler compliance level to 1.6

If everything compiles you may want to skip to “Building Extension” section.

Other Issues

Problem

Trying to compile RapidMiner gives the following error:

 rapidminer constructor is ambigious

Solution

Instructions are somewhat outdated (screenshots to be precise).  So I have mistakenly installed the Vega version.  The Unuk version/branch should be selected (https://rapidminer.svn.sourceforge.net/svnroot/rapidminer/Unuk).

You may get the message bellow; but just ignore it, and everything should work fine.

Resource '/.org.eclipse.jdt.core.external.folders' already exists.

 

Building RapidMiner

To build the rapidminer.jar; right click on the build.xml in eclipse Run As/”Ant Build …” and select createJar target.

2. Setup (YOUR) Extension/Operator

The official guide on extending RM (zip file contains a very nice manual; and Extension Template and Tutorial Extension).  Although it is a little bit outdated (aimed at Vega; not Unuk).  Here is my modified template that should work with Unuk as is (see paragraph bellow on how to set it up though).

While it should be possible to just create a project for your extension  this did not work well for me.  Instead use the workspace that you have created in the previous step (setting up RM project).  Then you can import the project into it (my modified template); by “Import / Existing Project into Workspace” make sure to check “copy files” (needed since build.xml locates RM by ../); later on you move proj to the desired location for source control, etc.; and created a symbolic link to it.

To build your extension; right click on build.xml and select “Run As / Ant Build …”and select “instal” target.

Then execute the RM Project.  You should be able to see your extension in RM with  “View/Show View/A very simple Window”

When writing your extension make sure to look at a very nice official guide on extending RM.

Previous Issues

Left for reference purposes (or in case I need to re-update the source files).

—

Currently template references old version of RM (Vega); change the project properties to reference to Unuk; and edit the top of the build.xml file accordingly.

The panel (SimpleWindow) will not show up as shown in tutorial pdf; to get it to show — View/Show View/A

Things should now work.  For more details see pdf manual included in the official guide.

—

import proj into eclipse (copy into workspace)
Import / Existing Project into Workspace

(make sure to check the “copy project into workspace” option; needed for compilation and finding RM source)

replace: Vega by Unuk in build.xml

In project properties update the Java Build Path to point to RamidMiner_Unuk Project (must be in your workspace)

right click on build.xml and select Run As / Ant Build …
and select “instal” target

Added SimpleWindow (@see Sec. 8.3 in “How to Extend RapidMiner 5.pdf”)
to have it shown uncomment the line in PluginInitTemplate

added vldocking.jar (as per instructions in Sec. 8.3)

—

Create a new eclipse project and import RapidMiner_Extension_Template project into it (make sure to check “Copy projects into workspace”).

Modify the Eclipse project properties: right click on the project and select Properties/Project References, and select the Unuk proj and click on. Then go to Properties/Java Build Path/Projects click on Add and select Unuk proj and remove Vega proj.  An alternative is to add the rapidminer.jar instead of the whole project.

build.xml refers to Vega,  you need to modify change the references from Vega to Unuk in build.xml:

<property name=”rm.dir” location=”../RapidMiner_Vega” />

->

<property name=”rm.dir” location=”../PATH_TO_RapidMiner_UNUK” />

(and execute build; see above; and refresh the project); and also to

If it could not be located (due to incorrect path) you get the following error:

[taskdef] Could not load definitions from resource net/sf/antcontrib/antlib.xml. It could not be found.

If you run build.xml with the “install” target.  You may get the following error (actually it will run fine only for the first time):

build.dependencies:
     [echo] Building plugin dependencies of Tutorial Extension...

build_extension.xml:142: The following error occurred while executing this line:
build_extension.xml:194: The following error occurred while executing this line:
build_extension.xml:199: The following error occurred while executing this line:

.metadata/.lock:1: Premature end of file.

It could be fixed (hacked) by commenting out the following line in build.xml:

	<fileset id="build.dependentExtensions" dir="..">
	</fileset>

 

You may want to also copy the RM/ant dir to get rid of the following warning:

version.get:
     [echo] Long version: 5.0.000; short version: 5.0
init.setEncoding:
init:
  [taskdef] Could not load definitions from resource antlib.xml. It could not be found.
  [taskdef] Could not load definitions from resource org/freecompany/redline/ant/antlib.xml. It could not be found.
     [copy] Warning: Could not find file RapidMiner_Extension_Tutorial/ant/jsch-0.1.42.jar to copy.
init.setEncoding:

 

Keywords & trails

Eclipse Juno 4.2

rapidminer rm svn eclipse extending extension build does not compile ambiguous

r eclipse required projects on the build path does not

8:01pm

Eclipse missing already imported required… – stackoverflow.com

8:01pm

Searched for eclipse required projects on the build path

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java – Required project in build path… – stackoverflow.com

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Searched for eclipse project not visible in workspace

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Eclipse Projects not showing up after… – stackoverflow.com

 

Searched for eclipse java.lang.UnsatisfiedLinkError: Could not load SWT library

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Searched for unuk rapidminer

8:09pm

 

 

 

Rapid – I – Subversion – rapid-i.com – Viewed 2 times

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Searched for unuk 452

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Searched for unuk 453

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public aborg0 / RapidMiner-Unuk – GitHub – github.com

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Searched for rapidminer The type JList is not generic; it cannot be parameterized with arguments <ColumnIdentifier>

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Searched for rapidminer attributelist cannot be resolved

 

Searched for build.xml:360: java.lang.UnsupportedClassVersionError: com/oracle/appbundler/AppBundlerTask : Unsupported major.minor version 51.0

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Searched for Failed to load JavaHL Library. These are the errors that were encountered: no libsvnjavahl-1 in java.library.path no svnjavahl-1 in java.library.path no svnjavahl in java.library.path java.library.path = .:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java

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eclipse – Failed to load JavaHL Library… – stackoverflow.com

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eclipse – JavaHL isn’t working – Stack Overflow – stackoverflow.com

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Searched for subclipse

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Subclipse – Tigris.org – tigris.org

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subclipse: Subclipse Update Site – tigris.org

 

 

Searched for rapidminer-vega unuk

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Extending RapidMiner | Active Intelligence – activeintelligence.org

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Cannot run RapidMiner in Eclipse –

 

Could not load definitions from resource net/sf/antcontrib/antlib.xml. It could not be found

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ant – Could not load definitions from… – stackoverflow.com

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Extending RapidMiner | Active Intelligence – activeintelligence.org – Viewed 2 times

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Searched for Problem: failed to create task or type antlib:net.sf.antcontrib:for Cause: The name is undefined.

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ant: failed to create task or type -.