Knime Batch Command can't work well

KNIME Analytics Platform
1

Hello, My NickName is doryokujin. I'm sorry for my poor English.

I read FAQ "Is there any way to run KNIME in batch mode, i.e. only on command line and without the graphical user interface?"

 And I make a simple KNIME_project only containing 2 nodes, csv reader(ID=1) and csv writer(ID=2) to execute batch command. Output csvfile path is decided from program(within node.xml), but input csvfile is decided from command line option. Here is the my executed command:

<pre>
doryokujin@doryokujin:~/knime$ ./knime -nosplash    \
-application org.knime.product.KNIME_BATCH_APPLICATION   \
-workflowDir="/home/doryokujin/knime/workspace/KNIME_project"   \
-option=1,url,"/home/doryokujin/knime/IrisDataset/data.trn",String
</pre>
but a got error massage like this:
<pre>
ERROR CSV Reader Loading model settings failed: Invalid URL: no protocol: hoge
ERROR main CSV Reader Loading model settings failed: Invalid URL: no protocol: hoge
WARN CSV Reader No settings available
org.knime.core.node.InvalidSettingsException: Invalid URL: no protocol: /home/doryokujin/knime/IrisDataset/data.trn
at org.knime.base.node.io.csvreader.CSVReaderConfig.loadSettingsInModel(CSVReaderConfig.java:110)
at org.knime.base.node.io.csvreader.CSVReaderNodeModel.validateSettings(CSVReaderNodeModel.java:158)
....
</pre>
How can I solve this "no protocol" problem? If input file path are decided in program(within node.xml), this batch command work properly.

Please teach me how to solve this problem.

Thank you.

2

You need to specifiy the protocol for the file URL which is "file:", thus the correct parameter is "file:/home/doryokujin/knime/IrisDataset/data.trn". The CSV Reader can also read from HTTP pages, then you have to specify "http:".

3

Thank you for your answer.

I could solve the problem to specify the protocol such as:

-option=1,url,"file:/home/doryokujin/knime/IrisDataset/data.trn",String