[jira] [Commented] (METRON-1382) Run Stellar in a Zeppelin Notebook

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/METRON-1382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16310074#comment-16310074 ] 

ASF GitHub Bot commented on METRON-1382:
----------------------------------------

Github user nickwallen commented on a diff in the pull request:

    https://github.com/apache/metron/pull/884#discussion_r159498766
  
    --- Diff: metron-stellar/stellar-common/src/main/java/org/apache/metron/stellar/common/shell/specials/DocCommand.java ---
    @@ -0,0 +1,105 @@
    +/*
    + *  Licensed to the Apache Software Foundation (ASF) under one
    + *  or more contributor license agreements.  See the NOTICE file
    + *  distributed with this work for additional information
    + *  regarding copyright ownership.  The ASF licenses this file
    + *  to you under the Apache License, Version 2.0 (the
    + *  "License"); you may not use this file except in compliance
    + *  with the License.  You may obtain a copy of the License at
    + *
    + *      http://www.apache.org/licenses/LICENSE-2.0
    + *
    + *  Unless required by applicable law or agreed to in writing, software
    + *  distributed under the License is distributed on an "AS IS" BASIS,
    + *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + *  See the License for the specific language governing permissions and
    + *  limitations under the License.
    + *
    + */
    +package org.apache.metron.stellar.common.shell.specials;
    +
    +import org.apache.commons.lang3.StringUtils;
    +import org.apache.metron.stellar.common.shell.StellarShellExecutor;
    +import org.apache.metron.stellar.common.shell.StellarResult;
    +import org.apache.metron.stellar.dsl.StellarFunctionInfo;
    +
    +import java.util.Optional;
    +import java.util.Spliterator;
    +import java.util.function.Function;
    +import java.util.stream.StreamSupport;
    +
    +import static org.apache.metron.stellar.common.shell.StellarResult.error;
    +import static org.apache.metron.stellar.common.shell.StellarResult.success;
    +
    +/**
    + * A special command that allows a user to request doc string
    + * about a Stellar function.
    + *
    + * For example `?TO_STRING` will output the docs for the function `TO_STRING`
    + */
    +public class DocCommand implements SpecialCommand {
    --- End diff --
    
    Doc strings are not part of the core language.


> Run Stellar in a Zeppelin Notebook
> ----------------------------------
>
>                 Key: METRON-1382
>                 URL: https://issues.apache.org/jira/browse/METRON-1382
>             Project: Metron
>          Issue Type: Improvement
>            Reporter: Nick Allen
>            Assignee: Nick Allen
>
> Create a Zeppelin interpreter that allows Stellar to run in a Zeppelin Notebook, the same way that it runs in the command-line driven REPL.
> This should include all of the Stellar "enhancements" available in the REPL that are not part of the core Stellar language including the following.
> * Variable assignment 
> * Magics
> * Docstrings
> * Comments
> * quit



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