mirror of https://github.com/apache/zeppelin synced 2026-05-24 09:38:26 +00:00

History

cuspymd 919f030a8a [ZEPPELIN-5370] Polish pom.xml files ### What is this PR for? Polish pom.xml files - Delete unnecessary tags - Delete duplicated dependencies ### What type of PR is it? [Refactoring] ### What is the Jira issue? * https://issues.apache.org/jira/browse/ZEPPELIN-5370 ### How should this be tested? * CI ### Questions: * Does the licenses files need update? No * Is there breaking changes for older versions? No * Does this needs documentation? No Author: cuspymd <cuspymd@gmail.com> Closes #4118 from cuspymd/polish-poms and squashes the following commits: `766278338` [cuspymd] Fix integration test error `385fcf2fd` [cuspymd] Delete duplicated version of sub-modules `ba127bf16` [cuspymd] Recover duplicated dependencies related to spark interpreter `6fa7e1d51` [cuspymd] Polish pom.xml		2021-07-07 14:59:21 +02:00
..
src	[ZEPPELIN-5044] Refactoring some viewed classes	2020-09-17 08:57:00 +02:00
pom.xml	[ZEPPELIN-5370] Polish pom.xml files	2021-07-07 14:59:21 +02:00
README.md	[ZEPPELIN-3653] - New Java interpreter	2018-08-03 09:15:19 +08:00

Overview

Java interpreter for Apache Zeppelin

Architecture

Current interpreter implementation supports the static REPL. It compiles the code in memory, execute it and redirect the output to Zeppelin.

Upon starting an interpreter, an instance of JavaCompiler is created.
When the user runs commands with java, the JavaParser go through the code to get a class that contains the main method.
Then it replaces the class name with random class name to avoid overriding while compilation. It creates new out & err stream to get the data in new stream instead of the console, to redirect output to Zeppelin.
If there is any error during compilation, it can catch and redirect to Zeppelin.
JavaInterpreterUtils contains useful methods to print out Java collections and leverage Zeppelin's built in visualization.