Commandline Parameters

Commandline parameters for DiffSearch

Introduction

To simplify the execution, use the command

dfs() { mvn exec:java -Dexec.mainClass=research.diffsearch.mainpp -Dexec.args="$1" ; }

Then, DiffSearch can be run using

dfs "_args_"

DiffSearch Modes

Parameter	Usage	Description
n	-n	DiffSearch in console mode
g	-g	DiffSearch serves as webserver for the DiffSearch UI
w	-w	DiffSearch serves as webserver for the old DiffSearch UI
q	-q query	performs a search on the given query
b	-b inputpath outputpath	processes all queries of a text file at the given path and saves the result in the given output file
fe	-fe	Feature extraction mode, creates feature vectors from code changes and indexes them

Other parameters

Parameter	Usage	Description
pyc	-pyc pycommand	sets the command to start the python environment
lang	-lang (java|javascript|python)	sets the target programming language
l	-l	saves the server log to a log file.
oj	-oj	runs only the java server and does not invoke python
p	-p port	sets the port of the web interface
r	-r	enables recall measurement
silent	--silent	if given, DiffSearch omits large console outputs like results of a query
py_port	-py_port port	sets the port of the python server
k	-k number	sets value for k, which is the number of candidate changes
r	-t number	enables recall measurement
vl	-vl number	size a each partition of the feature vectors
cb	-cb number	number of count bits
t	-t number	number of threads to use
extractors	-extractors (name(:length)?;)+	defines the extractors DiffSearch uses, e.g. -extractors parentchild:2000;triangle:2000
mt	-mt seconds	maximum matching time for a single code change
extract-query-placeholders	--extract-query-placeholders	extract query placeholders like EXPR, default is false
tfidf	-tfidf	tfidf weights are used in the feature vectors
noquerymultiplication	-noquerymultiplication	query vectors do not get multiplied
nondividedextraction	-nondividedextraction	feature extraction is not divided in the old and new part