rahulsh1 / datagenerator

Random Data generation based on SQL Schema

datagenerator

Random Data generation based on SQL Schema

Pre-requisites

• JDK 1.7/1.8
• Maven 3.x

Since one of the dependencies jsqlparser required for this project is not under maven repo, this has to be manually added to your local repository.

• Download jsqlparser-0.7.0.jar

• Extract it jar xvf jsqlparser-0.7.0.jar

• Deploy the jsqlparser.jar file to local repo. Assuming you extracted it under /tmp, run the following:

   mvn install:install-file
     -Dfile=/tmp/jsqlparser/lib/jsqlparser.jar
     -DgroupId=net.sf
     -DartifactId=jsqlparser
     -Dversion=0.7.0
     -Dpackaging=jar
     -DgeneratePom=true
  

Schema File

The Schema file is the crux of this entire generation. TODO

CREATE TABLE "APP_SESSION"
(	
"ID" NUMBER '##R',
"START_DATE" TIMESTAMP (0),
"END_DATE" TIMESTAMP (0),
"CONTEXT" VARCHAR2(255) 'Context\d{1,9}',
"PROCESSED" CHAR(1) 'Y',
"EVENT_URI" VARCHAR2(50) 'event\d{1,10}\@example\.com',
"EVENT_TYPE" CHAR(2) '(CR|ME)',
"EVENT_AT" TIMESTAMP (0)
);

CREATE TABLE "APP_SESSION_EVENT"
(	
"ID" NUMBER '##R',
"APP_ID" NUMBER '##R',
"URL" VARCHAR2(50) 'file:\/\/data[0-1]/\d{5,5}\.htm',
"CREATION_DATE" TIMESTAMP (0),
"DURATION" NUMBER '\d{3,5}',
"SOURCE_TYPE" CHAR(2) '(XY|CD|RS)',
"TYPE" VARCHAR2(20) '(E1|E2|E3|E4|E5)',
"TAGKEY" VARCHAR2(50) 'Tag([1-9]|1[0-9]|20)',
"TAGVALUE" VARCHAR2(2000) 'Value([1-9]|1[0-9]|20)'
);

Build

Download all sources and build with maven. Maven will download the correct dependencies.

$ git clone https://github.com/rahulsh1/datagenerator.git
$ cd datagenerator
$ mvn install

If you get this error, make sure the jsqlparser is deployed correctly in your local repo.

[ERROR] Failed to execute goal on project datagenerator: 
Could not resolve dependencies for project test:datagenerator:jar:1.0.0-SNAPSHOT: 
Could not find artifact net.sf:jsqlparser:jar:0.7.0 in central (http://repo.maven.apache.org/maven2) -> [Help 1]

Run

By default, the schema.sql is picked from the current directory. Also the records are generated under ./data. This can be changed in the pom.xml To generate 1000000 rows, pass -Dnumrows=1000000.

mvn install -Prun -Dnumrows=5

Generating Records for APP_SESSION Bulk:false
..
Records generated for APP_SESSION in /Users/oraclesdp/oracle/rndcode/poc/jdatagenerator/data/APP_SESSION.dat Records:5 - Time taken: 0.006 seconds.
Generating Records for APP_SESSION_EVENT Bulk:false
..
Records generated for APP_SESSION_EVENT in /Users/oraclesdp/oracle/rndcode/poc/jdatagenerator/data/APP_SESSION_EVENT.dat Records:5 - Time taken: 0.005 seconds.
Done

Bulk Mode

This is a special mode supported for Oracle DB which allows bulk insert operations. The generated file can be used in the following control file for sqlldr

$ cat app_session.ctl
  load data
  infile '/tmp/data/APP_SESSION.dat'
  into table APP_SESSION
  fields terminated by ","
  (ID, START_DATE, END_DATE, CONTEXT, PROCESSED, EVENT_URI, EVENT_TYPE, EVENT_AT)

$ sqlldr user/password control=/tmp/control/app_session.ctl

License

MIT