SciDB-lua

Use SciDB from Lua

Tutorial on calling C functions from Lua Here
Tutorial on libcurl Here

PRE-REQUISITES

• Lua & lua development libraries sudo apt-get install lua5.2 liblua5.2-dev
• A symbolic link at /usr/include/lua pointing pointing to /usr/include/lua5.x. For example: ln -s /usr/include/lua5.2 /usr/include/lua
• The file /usr/include/curl/types.h must be present. Otherwise, create it with the following content: /* not used */
• A SciDB database running the shim web service.

COMPILE

gcc -Wall -shared -fPIC -o shimclient.so -I/usr/include/lua shimc.c -lcurl -I.

USE

• Create a text file called conf.exe. This text file must contain 4 lines:
  • URL of the public shim interface
  • URL of the dic shim interface
  • Username
  • Password
  Such a file would look like this
  http://mySciDB:8080
https://mySciDB:8083
scidb
mySecretPassword
  
• Make sure the following arrays do not exist on the datatbase:
• iquery -aq "remove(winners)"
• iquery -aq "remove(winnersFlat)"
• iquery -aq "remove(event_index)"
• Run the following command to execute the tests: lua shimc.lua