Generate orangescape model json which can be used to create models in orangescape studio, from Excel File containing the field information

GenerateOrangeScapeModelJson.py

# GenerateJson.py
# generates the JSON to be used to create model using the Import Json Functionality
# requires xlrd library, which can be obtained from https://pypi.python.org/pypi/xlrd/0.9.2
# xlrd documentation => http://www.lexicon.net/sjmachin/xlrd.html
# Anbarasan <nasarabna@gmail.com>
# usage GenerateJson.py <path to Model params Excel file>
# In Excel : 
#   SheetName should be Model Name
#   first column should be fieldname 
#   second column should be field type

import json, sys, xlrd

class GenerateOrangeScapeModelJson:
    def __init__(self, excel):
        self.workbook = xlrd.open_workbook(excel)
        
    def getModels(self):
        return self.workbook.sheets() # get the sheets from the xl workbook
        
    def getModelParams(self, model):
        modelparams = {}
        for row in xrange(0, int(model.nrows)):
            paramattributes = {}
            paramname, paramtype = model.cell(row,0).value, model.cell(row,1).value
            
            if (len(paramname.strip()) > 0):
                if paramtype == 'Number':
                    paramattributes["Category"] = "Number"
                    paramattributes["Format"] = "###.##"
                elif paramtype == 'Date':
                    paramattributes["Category"] = "Date"
                    paramattributes["Format"] = "dd/mm/yyyy"
                else:
                    paramattributes["Category"] = "Text"
                    paramattributes["Format"] = "Text"
                
                modelparams[paramname] = paramattributes
        return modelparams
        
    def createJsonFile(self, modelname, modeljson):
        modeldefinition = file('out/' + modelname + '.json', 'w')
        modeldefinition.write(json.dumps(modeljson))
        modeldefinition.close()
        
    def convert(self):
        modelList = self.getModels()
        
        for model in modelList:
            modelname = model.name
            print "generating json for %s" % modelname
            modeljson = {}
            params = {}
            modeljson[modelname] = {"Layout":5}
            modeljson[modelname]["Fields"] = self.getModelParams(model)
            
            self.createJsonFile(modelname, modeljson)
        
models = GenerateOrangeScapeModelJson(sys.argv[1])
models.convert()