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Reading and writing records and lists

Description
This set of examples shows how to work with advanced data structures when accessing data in spreadsheets and databases:
  • reading in records (recordin*.mos)
  • writing out records (recordout*.mos)
  • reading and writing lists (listinout*.mos)
The basic model version uses an ODBC connection to spreadsheets or databases through the odbc driver, model version (2) uses ODBC through SQL statements, and model version (3) uses the software-specific driver excel to access Excel spreadsheets. Model version (1) shows how to work with Mosel's text data file format.

Further explanation of this example: Xpress Whitepaper 'Using ODBC and other database interfaces with Mosel', Section Examples - Working with lists - Working with records.

listrecord.zip[download all files]

Source Files

Data Files
recorddata.dat[download]
recorddata.csv[download]
recorddata2.csv[download]
recorddata.mdb[download]
recorddata.xls[download]
recorddata2.xls[download]
recordout_templ.xls[download]
recorddata.xlsx[download]
recorddata2.xlsx[download]
recorddata.sqlite[download]
listdata.dat[download]
listdata.csv[download]
listdata.mdb[download]
listdata.xls[download]
listdata.xlsx[download]
listdata.sqlite[download]





recordout1.mos

(!******************************************************
   Mosel Example Problems
   ====================== 

   file recordout1.mos
   ```````````````````
   Writing out records to a text file.
   
   (c) 2008 Fair Isaac Corporation
       author: S. Heipcke, Nov. 2007, rev. Jul. 2010
*******************************************************!)

model "Record output (Text file)"

 declarations
  PRODUCTS: set of string
  MACH: range
  ProdRec = record
   Cost: real
   Duration: integer
  end-record 
  PDATA: dynamic array(PRODUCTS,MACH) of ProdRec

  R = 1..9
  AllDataRec = record
   Product: string
   Mach: integer
   Cost: real
   Duration: integer
  end-record 
  ALLDATA: array(R) of AllDataRec
 end-declarations

! **** Reading data from a text file
 initializations from "recorddata.dat"
  PDATA as "ProdData"
  ALLDATA as "AllData"
 end-initializations

! **** Write out complete records

 initializations to "recordout.dat"
  PDATA as "ProdDataOutH"
  ALLDATA as "AllDataOutH"
 end-initializations

! **** Write out record fields

 initializations to "recordout.dat"
  PDATA(Cost) as "CostOutH"
  ALLDATA(Product,Mach,Duration) as "DurationOutH"
 end-initializations

end-model

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