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DMDW - ETL-PROJECT
                              THE GROOVY-WAY
                           BY MAXIMILIAN BUTTERER




Samstag, 14. Mai 2011
WHAT WAS THE JOB


                    EXTRACT THE DATA FROM ROOM-PLAN-FILE (EXCEL)

                    TRANSFORM IT INTO NEW STRUCTURE (DATATYPES)

                    LOAD IT INTO NEW TARGET (E.G. DATABASE-SYSTEM)

                    CREATE KIND OF DOCUMENTATION (HOW-TO) OR

                    PRESENT IT TO YOU




Samstag, 14. Mai 2011
#1: EXPORT THE DATA



                    EXPORTING DATA FROM EXCEL IS PRETTY EASY

                    SO I EXPORTED HOLE FILE AS CSV-FILE

                    1ST PROBLEM: COMMA IS SEMICOLON

                    2ND PROBLEM: ENCODING IS NOT UTF-8




Samstag, 14. Mai 2011
#2: A                    HELPER


                    BECAUSE CSV IS PLAINTEXT IT‘S EASY TO PARSE

                    I CREATED A GROOVY-SCRIPT FOR CONVERTING

                    MY SOLUTION IS NOT THE CLEANEST WAY BUT SOME
                    KIND THE EASIEST

                    3RD PROBLEM: DATA IS NOT CONSISTENT / THERE ARE
                    CORRUPTED DATA-SETS




Samstag, 14. Mai 2011
#3: PUT IT INTO



                    HAVING ALL THE OBJECTS PARSED AND CONVERTED

                    JUST PUT ALL THE STUFF INTO THE DATABASE

                    4TH PROBLEM: HOW?




Samstag, 14. Mai 2011
HOW I SOLVED THE PROBLEMS


                    PARSING A FILE WITH GROOVY IS EASY AS 1,2,3



                    EACH LINE I HAD TO SPLIT UP BECAUSE OF THE
                    SEMICOLONS

                    TO CONVERT THE DATE-STRING INTO A REAL DATE WE
                    HAVE TO TRICK




Samstag, 14. Mai 2011
LET‘S HAVE A LOOK BEHIND



                    LOOK INTO THE CODE

                    HOW DOES THE CODE WORK

                    QUESTIONS




Samstag, 14. Mai 2011

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DMDW 8. Student Presentation - Groovy to MongoDB

  • 1. DMDW - ETL-PROJECT THE GROOVY-WAY BY MAXIMILIAN BUTTERER Samstag, 14. Mai 2011
  • 2. WHAT WAS THE JOB EXTRACT THE DATA FROM ROOM-PLAN-FILE (EXCEL) TRANSFORM IT INTO NEW STRUCTURE (DATATYPES) LOAD IT INTO NEW TARGET (E.G. DATABASE-SYSTEM) CREATE KIND OF DOCUMENTATION (HOW-TO) OR PRESENT IT TO YOU Samstag, 14. Mai 2011
  • 3. #1: EXPORT THE DATA EXPORTING DATA FROM EXCEL IS PRETTY EASY SO I EXPORTED HOLE FILE AS CSV-FILE 1ST PROBLEM: COMMA IS SEMICOLON 2ND PROBLEM: ENCODING IS NOT UTF-8 Samstag, 14. Mai 2011
  • 4. #2: A HELPER BECAUSE CSV IS PLAINTEXT IT‘S EASY TO PARSE I CREATED A GROOVY-SCRIPT FOR CONVERTING MY SOLUTION IS NOT THE CLEANEST WAY BUT SOME KIND THE EASIEST 3RD PROBLEM: DATA IS NOT CONSISTENT / THERE ARE CORRUPTED DATA-SETS Samstag, 14. Mai 2011
  • 5. #3: PUT IT INTO HAVING ALL THE OBJECTS PARSED AND CONVERTED JUST PUT ALL THE STUFF INTO THE DATABASE 4TH PROBLEM: HOW? Samstag, 14. Mai 2011
  • 6. HOW I SOLVED THE PROBLEMS PARSING A FILE WITH GROOVY IS EASY AS 1,2,3 EACH LINE I HAD TO SPLIT UP BECAUSE OF THE SEMICOLONS TO CONVERT THE DATE-STRING INTO A REAL DATE WE HAVE TO TRICK Samstag, 14. Mai 2011
  • 7. LET‘S HAVE A LOOK BEHIND LOOK INTO THE CODE HOW DOES THE CODE WORK QUESTIONS Samstag, 14. Mai 2011