Meeting notes

• Null Object
• Briciul lui Occam
• Principles
  • DRY Principle
  • KISS Principle
  • Single Responsibility Principle
• Patterns
  • Builder Pattern
  • Singleton Pattern vs Global State
• Netiquette
  • Flamewars
• Code review
  • Static fields & Immutability & Global State
  • Final fields
• Huge Coding Improvements (the Big Lessons)
  • Basic -> C/C++/Pascal (code & parameters reuse, procedural control structures)
  • C++ -> STL (standard library usage, reuse through libraries)
  • C++ -> Java (automatic memory management & no pointer arithmetic & OS independence)
  • Java -> Spring Framework (adding Dependency Injection)
  • Java -> Scala (get rid of loops and exceptions)
    • functional immutable collections (www.vavr.io, old javaslang.io)
    • lambda expressions (Java8)
    • types for: exceptions, options(java's Optional)
• Small Lessons
  • use the proper tool
  • discard getters - method getInteger vs field integer breaks Liskov Substitution Principle
  • discard setters - immutable data
  • use public final fields
• Techniques
  • TDD's Pair Programming
• Merging problems
  • formatting: whitespace, end of lines, tabs, encoding
  • respect location conventions
  • two/three way compare
  • git merge with conflicts: ours, theirs, mixed file
  • copy in other files
  • with totalcmd sync dirs
    • recursive
    • ignoring folders: *.*|.git\ target\
    • by content, ignore date
• Refactorings
  • extract method
  • rename class/method
  • extract interface
• TDD
  • create code via quick fix (eclipse : ctrl+1)

Activities

• merging branches with conflicts
• standard format
  • End Of Lines
  • Encoding - UTF8
  • Why use spaces against tabs
• Respect TDD Mantra
• merge with totalcommander
• allow multiple implementations
• install ForgeRock OpenIDM from
  • https://backstage.forgerock.com/downloads/OpenIDM/Identity%20Management/5.0.0/IDM%20Zip#list
  • download after registration - https://www.forgerock.com/downloads/download-openidm-trial-downloading/
  • how to install - https://backstage.forgerock.com/docs/idm/5/install-guide
  • start local ForgeRock server

    cd openidm
    startup.bat
    

• connect to ForgeRock OpenIDM
  • private network instance at http://dcs-xps:8080 with default user: openidm-admin default pass: openidm-admin
    • manually
    • programatically - http://dcs-xps:8080/admin/#apiExplorer
  • local instance at http://localhost:8080
    • manually
    • programatically - http://localhost:8080/admin/#apiExplorer
  • secure local instance at https://localhost:8443
    • manually
    • programatically - https://localhost:8443/admin/#apiExplorer
• use curl to list all the users
  • windows

  curl -X GET ^
   --header 'Accept: application/json' ^
   --header 'X-Requested-With: Swagger-UI' ^
   --header "X-OpenIDM-Username: openidm-admin" ^
   --header "X-OpenIDM-Password: openidm-admin" ^
   "http://dcs-xps:8080/openidm/managed/user?_prettyPrint=true&_queryId=query-all"
  

  • linux/OSX

  curl -X GET \
  --header 'Accept: application/json' \
  --header 'X-Requested-With: Swagger-UI' \
  --header "X-OpenIDM-Username: openidm-admin" \
  --header "X-OpenIDM-Password: openidm-admin" \
  "http://dcs-xps:8080/openidm/managed/user?_prettyPrint=true&_queryId=query-all"
  

• create user
  • linux/OSX

  curl -X PUT \
  --header 'Content-Type: application/json' \
  --header 'Accept: application/json' \
  --header 'If-None-Match: *' \
  --header 'X-Requested-With: Swagger-UI' \
  --header "X-OpenIDM-Username: openidm-admin" \
  --header "X-OpenIDM-Password: openidm-admin" \
  -d '{
    "_id": "3242", 
    "mail": "[email protected]", 
    "userName": "PUTstefan", 
    "sn": "sn3242", 
    "givenName": "PUTstefan2name" 
  }' 'http://10.3.67.68:8080/openidm/managed/user/105'
  

  • windows

  curl -X PUT ^
  --header 'Content-Type: application/json' ^
  --header 'Accept: application/json' ^
  --header 'If-None-Match: *' ^
  --header "X-OpenIDM-Username: openidm-admin" ^
  --header "X-OpenIDM-Password: openidm-admin" ^
  --header 'X-Requested-With: Swagger-UI' ^
  -d '{ ^
    "_id": "204", ^
    "mail": "[email protected]", ^
    "userName": "costin4", ^
    "sn": "sn204", ^
    "givenName": "costin4name" ^
  }' ^
  'http://dcs-xps:8080/openidm/managed/user/204'