אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 1 פרק 13 Case Study: Weather Station.

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Presentation transcript:

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 1 פרק 13 Case Study: Weather Station

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 2 Weather Monitoring Station: Case Study This is a preliminary chapter of Object Oriented Analysis and Design with Applications, 2d. ed., Grady Booch, Robert C, Martin, James Newkirk. Copyright © 1998, by Addison Wesley Longman, Inc. No portion of this document may be repro- duced without the written permission of Addison Wesley Longman, Inc.

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 3 Requirements … Nimbus-LC Requirements Usage Requirements This system shall provide automatic monitoring of various weather conditions. Specifically, it must measure: Wind speed and direction Temperature Barometric pressure Relative Humidity Wind chill Dew point temperature The system shall also provide an indication of the current trend in the barometric pressure reading. The three possible values include stable, rising, and falling. For example, the current barometric pressure is inches of mercury (IOM) and falling. The system shall have a display which continuously indicates all measurements, as well as the current time and date.

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 4 Initial Sensor Model

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 5 Making Periodic Measurements

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 6 Making Periodic Measurements(2)

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 7 Decoupling the User Interface and the Scheduler: Observer Pattern

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 8 Observer Pattern:OMD

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 9 Observer Pattern: Sequence Diagram

אביב תשס " ה JCT תיכון תוכנה ד " ר ר ' גלנט / י ' לויאןכל הזכויות שמורות 10 Okay, now let ’ s decouple scheduler from the sensors: AlarmClock-AlarmListener Pattern