Switch it up with Apex - TrailheadX 2018

https://developer.salesforce.com/trailheadx/sessions?q=a2q3A000001pyRtQAI#march-28

Recording: https://www.youtube.com/watch?v=cusUVO9IQjc

Transcript

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2. Switch it up with Apex
   March 28, 2018
   

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3. Statement under the Private Securities Litigation Reform Act of 1995:
   This presentation may contain forward-looking statements that involve risks, uncertainties, and assumptions. If any such uncertainties materialize or if any
   of the assumptions proves incorrect, the results of salesforce.com, inc. could differ materially from the results expressed or implied by the forward-looking
   statements we make. All statements other than statements of historical fact could be deemed forward-looking, including any projections of product or
   service availability, subscriber growth, earnings, revenues, or other financial items and any statements regarding strategies or plans of management for
   future operations, statements of belief, any statements concerning new, planned, or upgraded services or technology developments and customer
   contracts or use of our services.
   The risks and uncertainties referred to above include – but are not limited to – risks associated with developing and delivering new functionality for our
   service, new products and services, our new business model, our past operating losses, possible fluctuations in our operating results and rate of growth,
   interruptions or delays in our Web hosting, breach of our security measures, the outcome of any litigation, risks associated with completed and any
   possible mergers and acquisitions, the immature market in which we operate, our relatively limited operating history, our ability to expand, retain, and
   motivate our employees and manage our growth, new releases of our service and successful customer deployment, our limited history reselling
   non-salesforce.com products, and utilization and selling to larger enterprise customers. Further information on potential factors that could affect the
   financial results of salesforce.com, inc. is included in our annual report on Form 10-K for the most recent fiscal year and in our quarterly report on Form
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   Any unreleased services or features referenced in this or other presentations, press releases or public statements are not currently available and may not
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   Forward-Looking Statement
   

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4. Chris Peterson
   Senior Product Manager
   @ca_peterson
   Principal Engineer
   Jim Spagnola
   Senior Engineer
   @anand13s
   Anand Subramanian
   Insert
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   photo
   here
   

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5. Did you know Apex has a new compiler?
   You shouldn’t
   

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6. Switch
   

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7. Why we picked Switch
   ● 17,000 Idea Exchange Points
   ● Simplifies long if/else logic chains
   ● Improve trigger flow with help of context enum
   ● Most popular languages have some form of switching/pattern
   matching
   ● Show off the new compiler
   

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8. Values and Obstacles
   ● Values
   ○ Reduce code duplication
   ○ Support Enums, String, Integer, Long
   ○ Handle fields over polymorphic SObject types
   ○ Familiar to developers from all background
   ○ Leave the opportunity to expand Switch
   ● Obstacles
   ○ Case isn’t a keyword in Apex
   ○ Why isn't it exactly like Java? No, I mean exactly.
   

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9. switch on i {
   when 2, 3, 4 {
   System.debug('case 2 and 3 and 4');
   }
   when 5, 6 {
   System.debug('case 5 and 6');
   }
   when 7 {
   System.debug('case 7');
   }
   when else {
   System.debug('default');
   }
   }
   Behold Switch
   

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10. Trailblazer Forum
    ● “Hey that’s not Java.”
    ● “I like it.”
    ● “I don’t like it.”
    

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11. Trailblazer Community
    ● Code Coverage Requirements
    ● case if -> when
    ● Clarity { }
    ● Trigger Enum
    

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12. Thank you
    

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13. DEMO
    UP NEXT
    Switch
    

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14. switch on i {
    when 2, 3, 4 {
    System.debug('case 2 and 3 and 4');
    }
    when 5, 6 {
    System.debug('case 5 and 6');
    }
    when 7, 2 { // not allowed
    System.debug('case 7');
    }
    when else {
    System.debug('default');
    }
    }
    Switch Syntax
    

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15. • List contains() /
    indexOf()
    1,190
    points
    Spring
    • Switch 17,000
    points
    Summer
    • Count SOQL
    count() as a
    single row query
    6,800
    points
    Summer
    • Get
    RecordTypeInfo
    by API name
    4,900
    points
    Summer
    True to the Core
    

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16. Roadmap
    What else is coming, and what we're thinking about
    

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17. Performance
    

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18. Performance Improvements!
    ● Faster apex test runs as part of metadata deployments
    ○ Especially if you use declarative customization tooling - like Flow
    ● Up to 20% faster test runs by skipping code coverage collection
    ● Compile on deploy
    ○ Avoid "cold cache" of Apex bytecode after deployments or package install
    ○ Enabled in production orgs
    ○ Optional for others (scratch orgs, sandboxes, etc)
    

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19. Secure development
    

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20. Secure development
    Inspired by community-developed security-enforcing query builders
    fflib_QueryFactory qf = new fflib_QueryFactory(Contact.SObjectType)
    .assertIsAccessible() //CRUD check on Contact
    //for fields shown to a user - we need to check FLS
    .setEnforceFLS(true)
    .selectField('Description') //FLS checked
    //disable FLS enforcement - we're going to use this for internal system purposes
    .setEnforceFLS(false)
    .selectField('Value__c');
    List results = Database.query(qf.toSOQL());
    From: FinancialForce fflib-apex-common. On github at https://github.com/financialforcedev/fflib-apex-common
    

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