Enterprise Software

Enterprise software, also known as enterprise application software (EAS), is computer software used to satisfy the needs of an organization, including businesses, schools, interest-based user groups, clubs, charities, or governments. Services provided by enterprise software are typically business-oriented tools such as online shopping and online payment processing, interactive product catalogue, automated billing systems, security, enterprise content management, IT service management, customer relationship management (CRM), enterprise resource planning (ERP), business intelligence (BI), project management, human resource management (HR), manufacturing and supply chain management, enterprise application integration (EAI), and enterprise forms automation. Enterprise software is often available as a suite of customizable programs that require specialist capabilities.

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Immutable Class Builders
 
The other day I showed 1 way to make a Class #Builder more meaningful, #semantically, leveraging the #programming language's type system. Today, I'm going to address how to make them immutable, its benefits, and its drawbacks.
 
Why?
 
Class Builders typically use mutable architectures where the programming language allows. In #Java we often see the following model:
 
@Immutable  
final Class Person {  
 
public final Name name;  
public final Address address;  
 
Person(final Builder builder) {  
  this.name = builder.name:  
  this.address = builder.getAddress();  
}  
 
}  
   
@Mutable
final class Builder {  
 
public final Name name;
@Nullable private Address address;
 
private Builder(final Name name) {
  this.name = name:  
  this.address = Address.empty();  
}  
 
public static Builder named (final Name name) {  
  return new Builder(name);  
}  
 
public Builder with (@Nullable final Address address) {
  this.address = (null == address) ? Address.empty() : address;
}  
 
public Address getAddress () {
  return (null == this.address) ? Address.empty() : this.address;
}  
 
public Person build () {  
  return new Person(this);
}  
 
}  
 
Whatever Person field is required, we find in the Builder's constructor. In the above example, that's Name.
 
Other fields are optional, and their value is added to a Person instance by using one if the Builder.with() instance methods.
 
Note how the Builder also features a …
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Author Comment

by:A.E. Veltstra
Thank you, Brian! I'll look into that.
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Author Comment

by:A.E. Veltstra
Anton Shipilev showed in 2014 that using all final fields and setting them in the class constructor did in fact slow down initialization when using Oracle's HotSpot Java compiler on ARM and PowerPC. I have yet to see whether his recommendations have been committed. https://shipilev.net/blog/2014/all-fields-are-final/
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Enterprise Software

Enterprise software, also known as enterprise application software (EAS), is computer software used to satisfy the needs of an organization, including businesses, schools, interest-based user groups, clubs, charities, or governments. Services provided by enterprise software are typically business-oriented tools such as online shopping and online payment processing, interactive product catalogue, automated billing systems, security, enterprise content management, IT service management, customer relationship management (CRM), enterprise resource planning (ERP), business intelligence (BI), project management, human resource management (HR), manufacturing and supply chain management, enterprise application integration (EAI), and enterprise forms automation. Enterprise software is often available as a suite of customizable programs that require specialist capabilities.