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https://issues.apache.org/jira/browse/BEANUTILS-335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Fabulich updated BEANUTILS-335:
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Attachment: AbstractFluidBean.java
> Provide support for "fluid" beans
> ---------------------------------
>
> Key: BEANUTILS-335
> URL: https://issues.apache.org/jira/browse/BEANUTILS-335
> Project: Commons BeanUtils
> Issue Type: New Feature
> Components: Bean / Property Utils
> Reporter: Dan Fabulich
> Attachments: AbstractFluidBean.java
>
>
> The attached patch allows users to easily define what I'm calling a "fluid"
> bean (though there might be a better name for it).
> The idea here is to write a bean that doesn't follow the standard JavaBean
> convention. Specifically, a "fluid" bean's setters return "this," so you can
> "chain" calls to the setters, and the getters and setters don't start with
> "get/set" but are just the name of the property. For example:
> {code}public class Employee extends AbstractFluidBean {
> private String firstName, lastName;
> public String firstName() { return firstName; }
> public Employee firstName(String firstName) {
> this.firstName = firstName;
> return this;
> }
> public String lastName() { return lastName; }
> public Employee lastName(String lastName) {
> this.lastName = lastName;
> return this;
> }
> }{code}
> Fluid beans have some limitations: you can't use indexed or mapped properties
> with a fluid bean (because there's no way to disambiguate an indexed getter
> from a simple setter). I think that's OK because indexed properties are a
> bit silly. (Why not just return a List or a Map?)
> But I think they have substantial readability advantages. With a fluid bean,
> you can write code like this:
> {code}
> HumanResources.hire(new Employee().firstName("Dan").lastName("Fabulich"));
> {code}
> For an example of fluid chained setters in the wild, see (for example)
> Effective Java Second Edition by Joshua Bloch. In Item 2 "Consider a builder
> when faced with many constructor parameters" Bloch defines a fluid bean with
> chained setters, so you can use it like this:
> {code}
> NutritionFacts cocoCola = new NutritionFacts.Builder(240, 8)
> .calories(100).sodium(35).carbohydrate(27).build();
> {code}
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