Builder-Pattern | PHP Implementation of event driven Builder Pattern | Blog library
kandi X-RAY | Builder-Pattern Summary
kandi X-RAY | Builder-Pattern Summary
PHP Implementation of event driven Builder Pattern
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Top functions reviewed by kandi - BETA
- Encode an object .
- Convert an array to DOM .
- Buy an item .
- Set the collection .
- Build the dataObject .
- Set the modifier
- Execute the modify action
- Set event manager
- Add a modification .
- Pre build event handler
Builder-Pattern Key Features
Builder-Pattern Examples and Code Snippets
Community Discussions
Trending Discussions on Builder-Pattern
QUESTION
I'm new to coding in kotlin and want to implement an immutable class that represents a project with various fields inside.
The easiest way to do this is by using a data class and using the copy() method so that anytime one of the app user modifies a field it results in the backend in a call to the copy method with the modified field producing the new project.
My problem is that this way does not allow for prior checking of parameters (eg : limit string size of the owner, making sure the number of people added to the project is reasonable etc). If this was java, I'd use a builder pattern but this seems to defeat the purpose of kotlin, and i've read articles that are positive to using builders in kotlin (https://www.baeldung.com/kotlin/builder-pattern) and others that are completely against (https://code-held.com/2021/01/23/dont-use-builder-in-kotlin/).
I haven't found any way to "modify" the copy method and to add the parameter sanitization checks that are needed for each parameter. I would appreciate any "smooth" idea to implement this, if anybody has found it. The goal would also be to throw exeptions/sealed classes variables so that the app UI can tell the user what went wrong instead of a generic error message just mentioning that the project was not modified.
...ANSWER
Answered 2021-Mar-14 at 02:45I agree with the second link. If you look at the comments on the Baeldung article, you'll see even they were convinced and pledged to revise the article.
You can throw exceptions in an init block but if these are exceptions that are not caused by programmer error, it would be more Kotlin-idiomatic to expose a single constructor-like function that returns a wrapper or just null for invalid input.
Examples:
QUESTION
I am building a Spring Boot project for work. In this project I have service which is tasked with getting certain Documents from another backend. There a quite a lot of different scenarios where the documents have to meet certain criteria e.g. be from a certain date, which can be matched freely. Currently this is accomplished with normal method like so:
...ANSWER
Answered 2020-Dec-11 at 14:27If you want to use a fluent interface here, the object returned by your getDocuments()
method would have to be the starting point for the method chain. Perhaps create something like a DocumentFilter
class that you can return from there, then you'll end up with something like this:
QUESTION
I'm trying to implement a checked builder pattern similar to how it's described in this: https://dev.to/schreiber_chris/creating-complex-objects-using-checked-builder-pattern
The result I'm trying to reach is as follows:
...ANSWER
Answered 2020-Apr-29 at 20:22The easiest way is to use multiple interfaces to enforce your call ordering and then use that knowledge to associate your items. For example, something along these lines:
QUESTION
I tried building my own builder pattern after reading a popular blogpost, and an error came up so I thought I did something wrong. I double, triple checked my code but I kept getting the error. So I decided to copy the entire code from the blog and yet I'm still getting an error and I don't know why.
Code from the blogpost:
https://dzone.com/articles/design-patterns-the-builder-pattern
...ANSWER
Answered 2019-Dec-15 at 16:06You haven't defined the fields on the BankAccount
class, only on the Builder
. There is a comment in the article, where they implemented the builder, that says "Fields omitted for brevity". You'll need to follow the first example where they have:
QUESTION
I was reading about the pattern here:
https://www.geeksforgeeks.org/builder-pattern-in-java/
the last part demonstrates how to use the pattern, I tried to copy the code into my IDE & run it but it returns null,
the code:
...ANSWER
Answered 2019-Oct-23 at 13:21In your code, main thread is executed before student receiver executes the code.
QUESTION
I am new to C# and programming in general and was trying to find out how to implement a builder that can support nested objects when I found the following question: Builder pattern with nested objects
The accepted solutions work but I realize I don't fully understand what is going on in the code.
Especially this part that is defining the Action:
...ANSWER
Answered 2019-Oct-02 at 12:55Action is a delegate type, and in C# delegate types (like Action
, Func
and Predicate
, or just straight up delegate
) are ways of passing methods around as parameters. Delegate types can be called directly by doing itemBuilder(rib)
, this executes the Action (Method) itemBuilder
with the parameter rib
.
What it does is this:
First we declare the method with the Action parameter
QUESTION
I would like to create a builder class (i.e. a class implementing the builder design pattern) in a Spring project.
The problem is that I need the builder to use some Spring services.
I obviously don't want the user to explicitly provide the services in the constructor, but when I tried to @Autowire
the services, I got Autowired members must be defined in valid Spring bean
. I could Annotate my builder with @Component
, but that would make it a singleton which will not be desirable for a builder.
How can I inject services to my builder class without making it a singleton?
To use the example from this article, lets say I have the following builder:
...ANSWER
Answered 2019-Aug-27 at 09:14There are 2 ways to do that:
1) Put service into withOwner() method
QUESTION
I have a class hierarchy with a single abstract base class and several child classes. The base class has ~25 fields and each child has an additional number 0-8 fields.
I would like to use the Builder pattern to construct each child instance and I'd like to use Lombok as much as possible to keep the code concise. Following this suggestion I have the code as below:
...ANSWER
Answered 2019-Aug-13 at 07:56This can be achieved using the (experimental) @SuperBuilder
annotation and lombok >= 1.18.4. You can customize the @SuperBuilder
of Base
by adding a method that takes a BValuesProvider
as argument and sets all values from that:
QUESTION
I'm trying to use builder patterns (borrowed from Java) to allow structs to implement interfaces. For example, I would ideally like this code pattern:
...ANSWER
Answered 2019-May-07 at 05:26Here is a way to do it, though it feels very clunky.
QUESTION
This is an extension question to How to use SpEL to read payload and header content in a Spring Integration Router
Technologies in my project
...ANSWER
Answered 2019-Apr-23 at 16:40OK. I see you have an XML syntax error. The fix is like this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install Builder-Pattern
ModifiableInterface::PHASE_PRE_BUILD
ModifiableInterface::PHASE_POST_BUILD
an array of parameters which must at least contain an 'name' item specifying the required action.
the name of an event, usually ModifiableInterface:l:PHASE_PRE_BUILD or ModifiableInterface::PHASE_POST_BUILD, but it can be any string
to your composer.json "requires" section. Clone this repo, and then run Composer in local repo root to pull in dependencies.
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