builder

问题 We are using the immutables framework to generate all DTOs. Now we would like to map these objects one to another with mapstruct. But the generated DTOs are immutable and have no setters and no constructor, corresponding to the builder pattern. They are only filled through the corresponding builder accessed by a static builder() -method. We instead tried to map DTO1 to DTO2.Builder which would work if mapstruct would recognize the setter in the Builder but these do not have void return type

问题 ruby-1.8.7-p249 > xml = Builder::XmlMarkup.new => <inspect/> ruby-1.8.7-p249 > xml.foo '<b>wow</b>' => "<inspect/><foo>&lt;b&gt;wow&lt;/b&gt;</foo>" ruby-1.8.7-p249 > Builder is escaping the content and is converting the b tag into an escaped value. How do I tell Builder to not escape it? I am using Ruby 1.8.7. 回答1: Builder::XmlMarkup#<< xml.foo do xml << '<b>wow</b>' end 来源： https://stackoverflow.com/questions/2693036/how-to-tell-builder-to-not-to-escape-values

问题 In Google's Protocol Buffer API for Java, they use these nice Builders that create an object (see here): Person john = Person.newBuilder() .setId(1234) .setName("John Doe") .setEmail("jdoe@example.com") .addPhone( Person.PhoneNumber.newBuilder() .setNumber("555-4321") .setType(Person.PhoneType.HOME)) .build(); But the corresponding C++ API does not use such Builders (see here) The C++ and the Java API are supposed to be doing the same thing, so I'm wondering why they didn't use builders in C+

问题 This is an attempt to understand a portion of ITEM 40: Design Method Signatures Carefully from Effective Java 2nd Edition. One of the things suggested to improve method signature readability is to aim for four or fewer parameters. It is suggested that longer parameter lists be managed by using a variety of techniques one of which is as follows : A third technique that combines aspects of the first two is to adapt the Builder pattern (Item 2) from object construction to method invocation. If

问题 I’m using JPA 2.0, Hibernate 4.1.0.Final and MySQL 5.5.37. I have the following two entities … @Entity @Table(name = "msg") public class Message { @Id @NotNull @GeneratedValue(generator = "uuid-strategy") @Column(name = "ID") private String id; @Column(name = "MESSAGE", columnDefinition="LONGTEXT") private String message; and @Entity @Table(name = "msg_read", uniqueConstraints = { @UniqueConstraint(columnNames = { "MESSAGE_ID", "RECIPIENT" }) }) public class MessageReadDate { @Id @NotNull

问题 I had a question regarding the "Builder Pattern" covered in "Effective Java". Do we need a .build() method for it to correctly implement the pattern? For instance, let's say that we have the following class: public class CoffeeDrink { private int numEspressoShots; private short milkType; private boolean withWhip; private CoffeeDrink() { } public static CoffeeDrink buildNewDrink() { return new CoffeeDrink(); } public CoffeeDrink withEspresso(int n) { this.numEspressoShots = n; return this; }

问题 Template pattern provides algorithm in the base class whose steps can be modified in the derived class. In Builder pattern, concrete builder exposes methods for building a product which are called from the Director class. I understand there is difference with respect to the purpose of using these patterns. Template pattern is a behavioral pattern which changes one or more steps in a template whereas builder pattern is a Creational pattern. Apart from the above said difference, are there any

问题 I have a lot of client code that build Map using the same keys (to query MongoDB). My idea is to provide helper methods that hide keys. First try, I have used default parameters (cf object Builder below) but the client hava to deal with Option I now use a builder pattern (cf class Builder below) Is there a better way ? class Builder { val m = collection.mutable.Map[String, Int]() def withA(a: Int) = {m += (("a", a))} def withB(b: Int) = {m += (("b", b))} def withC(c: Int) = {m += (("c", c))}

问题 Trying to use AcceleoCompiler with an Ant Builder. When i build with ant i get the following error: compile: [acceleoCompiler] eINSTANCE BUILD FAILED C:\Users\random\workspace\foo\bar\Framework\buildstandalone.xml:52: eINSTANCE Here is how i have my target defined and some other information that could be important. I am very new to ant and acceleo. Let me know if there is any other information you need. I am not sure that any of the below is correct, let me know if there is anything i need to

问题 I want to use hipay in my site. So i need generate a xml in a action and then send via post to hipay site. My question is: How i can create a xml dinamically and then , in the same action, send this xml via post? Example in my controller def action_generate_xml @xml = Builder::XmlMarkup.new() # I want generate my xml here # # # End generate xml #Now i want send My XML via post #CODE FOR SEND VIA POST end Thanks in advance 回答1: Assuming the XML data is sitting in an ActiveRecord object then