builder

I want to put my entity in the function of the query builder: ->add( 'weeks', 'entity', array( 'class' => 'MV\CaravanBundle\Entity\CaravanRow', 'property' => 'line', 'query_builder' => function(EntityRepository $er ) use ( $caravan ) { return $er->createQueryBuilder('w') ->orderBy('w.dateFrom', 'ASC') ->where('w.caravan = ?', $caravan ) ->andWhere('w.visible = 1') ->andWhere('w.booked = 0'); } but get the message: Expression of type 'Entity\Name' not allowed in this context So what is the (best) way to give the querybuilder information. You should set the parameter separately like so: ->add(

Suppose you create a class names Person using the builder pattern, and suppose the Builder class contains methods body() , head() , arms() and of course build() and you consider methods head() and build() obligatory for the user of this class. We would like to somehow mark these methods obligatory, if possible using annotations. If a user of this class tries to build a Person instance but forgot to call either of these methods, we would like to get some kind of warning - either from the java compiler, or maybe from Eclipse or Maven, which we use to build our projects - any of them would do. Is

I am learning about the builder pattern, and so far I understood that, it is a great alternative to the commonly patterns used for initialization: Telescoping Constructor Pattern JavaBean Pattern The thing is, I don't really like to remove the getters and setters from the objects in my domain model. I always like to keep them as POJOs. One of the reasons I don't like it is: If i don't use POJOs, then it is not easy to annotate the variables when using ORM frameworks... So here are my doubts: -Is it possible to implement the builder pattern without using static inner classes? -If I have to use

Is there a way to use an automatic builder to create builder ( Joshua Bloch's Builder Pattern ) for classes in Eclipse ? For example an option in the menu, a plugin or something else. I could not find anything under " Refactor ". Khanna111 Maybe I am late to the party. Eclipse on its own does not provide a way to generate code to support builder pattern. However it can be extended through plugins to enhance the functionality. There is this plugin that I use this: https://github.com/henningjensen/bpep You may want to look at lombok annotations to generate builders without the boiler plate code.

In my application, I have to instantiate many different types of objects. Each type contains some fields and needs to be added to a containing type. How can I do this in an elegant way? My current initialization step looks something like this: public void testRequest() { //All these below used classes are generated classes from xsd schema file. CheckRequest checkRequest = new CheckRequest(); Offers offers = new Offers(); Offer offer = new Offer(); HotelOnly hotelOnly = new HotelOnly(); Hotel hotel = new Hotel(); Hotels hotels = new Hotels(); Touroperator touroperator = new Touroperator();

Are any of you aware of a library that helps you build/manipulate SQL queries, that supports JOIN's? It would give a lot of flexibility i'd think if you have something where you could return an object, that has some query set, and still be able to apply JOIN's to it, subqueries and such. I've search around, and have only found SQL Builder, which seems very basic, and doesn't support joins. Which would be a major feature that would really make it useful. Maybe you can try an ORM , like Propel or Doctrine , they have a nice programmatic query language, and they return you arrays of objects that

I have a builder class which I am using in one of my project. Let's say I have metricA as builder based on below class. I need to make a new builder metricB based on metricA by cloning metricA so that metricB contains all the values which were already there in metricA . In the constructor of MetricHolder I am initializing some fields (which are not set directly) basis on fields that have been set already. clientTypeOrPayId - I am initializing this field. If payId is present, then I will set this value or I will set clientType . clientKey - I am initializing this field as well in the same