I have an XML document that I'm parsing using ::parse, and there are few descendant elements inside the root node of the document that I would like to create copies of, but as a custom subclass of Nokogiri::XML::Element.
It seems like
MyElement.new('myElement', existingElement)
should do it, but the new object ends up being empty, except for the name. I'm hoping there's a better way of doing it than just iterating over all the attributes, and manually assigning the children, namespace, etc to the new object.
Is there something like a class method for #dup that takes an existing element? Or some other way of handling this?
Related
I have json array & want to group weeks according to person id's as mentioned in below example. I tried code but unable to get it because i am new to free-marker code. The JSON Array as follows:-
[{"Hours":"5.500","Status":"Draft","Week":"17","person_name":"Raj","person_id":"1414"},
{"Hours":"0.500","Status":"Draft","Week":"17","person_name":"Raj","person_id":"1414"},
{"Hours":"24.500","Status":"Draft","Week":"14","person_name":"Mukesh","person_id":"1046"},
{"Hours":"7.500","Status":"Draft","Week":"15","person_name":"Mukesh","person_id":"1046"},
{"Hours":"3.000","Status":"Draft","Week":"16","person_name":"Mukesh","person_id":"1046"}]
Could please help me. The output in below foramt
for id {1046:[14,15,16], 1414:[17,17]}
Such kind of restructuring is not something that should be done inside a template. While FTL can add together map-like values and also list-like values, it would be very inefficient to hack this together with that (it's only for very simple tasks). The entries should be already grouped before passing the data to the template.
If you must initiate this from the template, then you will need a utility Java object that has a method that does this grouping, or a TemplateMethodModelEx implementation that does it. Then you call that utility object from the template (like utils.groupByPersonId(foo) or groupByPersonId(foo)). Such utility objects can be exposed to the template on various ways: as part of the data-model, globally as "shared variable" through the freemarker.tempalte.Configuration object, or by ensuring that the utility TemplateMethodModelEx (or any other TemplateModel) class is visible for Java and then do something like <#assign groupByPersonId = 'com.example.GroupByPersonIdMethod'?new()> in the template.
I've been trying to set up a way to pull a JSON file from a JMenu File Selector, and while I'm able to create a layer from said file, I'm not sure what to do in order to render it.
From what I understand, layers in World Wind render themselves. However the layer.render method requires a DrawContext object as input. I'm not able to find the relevant DrawContext object in the appFrame I've been passed as an argument. I can find a GlContext object via appFrame.getWwd().getContext(). I thought there might be a way to find the object that created that GLContext, which should be a DrawContext object. I suppose another GLContext could have created that specific GLContext, but eventually the first GLContext has to have been made by a DrawContext object of some sort. At least that's my understanding of how that interaction works.
So my question has two parts I suppose:
Am I correct in the method I'm using to render the Layer/My understanding of how Layers are rendered?
Where do I find the appropriate instances of the DrawContext object I need to render the layer if the way I'm going about it is correct?
Is there some way in Xcode to enter an object's name, and then get a list of the methods that can be used with that object, sorted either hierarchically by inheritance or by return value type?
I know you can get a list of methods by pressing Control-Space after entering the object's name in standard bracket messaging syntax; however, this list often contains numerous methods that are not applicable to the given object. As a result, you still have to scroll through a bunch of garbage, and then look up the class definitions for the object, or reference custom object implementations you have created in order to see which methods will work.
I'm trying to draw diagram that contains a single entity which holds multiple elements inside.
My MVC structure looks something like this:
Model: contains EntityModel.java and ElementModel.java which represents my model objects.
View: EntityFigure.java and ElementFigure.java
Controller: EntityEditPart.java and ElementEditPart.java
I'm overriding getModelChildren() in EntityEditPart.java to return list of ElementModel.java so that is how GEF knows that an element "belongs" to an entity.
Since I would like to calculate my entity's figure size and include the embedded elements in this calculation, I cannot call entityFigure.getPreferredSize() during createFigure() in EntityEditPart.java since at this point - the elements figures do not exists (createFigure() in ElementEditPart.java is not invoked yet).
I'm looking for a place to set my entity figure after all child figures were created.
I though about overriding addNotify() in ElementEditPart.java, however, it is being called after creating a specific inner element and not after all elements created.
Any ideas?
Hope I was clear enough...
You can do it in an extension of
refreshChildren()
method of an edit part, since all the child creation is done in refreshChildren() of superclass's (AbstractEditPart) refresh method:
public void refresh() {
refreshVisuals();
refreshChildren();
}
Or, you can just extend
refresh()
I'm working on transforming legacy code to a new one in a new project.
There are more than 100 of similar codes and I have to transform them to a slightly different new format.
Basically, get a particular method from the legacy application, rename it, modify the content of the method to fit the new format, and put that method in a class for the new project.
Since there are more than 100 of them, I want to do it programmatically, instead of manually copying and pasting and modifying.
Is there a way to get the source code of a method as a string dynamically?
It must be only for a specific method, not the entire content of the class or file.
After that is done, I think I can just do gsub, or maybe use AST (Abstract Syntax Tree) to pass to Ruby2Ruby.
So I need more than the answers for the question How can I get source code of a methods dynamically and also which file is this method locate in?.
Any help will be greatly appreciated.
After further investigation, I resorted to use live_ast gem to convert the method object to Abstract Syntax Tree and generate the code for the method from that Abstract Syntax Tree (it's using Ruby2Ruby underneath).
Actually, live_ast provides a convenient method to_ruby to do the both steps.
It's working very well.
e.g.
require 'live_ast'
require 'live_ast/to_ruby'
SomeClassWithMethod.instance_method(:method_name).to_ruby
You could use source_location to find the beginning of the method you're looking for, then parse the file from that point until the end of the method. You could examine each line of the file starting from the start of the method, incrementing a counter when you find the start of a block and decrementing it when you reach the end of a block, until the counter reaches 0.