I am using a package where I want to add an additional option to its main function and change the content in the main function accordingly. Other than that, I would like to use the package as it is right now.
What is the best way to do this? Any references would be appreciated.
If you think your change is needed by the rest of the world, too:
Contact the maintainer (packageDescription ("pkgName") $ Maintainer),
explain your change and
attach patches for code and documentation to the email?
If only you yourself need the change / want to try around locally:
? fix
see also ? assignInNamespace
get the source (packages on CRAN should be FOSS, but better read the license), make your chagne & install that package locally.
if you need to insert a bit of code (like an extra output statement): ? trace
This is what I did.
Create another function copied from the main function of the given package.
Change the function as you want.
If you need to use internal function of the package (or class), use <package name>::: in front of the function name.
Make your result inherited from the class you want.
For example, class(results) <- c("rpart","nnet")
Related
I am currently trying to extract property values from my properties file, but am running into some problems. I can't test this in ML query console, because the properties file doesn't exist there. I am currently trying to grab the values of the file like this
let $port := #{#properties["ml.properties-name"]}
I've also looked at
xdmp:document-get-properties(
$uri as xs:string,
$property as xs:QName
however that is limited to .xml files I believe. Does anyone have a way/work-around of accessing these values? I can't seem to find one I've looked at some documentation on Marklogic's website, but can't seem to get anything to work. The way I was accessing before was in ruby, through monkey-patching allowing me to access those private fields.The problem with that is the ruby script I call is only called once, while my .xqy file is ran every minute that sends args to another function. I need to access those args from the properties file, right now I just have them hard-coded in. Any thoughts?
Thanks
You cannot access deployment properties like that, but you can pass them along with deployment. If you create a new REST app with latest Roxy, you should get a copy of this config.xqy added to src/config/:
https://github.com/marklogic-community/roxy/blob/master/deploy/sample/custom-config.xqy
That file is treated specially when deployed to the modules database. Properties references are replaced inside there. In your case, add another variable, and give it a string value following the #ml.xyz pattern:
declare variable $c:port := "#ml.property-name";
You can then import the config lib, and use it in your code.
These so-called Deployer Substitutions are described in more detail on the Roxy wiki:
https://github.com/marklogic-community/roxy/wiki/Deployer-Substitutions
We are trying to add one additional feature to our method for TBO. The feature needs to be executed only when a new document for that object type is imported and should not be executed in any other case like checkin checkout or any changes in attributes.
However the new code is getting called everytime we make any changes to attribute to that document.
We have put that code in doSave() method.
I tried isNew method for distinguish between newly imported Document and other scenarios, however could not get success, may be missing the usage details of the method.
Can anyone suggest anything?
We are on Documentum version 7.2.
I always use isNew() method to check is object new or versioned, I don't remember having problems with it at any DFC version.
Only one thing that comes in mind is to make sure you don't use super.doSave() while inside the code since right after it method will return false.
But this is expected behaviour.
If you really need to do this - some calulations based on programatically preset data - make sure you use value saved within local variable throughout your code.
If you think you are experiencing bug with the method try with another DFC version or report a bug to the Support.
I am attempting to build a little modification in our code to allow easier A/B testing.
I'd like to know if I can somehow
have my regular code under the /templates directory
have any a/b code under /templates/_abtests/, but also follow the same hierarchy as the regular code. for example... an ab test can overwrite a file like '/templates/foo.tpl', and use instead '/templates/_abtests/testfoo/foo.tpl'
I tried changing the template directory when in a test. Right before calling the display method, I would check if a user is in a test, and if so, set up the template_dir accordingly. I'd assign an array with the 'ab' directory first, then the default. I am using Smarty2.
the problem with this is that it caches the first instance, and uses that as the template for the baseline and ab test case. ie: i have a parameter to force me into a test bucket, but the template is the same.
thoughts on how to achieve this? goal is to not have to add a bunch of template hooks (if/else) in the templates. and achieve this by simple template/file includes.
I believe that the solution to my problem could be to put templates into folders. ie: /templates/base/, /templates/test_foo/, etc.". then in my template_dir setting, set the array up based on what test we are in.
I had tried this with mobile/desktop before, and forgot about this solution.
I can extend the smarty_template class and override the display method to change the template_dir. adding the test directory first.
I have two products. For example A and B. In A product i need to enable to one validation which is present in AValidator.xtend file and B product is depends on A so when i run B product that check needs to be disable the warning.
AValidator.xtend:
#Check
def validateElement(Element e)
{
warning('''Element «e.name» missing in files.''', e, package.Literals.NAMED__NAME)
}
The same check should not be work for BProduct.
Is there any override function can do for these?
Many thanks in advance.
There are two ways to solve this:
You can add a system property (probably a boolean flag) which enables this feature. In the ini file of A, you enable the option. In B, you omit it.
You can split the plugin into a library and then two plugins which you use in the products.
Splitting the plugin works like this:
You need to create a new plugin and copy all the shared code into it. It can also contain the code from the validation which is the same for both products. Give the validation code the name SharedValidator
In this plugin, you need to rename DslRuntimeModule (Dsl is the name of your grammer, it extends AbstractDslRuntimeModule which contains the binding for the validation). Rename it to SharedDslRuntimeModule.
Then you create a plugin for product A. It contains the specific validation. This class needs to extend SharedValidator.
You also need to create a binding which extends SharedDslRuntimeModule and so you can bind the new validator class.
That's the rough outline. You will have to copy/change several other files (like the DslStandaloneSetup and the plugin.xml), too, but those changes should become obvious when you fix the compile errors.
... Maybe a flag is more simple.
Solution for this problem is Creating extension point.
I have created one extension point in AProduct validator plugin with the name of interface IProdcutEnabled with one method.
And Added that extension point in BProduct validator plugin.
Then AProduct validator class,Validation i checked whether extension point is used by any product or not. If it's used don't show warning.
I am curious about the proper way to stop a user from activating my plugin if their system does not meet certain requirements. Doing the checks is easy and I don't need any help with that, I am more curious how to tell WordPress to exit and display an error message.
Currently I have tried both exit($error_message) and die($error_message) in the activation hook method. While my message is displayed and the plugin is not activated, a message saying Fatal Error is also displayed (see image below).
Does anyone know of a better way, that would display my message in a proper error box without displaying Fatal error, it just looks really bad for new users to see that.
Thanks for any help in advance.
This is a little undocumented, as you might have noticed. Instead of die(), do it like this:
$plugin = dirname(__FILE__) . '/functions.php';
deactivate_plugins($plugin);
wp_die('<p>The <strong>X</strong> plugin requires version WordPress 2.8 or greater.</p>','Plugin Activation Error',array('response'=>200,'back_link'=>TRUE));
The lines above wp_die() are to deactivate this plugin. Note that we use functions.php in this case because that's where I have my Plugin Name meta data comment declaration -- and if you use a different file, then change the code above. Note that the path is very specific for a match. So, if you want to see what your path would normally be, use print_r(get_option('active_plugins'));die(); to dump that out so that you know what path you need. Since I had a plugin_code.php where the rest of my plugin code was, and since it was in the same directory as functions.php, I merely had to do dirname(__FILE__) for the proper path.
Note that the end of the wp_die() statement is important because it provides a backlink and prevents an error 500 (which is the default Apache code for wp_die()).
It is only a idea though. Try checking the wordpress version and compare then use php to through custom exception/error. PHP 5.0 try catch can be a good way to do it. Here is some resources.
http://www.w3schools.com/php/php_exception.asp
http://php.net/manual/en/internals2.opcodes.throw.php
You can try the first link. It is pretty basic. Thanks! hope the information will be helpful.