It is a general question.
I am not sure whether i could post this question here. As i search in the programmer section and it seems to me that it is meant for in-depth question on programming.
As i am not a programmer ,however, i would like to find out how is API related to a plugin.. Do they have and difference?
I have tried to google in the web but not able to find any answer to my own question.
Thanks in advance.
Justin
"An application programming interface (API) is a set of routines, protocols, and tools for building software and applications" (Wikipedia).
What this means is that you establish a connection to another program / service which provides you certain functionality, like data retrieving in case of the Twitter API or operations and commands like from the Win32 API. Without this interface, there would be no ("easy") way to make use of the program.
"A plug-in [...] is a software component that adds a specific feature to an existing computer program" (again, Wikipedia).
This means that you have already built an application but want to enhance its functionality / appearance. For instance, you have a table on an HTML page but want to make it searchable. You the could use the jQuery Data Tables plugin. In this case you take an existing piece of software and entirely integrate it into your application.
I guess, as a developer you have a very intuitive understanding of these two and thus can distinguish more easily. Nonetheless, I hope that my explanation made it a bit clearer for you.
If not, do you have any specific question?
When talking about the pros and cons of an API versus plugin integration, it is important to highlight that there is no right or wrong basically both have the same nature.
API stands for Application Programming Interface. An API basically defines how a component interacts with a system, facilitating the communication between them.
More integration flexibility. The merchant has total control over the integration and can make the checkout page look as desired.
A theme or skin is a preset package containing additional or changed graphical appearance details, achieved by the use of a graphical user interface (GUI) that can be applied to specific software and websites to suit the purpose, topic, or tastes of different users to customize the look and feel of a piece of computer software or an operating system front-end GUI.from Wikipedia
Easy and ready to use integration. Within a few minutes, the payment methods can be available at the checkout.
Related
I am freelance programmer and i have a client who wants to build web-based software for scheduling/booking events. There is very few rules for possible booking options, but they are somewhat uncommon so there is no ready-made software to fully support them.
Anyway, besides that, the most important part is pretty common: calendar with events, reminders etc. So i believe there is some tools i can use, at least for that part.
What i'm interested in, is what tools can i use to build custom calendar, where i can write my own rules to prohibit user from booking in certain situations? Maybe there is some special framework (or, much more likely, plugins for web-frameworks) for scheduling software? If not, which ready-made software support maximum customization?
Well since you didn't specify what language your most familiar with i'll just stick to php.
Now you have a few options here.
A) You can start from a framework with some libraries and build from there. The major pro is that you can customize it like you want it. Downside would be more time actually making it, and since a client sets specific deadlines this might not be the right solutions.
B) You could start with something like Joomla. Now I do agree that it does have it's bloat, more than a million lines of code if I can remember. But with some searching I found some good booking systems that are built into modules.
If you go with B, you will be able to worry on details instead of the core grunt stuff. I've used joomla for a few different sites, and it's extremely customizable if you spend time with it.
In the end it's honestly related to your time restrictions, and your language of choice. Joomla is built with PHP if your wondering.
Hope this helps,
Daniel
This is a part of my course project.
Basically, there are vendors which provide food and at peak hours the queue gets so large that people have to wait long for their order.
Our project is like an online site which will enable users to order food. After ordering the food, the user will get an info as to where does he lie in the queue. This way students can order from their hostel rooms without actually going to the vendor and getting their time wasted by waiting in the line. As soon as the user orders the food, vendor gets notified of the project so that he can start preparing the food.
I am completely new to web development so I am not sure what to use. This project will also work as an exercise to learn about web development.
I have heard about Drupal & Joomla CMS. Also, Django framework is also there and I am actually confused as to what technology to use.
I am also confused as to what is the difference between a framework and a CMS? How do they differ and which one will suit me.
So, how do I go about developing the
application?
A framework is a basic application without any concrete business logic. It contains basic structure and sometimes basic features (like database connectivity and other standard libraries). You have to write your code yourself.
A CMS is a content management system. It is essentially a complete website but without the content. it provides tools to write content (web pages). The most popular ones (like Joomla) come with a bunch of templates too that you can download to give your site any look you want.
A CMS probably doesn't have enough features to provide you with this logic. You will probably need to do some programming to get this done. It may still be useful to use a CMS, though. Lots of them support various plugins that allow you to add these kind of features and still allow you to easily edit regular pages.
Frameworks are libraries turned on their heads. You plug a library into your code; a framework turns this around by abstracting a particular problem in such a way that you plug your code into it to solve a problem. It's the Hollywood principle: "Don't call us; we'll call you."
People who write frameworks have deep knowledge of a particular problem domain. They usually represent the distillation of several attempts to solve a problem, with best practices, clear abstractions, and good plug-in points made clear from long experience.
Django is a Python framework for web applications that have a browser front end and relational databases for persistence.
That's one example of a framework.
A CMS (Content Management System) allows users to dynamically add and manage content in a web application. I think they solve slightly different problems from Django, because it is specialized to the problem of content management.
I'd recommend starting your queuing problem without a front end at all - just text. Concentrate on the subtleties of queuing. Get that right with your object model and then expose a user interface to display it to users.
CMS is a 'content management system'. If provides modules that you can plug in. The end effect is it sets up a website for you, and you have admin pages where you can enter content. For special stuff, you use plugins. If you have to, you can write your own plugins.
A development framework is just a stack of technologies you can use to develop an application. So for example, the Grails framework uses Hibernate(persistence) and Spring(dependency injection and other stuff) under the covers -- it is providing and using existing tools (which are themselves frameworks) which you will in turn use to build the application.
With a framework, you basically start with a bunch of tools in your toolbox, but little or no parts of a running web app out of the box. You have to develop the functionality with the tools. With a CMS system, it's like they have implemented something for you, but it is really generic and you will have to tailor it to your needs.
I am looking to develop a multi-user web application that supports the following key features:
fill out forms with demographic data on individuals
define and administer surveys & polls
generate nice reports with graphs)
user rights administration and generic login stuff
My dilemma is whether to use a CMS (Drupal?) or develop from scratch.
Putting the time and cost issues aside for a minute, which are an obvious CMS strength, what are the weaknesses and potential risks using a CMS? my gut tells me that a CMS will be very easy and quick to start with, but when the features list begins to grow - I will pay the bill with having to delve into unfamiliar DB structure and code, try to tweak existing modules or write my own from scratch.
Is it really better, over the long run, to use a CMS?
There are two basic types of CMSes:
focused on features
focused on flexibility
The first type - focused on features - usually offer lot of modules or extensions to expand the basic functionality. You can build your web site very quickly using ready-to-use third party modules. There's a disadvantage of this way - it isn't so easy to bend or customize these modules. Usually you need to rewrite them.
Drupal. WordPress and Joomla are good examples of the first type of CMSes.
The second type - focused on flexibility - somewhere called Content Management Frameworks - don't offer so much prefabricated modules, but offer much more tools and ways to make your structure and relationships between elements fit your needs. It takes more time to learn this kind of CMS or to build your fist web site, but you can easily customize anything you need.
Some examples of the second type CMSes: SilverStripe, Symphony CMS, appRain, MODx, ezPublish.
appRain is one of the best customizable option where you will get both option of CMS and also complex coding by it's framework.
Development process is also easy. New version 4.0.4 is on they way to be released.
What is API?
What is Importance of it?
give me example of it?
how can developer use API?
For a broad answer to your question you can check wikipedia:
http://en.wikipedia.org/wiki/Application_programming_interface
An API is an abstraction that describes an interface for the interaction with a set of functions used by components of a software system. The software providing the functions described by an API is said to be an implementation of the API.
An application programming interface (API) is an interface implemented by a software program which enables it to interact with other software. It facilitates interaction between different software programs similar to the way the user interface facilitates interaction between humans and computers. An API is implemented by applications, libraries, and operating systems to determine their vocabularies and calling conventions, and is used to access their services. It may include specifications for routines, data structures, object classes, and protocols used to communicate between the consumer and the implementer of the API
What Good Are They?
APIs allow us to tie functionality into websites that would otherwise take an enormous amount of time and effort to build from scratch. APIs are a sanctioned way of reusing someone else’s functionality without having to build it all yourself.
http://en.wikipedia.org/wiki/Application_programming_interface
I am looking into something lightweight, that, at a minimum should support the following features:
Support for easy definition of actions through metadata
Wrapper that extracts parameters from request into clojure map, or as function parameters
Support for multiple forms of authentication (basic, form, cookie)
basic authorization based of api method metadata
session object wrapped in clojure map
live coding from REPL (no need to restart server)
automatic serialization of return value to json and xml
have nice (pluggable) url parameter handling (eg /action/par1/par2 instead of /action?par1=val1&par2=val2)
I know it is relatively easy to roll my own micro-framework for each one of these options, but why reinvent the wheel if something like that already exists? Especially if it is:
Active project with rising number of contributors/users
Have at least basic documentation and tutorial online.
First of all, I think that you are unlikely to find a single shrinkwrapped solution to do all this in Clojure (except in the form of a Java library to be used through interop). What is becoming Clojure's standard Web stack comprises a number of libraries which people mix and match in all sorts of ways (since they happily tend to be perfectly compatible).1
Here's a list of some building blocks which you might find useful:
Ring -- Clojure's basic HTTP request handling library; all the other webby libraries (for writing routes &c.) that I know of are compatible with Ring. Ring is being actively developed, has a robust community, is very well-written and has a nice SPEC document detailing its design philosophy. This blog post provides a nice example of how it might be used (reacting to GitHub commits).
Sandbar -- currently an authentication library, more types of functionality planned; under development.
Compojure -- a mature and robust library which provides a nice DSL for writing routes to be used on top of Ring. This will give you the nice URL parameter handling.
Compojure-rest -- "a library for building RESTful applications on top of Compojure". Compojure-rest is, as far as I can tell, in its early stages of development; perhaps you might see this as an opportunity to influence its design. :-)
For dealing with XML, there's clojure.contrib.lazy-xml (and the helper library clojure.contrib.zip-filter.xml) and Enlive (the built-in clojure.xml namespace is currently not very usable); these would be used in tandem (though for your purposes the former might suffice).
For JSON, there a library in contrib and clojure-json (and I think there was at least one other lib I seem to be forgetting now...); pick the one you like best.
All of will be perfectly happy with a REPL-driven development style (see the accepted answer to this SO question for a Ring trick which is very much to the purpose here). I suppose the above collection of links does leave a few blind spots (in particular, the authentication story is still being ironed out, as far as I can tell), but hopefully it's a good start.
1The only single-package solution for building webapps in Clojure that I know of is Conjure, inspired by Rails; unfortunately I have to admit that I don't know much about it, so if you feel interested, follow the link and look around the sources, wiki &c.
While building my first Clojure rest service I found myself asking often the same question. The Clojure Toolbox helped me a lot: http://www.clojure-toolbox.com/
If you are looking for some sample, real-world, illustrative code to get you started, then you could study this clojure-news-feed on github project which demonstrates how to implement a non-trivial RESTful web service with compojure/ring that wraps both SQL (postgresql or mysql) and NoSQL (cassandra), search (solr), caching (redis), event logging (kafka), connection pooling (c3po), and real-time metrics via JMX.
This blog about Building a Scalable News Feed Web Service in Clojure provides a good introduction. I ran some load tests against this service on a humble AWS deployment and got about eighty transactions per second with less than a half second average latency per transaction.
Take a look at liberator library http://clojure-liberator.github.io/liberator/ It's noy a standalone solution, buy very good for rest service definition.
Just to provide an updated answer to this old question, currently (in 2018) I think Luminus provides an excellent starting point. It's using many of the libraries (ring, compojure, etc.) mentioned in previous answers, is modular and as close to "single package" as you can get with Clojure. Specifically for REST, take a look at compojure-api. Luminus recommends buddy for authentication, I've had good success using it both for traditional session-based auth as well as Oauth and stateless JWTs.