I am developing a real estate application where users will require to constantly change the preferences to tune their searches. i.e The user may want to change the location of their search, price range and number of bedrooms. Since these values are constantly changing I was thinking savedOnstanceStates are better than SharedPreferences but I am unable to implement it. Any useful link or advice will be appreciated.
Related
Our Team is currently working on a car routing web application with the HERE-API. To meet the users expectations, we want to integrate all the typical features everyone is used to nowadays, most importantly the possibility to manipulate a route interactively by dragging waypoints out of it.
While for the most part everything seems to work fine, we are experiencing serious performance issues on long routes combined with large drag distances.
Our applicaton works a follows:
-at first the user has to provide two addresses
-the route is initially calculated using a full calculateroute request (representation = 'display')
-now, when the user drags the route, we request a new route with a waypoint at the mouse position and reduced response data (representation = 'dragNDrop') every 500ms for the time the dragging process lasts
While this procedure is working really well and fast when zooming in to a small section of the route, it is very slow and laggy when zooming out to country size and dragging while the whole route is being displayed. Implementing a throttling mechanism and experimenting with different call rates helped a bit, but not as much as we hoped.
Having a look at the constant performance on wego.here.com, we were hoping that there might be a better way to implement this feature with the HERE-API or maybe some kind of optimization.
We would very much appreciate any help.
Routing API will provide the best solution with respect to the use case. can you please share the API response time or full API request. please check clustering document if it aligns with the use case.
developer.here.com/documentation/maps/dev_guide/topics/clustering.html
if it does relate to the number of request(which cause the implementation of throttling and increase API requests), please connect us at
developer.here.com/contact-us
Thanks for your reply! It had been pretty crazy this year so this post is a bit late - my apologies for that.
The solution to our Problem was a small adjustment to a parameter value. We lowered the value of the parameter 'resolution' to '25:25' for calculateRoute-Requests while doing route draggings.
This is more of a general programming question.
I'm trying to create an app, think of it as a Yelp clone. I have most of it working but I'm missing one important feature. The data of the places around me. For now I'm only focused on food, so I'd like it if I search something like "Pizza", it'd show me all the pizza joints near me.
I was originally planning to use Google Places API. However if you havent heard, they're changing their pricing and lowering the free tier and upping the cost by a huge margin.
There's also the problem of saving the data. One workaround I saw a user suggest was to just keep using Google's API, but every time you make the query, store the data in your own DB as well (I only need address and name and latitude and longitude) so eventually, you'd have what you need in a sense. However I also want to have something like a simple rating system for each place like Yelp, but Google (and all other places like MapBox, Here Maps, etc) states something along the lines of "info from their API should not be stored or cached for more than 24hrs" but it's very broad and not specific.
So what I was planning to do was, call the Google API, grab the 3 info I need (Address, Name, Lat/Lng), add more fields to store the rating, likes, whatever else the user will add. Then store it in my database, but that doesn't seem like a solution now.
So does anyone have any ideas or advice? Or know of a service where I can get the details of all the food places? And if possible, can anyone confirm that storing the Name, Address, Lat&Lng is a violation of their policy since in my eyes, it's public data, but something like the rating that Google provides, or the pictures that Google provides, now that's Google property.
For obtaining places you can use OpenStreetMap, e.g. using Overpass API. Since larger traffic can be expected you should run your own database(s) instead of using the public APIs.
However OSM doesn't contain ratings. So you have to combine this data with some other publicly available rating system.
Foreword: I've searched around on this question a fair bit and found answers which are close to a solution, but not what I'm looking for. So here I am, and I hope someone can help me. I'm relatively new to VSTS, so be gentle (or at least constructive) ;P
The Question: I'm looking for a way to restrict access to specific tickets (NOT by ticket type) that contain NDA protected data, whilst keeping them in the same backlog and iterations as the rest of the tickets related to a project.
We have many different NDA protected customers, so whilst creating a new ticket type per NDA, and restricting access to this, could work, it's not the solution I'm looking for.
Alternatively, I'm barking up the wrong tree, and there is an entirely different and "better way" to support this use-case?
Edit 1 - More info: Let's say I have 1 backlog for a product. It contains only 2 work items. It's important there is only 1 backlog for planning and overview by a product owner.
One of the two work items contains sensitive information only half the development team should have visibility to. How do I keep both tickets in the same backlog and iterations, but hide the sensitive one from some team members?
Thanks in advance for your time!
Regarding permission of work items in a team project, you can set the permission in area and iteration scope, but can’t for specific work items.
So, you need to put these work items in different area and manage permission for this area. Simple steps:
Go to team project admin page
Work=>Areas
Click New/New child, to create a new area.
Click …=>Security, set the permission for the group(s) or user(s)
Click the default team’s settings => Areas
Click + Select areas to add that area in order to show related work items (in that area)
I have energyshop.se which is a small webshop im doing for a customer. She sells various stuff but she has meditations on .mp3 and on discs. The customers can choose to buy:
a disc which is then sent to their home address.
one listening to one part of a meditation or one listening to all parts in a meditation
some items are also available for download for another price.
So question is how do I solve this? We use PayPal at her site to make the payments and I know that after a payment I can redirect the users to a "thankyouforthepurhase"-page if I want to. That leads me to think that one option is to take the users to that page where they can download/listen, but I dont know how to "connect" the shopped item with the isplayed files to be downloaded and/or listene once too and how to limit this. I mean if the page is energyshop.se/thanks someone that have made the purchase can just copy that address and go straight there.
There is also a idea about codes in some way. If they make a purchase they get a code sent to them for download or listening, but how do I generate this code which has to be unique everytime and the password ha to change everytime someone has entered it so someone dont save the code as well.
Well im kinda out of ideas and not sure how to do this. I just wanna wrap this project up but I think I hve to solve this for her.
I guess the solution depends on how much control (or security) she feels is required. If all you need is a reasonable confidence that a user has paid, then you can be much more relaxed about the whole thing.
The 'thanks' page could easily provide the content in concert with the transaction id paypal will return - you can use this to control what is shown. If you're not too worried about a 'listen-once' item being replayed, or 'download' being downloaded a bunch of times then you can avoid a bunch of edge-case stuff (where download fails or listen-once feed dies halfway, etc) and simply serve links to content based on the transaction.
If its abused then you can put effort into locking down content, serving mp3 streams from one-time links, tracking downloads in a database etc, but that will cost significantly more (in both time and server resources) so if you can, try simple first :)
I have 2 1/2 years experience of VB.Net, mostly self taught, so please bear with me if I seem rather noobish still and do not know some of the basics. I would recommend you grab a cup of tea before starting on this, as it appears to have got quite long...
I currently have a rather large application (VB.Net website) of over 15000 lines of code at the last count. It does not do retail or anything particularly complex like that - it is literally just a wholesale viewing website with admin frontend, catalogue / catalogue management system and pageview system.
I don't really know much about how .Net applications work in the background - whether they are all loaded on the same thread or if each has its own thread... I just know how to code them, or at least like to think I do... :-)
Basically my application is set up as follows:
There are two different areas - the customer area and the administration frontend.
The main part of the customer frontend is the Catalogue. The MasterPage will load a list of products but that's all, and this is common to all the customer frontend pages.
I tend to work on only one or several parts of the application at a time before uploading the changes. So, for example, I may alter the hierarchy of the Catalogue and change the Catalogue page to match the hierarchy change whilst leaving everything else alone.
The pageview database is getting really quite large and so it is getting rather slow when the application is first requested due to the way it works.
The application timeout is set to 5 minutes - don't know how to change it, I have even tried asking this question on here and seem to remember the solution was quite complex and I was recommended not to change it, but if a customer requests the application 5 minutes after the last page view then it will reload the application from scratch. This means there is a very slow page load whenever it exceeds 5 minutes of inactivity.
I am not sure if this needs consideration to determine how best to split the application up, if at all, but each part of the catalogue system is set up as follows:
A Manager class at the top level, which is used by the admin frontend to add, edit and remove items of the specified type and the customer frontend to retrieve a list of items of the specified type. For example the "RangeManager" will contain a list of product "Ranges" and will be used to interact with these from the customer frontend.
An Item class, for example Range, which contains a list of Attributes. For example Name, Description, Visible, Created, CreatedBy and so on. The form for adding / editing loops through these to display relevant controls for the administrator. For example a Checkbox for BooleanAttribute.
An Attribute class, which can be of type StringAttribute, BooleanAttribute, IntegerAttribute and so on. There are also custom Attributes (not just datatypes) such as RangeAttribute, UserAttribute and so on. These are given a data field which is used to get a piece of data specific to the item it is contained in when it is first requested. Basically the Item is given a DataRow which is stored and accessed by Attributes only when they are first requested.
When one item is requested from a specific manager is requested, the manager will loop through all the items in the database and create a new instance of the item class. For example when a Range is requested from the RangeManager, the RangeManager will loop through all of the DataRows in the Ranges table and create a new instance of Range for each one. As stated above it simply creates a new instance with the DataRow, rather than loading all the data into it there and then. The Attributes themselves fetch the relevant data from the DataRow as and when they're first requested.
It just seems a tad stupid, in my mind, to recompile and upload the entire application every time I fix a minor bug or a spelling mistake for a word which is in the code behind (for example if I set the text of a Label dynamically). A fix / change to the Catalogue page, the way it is now, may mean a customer trying to view the Contact page, which is in no way related to the Catalogue page apart from by having the same MasterPage, cannot do so because the DLL is being uploaded.
Basically my question is, given my current situation, how would people suggest I change the architecture of the application by way of splitting it into multiple applications? I mean would it be just customer / admin, or customer / admin and pageviews, or some other way? Or not at all? Are there any other alternatives which I have not mentioned here? Could web services come in handy here? Like split the catalogue itself into a different application and just have the masterpage for all the other pages use a web service to get the names of the products to list on the left hand side? Am I just way WAY over-complicating things? Judging by the length of this question I probably am, and it wouldn't be the first time... I have tried to keep it short, but I always fail... :-)
Many thanks in advance, and sorry if I have just totally confused you!
Regards,
Richard
15000 LOC is not really all that big.
It sounds like you are not pre-compiling your site for publishing. You may want to read this: http://msdn.microsoft.com/en-us/library/1y1404zt(v=vs.80).aspx
Recompiling and uploading the application is the best way to do it. If all you are changing is your markup, that can be uploaded individually (e.g. changing some html layout in an aspx page).
I don't know what you mean here by application timeout, but if your app domain recycles every 5 minutes, then that doesn't seem right at all. You should look into this.
Also, if you find yourself working on various different parts of the site (i.e. many different changes), but need to deploy only some items in isolation, then you should look into how you are using your source control tools (you are using one, aren't you?). Look into something like GIT and branching/merging.
Start by reading:
Application Architecture Guide