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• How to get #entries of last hour in MySQL, correcting for timezone?

  - by Ferdy

  I am storing activity entries in a MySQL table. The table has a date_created field of type timestamp and through PHP I insert the activity entries based on GMT: $timestamp = gmdate("Y-m-d H:i:s", time()); This works fine. On my client I am on GMT+2. If it is 16:00 here and I insert an entry, it is stored in MySQL as 14:00. This is as expected I guess. My Now I would like to get the number of activity entries from MySQL within the last hour. I'm using the following query: SELECT COUNT(id) as cnt FROM karmalog WHERE user_id = ' 89' AND event='IMG_UPD' AND date_created > DATE_SUB(CURRENT_TIMESTAMP, INTERVAL 1 HOUR) This returns nothing, because CURRENT_TIMESTAMP uses the MySQL timezone settings, which is set to SYSTEM, which is set to GMT+2. I guess what I am looking for is a GMT_CURRENTTIMESTAMP in MySQL, is there such a thing?

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• How to analyse contents of binary serialization stream?

  - by Tao

  I'm using binary serialization (BinaryFormatter) as a temporary mechanism to store state information in a file for a relatively complex (game) object structure; the files are coming out much larger than I expect, and my data structure includes recursive references - so I'm wondering whether the BinaryFormatter is actually storing multiple copies of the same objects, or whether my basic "number of objects and values I should have" arithmentic is way off-base, or where else the excessive size is coming from. Searching on stack overflow I was able to find the specification for Microsoft's binary remoting format: http://msdn.microsoft.com/en-us/library/cc236844(PROT.10).aspx What I can't find is any existing viewer that enables you to "peek" into the contents of a binaryformatter output file - get object counts and total bytes for different object types in the file, etc; I feel like this must be my "google-fu" failing me (what little I have) - can anyone help? This must have been done before, right??

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• How to display .gif (with animation) on dc

  - by mukul sharma

  Hi All, in my application i am having a panel with associated a wxWindowDC and wxMemoryDC. i have to draw the various thing on that panel like bg color, on top of bg color bg image and on the top bg image i have to draw some text etc. I am storing all this thing into memory dc and finally in paint handler i m copying the memory dc to window dc. But i stuck in this process when i have a .gif (with multiple frames) and i m trying to bliting this gif image on DC that time it shows only a single frame of that gif image (its became a ordinary still image not an animated image). how i can store this whole gif image in memory dc and display full gif image on dc(with animation). I cant use wx.AnimateCrl() because i need that image in memoryDC. Any help really appreciable.

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• Mysql advanced SELECT, or multiple SELECTS? Movies keywords

  - by Supyxy

  I have a mysql database with movies as follows: MOVIES(id,title) KEYWORDS_TABLE(id,key_id) [id is referenced to movies.id, key_id is refernced to keywords.id] KEYWORDS(id,keyword) //this doesn't matter on my example.. Basically i have movies with their titles and plot keywords for each one, i want to select all movies that have the same keywords with with a given movie id. I tried something like: SELECT key_id FROM keywords_table WHERE id=9 doing that in php and storing all the IDs in an array $key_id.. then i build another select that looks like: SELECT movies.title FROM movies,keywords_table WHERE keywords_table.key_id=$key_id[1] OR keywords_table.key_id=$key_id[2] OR ......... OR keywords_table.key_id=$key_id[n] This kinda works but it takes too much time as we talk about a database with thousands of thousands of records. So, any suggestions?? thanks!

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• How does functional programming work?

  - by Headcrab

  I'm used to imperative/OO programming (know C, C++, Python, PHP, etc.). I wanted to get into functional programming but there are some things unclear to me. Take for example the languages F# and Haskell: How do you implement loops? By recursion? Eew. What about conditions? How can you get by without variables? I mean.. What do we have RAM for.. storing variables, right?

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• Why is HttpContext.Current.Session available in HttpModule but not in Response.Filter?

  - by Abtin Forouzandeh

  I have written an HttpModule that adds a response filter. The filter is capturing page output and storing it in a session variable. I am able to access HttpContext.Current.Session in my HttpModule. The HttpModule is handling the PostAcquireRequestState event. I am still able to access HttpContext.Current.Session in the PostAcquireRequestState event. I am adding a custom stream that inherits from Stream to Response.Filter HttpContext.Current.Session is null when accessed from the Stream.Write method. Everything worked fine when using an InProc SessionState. However, I now must use StateServer. Using StateServer, the code is now broken. Any ideas?

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• JDO in Google App Engine: order of keys in unowned one-to-many relationship

  - by Kel

  I'm implementing web application with JDO in Google App Engine. According to documentation, in owned one-to-many relationships, order of elements in "owner" object collection is determined either by automatically created index field, or by information given in explicit ordering clause. For example: @PersistenceCapable public class Person { // ... @Order(extensions = @Extension(vendorName="datanucleus", key="list-ordering", value="country asc, city asc")) private List<ContactInfo> contacts = new List<ContactInfo>(); In unowned relationships, "owner" object contains collection of keys of "nested" objects, for example: @PersistenceCapable public class Author { // ... @Persistent private List<Key> books; Is order of keys preserved, if I use List<Key> collection in "owner" object for storing keys of "nested" elements? I could not find answer neither in JDO relationships article, nor in Data Classes article :(

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• Php file outputting javascript for include as a JS file - need to restrict so its not opened in a browser window

  - by Ali

  Hi guys, I'm storing configuration details in a database which I need to use in javascript. I'm accessing all this using php and instead of outputting all the details into inline javascript code on the main page I've instead created a php file that outputs content type javascript and refernce it in my main page as an external javascript file. I want to set it up so that it can't be viewed in a browser window i.e : <script type="text/javascript" src="phpFileThatDoesJS.php" ></script> should work but typing www.mysite.com/phpFileThatDoesJS.php in the browser shouldn't EDIT ========== The thing is that I have to edit a script that for some oddball reason stores the username and password of a user in a javascript Object and outputs it within script tags. I have to set it up so that this is not viewable by a simple view source action. Thats why I thought of referencing it as an external javascript. Isnt there any htaccess tricks that I could use?

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• JSON documents and SQL database tables

  - by Sharmi

  Do JSON documents in RavenDB cost more than the SQL Server tables in terms of the storage and query costs. And also for centralized access, which one is better? What are the disadvantages of NON-SQL databases like RavenDB,CouchDB,MongoDB, etc... ? I can get that some of these are open source and support more datatypes like enums,objects,etc. but otherwise i don't see any big advantage? Currently there is a problem of storing huge amount of logs from various locations. I am planning to suggest these to my manager so just need a clear idea.

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• zend_acl: Adding extra resources dynamically and getting a param predispatch

  - by Timmeh

  First sorry about the woffle as I'm not sure how best to describe this. Basically I am not sure how I can get param in the bootstrap before the controller is loaded, but here is the long winded version... I have got an acl class storing all my default resources in. All my page/post content is a database and I want the admin the ability to choose who which role the page would become available. I know it is possible just to loop through the database table and add them all in at once, but I am concerned that this is a drain on resources. I have it working whereby my access check plugin can call a dynamic permission function, but I need to get the parameter of the current page ID and it's permission to set it before the controller is loaded. Does that make sense or am I worry over nothing and I should just get the resources of all the pages at once? thanks in advance for reading my garble!!

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• hosting acounts for large uploads

  - by Phil Jackson

  Hi, im wondering if anyone knows of any host providers ( uk preferably ) that deals mostly with accepting large file uploads. Most hosts only let you push something like 1.5mb ( thats taking into account the connection and the max execution time ). What i am looking for is a host specificaly for storing files on. I was going to create an upload script onto my application which posted the file to the external host and then return back ( using headers so the user doen't even know they have left ). Does anyone know of a host for this?

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• How do I retrieve readonly values when using a DetailsView control to update a record?

  - by lincolnk

  I'm using a detailsview control to update a record, however in this particular case there's only one field that can be changed out of a many. The update method for my object takes all fields as parameters. When the detailsview's updating method fires, the values for the readonly fields (those rendered as a Label) are not available in the e.NewValues collection. I'm currently grabbing a reference to the object when the detailsview is databound (in the objectdatasource selected event handler), storing it in session and manually adding entries to the e.NewValues collection when updating fires. It works but seems kind of heavy handed. So, is there a better way to get the read only values back into my update method? Or is there a better way of doing this altogether?

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• What mail storage should I choose for our web application; IMAP, key-valud store, rdbms, ...

  - by tvrtko

  I have to store e-mail messages for use with our application. I have "metadata" for all messages inside a relational database, but I don't feel comfortable keeping message content (gigabytes and terabytes of email data) inside a database. I'm currently using IMAP as a storage, but I have my doubts if I choose correctly. First of all there is a problem of uidvalidity and how to keep a permanent reference to message inside IMAP. Second, I'm not sure if this is the most robust solution in terms of backup/restore strategies, corruption of store, replication ... Positive side is that I can query IMAP using the headers because the data is mostly indexed. I don't know if key-value stores are a better approach (Casandra, Tokyo cabinet, redis). How they handle storing 1KB and 50MB of data. How they prevent corruption and when corruption or device failure happens how can I repair the store.

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• Using a password to generate two distinct hashes without reducing password security

  - by Nevins

  Hi there, I'm in the process of designing a web application that will require the storage of GPG keys in an encrypted format in a database. I'm planning on storing the user's password in a bCrypt hash in the database. What I would like to be able to do is to use that bCrypt to authenticate the user then use the combination of the stored bCrypt hash and another hash of the password to encrypt and decrypt the GPG keys. My question is whether I can do this without reducing the security of the password? I was thinking I may be able to use something like an HMAC-SHA256 of a static string using the password and a salt as the secret key. Is there a better way to do this that I haven't thought of? Thanks

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• How can i store data in C in a tabular format?

  - by aks

  Hi, I want to store data in C in tabular format. I am having difficulty in relating the following. Can someone help? For example: I want to store the follwong entries, then what should be the ideal way of storing in C? IP Address Domain Name 1.) 10.1.1.2 www.yahoo.com 2.) 20.1.1.3 www.google.com Should i use structures? Say for example? struct table { unsigned char ip address; char domain_name[20]; }; If not, please clarify?

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• How to approach local database management via Flex/Air App

  - by Damon

  I am planning on using Flash Builder 4/Flex to write an AIR application which is primarily based around recording, storing and analyzing data. I'll be creating charts etc that need to update in almost real time. It's essential to me that the application be able to function without an internet connection so I need a local database of some variety, but I would also eventually like to build in online synchronization of the data where either database can be update each other based on newer information. Moreover, some type of encryption would definitely be welcome, and speed is a large concern With all that in mind, what is my best approach to try and avoid headaches down the road?

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• Wanna use StructureMap to store HttpContext/User based explicit instances

  - by René

  Hi I'm having difficulty figuring out how to store an explicitly user generated instance in StructureMap, cached by HttpContext. When I try the code underneath, I even get the first cached instance, which leads to failures when using it for storing user credentials in Asp.Net AuthenticateRequest method. ForRequestedType<TInterface>() .CacheBy(InstanceScope.HttpContext) .TheDefault. Is. Object(instance)); The problem is I can't create a new instance on requesting StructureMap, because I need more other factories for getting rights etc. for the current user. Any ideas?

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• INET_ATON() and INET_NTOA() in PHP?

  - by blerh

  I want to store IP addresses in my database, but I also need to use them throughout my application. I read about using INET_ATON() and INET_NTOA() in my MySQL queries to get a 32-bit unsigned integer out of an IP address, which is exactly what I want as it will make searching through the database faster than using char(15). The thing is, I can't find a function that does the same sort of thing in PHP. The only thing I came across is: http://php.net/manual/en/function.ip2long.php So I tested it: $ip = $_SERVER['REMOTE_ADDR']; echo ip2long($ip); And it outputs nothing. In the example they gave it seems to work, but then again I'm not exactly sure if ip2long() does the same thing as INET_ATON(). Does someone know a PHP function that will do this? Or even a completely new solution to storing an IP address in a database? Thanks.

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• OOP App Architecture: Which layer does a lazy loader sit in?

  - by JW

  I am planning the implemention an Inheritance Mapper pattern for an application component http://martinfowler.com/eaaCatalog/inheritanceMappers.html One feature it needs to have is for a domain object to reference a large list of aggreageted items (10,000 other domain objects) So I need some kind of lazy loading collection to be passed out of the aggregate root domain object to other domain objects. To keep my (php) model scripts organised i am storing them in two folders: MyComponent\ controllers\ models\ domain\ <- domain objects, DDD repository, DDD factory daccess\ <- PoEAA data mappers, SQL queries etc views\ But now I am racking my brains wondering where my lazy loading collection sits. Any suggestions / justifications for putting it in one place over another another? DDD = Domain Driven Design Patterns, Eric Evans - book PoEAA = Patterns of Application Architecture Patterns, Martin Fowler - book

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• Efficient persistent storage for simple id to table of values map for java

  - by wds

  I need to store some data that follows the simple pattern of mapping an "id" to a full table (with multiple rows) of several columns (i.e. some integer values [u, v, w]). The size of one of these tables would be a couple of KB. Basically what I need is to store a persistent cache of some intermediary results. This could quite easily be implemented as simple sql, but there's a couple of problems, namely I need to compress the size of this structure on disk as much as possible. (because of amount of values I'm storing) Also, it's not transactional, I just need to write once and simply read the contents of the entire table, so a relational DB isn't actually a very good fit. I was wondering if anyone had any good suggestions? For some reason I can't seem to come up with something decent atm. Especially something with an API in java would be nice.

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• POS Desktop Application using DB or Localfiles ? using WPF

  - by Panindra

  I am planning to build a POS Application for my shop. I have enough knowledge to build the application using DB and also using local files( system.IO - binary files ) to store and access the data for my application. But , i have no deployment experience and confused in choosing data storing option. Database using MDF may be good option ( may ease plenty of coding ) but i don't want to have SQL server on my desktop. as i am using WPF for building , my concern is that my application may get slow due to server response and design rendering of WPF. Then i tried to use only local data (binary files) to store the data and retrive using class and objects. but this coding is taking lot of time , so in the middle of the process i struck in the dilemma of going back to Database . Please help , for performance wise whic one is better . and in Practical World ,in professional applications which one is widely using .. please give suggestions ..

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• Which collation should I use to store these country names in MySQL?

  - by morpheous

  I am trying to store a list of countries in a mySQL database. I am having problems storing (non English) names like these: São Tomé and Príncipe República de El Salvador They are stored with strange characters in the db, (and therefore output strangely in my HTML pages). I have tried using different combinations of collations for the database and the MySQL connection collation: The "obvious" setting was to use utf8_unicode_ci for both the databse and the connection information. To my utter surprise, that did not solve the problem. Does anyone know how to resolve this issue?

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• Return number of objects in NSArray

  - by Viral

  hi friends I am making a book application, in that for moving to next topic i am keeping a button. The Button works as it passes to the next topic , but at the end of the file my application gets message obj_fatal and it crashes. So if i can know that how many number of objects are there in my array(NSARRAY)den the problem will be solved. I am getting the details from a .plist file and storing it in to a array. So if any one know it please let me know. Thanks in advance. Viral.

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• Combining Session and Cache

  - by Zyphrax

  To make my extranet web application even faster/more scalable I think of using some of the caching mechanisms. For some of the pages we'll use HTML caching, please ignore that technique for this question. E.g.: at some point in time 2500 managers will simultaneously login on our application (most of them with the same Account/Project) I think of storing an Account-cachekey and Project-cachekey into the user's Session and use that to get the item from the Cache. I could have simply stored the Account into the session, but that would result in 2500 of the same Accounts in memory. Is there a better solution to this or does it make sense :)?

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• How can I request local pages in the background of an ASP.NET MVC app?

  - by flipdoubt

  My ASP.NET MVC app needs to run a set of tasks at startup and in the background at a regular interval. I have implemented each task as a controller action and listed the app-relative path to the action in the database. I implemented a TaskRunner process that gets the urls from the database and requests each one at a regular interval using WebRequest.Create, but this throws a UriFormatException. I cannot use this answer or any code that plucks values from HttpContext.Current.Request without getting an HttpException with the message "Request is not available in this context". The Request object is not available because my code uses System.Threading.Timer to do background processing, as recommended here. Here are my questions: Is there really no way to make local web requests within an ASP.NET web app? Is there really no way to dynamically ascertain the root path to the web app even using static dependencies in ASP.NET? I was trying to avoid storing the app's root path in the database (as FogBugz does with its "Maintenance Path"), but is this best option?

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