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  • Email notification and mail server

    - by Jerr Wu
    I am building a web application with email notification just like Facebook, which will host in http://www.linode.com/. When a user A comment to a post, the poster will get an email notification from '[email protected]' with the comment message written by user A. (Not spam) I really like Google Apps but they have sending limits 2000 sending per day, that is not suit for my case becuz I cannot have sending limits. There will be many email notifications. http://support.google.com/a/bin/answer.py?hl=en&answer=166852 I also need company email accounts for team members use which I prefer Google Apps. My web application will host in linode, I am considering "Amazon Simple Notification Service" for the email notification. My questions are Any other recommend email service provider suits my case for me? Can I bind company email accounts(ex: [email protected]) with Google Apps and bind [email protected] with other email service provider?

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  • How does MTOM work + sample code

    - by zengr
    I am trying to make a very simple web-service which does the following: The client hits the web service requesting a file. The web service's service class queries a hashtable which has the key (search query) and the value as the base64encoded value of a file (say a pdf) Now,I need to use MTOM to return the base64encoded value stored in the hashtable to the client. It's upto the client to decode it and convert it to pdf. So, here are my questions: I understand we encode files to base64 for transmission via web service, but where and how does MTOM come into the picture there? Can some one provide me a simple method which uses MTOM and sends the data back. Do we need to specify something in the WSDL too? or a simple String return type would suffice? Why/Why not? Thanks I have seen this code. It uses a lot of annotations, I just need a simple java code using MTOM. New to J2EE HERE :)

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  • Restricting dynamically loaded classes and jars based on a security policy

    - by Max
    Hi, I would like to dynamically load a set of jars or classes (i.e. plugins loaded at runtime). At the same time, I would like to restrict what these plugins are able to do in the JVM. For a test case, I would like to restrict them to pretty much everything (right now I'm just allowing one System.getProperty value to be read). I am currently using a security policy file, but I'm having difficulty specifying a policy for one folder or package in my codeBase, but not another. Here is how my policy looks now: grant codeBase "file:/home/max/programming/java/plugin/plugins/" { permission java.util.PropertyPermission "java.version", "read"; }; grant codeBase "file:/home/max/programming/java/plugin/api/" { permission java.security.AllPermission; }; Where (for testing purposes), all files in the plugins package and folder are restricted, but the classes in the api folder are not. Is this possible? Do I have to create a custom class loader? Is there a better way to go about doing this? Thanks.

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  • SQL Stored Queries - use result of query as boolean based on existence of records

    - by Christian Mann
    Just getting into SQL stored queries right now... anyway, here's my database schema (simplified for YOUR convenience): member ------ id INT PK board ------ id INT PK officer ------ id INT PK If you're into OOP, Officer Inherits Board Inherits Member. In other words, if someone is listed on the officer table, s/he is listed on the board table and the member table. I want to find out the highest privilege level someone has. So far my SP looks like this: DELIMITER // CREATE PROCEDURE GetAuthLevel(IN targetID MEDIUMINT) BEGIN IF SELECT `id` FROM `member` WHERE `id` = targetID; THEN IF SELECT `id` FROM `board` WHERE `id` = targetID; THEN IF SELECT `id` FROM `officer` WHERE `id` = targetID; THEN RETURN 3; /*officer*/ ELSE RETURN 2; /*board member*/ ELSE RETURN 1; /*general member*/ ELSE RETURN 0; /*not a member*/ END // DELIMITER ; The exact text of the error is #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT id FROM member WHERE id = targetID; THEN IF SEL' at line 4 I suspect the issue is in the arguments for the IF blocks. What I want to do is return true if the result-set is at least one -- i.e. the id was found in the table. Do any of you guys see anything to do here, or should I reconsider my database design into this:? person ------ id INT PK level SMALLINT

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  • Why would a server not send a SYN/ACK packet in response to a SYN packet

    - by codemonkey
    Lately, we've become aware of a TCP connection issue that is mostly limited to mac and Linux users who browse our websites. From the user perspective, it presents itself as a really long connection time to our websites (11 seconds). We've managed to track down the technical signature of this problem, but can't figure out why it is happening or how to fix it. Basically, what is happening is that the client's machine is sending the SYN packet to establish the TCP connection and the web server receives it, but does not respond with the SYN/ACK packet. After the client has sent many SYN packets, the server finally responds with a SYN/ACK packet and everything is fine for the remainder of the connection. And, of course, the kicker to the problem: it is intermittent and does not happen all the time (though it does happen between 10-30% of the time) We are using Fedora 12 Linux as the OS and Nginx as the web server.

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  • web.go install error

    - by Metropolis
    Hey Everyone, I am trying to install web.go using goinstall github.com/hoisie/web.go, and I keep getting an error about the path. goinstall: github.com/hoisie/web.go: git: no such file or directory goinstall is working for sure because when I type in just goinstall I get the options list for it. Any ideas on what I am doing wrong? Metropolis

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  • Lightweight PHP5 based template class/system

    - by Wizzard
    Hi there. Looking at using a template system for a new project, it's only a small site and don't want to use the overhead and 'complexity' of smarty. I don't really like template systems that force you to make use of another language just to make it easier for designers (apparently). Something like this http://www.namepros.com/code/517342-php5-template-class.html is what Im looking at but something which is a bit more robust and proven.

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  • c# Deserializing an element based on it's parent node's name

    - by daveharnett
    The XML I'm working with has the following structure: <fixture_statistics> <home_player_1 id="2306143" teamid="2"> <element_1>Some Data</element_1> <element_2>Some Data</element_2> </home_player_1> <home_player_2 id="2306144" teamid="2"> <element_1>Some Data</element_1> <element_2>Some Data</element_2> </home_player_2> </fixture_statistics> Now the code to deserialize it would normally look like this: [XmlRootAttribute("fixture_statistics", Namespace = "", IsNullable = false)] public class FixtureRoot { [XmlElement("home_player_1")] [XmlElement("home_player_2")] public List<FixtureStats> fixtures { get; set; } } public class FixtureStats { public string element_1; [XMLElement("element_2")] public string elementTwo; } Here's the question: I'd like the FixtureStats class to have a 'position' property which corrosponds to it's parent's element name (so the FixtureStat object corrosponding to home_player_1 would have position=1). Can this be done with the built-in serialization atrributes? If it's not possible, what's the cleanest workaround? Bear in mind that each document will have about 50 player elements, each with about 50 'child' data elements.

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  • How can I block based on URL (from address bar) in a safari extension

    - by PerilousApricot
    I'm trying to write an extension that will block access to (configurable) list of URLs if they are accessed more than N times per hour. From what I understand, I need to have a start script pass a "should I load this" message to a global HTML page (who can access the settings object to get the list of URLs), who will give a thumbs up/thumbs down message back to the start script to deny/allow loading. That works out fine for me, but when I use the usual beforeLoad/canLoad handlers, I get messages for all the sub-items that need to be loaded (images/etc..), which screws up the #accesses/hour limit I'm trying to make. Is there a way to synchronously pass messages back and forth between the two sandboxes so I can tell the global HTML page, "this is the URL in the window bar and the timestamp for when this request came in", so I can limit duplicate requests? Thanks!

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  • update variable based upon results from .NET backgroundworker

    - by Bruce
    I've got a C# program that talks to an instrument (spectrum analyzer) over a network. I need to be able to change a large number of parameters in the instrument and read them back into my program. I want to use backgroundworker to do the actual talking to the instrument so that UI performance doesn't suffer. The way this works is - 1) send command to the instrument with new parameter value, 2) read parameter back from the instrument so I can see what actually happened (for example, I try to set the center frequency above the max that the instrument will handle and it tells me what it will actually handle), and 3) update a program variable with the actual value received from the instrument. Because there are quite a few parameters to be updated I'd like to use a generic routine. The part I can't seem to get my brain around is updating the variable in my code with what comes back from the instrument via backgroundworker. If I used a separate RunWorkerCompleted event for each parameter I could hardwire the update directly to the variable. I'd like to come up with a way of using a single routine that's capable of updating any of the variables. All I can come up with is passing a reference number (different for each parameter) and using a switch statement in the RunWorkerCompleted handler to direct the result. There has to be a better way.

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  • Network communication for a turn based board game

    - by randooom
    Hi all, my first question here, so please don't be to harsh if something went wrong :) I'm currently a CS student (from Germany, if this info is of any use ;) ) and we got a, free selectable, programming assignment, which we have to write in a C++/CLI Windows Forms Application. My team, two others and me, decided to go for a network-compatible port of the board game Risk. We divided the work in 3 Parts, namely UI, game logic and network. Now we're on the part where we have to get everything working together and the big question mark is, how to get the clients synchronized with each other? Our approach so far is, that each client has all information necessary to calculate and/or execute all possible actions. Actually the clients have all information available at all, aside from the game-initializing phase (add players, select map, etc.), which needs one "super-client" with some extra stuff to control things. This is the standard scenario of our approach: player performs action, the action is valid and got executed on the players client action is sent over the network action is executed on the other clients The design (i.e. no or code so far) we came up with so far, is something like the following pseudo sequence diagram. Gui, Controller and Network implement all possible actions (i.e. all actions which change data) as methods from an interface. So each part can implement the method in a way to get their job done. Example with Action(): On the player side's Client: Player-->Gui.Action() Gui-->Controller.Action() Controller-->Logic.Action (Logic.Action() == NoError)? Controller-->Network.Action() Network-->Parser.ParseAction() Network.Send(msg) On all other clients: Network.Recv(msg) Network-->Parser.Deparse(msg) Parser-->Logic.Action() Logic-->Gui.Action() The questions: Is this a viable approach to our task? Any better/easier way to this? Recommendations, critique? Our knowledge (so you can better target your answer): We are on the beginner side, in regards to programming on a somewhat larger projects with a small team. All of us have some general programming experience and basic understanding of the .Net Libraries and Windows Forms. If you need any further information, please feel free to ask.

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  • NoSQL DB for .Net document-based database (ECM)

    - by Dane
    I'm halfway through coding a basic multi-tenant SaaS ECM solution. Each client has it's own instance of the database / datastore, but the .Net app is single instance. The documents are pretty much read only (i.e. an image archive of tiffs or PDFs) I've used MSSQL so far, but then started thinking this might be viable in a NoSQL DB (e.g. MongoDB, CouchDB). The basic premise is that it stores documents, each with their own particular indexes. Each tenant can have multiple document types. e.g. One tenant might have an invoice type, which has Customer ID, Invoice Number and Invoice Date. Another tenant might have an application form, which has Member Number, Application Number, Member Name, and Application Date. So far I've used the old method which Sharepoint (used?) to use, and created a document table which has int_field_1, int_field_2, date_field_1, date_field_2, etc. Then, I've got a "mapping" table which stores the customer specific index name, and the database field that will map to. I've avoided the key-value pair model in the DB due to volume of documents. This way, we can support multiple document types in the one table, and get reasonably high performance out of it, and allow for custom document type searches (i.e. user selects a document type, then they're presented with a list of search fields). However, a NoSQL DB might make this a lot simpler, as I don't need to worry about denormalizing the document. However, I've just got concerns about the rest of the data around a document. We store an "action history" against the document. This tracks views, whether someone emails the document from within the system, and other "future" functionality (e.g. faxing). We have control over the document load process, so we can manipulate the data however it needs to be to get it in the document store (e.g. assign unique IDs). Users will not be adding in their own documents, so we shouldn't need to worry about ACID compliance, as the documents are relatively static. So, my questions I guess : Is a NoSQL DB a good fit Is MongoDB the best for Asp.Net (I saw Raven and Velocity, but they're still kinda beta) Can I store a key for each document, and then store the action history in a MSSQL DB with this key? I don't need to do joins, it would be if a person clicks "View History" against a document. How would performance compare between the two (NoSQL DB vs denormalized "document" table) Volumes would be up to 200,000 new documents per month for a single tenant. My current scaling plan with the SQL DB involves moving the SQL DB into a cluster when certain thresholds are reached, and then reviewing partitioning and indexing structures.

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  • Rx: Piecing together multiple IObservable web requests

    - by McLovin
    Hello, I'm creating multiple asynchronous web requests using IObservables and reactive extensions. So this creates observable for "GET" web request: var tweetObservalue = from request in WebRequestExtensions.CreateWebRequest(outUrl + querystring, method) from response in request.GetResponseAsync() let responseStream = response.GetResponseStream() let reader = new StreamReader(responseStream) select reader.ReadToEnd(); And I can do tweetObservable.Subscribe(response => dosomethingwithresponse(response)); What is the correct way of executing multiple asynchronous web requests with IObservables and LINQ that have to wait until other requests have been finished? For example first I would like to verify user info: create userInfoObservable, then if user info is correct I want to update stats so I get updateStatusObservable then if status is updated I would like create friendshipObservable and so on. Also bonus question, there is a case where I would like to execute web calls simultaneously and when all are finished execute another observable which will until other calls are finished. Thank you.

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  • Change value of jquery variable based on a select box

    - by Nikos
    I have a jquery datepicker script and what I want to do is to change "minDate: 10" value by a select box. $(function() { $('#hotel').change(function() { // assign the value to a variable, so you can test to see if it is working var selectVal = $('#hotel :selected').val(); if( selectVal == "hotel_c" ) { var date = 10; } if( selectVal == "hotel_a" ) { var date = 15; } if( selectVal == "hotel_b" ) { var date = 6; } }); var dates = $('#from, #to').datepicker({ defaultDate: "+1w", changeMonth: true, dateFormat: 'yy-m-d', minDate: 10, numberOfMonths: 3, onSelect: function(selectedDate) { var option = this.id == "from" ? "minDate" : "maxDate"; var instance = $(this).data("datepicker"); var date = $.datepicker.parseDate(instance.settings.dateFormat || $.datepicker._defaults.dateFormat, selectedDate, instance.settings); dates.not(this).datepicker("option", option, date); } }); });

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  • In python, changing MySQL query based on function variables

    - by ensnare
    I'd like to be able to add a restriction to the query if user_id != None ... for example: "AND user_id = 5" but I am not sure how to add this into the below function? Thank you. def get(id, user_id=None): query = """SELECT * FROM USERS WHERE text LIKE %s AND id = %s """ values = (search_text, id) results = DB.get(query, values) This way I can call: get(5) get(5,103524234) (contains user_id restriction)

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  • WPF Visibility of a UI element based on combo selection

    - by tim
    Trying to show a label only when a certain item in a combo is selected. Code should pretty much explain it. <ComboBox Name="comboMyCombo"> <ComboBoxItem>Don't show the label</ComboBoxItem> <ComboBoxItem>Show the label</ComboBoxItem> </ComboBox> <Label Visibility="Collapsed">This is my label <Label.Style> <Style> <Style.Triggers> <DataTrigger Binding="{Binding ElementName=comboMyCombo, Path=SelectedValue}" Value="Show the label"> <Setter Property="Label.Visibility" Value="Visible"></Setter> </DataTrigger> </Style.Triggers> </Style> </Label.Style> </Label>

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  • Making a module based social networking cms

    - by Manan
    What does it take to create a social networking cms like phpfox or socialengine . I am interested in using php / mysql . However , I want it to be modular , like above examples . Like I can enable disable videos from backend . Most important , it should have ability to allow others to extend it , like facebook applications . Should I follow a framework [ cakephp or something ]? Should I use some pattern [ factory or singleton ] ? Is there any book available on subject ?

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  • Query optimization (OR based)

    - by john194
    I have googled but I can't find answers for these questions. Your advice is appreciated. centOS on vps with 512MB RAM, nginx, php5 (fastcgi), mysql5 (myisam, not innodb). I need to optimize this app created by some ex-employee. This app is working, but it's slow. Table: t1(id[bigint(20)],c1[mediumtext],c2[mediumtext],c3[mediumtext],c4[mediumtext]) id is some random big number, and is PK Those mediumtext rows look like this: c1="|box-002877|" c2="|ct-2348|rd-11124854|hw-3949|wd-8872|hw-119037736|...etc.. " c3="|fg-2448|wd-11172|hw-1656|...etc.. " c4="|hg-2448|qd-16667|...etc." (some columns contain a lot of data, around 900 KiB, database around 300 MiB) Yes, mediumtext "is bad", and (20) is too big... but I didn't create this. Those codes can be found on any of those 4 mediumtext's... //he needs all the columns of the row containing $code, so he wrote this: function f1($code) { SELECT * FROM t1 WHERE c1 LIKE '%$code%' OR c2 LIKE '%$code%' OR c3 LIKE '%$code%' OR c4 LIKE '%$code%'; Questions: Q1. If $code is found on c1... mysql automatically stops checking and returns row=id+c1+c2+c3+c4? or it will continue (wasting time) checking c2, c3 and c4?... Q2. Mysql is working with this table on disk (not RAM) because of the mediumtext, right? is this the primary cause of slowness? Q3. That query can be cached by mysql (if using a big query_cache_size=128M value on the my.cnf)? or that's not cacheable due to the mediumtexts, or due to the "OR LIKE"...? Q4. Do you recommend rewriting this with mysql's INSTR() / LOCATE() / MATCH..AGAINST [FULLTEXT]?

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  • Creating a QuerySet based on a ManyToManyField in Django

    - by River Tam
    So I've got two classes; Picture and Tag that are as follows: class Tag(models.Model): pics = models.ManyToManyField('Picture', blank=True) name = models.CharField(max_length=30) # stuff omitted class Picture(models.Model): name = models.CharField(max_length=100) pub_date = models.DateTimeField('date published') tags = models.ManyToManyField('Tag', blank=True) content = models.ImageField(upload_to='instaton') #stuff omitted And what I'd like to do is get a queryset (for a ListView) given a tag name that contains the most recent X number of Pictures that are tagged as such. I've looked up very similar problems, but none of the responses make any sense to me at all. How would I go about creating this queryset?

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  • Windows 2008 Incoming Connection: Where/How is Server IPv4 address defined

    - by revelate
    We're evaluating a VM hosted externally which runs Windows Server 2008 R2 Web Server Edition and wish to access it via a VPN connection for maintenance and administration. RRAS isn't included in Web Server Edition, but it does have a form of VPN server called "Incoming Connections". This appears to work well and even supports multiple simultaneous connections. As we'll be using this VPN regularly we'd like to know if this is a viable solution or if we'd be better off upgrading to Standard Edition and full-fledged RRAS. In particular we're accessing the VM via the Private IP given by the Incoming Connection (currently 169.254.135.207) so we'd like know: if the server private IP might change every so often? if so is there any way to define it manually? or should we be using the server name rather than the private IP address? if so how can we be sure that it will resolve correctly? Name resolution over the "Incoming Connection" has worked on and off during our tests. Thanks for your help

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  • Gtk Based Graph

    - by paultop6
    Hi Guys, Bit of a general question here, i want to be able to make a line graph using GTK but im unsure how to approach this... Has anyone got any hints or tips? Regards Paul

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  • Calculate # of Rowspans and Colspans based on keys in a Multi-Array

    - by sologhost
    Ok, I have these 2 types of layouts, basically, it can be any layout really. I have decided to use tables for this, since using div tags cause undesirable results in some possible layout types. Here are 2 pics that describe the returned results of row and column: This would return the $layout array like so: $layout[0][0] $layout[0][1] $layout[1][1] In this layout type: $layout[1][0] is NOT SET, or doesn't exist. Row 1, Column 0 doesn't exist in here. So how can we use this to help us determine the rowspans...? Ok, this layout type would now return the following: $layout[0][0] $layout[0][1] $layout[1][0] $layout[2][0] $layout[2][1] $layout[3][1] Again, there are some that are NOT SET in here: $layout[1][1] $layout[3][0] Ok, I have an array called $layout that does a foreach on the row and column, but it doesn't grab the rows and columns that are NOT SET. So I created a for loop (with the correct counts of how many rows there are and how many columns there are). Here's what I got so far: // $not_set = array(); for($x = 0; $x < $cols; $x++) { $f = 0; for($p = 0; $p < $rows; $p++) { // $f = count($layout[$p]); if(!isset($layout[$p][$x])) { $f++; // It could be a rowspan or a Colspan... // We need to figure out which 1 it is! /* $not_set[] = array( 'row' => $p, 'column' => $x, ); */ } // if ($rows - count($layout[$p])) } } Ok, the $layout array has 2 keys. The first 1 is [ row ] and the 2nd key is [ column ]. Now looping through them all and determining whether it's NOT SET, tells me that either a rowspan or a colspan needs to be put into something somewhere. I'm completely lost here. Basically, I would like to have an array returned here, something like this: $spans['row'][ row # ][ column # ] = Number of rowspans for that <td> element. $spans['column'][ row # ][ column # ] = Number of colspans for that <td> element. It's either going to need a colspan or a rowspan, it will definitely never need both for the same element. Am I going about this whole thing the wrong way? Any help at all would be greatly appreciated!! I've been driving myself crazy with this for days! Pllleaase...

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  • looking for php-based image viewer / browser

    - by stereofrog
    (don't know if this better belongs to SU/SF, feel free to move if so) Hi, I've got a directory with 1000+ subfolders full with hi-res images. I'm looking for php software that would allow me to explore it server-side: browse folders - preview images - download hi-res. NB: support for print formats (tiff, eps) is a must!

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