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• Big Data – Basics of Big Data Analytics – Day 18 of 21

  - by Pinal Dave

  In yesterday’s blog post we learned the importance of the various components in Big Data Story. In this article we will understand what are the various analytics tasks we try to achieve with the Big Data and the list of the important tools in Big Data Story. When you have plenty of the data around you what is the first thing which comes to your mind? “What do all these data means?” Exactly – the same thought comes to my mind as well. I always wanted to know what all the data means and what meaningful information I can receive out of it. Most of the Big Data projects are built to retrieve various intelligence all this data contains within it. Let us take example of Facebook. When I look at my friends list of Facebook, I always want to ask many questions such as - On which date my maximum friends have a birthday? What is the most favorite film of my most of the friends so I can talk about it and engage them? What is the most liked placed to travel my friends? Which is the most disliked cousin for my friends in India and USA so when they travel, I do not take them there. There are many more questions I can think of. This illustrates that how important it is to have analysis of Big Data. Here are few of the kind of analysis listed which you can use with Big Data. Slicing and Dicing: This means breaking down your data into smaller set and understanding them one set at a time. This also helps to present various information in a variety of different user digestible ways. For example if you have data related to movies, you can use different slide and dice data in various formats like actors, movie length etc. Real Time Monitoring: This is very crucial in social media when there are any events happening and you wanted to measure the impact at the time when the event is happening. For example, if you are using twitter when there is a football match, you can watch what fans are talking about football match on twitter when the event is happening. Anomaly Predication and Modeling: If the business is running normal it is alright but if there are signs of trouble, everyone wants to know them early on the hand. Big Data analysis of various patterns can be very much helpful to predict future. Though it may not be always accurate but certain hints and signals can be very helpful. For example, lots of data can help conclude that if there is lots of rain it can increase the sell of umbrella. Text and Unstructured Data Analysis: unstructured data are now getting norm in the new world and they are a big part of the Big Data revolution. It is very important that we Extract, Transform and Load the unstructured data and make meaningful data out of it. For example, analysis of lots of images, one can predict that people like to use certain colors in certain months in their cloths. Big Data Analytics Solutions There are many different Big Data Analystics Solutions out in the market. It is impossible to list all of them so I will list a few of them over here. Tableau – This has to be one of the most popular visualization tools out in the big data market. SAS – A high performance analytics and infrastructure company IBM and Oracle – They have a range of tools for Big Data Analysis Tomorrow In tomorrow’s blog post we will discuss about very important components of the Big Data Ecosystem – Data Scientist. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• MVC Portable Areas &ndash; Deploying Static Files

  - by Steve Michelotti

  This is the second post in a series related to build and deployment considerations as I’ve been exploring MVC Portable Areas: #1 – Using Web Application Project to build portable areas #2 – Conventions for deploying portable area static files #3 – Portable area static files as embedded resources As I’ve been digging more into portable areas, one of the things I’ve liked best is the deployment story which enables my *.aspx, *.ascx pages to be compiled into the assembly as embedded resources rather than having to maintain all those files separately. In traditional web forms, that was always the thing to prevented developers from utilizing *.ascx user controls across projects (see this post for using portable areas in web forms).  However, though the aspx pages are embedded, the supporting static files (e.g., images, css, javascript) are *not*. Most of the demos available online today tend to brush over this issue and focus solely on the aspx side of things. But to create truly robust portable areas, it’s important to have a good story for these supporting files as well.  I’ve been working with two different approaches so far (of course I’d really like to hear if other people are using alternatives). Scenario For the approaches below, the scenario really isn’t that important. It could be something as trivial as this partial view: 1: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %> 2: <img src="<%: Url.Content("~/images/arrow.gif") %>" /> Hello World! The point is that there needs to be careful consideration for *any* scenario that links to an external file such as an image, *.css, *.js, etc. In the example shown above, it uses the Url.Content() method to convert to a relative path. But this method won’t necessary work depending on how you deploy your portable area. One approach to address this issue is to build your portable area project with MSDeploy/WebDeploy so that it is packaged properly before incorporating into the host application. All of the *.cs files are removed and the project is ready for xcopy deployment – however, I do *not* need the “Views” folder since all of the mark up has been compiled into the assembly as embedded resources. Now in the host application we create a folder called “Modules” and deploy any portable areas as sub-folders under that: At this point we can add a simple assembly reference to the Widget1.dll sitting in the Modules\Widget1\bin folder. I can now render the portable image in my view like any other portable area. However, the problem with that is that the view results in this:   It couldn’t find arrow.gif because it looked for /images/arrow.gif and it was *actually* located at /images/Modules/Widget1/images/arrow.gif. One solution is to make the physical location of the portable configurable from the perspective of the host like this: 1: <appSettings> 2: <add key="Widget1" value="Modules\Widget1"/> 3: </appSettings> Using the <appSettings> section is a little cheesy but it could be better formalized into its own section. In fact, if were you willing to rely on conventions (e.g., “Modules\{areaName}”) then then config could be eliminated completely. With this config in place, we could create our own Html helper method called Url.AreaContent() that “wraps” the OOTB Url.Content() method while simply pre-pending the area location path: 1: public static string AreaContent(this UrlHelper urlHelper, string contentPath) 2: { 3: var areaName = (string)urlHelper.RequestContext.RouteData.DataTokens["area"]; 4: var areaPath = (string)ConfigurationManager.AppSettings[areaName]; 5:   6: return urlHelper.Content("~/" + areaPath + "/" + contentPath); With these two items in place, we just change our Url.Content() call to Url.AreaContent() like this: 1: <img src="<%: Url.AreaContent("/images/arrow.gif") %>" /> Hello World! and the arrow.gif now renders correctly:     Since we’re just using our own Url.AreaContent() rather than the built-in Url.Content(), this solution works for images, *.css, *.js, or any externally referenced files.  Additionally, any images referenced inside a css file will work provided it’s a relative reference and not an absolute reference. An alternative to this approach is to build the static file into the assembly as embedded resources themselves. I’ll explore this in another post (linked at the top).

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• Big Data – How to become a Data Scientist and Learn Data Science? – Day 19 of 21

  - by Pinal Dave

  In yesterday’s blog post we learned the importance of the analytics in Big Data Story. In this article we will understand how to become a Data Scientist for Big Data Story. Data Scientist is a new buzz word, everyone seems to be wanting to become Data Scientist. Let us go over a few key topics related to Data Scientist in this blog post. First of all we will understand what is a Data Scientist. In the new world of Big Data, I see pretty much everyone wants to become Data Scientist and there are lots of people I have already met who claims that they are Data Scientist. When I ask what is their role, I have got a wide variety of answers. What is Data Scientist? Data scientists are the experts who understand various aspects of the business and know how to strategies data to achieve the business goals. They should have a solid foundation of various data algorithms, modeling and statistics methodology. What do Data Scientists do? Data scientists understand the data very well. They just go beyond the regular data algorithms and builds interesting trends from available data. They innovate and resurrect the entire new meaning from the existing data. They are artists in disguise of computer analyst. They look at the data traditionally as well as explore various new ways to look at the data. Data Scientists do not wait to build their solutions from existing data. They think creatively, they think before the data has entered into the system. Data Scientists are visionary experts who understands the business needs and plan ahead of the time, this tremendously help to build solutions at rapid speed. Besides being data expert, the major quality of Data Scientists is “curiosity”. They always wonder about what more they can get from their existing data and how to get maximum out of future incoming data. Data Scientists do wonders with the data, which goes beyond the job descriptions of Data Analysist or Business Analysist. Skills Required for Data Scientists Here are few of the skills a Data Scientist must have. Expert level skills with statistical tools like SAS, Excel, R etc. Understanding Mathematical Models Hands-on with Visualization Tools like Tableau, PowerPivots, D3. j’s etc. Analytical skills to understand business needs Communication skills On the technology front any Data Scientists should know underlying technologies like (Hadoop, Cloudera) as well as their entire ecosystem (programming language, analysis and visualization tools etc.) . Remember that for becoming a successful Data Scientist one require have par excellent skills, just having a degree in a relevant education field will not suffice. Final Note Data Scientists is indeed very exciting job profile. As per research there are not enough Data Scientists in the world to handle the current data explosion. In near future Data is going to expand exponentially, and the need of the Data Scientists will increase along with it. It is indeed the job one should focus if you like data and science of statistics. Courtesy: emc Tomorrow In tomorrow’s blog post we will discuss about various Big Data Learning resources. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Big Data – Operational Databases Supporting Big Data – Columnar, Graph and Spatial Database – Day 14 of 21

  - by Pinal Dave

  In yesterday’s blog post we learned the importance of the Key-Value Pair Databases and Document Databases in the Big Data Story. In this article we will understand the role of Columnar, Graph and Spatial Database supporting Big Data Story. Now we will see a few of the examples of the operational databases. Relational Databases (The day before yesterday’s post) NoSQL Databases (The day before yesterday’s post) Key-Value Pair Databases (Yesterday’s post) Document Databases (Yesterday’s post) Columnar Databases (Tomorrow’s post) Graph Databases (Today’s post) Spatial Databases (Today’s post) Columnar Databases  Relational Database is a row store database or a row oriented database. Columnar databases are column oriented or column store databases. As we discussed earlier in Big Data we have different kinds of data and we need to store different kinds of data in the database. When we have columnar database it is very easy to do so as we can just add a new column to the columnar database. HBase is one of the most popular columnar databases. It uses Hadoop file system and MapReduce for its core data storage. However, remember this is not a good solution for every application. This is particularly good for the database where there is high volume incremental data is gathered and processed. Graph Databases For a highly interconnected data it is suitable to use Graph Database. This database has node relationship structure. Nodes and relationships contain a Key Value Pair where data is stored. The major advantage of this database is that it supports faster navigation among various relationships. For example, Facebook uses a graph database to list and demonstrate various relationships between users. Neo4J is one of the most popular open source graph database. One of the major dis-advantage of the Graph Database is that it is not possible to self-reference (self joins in the RDBMS terms) and there might be real world scenarios where this might be required and graph database does not support it. Spatial Databases  We all use Foursquare, Google+ as well Facebook Check-ins for location aware check-ins. All the location aware applications figure out the position of the phone with the help of Global Positioning System (GPS). Think about it, so many different users at different location in the world and checking-in all together. Additionally, the applications now feature reach and users are demanding more and more information from them, for example like movies, coffee shop or places see. They are all running with the help of Spatial Databases. Spatial data are standardize by the Open Geospatial Consortium known as OGC. Spatial data helps answering many interesting questions like “Distance between two locations, area of interesting places etc.” When we think of it, it is very clear that handing spatial data and returning meaningful result is one big task when there are millions of users moving dynamically from one place to another place & requesting various spatial information. PostGIS/OpenGIS suite is very popular spatial database. It runs as a layer implementation on the RDBMS PostgreSQL. This makes it totally unique as it offers best from both the worlds. Courtesy: mushroom network Tomorrow In tomorrow’s blog post we will discuss about very important components of the Big Data Ecosystem – Hive. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Big Data – Interacting with Hadoop – What is Sqoop? – What is Zookeeper? – Day 17 of 21

  - by Pinal Dave

  In yesterday’s blog post we learned the importance of the Pig and Pig Latin in Big Data Story. In this article we will understand what is Sqoop and Zookeeper in Big Data Story. There are two most important components one should learn when learning about interacting with Hadoop – Sqoop and Zookper. What is Sqoop? Most of the business stores their data in RDBMS as well as other data warehouse solutions. They need a way to move data to the Hadoop system to do various processing and return it back to RDBMS from Hadoop system. The data movement can happen in real time or at various intervals in bulk. We need a tool which can help us move this data from SQL to Hadoop and from Hadoop to SQL. Sqoop (SQL to Hadoop) is such a tool which extract data from non-Hadoop data sources and transform them into the format which Hadoop can use it and later it loads them into HDFS. Essentially it is ETL tool where it Extracts, Transform and Load from SQL to Hadoop. The best part is that it also does extract data from Hadoop and loads them to Non-SQL (or RDBMS) data stores. Essentially, Sqoop is a command line tool which does SQL to Hadoop and Hadoop to SQL. It is a command line interpreter. It creates MapReduce job behinds the scene to import data from an external database to HDFS. It is very effective and easy to learn tool for nonprogrammers. What is Zookeeper? ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. In other words Zookeeper is a replicated synchronization service with eventual consistency. In simpler words – in Hadoop cluster there are many different nodes and one node is master. Let us assume that master node fails due to any reason. In this case, the role of the master node has to be transferred to a different node. The main role of the master node is managing the writers as that task requires persistence in order of writing. In this kind of scenario Zookeeper will assign new master node and make sure that Hadoop cluster performs without any glitch. Zookeeper is the Hadoop’s method of coordinating all the elements of these distributed systems. Here are few of the tasks which Zookeepr is responsible for. Zookeeper manages the entire workflow of starting and stopping various nodes in the Hadoop’s cluster. In Hadoop cluster when any processes need certain configuration to complete the task. Zookeeper makes sure that certain node gets necessary configuration consistently. In case of the master node fails, Zookeepr can assign new master node and make sure cluster works as expected. There many other tasks Zookeeper performance when it is about Hadoop cluster and communication. Basically without the help of Zookeeper it is not possible to design any new fault tolerant distributed application. Tomorrow In tomorrow’s blog post we will discuss about very important components of the Big Data Ecosystem – Big Data Analytics. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Oracle at HR Tech: What a Difference a Year Makes

  - by Natalia Rachelson

  Last week, I had the privilege of attending the famous HR Technology Conference (HR Tech) in my new hometown of Chicago. This annual event, which draws the who of who in the world of HR technology, was by far the biggest.  It wasn't just the highest level of attendance that was mind blowing, but also the amazing quality of attendees. Kudos go to the organizers, especially Bill Kutik for pulling together such a phenomenal conference. Conference highlights included Naomi Bloom's (http://infullbloom.us) Masters Panel and Mark Hurd's General Session on the last day of the conference. Naomi managed to do the seemingly impossible -- get all of the industry heavyweights and fierce competitors to travel to Chicago for her panel. Here are the executives she hosted: Our own Steve Miranda Sanjay Poonen, President Global Solutions, SAP Stan Swete, CTO, Workday Mike Capone, VP for Product Development and CIO, ADP John Wookey, EVP, Social Applications, Salesforce.com Adam Rogers, CTO, Ultimate Software       I bet you think "WOW" when you look at these names. Just this panel by itself would have been enough of a draw for any tech conference, so Naomi and Bill really scored. TechTarget published a great review of the conference here.  And here are a few highlights from Steve. "Steve Miranda, EVP Apps Dev Oracle, said delivering software in the cloud helps vendors shape their products to customer needs more efficiently. "As vendors, we're able to improve the software faster," he said. "We can see in real time what customers are using and not using." Miranda underscored Oracle's commitment to socializing its HCM platform,and named recruiting as an area where social has had a significant impact. "We want to make social a part of the fabric, not a separate piece," he said. "Already, if you're doing recruiting without social, it probably doesn't make any sense."" Having Mark Hurd at the conference was another real treat and everyone took notice.  The Business of HR publication covered Mark's participation at HR Tech and the full article is available here. Here is what Business of HR had to say: "In truth, the story of Oracle today is a story similar to many of the current and potential customers they faced at the conference this week. Their business is changing and growing. They've dealt with acquisitions of their own and their competitors continue to nip at their heels. They are dealing with growth (and yes, they are hiring in case you're interested). They have concerns about talent as well. If Oracle feels as strongly about their products as they seem to be, they will be getting their co-president in front of a lot more groups of current and potential customers like they did at the HR Technology Conference this year. And here's hoping this is one executive who won't stop talking about the importance of talent just because he isn't at the HR tech conference anymore." Natalia RachelsonSenior Director, Oracle Applications

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• Book Review (Book 12) - 20 Master Plots

  - by BuckWoody

  This is a continuation of the books I challenged myself to read to help my career - one a month, for a year. You can read my first book review here, and the entire list is here. The book I chose for May 2012 was:20 Master Plots by Ronald B. Tobias. This is my final book review - at least for this year. I'll explain what I've learned in this book in particular, and in the last twelve months in general. Why I chose this book: Stories and themes are part of software, presenting, and working in teams. This book claims there are only 20 plots, ever. I wanted to find out. What I learned: Probably my most favorite read of the year. Deceptively small, amazingly insightful. The premise is that there are only a few "base" themes, and that once you learn them you can put together an interesting set of stories on most any topic. Yes, the author admits that this number has been different throughout history - some have said 50, others 14, and still others claim only one or two basic plots. This doesn't change the fact that you can build very complex stories from a simple set of circumstances and characters. Be warned - if you read this book it takes away much of the wonder from almost every movie or book you'll read from here on! I loved it. My favorite part is that the author gives you exercises to build stories, right from the start. I've actually used these as the start of a meeting to foster creativity. Amazing stuff. One of my favorite sections of the book deals with plot and story. Plot: The king died, and the queen died. Story: The king died, and the queen died of heartbreak. Add one or two words, and you have the essence of storytelling. A highly recommended read, for all folks of all ages. You'll like it, your spouse will like it, and your kids will like it. I learned to be a better storyteller, and it helped me understand that plots and stories are not just things in books - they are a direct reflection of human nature. That makes me a better manager of myself and others.   And this is the last of the reviews - at least for this year. I probably won't post many more book reviews here, but I will keep up the practice. As a reminder, the goal was to select 12 books that will help you reach your career goals. They don't have to be technical, or even apply directly to your job - but they do need to be books that you mindfully select as getting you closer to what you want to be. Each month, jot down what you learned from the work. And see if it doesn't in fact get you closer to your goals. These readings helped me - I got a promotion this year, and I attribute at least some of that to the things I learned.

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• Book Review (Book 12) - 20 Master Plots

  - by BuckWoody

  This is a continuation of the books I challenged myself to read to help my career - one a month, for a year. You can read my first book review here, and the entire list is here. The book I chose for May 2012 was:20 Master Plots by Ronald B. Tobias. This is my final book review - at least for this year. I'll explain what I've learned in this book in particular, and in the last twelve months in general. Why I chose this book: Stories and themes are part of software, presenting, and working in teams. This book claims there are only 20 plots, ever. I wanted to find out. What I learned: Probably my most favorite read of the year. Deceptively small, amazingly insightful. The premise is that there are only a few "base" themes, and that once you learn them you can put together an interesting set of stories on most any topic. Yes, the author admits that this number has been different throughout history - some have said 50, others 14, and still others claim only one or two basic plots. This doesn't change the fact that you can build very complex stories from a simple set of circumstances and characters. Be warned - if you read this book it takes away much of the wonder from almost every movie or book you'll read from here on! I loved it. My favorite part is that the author gives you exercises to build stories, right from the start. I've actually used these as the start of a meeting to foster creativity. Amazing stuff. One of my favorite sections of the book deals with plot and story. Plot: The king died, and the queen died. Story: The king died, and the queen died of heartbreak. Add one or two words, and you have the essence of storytelling. A highly recommended read, for all folks of all ages. You'll like it, your spouse will like it, and your kids will like it. I learned to be a better storyteller, and it helped me understand that plots and stories are not just things in books - they are a direct reflection of human nature. That makes me a better manager of myself and others.   And this is the last of the reviews - at least for this year. I probably won't post many more book reviews here, but I will keep up the practice. As a reminder, the goal was to select 12 books that will help you reach your career goals. They don't have to be technical, or even apply directly to your job - but they do need to be books that you mindfully select as getting you closer to what you want to be. Each month, jot down what you learned from the work. And see if it doesn't in fact get you closer to your goals. These readings helped me - I got a promotion this year, and I attribute at least some of that to the things I learned.

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• The Best Data Integration for Exadata Comes from Oracle

  - by maria costanzo

  Oracle Data Integrator and Oracle GoldenGate offer unique and optimized data integration solutions for Oracle Exadata. For example, customers that choose to feed their data warehouse or reporting database with near real-time throughout the day, can do so without decreasing  performance or availability of source and target systems. And if you ask why real-time, the short answer is: in today’s fast-paced, always-on world, business decisions need to use more relevant, timely data to be able to act fast and seize opportunities. A longer response to "why real-time" question can be found in a related blog post. If we look at the solution architecture, as shown on the diagram below,  Oracle Data Integrator and Oracle GoldenGate are both uniquely designed to take full advantage of the power of the database and to eliminate unnecessary middle-tier components. Oracle Data Integrator (ODI) is the best bulk data loading solution for Exadata. ODI is the only ETL platform that can leverage the full power of Exadata, integrate directly on the Exadata machine without any additional hardware, and by far provides the simplest setup and fastest overall performance on an Exadata system. We regularly see customers achieving a 5-10 times boost when they move their ETL to ODI on Exadata. For  some companies the performance gain is even much higher. For example a large insurance company did a proof of concept comparing ODI vs a traditional ETL tool (one of the market leaders) on Exadata. The same process that was taking 5hrs and 11 minutes to complete using the competing ETL product took 7 minutes and 20 seconds with ODI. Oracle Data Integrator was 42 times faster than the conventional ETL when running on Exadata.This shows that Oracle's own data integration offering helps you to gain the most out of your Exadata investment with a truly optimized solution. GoldenGate is the best solution for streaming data from heterogeneous sources into Exadata in real time. Oracle GoldenGate can also be used together with Data Integrator for hybrid use cases that also demand non-invasive capture, high-speed real time replication. Oracle GoldenGate enables real-time data feeds from heterogeneous sources non-invasively, and delivers to the staging area on the target Exadata system. ODI runs directly on Exadata to use the database engine power to perform in-database transformations. Enterprise Data Quality is integrated with Oracle Data integrator and enables ODI to load trusted data into the data warehouse tables. Only Oracle can offer all these technical benefits wrapped into a single intelligence data warehouse solution that runs on Exadata. Compared to traditional ETL with add-on CDC this solution offers: §  Non-invasive data capture from heterogeneous sources and avoids any performance impact on source §  No mid-tier; set based transformations use database power §  Mini-batches throughout the day –or- bulk processing nightly which means maximum availability for the DW §  Integrated solution with Enterprise Data Quality enables leveraging trusted data in the data warehouse In addition to Starwood Hotels and Resorts, Morrison Supermarkets, United Kingdom’s fourth-largest food retailer, has seen the power of this solution for their new BI platform and shared their story with us. Morrisons needed to analyze data across a large number of manufacturing, warehousing, retail, and financial applications with the goal to achieve single view into operations for improved customer service. The retailer deployed Oracle GoldenGate and Oracle Data Integrator to bring new data into Oracle Exadata in near real-time and replicate the data into reporting structures within the data warehouse—extending visibility into operations. Using Oracle's data integration offering for Exadata, Morrisons produced financial reports in seconds, rather than minutes, and improved staff productivity and agility. You can read more about Morrison’s success story here and hear from Starwood here. From an Irem Radzik article.

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• iPhone Inspiration Stories...

  - by Luis Tovar

  So we have all heard of these overnight millionaires in the app store. We know it would be great, but somewhat unlikely to do ourselves. What I do know is, that learning and developing for the iPhone can sometimes be overwhelming. I continue to push on and learn more and more, even when my brain just cant take anymore I turn my mac on and read up on how to do new and different things I haven't done yet in my app yet. I would like to see a few post's of a common day developer's story and how their life has improved now that they are sitting up on the golden pedestal of an iphone developer. I look at these Dice.com jobs on think how nice it would be to be making that kind of money offered for an experienced iphone developer. Im on my way... and while I'm on that road i'd like to look over and see your story... Please include how you got into iPhone development and any apps you have out there and your success with them. Care to share?

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• iPhone: How to Display Text from UIWebView HTML Document in a UITextView

  - by ArgMan

  I have an RSS feed that gets arranged in a UITableView which lets the user select a story that loads in a UIWebView. However, I'd like to stop using the UIWebView and just use a UITextView or UILabel. This png is what I am trying to do (just display the various text aspects of a news story): I have tried using: NSString *myText = [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.textContent"]; and assigning the string to a UILabel but it doesn't work from where I am implementing it in webViewDidFinishLoad (--is that not the proper place?). I get a blank textView and normal webView. If I overlay a UITextView on top of a UIWebView on its own (that is, a webView that just loads one page), the code posted above works displays the text fine. The problem arises when I try to process the RSS feed . I've been stuck wondering why this doesn't work as it should for a few days now. If you have a better, more efficient way of doing it then placing the code in webViewDidFinishLoad, please let me know! Does it go in my didSelectRowAtIndexPath? Thank you very much in advance!

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• xml parsing using nsxmlParser in iphone

  - by filthynight

  hi all, I have a problem in parsing xml from google api, the api xml looks like this ....... Now the problem is that first of all, the tags are different, like first parent tag name is "abc" and second parent tag is "efg", further more the inner tags are different as well. i have modified code got from web that it parses another url, but in this case since the tags keeps on changing it does not work. the url = "http://www.google.com/ig/api?weather=anaheim,ca" Source Code (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ //NSLog(@"found this element: %@", elementName); if (currentElement) { [currentElement release]; currentElement = nil; } currentElement = [elementName copy]; NSString *thisOwner = [attributeDict objectForKey:@"data"]; NSLog(@"element Name-------: %@", thisOwner); if ([elementName isEqualToString:@"forecast_information"]) //|| [elementName isEqualToString:@"current_conditions"] || [elementName isEqualToString:@"forecast_conditions"]) { // clear out our story item caches... //NSString *nm = [[attributeDict objectForKey:@"city"] stringValue]; //NSLog(@"value...%@",nm); item = [[NSMutableDictionary alloc] init]; currentTitle = [[NSMutableString alloc] init]; currentDate = [[NSMutableString alloc] init]; currentSummary = [[NSMutableString alloc] init]; currentLink = [[NSMutableString alloc] init]; [item setObject:currentLink forKey:@"postal_code"]; [item setObject:currentSummary forKey:@"current_date_time"]; [item setObject:currentDate forKey:@"unit_system"]; NSLog(@"adding story: %@", currentTitle); [stories addObject:[item copy]]; } } I have another function didEndElement where the values are assigned in the array, but i could not figure out how to assign values of an attribute. Can somebody please help me in this regards Thanks!

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• Using NSXMLParser with CDATA

  - by Robb

  I'm parsing an RSS feed with NSXMLParser and it's working fine for the title and other strings but one of the elements is an image thats like <!CDATA <a href="http:image..etc> How do I add that as my cell image in my table view? Would I define that as an image type? This is what i'm using to do my parsing: - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ //NSLog(@"found this element: %@", elementName); currentElement = [elementName copy]; if ([elementName isEqualToString:@"item"]) { // clear out our story item caches... item = [[NSMutableDictionary alloc] init]; currentTitle = [[NSMutableString alloc] init]; currentDate = [ [NSMutableString alloc] init]; currentSummary = [[NSMutableString alloc] init]; currentLink = [[NSMutableString alloc] init]; } } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{ //NSLog(@"ended element: %@", elementName); if ([elementName isEqualToString:@"item"]) { // save values to an item, then store that item into the array... [item setObject:currentTitle forKey:@"title"]; [item setObject:currentLink forKey:@"link"]; [item setObject:currentSummary forKey:@"description"]; [item setObject:currentDate forKey:@"date"]; [stories addObject:[item copy]]; NSLog(@"adding story: %@", currentTitle); } } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{ //NSLog(@"found characters: %@", string); // save the characters for the current item... if ([currentElement isEqualToString:@"title"]) { [currentTitle appendString:string]; } else if ([currentElement isEqualToString:@"link"]) { [currentLink appendString:string]; } else if ([currentElement isEqualToString:@"description"]) { [currentSummary appendString:string]; } else if ([currentElement isEqualToString:@"pubDate"]) { [currentDate appendString:string]; } }

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• On Ruby on Rails, <%= or <% should only matter whether it is show or no show, but why will it give

  - by Jian Lin

  The following code: <div id="vote_form"> <%= form_remote_tag :url => story_votes_path(@story) do %> <%= submit_tag 'shove it' %> <% end %> </div> gives compilation error while if the first <%= is replaced with <%, then everything works. I thought they only differ by "show" or "not show", but why will it actually cause a compile error? The error is: > SyntaxError in Stories#show > > Showing > app/views/stories/show.html.erb where > line #17 raised: > > compile error C:/Software > Projects/ror/shov12/app/views/stories/show.html.erb:17: > syntax error, unexpected ')' ... > story_votes_path(@story) do ).to_s); > @output_buffer.concat ... > ^ C:/Software > Projects/ror/shov12/app/views/stories/show.html.erb:23: > syntax error, unexpected kENSURE, > expecting ')' C:/Software > Projects/ror/shov12/app/views/stories/show.html.erb:25: > syntax error, unexpected kEND, > expecting ')'

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• Music meta missing from Facebook /home

  - by Peter Watts

  When somebody shares a Spotify playlist, the attachment is missing from the Graph API. What is shown in Facebook: What is returned by the Graph API: { "id": "********_******", "from": { "name": "*****", "id": "*****" }, "message": "Refused's setlist from last night's secret show in Sweden...", "icon": "http://photos-c.ak.fbcdn.net/photos-ak-snc1/v85005/74/174829003346/app_2_174829003346_5511.gif", "actions": [ { "name": "Comment", "link": "http://www.facebook.com/*****/posts/*****" }, { "name": "Like", "link": "http://www.facebook.com/*****/posts/*****" }, { "name": "Get Spotify", "link": "http://www.spotify.com/redirect/download-social" } ], "type": "link", "application": { "name": "Spotify", "canvas_name": "get-spotify", "namespace": "get-spotify", "id": "174829003346" }, "created_time": "2012-03-01T22:24:28+0000", "updated_time": "2012-03-01T22:24:28+0000", "likes": { "data": [ { "name": "***** *****", "id": "*****" } ], "count": 1 }, "comments": { "count": 0 }, "is_published": true } There's absolutely no reference to an attachment, other than the fact the type is 'link' and the application is Spotify. If you want to test, Spotify's page (http://graph.facebook.com/spotify/feed) usually has a playlist or two embedded (and missing from Graph API). Also if you filter your home feed to just Spotify stories (http://graph.facebook.com/me/home?filter=app_174829003346), you'll get a bunch of useless stories without attachments (assuming your friends shared music recently) Anyone have any ideas how to access the playlist details, or is it unavailable to third party developers (if so, this is a very a bad user experience, because the story makes no sense without the attachment). I am able to fetch scrobbles without any trouble using the user_actions.listens. Also, if there is a recent activity story, e.g. "Peter listened to The Shins", I am able to get information about the band. The problem only happens on attachments.

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• Reload jQuery when returning partial view from a controller?

  - by mattruma

  I am making the following call in my web page: <div id="comments"> <fieldset> <h4> Post your comment</h4> <% using (this.Ajax.BeginForm("CreateStoryComment", "Story", new { id = story.StoryId }, new AjaxOptions { UpdateTargetId = "comments", OnSuccess = "OnStoryCommentAdded" })) { %> <%= this.Html.TextArea("Body", string.Empty)%> <input type="submit" value="Add Comment" /> <% } %> </fieldset> </div> There's other code, but that's the gist of it. The controller returns a partial view that "refreshes" everying in the comments div. My problem is that the following jQuery is not being applied: $(".comment .delete").click(function () { if (confirm("Are you sure you want to delete this record?") == true) { $.post(this.href); $(this).parents(".comment").fadeOut("normal"); } return false; }); I'm assuming it's not being attached because the jQuery loads after the inital page load. If my assumption is correct, how do I get this jQuery to "refresh". Hopefully that makes some sense! :)

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• How to react when asked a question you already know during an interview

  - by DevNull

  The short story:- If you are asked a tough algorithmic/puzzle question during an interview, whose solution is already known to you, do you:- Honestly tell the interviewer that you know this question already? -- this could result in bursting the interviewer's ego and him increasing the complexity level of the subsequent questions. Do an Oscar deserving performance and act as if you are thinking and trying hard and slowly getting to the solution? -- depending on your acting skills, could majorly impress the interviewer making the rest of the interview easier. Long story:- OK, this question comes as a result of what happened to me in a recent telephonic interview that I gave - the interview was supposed to be all algorithmic. The interviewer started with an algorithmic question which I had luckily already seen here on Stackoverflow. The best solution to that problem is not very intuitive and is more of a you-get-it-if-you-know-it kind. Now, just to not disappoint the interviewer too much, I took a few seconds as if I was pondering on the problem and then blurted out the answer which I knew too well having read and admired it on SO already. But I guess that gave it away to the interviewer that I already knew this question and since then, he started asking me for more efficient solutions and I kept coming up with approaches (even if not correct or more efficient, but I did touch a lot of different data structures and algos) and he kept asking for more efficient solutions and generally seemed put off by my initial salvo which was unexpected. What should I have done? Cheers!

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• I can't login to my Django app when debug is set to False

  - by Eric

  I have a very strange problem, and I don't know how to fix or debug it. Short Story: I get locked out of my Django app when Debug is set to False. Long story: Case 1 (the first time it happened): 1. I enter my login info, but It just redirects to the login page. 2. I restart the server, try to login, and it works fine, I get in. 3. a few hours later I come back, log out, try to log back in and I can't. It just redirects to the login page. Case 2 (I figure out how to provoke the login failure): 1. I restart the server and am able to login to the site. 2. I log in and log out several times, everything is fine. 3. I go to a non-existing page and get a server error. 4. I log out and try to log back in, and I can't, just get redirected back to the login page. Case 3 (I can't provoke the login failure with Debug set to True): 1. I restart the server and am able to login to the site. 2. I log in and log out several times, everything is fine. 3. I go to a non-existing page and get a traceback. 4. I log out and log back in, everything works. 5. I wait and play around with it and can't get the login to fail while in Debug mode. Please help!

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• How does the NY Times iPhone app do this?

  - by ArgMan

  Alright, I have an RSS feed that gets arranged in a UITableView and then the user selects a story and it loads in a UIWebView. However, I'd like to stop using the UIWebView and just use a UITextView or UILabel. This png is what I am trying to do (just display the various text aspects of a news story): http://img411.imageshack.us/img411/2449/screenshot20100315at120.png Let me start off by saying that I have tried to use the usualNSString *myText = [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.textContent"]; and assign it to a UILabel, but it doesn't work the way that I am implementing it (in webViewDidFinishLoad--is that not correct?) and I get a blank textView and normal webView. If I overlay a UITextView on top of a UIWebView on its own (that is, a webView that just loads one page), the code posted above works fine to display the text I require, but the problem arises when the RSS feed is added into the mix. Ideas and/or help, guys? I've been stuck wondering why this doesn't work as it should for a few days now. If you have a better, more efficient way of doing it then placing the code in webViewDidFinishLoad, please let me know! Does it go in my didSelectRowAtIndexPath? I'm lost here, guys. Thank you very much in advance!

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• How to automatically show Title of the Entries/Articles in the Browser Title Bar in ExpressionEngine 2?

  - by Ibn Saeed

  How would I output the title of an entry in ExpressionEngine and display it in the browser's title bar? Here is the content of my page's header: <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Test Site</title> <link rel="stylesheet" href="{stylesheet=site/site_css}" type="text/css" media="screen" /> </head> What I need is for each page to display the title of the entry in my browser's title bar — how can I achieve that? Part of UPDATED Code: Here is how i have done it : {exp:channel:entries channel="news_articles" status="open|Featured Top Story|Top Story" limit="1" disable="member_data|trackbacks|pagination"} {embed="includes/document_header" page_title=" | {title}"} <body class="home"> <div id="layoutWrapper"> {embed="includes/masthead_navigation"} <div id="content"> <div id="article"> <img src="{article_image}" alt="News Article Image" /> <h4>{title}</h4> <h5><span class="by">By</span> {article_author}</h5> <p>{entry_date format="%M %d, %Y"} -- Updated {gmt_edit_date format="%M %d, %Y"}</p> {article_body} {/exp:channel:entries} </div> What do you think?

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• What is the "right" way to make a modular ASP.NET page?

  - by Wayne Werner

  Hi, I'm writing an internal program using ASP.NET (Visual Studio 2008). The basic premise is that folks will connect to the page through their web browser, put in some data (which will be validated and sanitized of course), click "submit" and then a query will be run on a database. I told you that story so I can tell you this story - I want to make my program modular for the likelihood that this program will be updated later on, and probably extended. My initial thought is to compile the database handler as a dll and then use its functionality on my page (see my little diagram). But I can't figure out how to hook the dll into my page - My Google-fu has failed which leads me to my questions: 1) Is creating a dll the "right" solution? If so, continue to question 2, if not, what should I be doing? Any resources/tutorial links would be appreciated. 2) How do I attach a dll? Visual Studio tells me I can't Imports from an .aspx page, and I've tried <%@ Import namespace="MyDllName" % and a few other variations, none of which worked. Thanks!

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• Convert JSON into array dataType

  - by Myhome Stories

  I have the following JSON string var json = {"result":[{"address":" Ardenham Court, Oxford Road ,AYLESBURY, BUCKINGHAMSHIRE ,UNITED KINGDOM","picture":"1.jpg","uniqueid":"8b54275a60088547d473d462763b4738","story":"I love my home. I feel safe, I am comfortable and I am loved. A home can't be a home without our parents and our loved ones. But sad to say, some are experiencing that eventhough their loved ones are in their houses, they are not loving each other. There is a big war. You can't call it a home."}]} I want to get address ,picture,story separately for accomplish this. I tried recent answers in stackoverflow, but I was not able to achieve it. Below is what I have tried, $.each(json.result.address, function (index, value) { // Get the items var items = this.address; // Here 'this' points to a 'group' in 'groups' // Iterate through items. $.each(items, function () { console.log(this.text); // Here 'this' points to an 'item' in 'items' }); });

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• Why does Mac OS X ignore my Windows NTFS and Share permissions?

  - by Michael

  Mac OS X Snow Leopard Windows Server 2003 Windows Folder "Videos" Share Permissions on Videos - Everyone NTFS Permissions on Videos - System (Full Control) - Domain Users (Modify) - Domain Admins (Full Control) Mac user Michael is a part of the Domain Users group. He connects to Videos using cifs://server/Videos and authenticates with his username Michael. Michael copies over a file "dance dance baby.avi". User Jon opens the Videos folder but cannot see the dance dance baby.avi file. Checking the dance dance baby.avi file permissions here is what I see: Everyone - Read, Write Domain Admins - Full Control Michael - Read, Write Owner of File - Michael So here's my question, how come when Michael copies a file over from a Mac, the permissions on the file get changed even though Michael has no rights to change permissions? If the same file is copied over from a Windows machine, it just inherits the proper permissions from the parent Video folder. Am I missing something? Are my permissions wrong? Thanks. Michael

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• using sed, how to change the text on line seven to read seventh?

  - by Steve

  using sed, how to change the text on line seven to read seventh? Steve Blenheim:238-923-7366:95 Latham Lane, Easton, PA 83755:11/12/56:20300 Betty Boop:245-836-8357:635 Cutesy Lane, Hollywood, CA 91464:6/23/23:14500 Igor Chevsky:385-375-8395:3567 Populus Place, Caldwell, NJ 23875:6/18/68:23400 Norma Corder:397-857-2735:74 Pine Street, Dearborn, MI 23874:3/28/45:245700 Jennifer Cowan:548-834-2348:583 Laurel Ave., Kingsville, TX 83745:10/1/35:58900 Jon DeLoach:408-253-3122:123 Park St., San Jose, CA 04086:7/25/53:85100 Karen Evich:284-758-2857:23 Edgecliff Place, Lincoln, NB 92743:7/25/53:85100 Fred Fardbarkle:674-843-1385:20 Parak Lane, Duluth, MN 23850:4/12/23:780900 Lori Gortz:327-832-5728:3465 Mirlo Street, Peabody, MA 34756:10/2/65:35200 Paco Gutierrez:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500 Ephram Hardy:293-259-5395:235 CarltonLane, Joliet, IL 73858:8/12/20:56700

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• Apache, modifying response codes from 404 to 301

  - by user72539

  Hi, I'm running a magento installation on an apache server. There are many pages indexed in both google and linked to from external sites. I can't use 301 redirects in a .htaccess file as I can't be sure I will catch all the links. At the moment all requests are rewritten through magento and if a request isn't found magento returns a 404 File not Found. Is there a way of using one of the apache modules to filter the response* from magento and if a 404 Not Found is being sent back then replace the response with a standard 301 Redirect to the home page? E.g. Request to Magento -- Apache -- Rewrite to Magento index.php page -- page processed. Response if request exists -- return results (200) if request doesn't exist -- return 404 -- apache filter change response -- return 301 redirect to / I appreciate any help. Thanks, Jon as far as I am aware mod_rewrite is only used to rewrite requests and doesn't allow the modification of responses.

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