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• How to store data which contents the quotes in mysql

  - by Nitz

  Hey Guys, i have one problem. In one of my form i have use rich text editor from the yahoo. now i want to store the data from that text area to mysql database. bcz user can enter anything in that textarea. as example user can enter many double quotes, or single quotes. so i need to store that data which may content many double quotes or many single quotes, so how to do that? normally we store by adding that data in one variable and then put that in sql then fire. but now variable contents many quotes and now i have problem to store. i can't remove that quotes bcz of my style which is generated by rich text editor. So how can store that data without affecting my styles of data.

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• Is data integrity possible without normalization?

  - by shuniar

  I am working on an application that requires the storage of location information such as city, state, zip code, latitude, and longitude. I would like to ensure: Location data is accurate Detroit, CA Detroit IS NOT in California Detroit, MI Detroit IS in Michigan Cities and states are spelled correctly California not Calefornia Detroit not Detriot Cities and states are named consistently Valid: CA Detroit Invalid: Cali california DET d-town The D Also, since city/zip data is not guaranteed to be static, updating this data in a normalized fashion could be difficult, whereas it could be implemented as a de facto location if it is denormalized. A couple thoughts that come to mind: A collection of reference tables that store a list of all states and the most common cities and zip codes that can grow over time. It would search the database for an exact or similar match and recommend corrections. Use some sort of service to validate the location data before it is stored in the database. Is it possible to fulfill these requirements without normalization, and if so, should I denormalize this data?

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• pyinstaller: 2 instances of my cherrypy app exe get executed.

  - by d.c

  I have a cherrypy app that I've made an exe with pyinstaller. now when I run the exe it loads itself twice into memory. Watching the taskmanager shows the first instance load into about 1k, then a second later a second instance of hte exe loads into about 3k ram. If I close the bigger one both processes die. If I close hte smaller one only that one dies. Loading the exe with subprocess, if I try to proc.kill(), it only kills the small one leaving the other running in memory. Is this a sideeffect of using cherrypy and pyinstaller together?

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• Are SOLID principles really solid?

  - by Arseny

  The first pattern stands for this acronym is SRP. Here is a quote. the single responsibility principle states that every object should have a single responsibility, and that responsibility should be entirely encapsulated by the class. That's is simple and clear till we start to code ) Suppose we have a class with well defined SRP. To serialize this class instances we need to add special atrributes to that class. So now the class have other responsibility. Dosen't it violate SRP? Let's see other story. Interface implementation. Then we implement an interface we simply add other responsibility say dispose its resorces or compare its instances or whatever. So my question. Is it possible to keep SRP complete? How can we do it?

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• New Release of ROracle posted to CRAN

  - by mhornick

  Oracle recently updated ROracle to version 1.1-2 on CRAN with enhancements and bug fixes. The major enhancements include the introduction of Oracle Wallet Manager and support for datetime and interval types.  Oracle Wallet support in ROracle allows users to manage public key security from the client R session. Oracle Wallet allows passwords to be stored and read by Oracle Database, allowing safe storage of database login credentials. In addition, we added support for datetime and interval types when selecting data, which expands ROracle's support for date data.  See the ROracle NEWS for the complete list of updates. We encourage ROracle users to post questions and provide feedback on the Oracle R Forum. In addition to being a high performance database interface to Oracle Database from R for general use, ROracle supports database access for Oracle R Enterprise.

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• A PHP design pattern for the model part [PHP Zend Framework]

  - by Matthieu

  I have a PHP MVC application using Zend Framework. As presented in the quickstart, I use 3 layers for the model part : Model (business logic) Data mapper Table data gateway (or data access object, i.e. one class per SQL table) The model is UML designed and totally independent of the DB. My problem is : I can't have multiple instances of the same "instance/record". For example : if I get, for example, the user "Chuck Norris" with id=5, this will create a new model instance wich members will be filled by the data mapper (the data mapper query the table data gateway that query the DB). Then, if I change the name to "Duck Norras", don't save it in DB right away, and re-load the same user in another variable, I have "synchronisation" problems... (different instances for the same "record") Right now, I use the Multiton pattern : like Singleton, but multiple instances indexed by a key (wich is the user ID in our example). But this is complicating my developpement a lot, and my testings too. How to do it right ?

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• Django aggregation query on related one-to-many objects

  - by parxier

  Here is my simplified model: class Item(models.Model): pass class TrackingPoint(models.Model): item = models.ForeignKey(Item) created = models.DateField() data = models.IntegerField() In many parts of my application I need to retrieve a set of Item's and annotate each item with data field from latest TrackingPoint from each item ordered by created field. For example, instance i1 of class Item has 3 TrackingPoint's: tp1 = TrackingPoint(item=i1, created=date(2010,5,15), data=23) tp2 = TrackingPoint(item=i1, created=date(2010,5,14), data=21) tp3 = TrackingPoint(item=i1, created=date(2010,5,12), data=120) I need a query to retrieve i1 instance annotated with tp1.data field value as tp1 is the latest tracking point ordered by created field. That query should also return Item's that don't have any TrackingPoint's at all. If possible I prefer not to use QuerySet's extra method to do this. That's what I tried so far... and failed :( Item.objects.annotate(max_created=Max('trackingpoint__created'), data=Avg('trackingpoint__data')).filter(trackingpoint__created=F('max_created')) Any ideas?

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• Best Practices for working with files via c#

  - by user177883

  Application I work on generates several hundreds of files in a 15 minutes period of times. and the back end of the application takes these files and process them (updates database with those values). One problem is database locks. What are the best practices on working with several thousands of files to avoid locking and efficiently processing these files? Would it be more efficient to create a single file and process it? or process single file at a time? What are so common best practices?

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• Can resizing images with css be good?

  - by Echo

  After reading Is CSS resizing of images still a bad idea?, I thought of a similar question. (too similar? should this be closed?) Lets say you need to use 10 different product image sizes throughout your website and you have 20k-30k different product images, should you use 10 different files for each image size? or maybe 5 different files and use css to resize the other 5? Would there ever be combination that would be good? Or should you always make separate image files? If you use css to resize them, you will save on storage (in GBs) but you will have slight increase in bandwidth and slower loading images(but if images are cached, and you show both sizes of the image would you use less bandwidth and have faster loads?) (But of course you wouldn't want to use css to resize images for mobile sites.)

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• AppleScript to open URL in Safari crashes for Flash-based websites

  - by Mark

  I'm trying to open a URL in Safari. It works fine for websites without Flash embedded, but crashes Safari for Flash sites. Example (this WORKS): tell application "Safari" to open location "http://google.com" This CRASHES when Safari is not already running: tell application "Safari" to open location "http://grooveshark.com" Two things I noticed: Safari only crashes for websites with embedded Flash The script above only crashes if a new instance of Safari is created (i.e. Safari was not running before) From the second observation I assume that it could be a permission issue of some sort. Maybe the Safari instance launched from the AppleScript has a problem loading plugins?

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• When we should use pushScene and replaceScene in cocos2d ?

  - by srikanth rongali

  Hi, I cocos2d, I am using pushScene and replaceScene to move to next scene. But, I am confused which we should use? When I am using replaceScene in some places app is crashing and giving errors like -[UITextView length]: unrecognized selector sent to instance 0x842a750 Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UITextView length]: unrecognized selector sent to instance 0x842a750' But, in my program I am not passing length to UITextView. My program is in this way In scene1 I have UITextView, and I am replacing this scene with scene2. Then -(id)buttonPressed:(id)sender { [description removeFromSuperview]; // It is the textView(description) CCScene *Scene = [CCScene node]; CCLayer *Layer = [scene2 node]; [Scene addChild:Layer]; [[CCDirector sharedDirector] setAnimationInterval:1.0/60]; [[CCDirector sharedDirector] replaceScene: Scene]; } But, when I am using pushScene in presence of replaceScene it is working good. Please clarify me which one should use in which cases ? Thank You

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• VB.NET add an element to the XML document with LINQ to XML

  - by Bayonian

  Hi, I'm adding an element to existing XML doc with the following code: Dim theXMLSource As String = Server.MapPath("~/Demo/") & "LabDemo.xml" Dim nodeElement As XElement Dim attrAndValue As XElement = _ <LabService> <ServiceType> <%= txtServiceType.Text.Trim %> </ServiceType> <Level> <%= txtLevel.Text.Trim %> </Level> </LabService> nodeElement.Add(New XElement(attrAndValue)) nodeElement.Save(theXMLSource) It makes error like this: System.NullReferenceException: Object reference not set to an instance of an object. Object reference not set to an instance of an object. Error line: nodeElement.Add(New XElement(attrAndValue)) I debugged it but I couldn't get the error yet. Can you show what the problem is? Thank you

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• groovy compile error

  - by Bunny Rabbit

  class x{ public static void main(String[] args){ String x="<html><head></head></html>"; String arr[]=x.split("<head>"); String script="hi"; x=arr[0]+"<head>"+script+arr[1]; System.out.println(x); } } the above code when compiled as a java file compiles fine but when used a s a groovy file spits the error : org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed: D:\Garage\groovy-binary-1.7.1\groovy-1.7.1\bin\x.groovy: 4: Apparent variable 'a rr' was found in a static scope but doesn't refer to a local variable, static fi eld or class. Possible causes: You attempted to reference a variable in the binding or an instance variable fro m a static context. You misspelled a classname or statically imported field. Please check the spelli ng. You attempted to use a method 'arr' but left out brackets in a place not allowed by the grammar. @ line 4, column 10. String arr[]=x.split(""); ^ D:\Garage\groovy-binary-1.7.1\groovy-1.7.1\bin\x.groovy: 6: Apparent variable 'a rr' was found in a static scope but doesn't refer to a local variable, static fi eld or class. Possible causes: You attempted to reference a variable in the binding or an instance variable fro m a static context. You misspelled a classname or statically imported field. Please check the spelli ng. You attempted to use a method 'arr' but left out brackets in a place not allowed by the grammar. @ line 6, column 5. x=arr[0]+""+script+arr[1]; ^ D:\Garage\groovy-binary-1.7.1\groovy-1.7.1\bin\x.groovy: 6: Apparent variable 'a rr' was found in a static scope but doesn't refer to a local variable, static fi eld or class. Possible causes: You attempted to reference a variable in the binding or an instance variable fro m a static context. You misspelled a classname or statically imported field. Please check the spelli ng. You attempted to use a method 'arr' but left out brackets in a place not allowed by the grammar. @ line 6, column 28. x=arr[0]+""+script+arr[1]; ^ 3 errors D:\Garage\groovy-binary-1.7.1\groovy-1.7.1\bin

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• links for 2010-04-07

  - by Bob Rhubart

  James McGovern: Enterprise Architecture and Social CRM "With a few exceptions, the vast majority of enterprise architects I know spend an awful lot of time focused on internal issues whether it is rationalization, the cloud, storage governance, data center consolidation, creation of reference architectures, portfolio management and other considerations that aren’t even visible to customers. One should ask whether IT can be truly successful if we are busy listening to the business but otherwise are blissfully ignorant towards the customers they serve." -- James McGovern (tags: enterprisearchitecture crm socialcomputing) WRF Benchmark: X6275 Beats Power6 - BestPerf "Oracle's Sun Blade X6275 cluster is 28% faster than the IBM POWER6 cluster on Weather Research and Forecasting (WRF) continental United Status (CONUS) benchmark datasets. The Sun Blade X6275 cluster used a Quad Data Rate (QDR) InfiniBand connection along with Intel compilers and MPI." (tags: oracle sun x6275 benchmarks)

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• Specify which row to return on SQLite Group By

  - by lozzar

  I'm faced with a bit of a difficult problem. I store all the versions of all documents in a single table. Each document has a unique id, and the version is stored as an integer which is incremented everytime there is a new version. I need a query that will only select the latest version of each document from the database. While using GROUP BY works, it appears that it will break if the versions are not inserted in the database in the order of version (ie. it takes the maximum ROWID which will not always be the latest version). Note, that the latest version of each document will most likely be a different number (ie. document A is at version 3, and document B is at version 6). I'm at my wits end, does anybody know how to do this (select all the documents, but only return a single record for each document_id, and that the record returned should have the highest version number)?

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• Add Quartz.net job without starting the scheduler

  - by Henrik Jepsen

  Is there any way of adding jobs to Quartz.Net jobstore without starting up a scheduler instance?

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• How are .NET 4 GUIDs generated?

  - by mafutrct

  I am aware of the multitude of questions here as well as Raymond's excellent (as usual) post. However, since the algorithm to create GUIDs was changed apparently, I found it hard to get my hands on any up-to-date information. The MSDN seems to try and provide as few information as possible. What is known about how GUIDs are generated in .NET 4? What was changed, and how does it affect the security ("randomness") and integrity ("uniqueness")? One specific aspect I'm interested in: In v1, it seems to be about impossible to generate the same GUID on a single machine again since there was a timestamp and counter involved. In v4, this is no longer the case (I was told), so the chance to get the same GUID on a single machine ... increased?

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• Create Class functions on the fly?

  - by JasonS

  Hi, i have a validation class which needs improving. If I require some custom validation I need to specify a custom function. It works a bit like this: The controller tells the validation that a custom validation function is required. The controller runs the validation. --- Gets iffy here --- Validation class creates a new instance of the controller class.... Validation class runs controller-custom_validation_function() Validation class returns true / false Is there someway that I can alter this to do something like this? $validation = new validation; // Insert rules here. $validation-function() = $this-function(); By doing this I could get rid of the step of creating an unneeded class instance.

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• Oracle Announces General Availability of Oracle Database 12c, the First Database Designed for the Cloud

  - by Javier Puerta

  Oracle Announces General Availability of Oracle Database 12c, the First Database Designed for the Cloud REDWOOD SHORES, Calif. – July 1, 2013 News Summary As organizations embrace the cloud, they seek technologies that will transform business and improve their overall operational agility and effectiveness. Oracle Database 12c is a next-generation database designed to meet these needs, providing a new multitenant architecture on top of a fast, scalable, reliable, and secure database platform. By plugging into the cloud with Oracle Database 12c, customers can improve the quality and performance of applications, save time with maximum availability architecture and storage management and simplify database consolidation by managing hundreds of databases as one. Read full press release

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• Oracle Announces General Availability of Oracle Database 12c, the First Database Designed for the Cloud

  - by Javier Puerta

  Oracle Announces General Availability of Oracle Database 12c, the First Database Designed for the Cloud REDWOOD SHORES, Calif. – July 1, 2013 News Summary As organizations embrace the cloud, they seek technologies that will transform business and improve their overall operational agility and effectiveness. Oracle Database 12c is a next-generation database designed to meet these needs, providing a new multitenant architecture on top of a fast, scalable, reliable, and secure database platform. By plugging into the cloud with Oracle Database 12c, customers can improve the quality and performance of applications, save time with maximum availability architecture and storage management and simplify database consolidation by managing hundreds of databases as one. Read full press release  

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• Tracking unique versions of files with hashes

  - by rwmnau

  I'm going to be tracking different versions of potentially millions of different files, and my intent is to hash them to determine I've already seen that particular version of the file. Currently, I'm only using MD5 (the product is still in development, so it's never dealt with millions of files yet), which is clearly not long enough to avoid collisions. However, here's my question - Am I more likely to avoid collisions if I hash the file using two different methods and store both hashes (say, SHA1 and MD5), or if I pick a single, longer hash (like SHA256) and rely on that alone? I know option 1 has 288 hash bits and option 2 has only 256, but assume my two choices are the same total hash length. Since I'm dealing with potentially millions of files (and multiple versions of those files over time), I'd like to do what I can to avoid collisions. However, CPU time isn't (completely) free, so I'm interested in how the community feels about the tradeoff - is adding more bits to my hash proportionally more expensive to compute, and are there any advantages to multiple different hashes as opposed to a single, longer hash, given an equal number of bits in both solutions?

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• Oracle Database 11g Helps Control Exponential Data Growth

  - by [email protected]

  The 2010 ESG annual customer survey is now available. As part of it, ESG interviewed 300 customers about their IT priorities and, unsurprisingly, "Manage Data Growth" is top of the list. Perhaps less self-evident is the proposed solution to target this prime concern: "Often overlooked because it is a database platform, Oracle Database 11g offers additional capabilities such as automatic storage management (ASM), advanced data compression, and data protection that make managing data growth much easier for organizations of any size." The paper goes on to discuss these capabilities and highlights their potential benefits. Oracle Database 11g Helps Control Exponential Database Growth - a worthwhile read for anyone having to deal with rapidly increasing amounts of data. Download your free copy here.

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• Mock static method Activator.CreateInstance to return a mock of another class

  - by Jeep87c

  I have this factory class and I want to test it correctly. Let's say I have an abstract class which have many child (inheritance). As you can see in my Factory class the method BuildChild, I want to be able to create an instance of a child class at Runtime. I must be able to create this instance during Runtime because the type won't be know before runtime. And, I can NOT use Unity for this project (if so, I would not ask how to achieve this). Here's my Factory class that I want to test: public class Factory { public AnAbstractClass BuildChild(Type childType, object parameter) { AnAbstractClass child = (AnAbstractClass) Activator.CreateInstance(childType); child.Initialize(parameter); return child; } } To test this, I want to find a way to Mock Activator.CreateInstance to return my own mocked object of a child class. How can I achieve this? Or maybe if you have a better way to do this without using Activator.CreateInstance (and Unity), I'm opened to it if it's easier to test and mock! I'm currently using Moq to create my mocks but since Activator.CreateInstance is a static method from a static class, I can't figure out how to do this (I already know that Moq can only create mock instances of objects). I took a look at Fakes from Microsoft but without success (I had some difficulties to understand how it works and to find some well explained examples). Please help me! EDIT: I need to mock Activator.CreateInstance because I want to force this method to return another mocked object. The correct thing I want is only to stub this method (not to mock it). So when I test BuildChild like this: [TestMethod] public void TestBuildChild() { var mockChildClass = new Mock(AChildClass); // TODO: Stub/Mock Activator.CreateInstance to return mockChildClass when called with "type" and "parameter" as follow. var type = typeof(AChildClass); var parameter = "A parameter"; var child = this._factory.BuildChild(type, parameters); } Activator.CreateInstance called with type and parameter will return my mocked object instead of creating a new instance of the real child class (not yet implemented).

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• How can I condense stand-alone characters in Perl?

  - by brydgesk

  I'm trying to identify and condense single (uppercase) characters in a string. For example: "test A B test" - "test AB test" "test A B C test" - "test ABC test" "test A B test C D E test" - "test AB test CDE test" I have it working for single occurrences (as in the first above example), but cannot figure out how to chain it for multiple occurrences. $str =~ s/ ([A-Z]) ([A-Z]) / \1\2 /g; I'll probably feel stupid when I see the solution, but I'm prepared for that. Thanks in advance.

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• Customer Centricity: It's Not Easy, But Worth It

  - by tony.berk

  Defining customer centricity is relatively easy: focusing on the customer and their experiences and interactions with your company. Implementing a customer centric strategy is not so easy. We've highlighted customers who have focused on their customers and experienced great success including SJ, the Swedish rail operator, and Vopak, the world's largest provider of conditioned storage facilities for bulk liquids. In this interview with Stuart Lennie, President, Volvo IT, North America and VP, Volvo's Global Sales to Order Solutions Unit, we get the opportunity to learn from another company that is not just talking about the customer, but actually implementing the significant strategic shifts required to become customer centric. Volvo has developed a vision, a strategy and a methodology to keep existing customers by understanding what is important to them. To see other customer success stories, visit Siebel CRM Success. Click here, to learn more about Oracle's CRM products.

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