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  • Unchecked call to compareTo

    - by Dave Jarvis
    Background Create a Map that can be sorted by value. Problem The code executes as expected, but does not compile cleanly: http://pastebin.com/bWhbHQmT The syntax for passing Comparable as a generic parameter along to the Map.Entry<K, V> (where V must be Comparable?) -- so that the (Comparable) typecast shown in the warning can be dropped -- eludes me. Warning Compiler's cantankerous complaint: SortableValueMap.java:24: warning: [unchecked] unchecked call to compareTo(T) as a member of the raw type java.lang.Comparable return ((Comparable)entry1.getValue()).compareTo( entry2.getValue() ); Question How can the code be changed to compile without any warnings (without suppressing them while compiling with -Xlint:unchecked)? Related TreeMap sort by value How to sort a Map on the values in Java? http://paaloliver.wordpress.com/2006/01/24/sorting-maps-in-java/ Thank you!

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  • Intercept method calls in Groovy for automatic type conversion

    - by kerry
    One of the cooler things you can do with groovy is automatic type conversion.  If you want to convert an object to another type, many times all you have to do is invoke the ‘as’ keyword: def letters = 'abcdefghijklmnopqrstuvwxyz' as List But, what if you are wanting to do something a little fancier, like converting a String to a Date? def christmas = '12-25-2010' as Date ERROR org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object '12-25-2010' with class java.lang.String' to class 'java.util.Date' No bueno! I want to be able to do custom type conversions so that my application can do a simple String to Date conversion. Enter the metaMethod. You can intercept method calls in Groovy using the following method: def intercept(name, params, closure) { def original = from.metaClass.getMetaMethod(name, params) from.metaClass[name] = { Class clazz -> closure() original.doMethodInvoke(delegate, clazz) } } Using this method, and a little syntactic sugar, we create the following ‘Convert’ class: // Convert.from( String ).to( Date ).using { } class Convert { private from private to private Convert(clazz) { from = clazz } static def from(clazz) { new Convert(clazz) } def to(clazz) { to = clazz return this } def using(closure) { def originalAsType = from.metaClass.getMetaMethod('asType', [] as Class[]) from.metaClass.asType = { Class clazz -> if( clazz == to ) { closure.setProperty('value', delegate) closure(delegate) } else { originalAsType.doMethodInvoke(delegate, clazz) } } } } Now, we can make the following statement to add the automatic date conversion: Convert.from( String ).to( Date ).using { new java.text.SimpleDateFormat('MM-dd-yyyy').parse(value) } def christmas = '12-25-2010' as Date Groovy baby!

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  • Oracle Tutor: XPDL conversion (and why you should care)

    - by mary.keane
    You may have noticed that the Oracle Business Process Converter feature in Tutor 14 supports "XPDL" conversion to Oracle Business Process Analysis Suite (BPA), Oracle Business Process Management Suite (BPM), and Oracle Tutor, and you may have briefly wondered "what is XPDL?" before you moved on to the Visio import feature (a very popular feature in Tutor 14). This posting is for those who do not yet understand (or care) about XPDL and process modeling. Many of us (and I'm including myself) have spent years working in the process definition arena: we've written procedures, designed systems and software to help others write procedures, and have been responsible for embedding policies and procedures into training material for employees. We've worked with tools such as Oracle Tutor, Microsoft Visio, Microsoft Word, and UPK. Most of us have never worked with "modeling tools" before, and we certainly never had to understand BPMN. It's a brave new world in this arena, and companies desperately need people with policy and procedural system expertise to be able to work with system analysts so there is a seamless transfer of knowledge from IT to employees. When working with applications, a picture is worth a thousand words, so eventually you're going to need to understand and be able to work with business process models. XPDL is an acronym for XML Process Definition Language, and it is an interchange format for business process models. It allows you to take a BPMN model that was developed in one workflow application such as BizAgi and import it into another workflow application or a true BPMN management system such as Oracle BPM. Specifically, the XPDL format contains the graphical information of a model as well as any executable information. By using a common format, models can be moved from a basic modeling application used by business owners to applications used by system architects. Over 80 applications support the XPDL format, including MetaStorm ProVision, BEA ALBPM, BizAgi, and Tibco. I mention these applications because we have provided XSLT mapping files specifically for these vendors. Oracle Business Process Converter was designed with user extensibility in mind, and thus users can add their own XML files so that additional XPDL models from other vendors can be converted to BPM, BPA, and Oracle Tutor. Instructions on how to add your own files can be found in Appendix 4 of the Oracle Business Converter manual. Let's take a visual look at how this works. Here is an example of a model devloped in BizAgi: This model can be created by the average business user without a large learning curve, and it's a good start for the system analyst who will be adding web services as well as for the business manager who manages the process described in the model. By exporting this model as XPDL, the information can be converted into Oracle BPA and Oracle BPM as well as converted to Oracle Tutor to become the framework for a procedure. Through this conversion feature, one graphic illustration of a business process can be used by a system analyst, business analyst, business manager, and employee, as seen below. Model Converted to Tutor Procedure Below is the task section of the procedure after conversion from an XPDL file. Model converted to BPA Model converted to BPM End users still want step by step instructions on how to perform their jobs, so procedures (Oracle Tutor) and application simulations (UPK) are still a critical piece of the solution. But IT professionals need graphic descriptions of how the applications work, regardless of whether there are any tasks involving humans. Now there is a way to convert procedures (Oracle Tutor docx files) and basic models (XPDL files) so that business managers and system analysts can share process information. References Wikipedia XPDL. Workflow Management Coalition, XPDL Support and Resources Oracle Business Process Converter manual, Oracle Tutor 14 Oracle Business Process Management 11g If you have any XPDL conversion stories to share, we'd love to hear from you. Best wishes for the coming new year, Mary Keane, Senior Development Manager, Oracle Tutor and BPM

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  • How to optimize process of outlook files (*msg) conversion to .pdf?

    - by Lilly
    The aim is to convert several messages from Microsoft Outlook (2003 and/or 2007 versions) to .pdf files. Condition: One message should generate a corresponding single pdf file. If possible, pdf file should be named with date format YYYY-MM-DD (e.g. 2011-02-16.pdf). The current process, limited by softwares such as CutePDF, requires the conversion performed one message at a time. I'm looking for a solution that allows the conversion of several messages at once, but under the condition abovementioned (mainly: one message = one pdf file).

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  • Loosely coupled implicit conversion

    - by ltjax
    Implicit conversion can be really useful when types are semantically equivalent. For example, imagine two libraries that implement a type identically, but in different namespaces. Or just a type that is mostly identical, except for some semantic-sugar here and there. Now you cannot pass one type into a function (in one of those libraries) that was designed to use the other, unless that function is a template. If it's not, you have to somehow convert one type into the other. This should be trivial (or otherwise the types are not so identical after-all!) but calling the conversion explicitly bloats your code with mostly meaningless function-calls. While such conversion functions might actually copy some values around, they essentially do nothing from a high-level "programmers" point-of-view. Implicit conversion constructors and operators could obviously help, but they introduce coupling, so that one of those types has to know about the other. Usually, at least when dealing with libraries, that is not the case, because the presence of one of those types makes the other one redundant. Also, you cannot always change libraries. Now I see two options on how to make implicit conversion work in user-code: The first would be to provide a proxy-type, that implements conversion-operators and conversion-constructors (and assignments) for all the involved types, and always use that. The second requires a minimal change to the libraries, but allows great flexibility: Add a conversion-constructor for each involved type that can be externally optionally enabled. For example, for a type A add a constructor: template <class T> A( const T& src, typename boost::enable_if<conversion_enabled<T,A>>::type* ignore=0 ) { *this = convert(src); } and a template template <class X, class Y> struct conversion_enabled : public boost::mpl::false_ {}; that disables the implicit conversion by default. Then to enable conversion between two types, specialize the template: template <> struct conversion_enabled<OtherA, A> : public boost::mpl::true_ {}; and implement a convert function that can be found through ADL. I would personally prefer to use the second variant, unless there are strong arguments against it. Now to the actual question(s): What's the preferred way to associate types for implicit conversion? Are my suggestions good ideas? Are there any downsides to either approach? Is allowing conversions like that dangerous? Should library implementers in-general supply the second method when it's likely that their type will be replicated in software they are most likely beeing used with (I'm thinking of 3d-rendering middle-ware here, where most of those packages implement a 3D vector).

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  • C# .NET : Is using the .NET Image Conversion enough?

    - by contactmatt
    I've seen a lot of people try to code their own image conversion techniques. It often seems to be very complicated, and ends up using GDI+ funciton calls, and manipulating bits of the image. This has got me wondering if I am missing something in the simplicity of .NET's image conversion call when saving an image. Here's the code I have Bitmap tempBmp = new Bitmap("c:\temp\img.jpg"); Bitmap bmp = new Bitmap(tempBmp, 800, 600); bmp.Save(c:\temp\img.bmp, //extension depends on format ImageFormat.Bmp) //These are all the ImageFormats I allow conversion to within the program. Ignore the syntax for a second ;) ImageFormat.Gif) //or ImageFormat.Jpeg) //or ImageFormat.Png) //or ImageFormat.Tiff) //or ImageFormat.Wmf) //or ImageFormat.Bmp)//or ); This is all I'm doing in my image conversion. Just setting the location of where the image should be saved, and passing it an ImageFormat type. I've tested it the best I can, but I'm wondering if I am missing anything in this simple format conversion, or if this is suffice?

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  • An Approach to Incremental Conversion

    - by Paula Speranza-Hadley
    It is common for Oracle Enterprise Taxation and Policy Management (ETPM) customers to implement in multiple phases.  This results in a need for incremental conversion, where part of the data in is production and they are now adding new data.  Some of the new data can be new persons, accounts and their children, but some may be new tax types for existing taxpayers.  This document addresses a methodology for adding incremental data into ETPM.  It does not address every possible data scenario, but offers a path to achieving incremental conversion without the need for code changes.    https://blogs.oracle.com/tax/resource/IncrementalConversion.pdf  

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  • Google Analytics conversion tracking - referrals from payment provider

    - by martynas
    I have a question regarding conversion tracking using Google Analytics. My client uses an external payment service provider - SecureTrading. Problem: All website visitors who would like to make a purchase are taken to a payment form on https://securetrading.net and are redirected back after a successful payment. Google Analytics counts that as a referral and messes up conversion tracking stats. Question: What needs to be changed / added in the payment forms or Google Analytics settings so that the conversions would be assigned to the right traffic sources. Screenshot:

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  • My events don't show up in the goal funnels or conversion funnels

    - by Amit Bens
    I have an event set up on a website and I'd like to track the effect this event has on conversion rate. The event seems to be working fine - I can see it on Top Events with all the labels, etc. But when going into Goal Flow and selecting 'Event Category' these events don't show up. I have this running for about a week. And I have made multiple checks to verify that I have events that triggered the conversion goal. Any clue about what I'm doing wrong?

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  • Wi-Fi won't automatically connect (box in Windows configuration gets unchecked)

    - by greg88
    The checkbox that says "Use windows to configure my wireless network settings" keeps getting unchecked (Wirless Network Connection - Change advanced settings - Wireless networks tab.) How do I stop that from happening? (So the wi-fi will reconnect.) When I manually re-check the box, it automatically connects.) I have a D-Link AirPremier DWL-G550 PCI adapter. I installed the newest driver, 5.3.0.46, and that didn't solve the problem. I took the "Atheros Client Utility" (the program window says "D-Link AirPremier Client Utility" when you run it) out of the start menu, rebooted, and that didn't solve the problem. (That utility puts a signal bar similiar to the one MS Windows puts there, and it's gone now.) The D-Link client utility has an option to automatically connect to preferred networks, but it is greyed out. It is also greyed out if I install the driver and utility right off the D-Link installation CD, so the problem isn't that the utility and driver are incompatible versions. I want to use Windows to handle the connection anyway, as the D-Link utility is garbage. Windows XP SP3 w/all current updates.

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  • Convert PPT to PNG via python

    - by uswaretech
    I want to convert PPT to png, or other image formats using Python. This question has been asked on SO, but essentially recommends running OpenOffice in headless X server, which was an absolute pain last time I used it. (Mostly due to hard to replicate bugs due to OO crashing.) Is there any other way, (Hopefully using Linux CLI utilities only, and pure Python above them?)

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  • How to convert MS doc to pdf

    - by magh
    How to convert doc to pdf using java api. where document contains various formats such as tables in ms word. when converting to pdf using iText. where actual document looks different to converted pdf. please provide any api not an exe installed for converting . must be an open source

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  • Is there a way to force JUnit to fail on ANY unchecked exception, even if swallowed

    - by Uri
    I am using JUnit to write some higher level tests for legacy code that does not have unit tests. Much of this code "swallows" a variety of unchecked exceptions like NullPointerExceptions (e.g., by just printing stack trace and returning null). Therefore the unit test can pass even through there is a cascade of disasters at various points in the lower level code. Is there any way to have a test fail on the first unchecked exception even if they are swallowed? The only alternative I can think of is to write a custom JUnit wrapper that redirects System.err and then analyzes the output for exceptions.

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  • Interface (contract), Generics (universality), and extension methods (ease of use). Is it a right design?

    - by Saeed Neamati
    I'm trying to design a simple conversion framework based on these requirements: All developers should follow a predefined set of rules to convert from the source entity to the target entity Some overall policies should be able to be applied in a central place, without interference with developers' code Both the creation of converters and usage of converter classes should be easy To solve these problems in C# language, A thought came to my mind. I'm writing it here, though it doesn't compile at all. But let's assume that C# compiles this code: I'll create a generic interface called IConverter public interface IConverter<TSource, TTarget> where TSource : class, new() where TTarget : class, new() { TTarget Convert(TSource source); List<TTarget> Convert(List<TSource> sourceItems); } Developers would implement this interface to create converters. For example: public class PhoneToCommunicationChannelConverter : IConverter<Phone, CommunicationChannle> { public CommunicationChannel Convert(Phone phone) { // conversion logic } public List<CommunicationChannel> Convert(List<Phone> phones) { // conversion logic } } And to make the usage of this conversion class easier, imagine that we add static and this keywords to methods to turn them into Extension Methods, and use them this way: List<Phone> phones = GetPhones(); List<CommunicationChannel> channels = phones.Convert(); However, this doesn't even compile. With those requirements, I can think of some other designs, but they each lack an aspect. Either the implementation would become more difficult or chaotic and out of control, or the usage would become truly hard. Is this design right at all? What alternatives I might have to achieve those requirements?

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  • Conversion of DVC-PRO HD 1080, any free tool?

    - by Andrea Ambu
    Is there any free (as in beer, and if it's possible as in bird) tool to convert a dvd in the format DVC-PRO HD 1080 to a normal/standard dvd format so that I can play it on a normal DVD player? EDIT: I changed the wording a bit. We've a video in DVC-PRO HD 1080 but as far as I know it is a proprietary format. We'd like to create a standard dvd out of it. I'm not really in video encoding and dvd conversion. I thought I need to be more precise. VLC currently doesn't support DVC-PRO HD 1080.

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  • Conversion of DVC-PRO HD 1080, any free tool?

    - by Andrea Ambu
    Is there any free (as in beer, and if it's possible as in bird) tool to convert a dvd in the format DVC-PRO HD 1080 to a normal/standard dvd format so that I can play it on a normal DVD player? EDIT: I changed the wording a bit. We've a video in DVC-PRO HD 1080 but as far as I know it is a proprietary format. We'd like to create a standard dvd out of it. I'm not really in video encoding and dvd conversion. I thought I need to be more precise. VLC currently doesn't support DVC-PRO HD 1080.

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  • Java exception translations

    - by user3079275
    Apologies if this has been discussed on other threads but I find it helps clarify my thinking when I am forced to write down my questions. I am trying to properly understand the concept of checked vs unchecked exceptions and exception translation in Java but I am getting confused. So far I understood that checked exceptions are exceptions that need to be always caught in a try/catch block otherwise I get a compile time error. This is to force programmers to think about abnormal situations that might happen at run time (like disk full etc). Is this right? What I did not get was why we have unchecked exceptions, when are they useful? Is it only during development time to debug code that might access an illegal array index etc? This confusion is because I see that Error exceptions are also unchecked as is RunTimeException but its not clear to me why they are both lumped together into an unchecked category?

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  • The Benefits of PSD to HTML Conversion

    In the world of web designing the current trend among the designers is to convert PSD to HTML. If one looks at the reasons for such popularity of the conversion process, he or she would come across not only but multiple reasons.

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  • Importing Excel data into SSIS 2008 using Data Conversion Transformation

    Despite its benefits, SQL Server Integration Services Import Export Wizard has a number of limitations, resulting in part from a new set of rules that eliminate implicit data type conversion mechanisms present in Data Transformation Services. This article discusses a method that addresses such limitations, focusing in particular on importing the content of Excel spreadsheets into SQL Server.

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  • Program for Format Conversion of An Image

    .NET provides extensive support for image conversion. Any image can be processed from one format to another. Most common formats to which .NET have support for are .BMP, .EMF, .GIF, .ICO, .JPG, .PNG, .TIF and .WMF....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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