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• Maven Cobertura: unit test failed but build success

  - by Pavel Drobushevich

  Hi all, I've configured cobertura code coverage in my pom: <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>cobertura-maven-plugin</artifactId> <version>2.4</version> <configuration> <instrumentation> <excludes> <exclude>**/*Exception.class</exclude> </excludes> </instrumentation> <formats> <format>xml</format> <format>html</format> </formats> </configuration> </plugin> And start test by following command: mvn clean cobertura:cobertura But if one of unit test fail Cobertura only log this information and doesn't mark build fail. Tests run: 287, Failures: 1, Errors: 1, Skipped: 0 Flushing results... Flushing results done Cobertura: Loaded information on 139 classes. Cobertura: Saved information on 139 classes. [ERROR] There are test failures. ................................. [INFO] BUILD SUCCESS How to configure Cobertura marks build failed in one of unit test fail? Thanks in advance.

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• Selenium: Can i test if a page loaded a flash app (ie a swf) properly?

  - by Max Williams

  hi all. I'm writing some selenium tests (in rspec for a rails app). One of my pages loads a swf and while i don't want to test the functionality of this flash app i do want to test that it loaded up ok. Is this possible? In case it helps, the html to load the swf is: <OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="800" height="600"> <PARAM NAME=movie VALUE="http://localhost:3000/assets/players/millionaire/millionaire.swf"> <PARAM NAME=quality VALUE="high"> <PARAM NAME=FlashVars VALUE="quizXML=http://localhost:3000/quizzes/371.xml?online=true&myURL=http://localhost:3000/assets/players/millionaire/&online=true"> <param name=width value="800"> <param name=height value="600"> <EMBED src="http://localhost:3000/assets/players/millionaire/millionaire.swf" FlashVars="quizXML=http://localhost:3000/quizzes/371.xml?online=true&myURL=http://localhost:3000/assets/players/millionaire/&online=true" width="800" height="600" quality=high TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer"> </EMBED> </OBJECT> thanks - max

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• Generic ASP.NET MVC Route Conflict

  - by Donn Felker

  I'm working on a Legacy ASP.NET system. I say legacy because there are NO tests around 90% of the system. I'm trying to fix the routes in this project and I'm running into a issue I wish to solve with generic routes. I have the following routes: routes.MapRoute( "DefaultWithPdn", "{controller}/{action}/{pdn}", new { controller = "", action = "Index", pdn = "" }, null ); routes.MapRoute( "DefaultWithClientId", "{controller}/{action}/{clientId}", new { controller = "", action = "index", clientid = "" }, null ); The problem is that the first route is catching all of the traffic for what I need to be routed to the second route. The route is generic (no controller is defined in the constraint in either route definition) because multiple controllers throughout the entire app share this same premise (sometimes we need a "pdn" sometimes we need a "clientId"). How can I map these generic routes so that they go to the proper controller and action, yet not have one be too greedy? Or can I at all? Are these routes too generic (which is what I'm starting to believe is the case). My only option at this point (AFAIK) is one of the following: In the contraints, apply a regex to match the action values like: (foo|bar|biz|bang) and the same for the controller: (home|customer|products) for each controller. However, this has a problem in the fact that I may need to do this: ~/Foo/Home/123 // Should map to "DefaultwithPdn" ~/Foo/Home/abc // Should map to "DefaultWithClientId" Which means that if the Foo Controller has an action that takes a pdn and another action that takes a clientId (which happens all the time in this app), the wrong route is chosen. To hardcode these contstraints into each possible controller/action combo seems like a lot of duplication to me and I have the feeling I've been looking at the problem for too long so I need another pair of eyes to help out. Can I have generic routes to handle this scenario? Or do I need to have custom routes for each controller with constraints applied to the actions on those routes? Thanks

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• Scope of "library" methods

  - by JS

  Hello, I'm apparently laboring under a poor understanding of Python scoping. Perhaps you can help. Background: I'm using the 'if name in "main"' construct to perform "self-tests" in my module(s). Each self test makes calls to the various public methods and prints their results for visual checking as I develop the modules. To keep things "purdy" and manageable, I've created a small method to simplify the testing of method calls: def pprint_vars(var_in): print("%s = '%s'" % (var_in, eval(var_in))) Calling pprint_vars with: pprint_vars('some_variable_name') prints: some_variable_name = 'foo' All fine and good. Problem statement: Not happy to just KISS, I had the brain-drizzle to move my handy-dandy 'pprint_vars' method into a separate file named 'debug_tools.py' and simply import 'debug_tools' whenever I wanted access to 'pprint_vars'. Here's where things fall apart. I would expect import debug_tools foo = bar debug_tools.pprint_vars('foo') to continue working its magic and print: foo = 'bar' Instead, it greets me with: NameError: name 'some_var' is not defined Irrational belief: I believed (apparently mistakenly) that import puts imported methods (more or less) "inline" with the code, and thus the variable scoping rules would remain similar to if the method were defined inline. Plea for help: Can someone please correct my (mis)understanding of scoping regards imports? Thanks, JS

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• Is it safe to read regular expressions from a file?

  - by Zilk

  Assuming a Perl script that allows users to specify several text filter expressions in a config file, is there a safe way to let them enter regular expressions as well, without the possibility of unintended side effects or code execution? Without actually parsing the regexes and checking them for problematic constructs, that is. There won't be any substitution, only matching. As an aside, is there a way to test if the specified regex is valid before actually using it? I'd like to issue warnings if something like /foo (bar/ was entered. Thanks, Z. EDIT: Thanks for the very interesting answers. I've since found out that the following dangerous constructs will only be evaluated in regexes if the use re 'eval' pragma is used: (?{code}) (??{code}) ${code} @{code} The default is no re 'eval'; so unless I'm missing something, it should be safe to read regular expressions from a file, with the only check being the eval/catch posted by Axeman. At least I haven't been able to hide anything evil in them in my tests. Thanks again. Z.

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• Formating Date in Freemarker to say "Today", "Yesterday", etc.

  - by egervari

  Is there a way in freemarker to compare dates to test if the date is today or yesterday... or do I have to write code in Java to do these tests? I basically want to do this: <#------------------------------------------------------------------------------ formatDate -------------------------------------------------------------------------------> <#macro formatDate date showTime=true> <#if date??> <span class="Date"> <#if date?is_today> Today <#elseif date?is_yesterday> Yesterday <#else> ${date?date} </#if> </span> <#if showTime> <span class="Time">${date?time}</span> </#if> </#if> </#macro> EDIT: My best guess to implement this is to pass "today" and "yesterday" into the model for the pages that use this function and then compare the date values against these 2 objects in the model. I am out of out of options, but I'd rather not have to do this for every page that uses this macro. Any other options that are nicer? <#if date??> <span class="Date"> <#if date?date?string.short == today?date?string.short> Today <#elseif date?date?string.short == yesterday?date?string.short> Yesterday <#else> ${date?date} </#if> </span> <#if showTime> <span class="Time">${date?time}</span> </#if> </#if>

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• Start dependent application with eunit

  - by ruslander

  I start lager as a dependent application when I run a unit test but for some reason the code under test does not see it. -module(main_tests). -include_lib("eunit/include/eunit.hrl"). main_test_() -> {foreach, fun distr_setup/0, fun distr_cleanup/1, [ fun must_retain/1 ]}. must_retain(_) -> {"Should do ping pong when is fully initialized", fun() -> ?assertEqual(pong, abuse_counter:ping()) end}. %%------------------------------------------------------------------ distr_setup() -> abuse_counter:start_link(), ok. distr_cleanup(_) -> abuse_counter:stop(), ok. Here is the output of the log which is complaining that lager is not defined {undef,[{lager,info,["up and running"],[]} though in the run output is definitely there. Here is how I run it: erl -pa ebin/ ../../deps/*/ebin -s lager -eval 'eunit:test(main_tests,[verbose]), init:stop().' Fails with the output Eshell V5.10.2 (abort with ^G) 1> 17:13:31.506 [info] Application lager started on node nonode@nohost ======================== EUnit ======================== module 'main_tests' undefined 17:13:31.528 [error] CRASH REPORT Process <0.57.0> with 1 neighbours exited with reason: call to undefined function lager:info("up and running") in gen_server:init_it/6 line 328 *unexpected termination of test process* ::**{undef,[{lager,info,["up and running"],[]}**, {abuse_counter,init,1,[{file,"src/abuse_counter.erl"},{line,37}]}, {gen_server,init_it,6,[{file,"gen_server.erl"},{line,304}]}, {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,239}]}]} ======================================================= Failed: 0. Skipped: 0. Passed: 0. One or more tests were cancelled. Already spent 3-4h hours on google and stack overflow but nothing seems to work. One option is to hide this call behind a ?INFO(Mgs) macro but do not like the idea. Any help will be highly appreciated.

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• If setUpBeforeClass() fails, test failures are hidden in PHPUnit's JUnit XML output

  - by Adam Monsen

  If setUpBeforeClass() throws an exception, no failures or errors are reported in the PHPUnit's JUnit XML output. Why? Example test class: <?php class Test extends PHPUnit_Framework_TestCase { public static function setUpBeforeClass() { throw new \Exception('masks all failures in xml output'); } public function testFoo() { $this->fail('failing'); } } Command line: phpunit --verbose --log-junit out.xml Test.php Console output: PHPUnit 3.6.10 by Sebastian Bergmann. E Time: 0 seconds, Memory: 3.25Mb There was 1 error: 1) Test Exception: masks all failures in xml output /tmp/pu/Test.php:6 FAILURES! Tests: 0, Assertions: 0, Errors: 1. JUnit XML output: <?xml version="1.0" encoding="UTF-8"?> <testsuites> <testsuite name="Test" file="/tmp/phpunit-broken/Test.php"/> </testsuites> More info: $ php --version PHP 5.3.10-1ubuntu3.1 with Suhosin-Patch (cli) (built: May 4 2012 02:21:57) Copyright (c) 1997-2012 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies with Xdebug v2.1.0, Copyright (c) 2002-2010, by Derick Rethans

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• NUnit for VS has suddenly bombed.. Anyone else experience this?

  - by Ian P

  I'm getting the following set of errors in a project, that previously worked fine, from NUnit for VS when I try to run either individual or all of the tests in a given solution. Error loading C:\Path to Application\Application\Application.ApplicationTests\bin\Debug\Application.ApplicationTests.dll: The method or operation is not implemented. Error loading C:\Path to Application\Application\Application.FileDetectorTests\bin\Debug\FileDetectorTests.dll: The method or operation is not implemented. Error loading C:\Path to Application\Application\Application.PresentationTests\bin\Debug\Application.PresentationTests.dll: The method or operation is not implemented. Error loading C:\Path to Application\Application\Application.DomainTests\bin\Debug\Application.DomainTests.dll: The method or operation is not implemented. I've verified that each project is setup with the appropriate ProjectTypeGuids for a test project in the Project file. I've tried uninstalling / reinstalling NUnit for VS, but have had no luck. Does anyone have any advice as to how I might start troubleshooting this? If I open each individual test project outside of the main solution (that includes all projects, by the way,) and save it as it's own solution, they run just fine. Nothing of note has changed since this stopped working. Thanks! Ian

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• Using jQuery with Windows 8 Metro JavaScript App causes security error

  - by patridge

  Since it sounded like jQuery was an option for Metro JavaScript apps, I was starting to look forward to Windows 8 dev. I installed Visual Studio 2012 Express RC and started a new project (both empty and grid templates have the same problem). I made a local copy of jQuery 1.7.2 and added it as a script reference. <!-- SomeTestApp references --> <link href="/css/default.css" rel="stylesheet" /> <script src="/js/jquery-1.7.2.js"></script> <script src="/js/default.js"></script> Unfortunately, as soon as I ran the resulting app it tosses out a console error: HTML1701: Unable to add dynamic content ' a' A script attempted to inject dynamic content, or elements previously modified dynamically, that might be unsafe. For example, using the innerHTML property to add script or malformed HTML will generate this exception. Use the toStaticHTML method to filter dynamic content, or explicitly create elements and attributes with a method such as createElement. For more information, see http://go.microsoft.com/fwlink/?LinkID=247104. I slapped a breakpoint in a non-minified version of jQuery and found the offending line: div.innerHTML = " <link/><table></table><a href='/a' style='top:1px;float:left;opacity:.55;'>a</a><input type='checkbox'/>"; Apparently, the security model for Metro apps forbids creating elements this way. This error doesn't cause any immediate issues for the user, but given its location, I am worried it will cause capability-discovery tests in jQuery to fail that shouldn't. I definitely want jQuery $.Deferred for making just about everything easier. I would prefer to be able to use the selector engine and event handling systems, but I would live without them if I had to. How does one get the latest jQuery to play nicely with Metro development?

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• File descriptor limits and default stack sizes

  - by Charles

  Where I work we build and distribute a library and a couple complex programs built on that library. All code is written in C and is available on most 'standard' systems like Windows, Linux, Aix, Solaris, Darwin. I started in the QA department and while running tests recently I have been reminded several times that I need to remember to set the file descriptor limits and default stack sizes higher or bad things will happen. This is particularly the case with Solaris and now Darwin. Now this is very strange to me because I am a believer in 0 required environment fiddling to make a product work. So I am wondering if there are times where this sort of requirement is a necessary evil, or if we are doing something wrong. Edit: Great comments that describe the problem and a little background. However I do not believe I worded the question well enough. Currently, we require customers, and hence, us the testers, to set these limits before running our code. We do not do this programatically. And this is not a situation where they MIGHT run out, under normal load our programs WILL run out and seg fault. So rewording the question, is requiring the customer to change these ulimit values to run our software to be expected on some platforms, ie, Solaris, Aix, or are we as a company making it to difficult for these users to get going? Bounty: I added a bounty to hopefully get a little more information on what other companies are doing to manage these limits. Can you set these pragmatically? Should we? Should our programs even be hitting these limits or could this be a sign that things might be a bit messy under the covers? That is really what I want to know, as a perfectionist a seemingly dirty program really bugs me.

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• how do i implement / build / create an 'in memory database' for my unit test

  - by Michel

  Hi all, i've started unit testing a while ago and as turned out i did more regression testing than unit testing because i also included my database layer thus going to the database verytime. So, implemented Unity to inject a fake database layer, but i of course want to store some data, and the main opinion was: "create an in-memory database" But what is that / how do i implement that? Main question is: i think i have to fake the database layer, but doesn't that make me create a 'simple database' myself or: how can i keep it simple and not rebuilding Sql Server just for my unit tests :) At the end of this question i'll give an explanation of the situation i got in on the project i just started on, and i was wondering if this was the way to go. Michel Current situation i've seen at this client is that testdata is contained in XML files, and there is a 'fake' database layer that connects all the xml files together. For the real database we're using the entity framework, and this works very simple. And now, in the 'fake' layer, i have top create all kind of classes to load, save, persist etc. the data. It sounds weird that there is so much work in the fake layer, and so little in the real layer. I hope this all makes sense :)

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• Does "epsilon" really guarantees anything in floating-point computations?!

  - by Michal Czardybon

  To make the problem short let's say I want to compute expression: a / (b - c) on float's. To make sure the result is meaningful, I can check if 'b' and 'c' are inequal: float eps = std::numeric_limits<float>::epsilon(); if ((b - c) > EPS || (c - b) > EPS) { return a / (b - c); } but my tests show it is not enough to guarantee either meaningful results nor not failing to provide a result if it is possible. Case 1: a = 1.0f; b = 0.00000003f; c = 0.00000002f; Result: The if condition is NOT met, but the expression would produce a correct result 100000008 (as for the floats' precision). Case 2: a = 1e33f; b = 0.000003; c = 0.000002; Result: The if condition is met, but the expression produces not a meaningful result +1.#INF00. I found it much more reliable to check the result, not the arguments: const float INF = numeric_limits<float>::infinity(); float x = a / (b - c); if (-INF < x && x < INF) { return x; } But what for is the epsilon then and why is everyone saying epsilon is good to use?

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• Namespace constraint with generic class decleration

  - by SomeGuy

  Good afternoon people, I would like to know if (and if so how) it is possible to define a namespace as a constraint parameter in a generic class declaration. What I have is this: namespace MyProject.Models.Entities <-- Contains my classes to be persisted in db namespace MyProject.Tests.BaseTest <-- Obvious i think Now the decleration of my 'BaseTest' class looks like so; public class BaseTest<T> This BaseTest does little more (at the time of writing) than remove all entities that were added to the database during testing. So typically I will have a test class declared as: public class MyEntityRepositoryTest : BaseTest<MyEntity> What i would LIKE to do is something similar to the following: public class BaseTest<T> where T : <is of the MyProject.Models.Entities namespace> Now i am aware that it would be entirely possible to simply declare a 'BaseEntity' class from which all entities created within the MyProject.Models.Entities namespace will inherit from; public class BaseTest<T> where T : MyBaseEntity but...I dont actually need to, or want to. Plus I am using an ORM and mapping entities with inheritance, although possible, adds a layer of complexity that is not required. So, is it possible to constrain a generic class parameter to a namespace and not a specific type ? Thank you for your time.

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• My ifelse statement's result depends on the actions for true/false?

  - by Antal

  Currently I am building a route for a truck to drive inside my netlogo-land. When the truck is next to the shop-patch where it should deliver, the truck needs to change its actions. However my if or ifelse statement does not seem to respond well and the answer depends on the output. With some tests: turtles ifelse ((patch (first dirx) (first diry)) = one-of neighbors4) [write "11"] [write "22"] "11" turtles ifelse ((patch (first dirx) (first diry)) = one-of neighbors4) [write "111"] [write "122"] "122" turtles ifelse (patch (first dirx) (first diry)) = one-of neighbors4 [write "111"] [write "122"] "122" turtles ifelse (patch (first dirx) (first diry)) = one-of neighbors4 [write "11"] [write "12"] "12" turtles ifelse (patch (first dirx) (first diry)) = one-of neighbors4 [write "11"] [write "22"] "11" Please note that during this time I do not move my truck, I use the command center to ask these questions (from turtle truck perspective). I am very confused about this. As the only thing I change is the action (what to write). This should not impact the true/false statement itself. Does anybody have any clue what is going on here and why the ifelse responds strange?

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• Endianness and C API's: Specifically OpenSSL.

  - by Hassan Syed

  I have an algorithm that uses the following OpenSSL calls: HMAC_update() / HMAC_final() // ripe160 EVP_CipherUpdate() / EVP_CipherFinal() // cbc_blowfish These algorithm take a unsigned char * into the "plain text". My input data is comes from a C++ std::string::c_str() which originate from a protocol buffer object as a encoded UTF-8 string. UTF-8 strings are meant to be endian neutrial. However I'm a bit paranoid about how OpenSSL may perform operations on the data. My understanding is that encryption algorithms work on 8-bit blocks of data, and if a unsigned char * is used for pointer arithmetic when the operations are performed the algorithms should be endian neutral and I do not need to worry about anything. My uncertainty is compounded by the fact that I am working on a little-endian machine and have never done any real cross-architecture programming. My beliefs/reasoning are/is based on the following two properties std::string (not wstring) internally uses a 8-bit ptr and a the resulting c_str() ptr will itterate the same way regardless of the CPU architecture. Encryption algorithms are either by design, or by implementation, endian neutral. I know the best way to get a definitive answer is to use QEMU and do some cross-platform unit tests (which I plan to do). My question is a request for comments on my reasoning, and perhaps will assist other programmers when faced with similar problems.

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• Declare models elsewhere than in "models.py"

  - by sebpiq

  Hi ! I have an application that splits models into different files. Actually the folder looks like : >myapp __init__.py models.py >hooks ... ... myapp don't care about what's in the hooks, folder, except that there are models, and that they have to be declared somehow. So, I put this in myapp.__init__.py : from django.conf import settings for hook in settings.HOOKS : try : __import__(hook) except ImportError as e : print "Got import err !", e #where HOOKS = ("myapp.hooks.a_super_hook1", ...) The problem is that it doesn't work when I run syncdb(and throws some strange "Got import err !"... strange considering that it's related to another module of my program that I don't even import anywhere :/ ) ! So I tried successively : 1) for hook in settings.HOOKS : try : exec ("from %s import *" % hook) doesn't work either : syncdb doesn't install the models in hooks 2) from myapp.hooks.a_super_hook1 import * This works 3) exec("from myapp.hooks.a_super_hook1 import *") This works to So I checked that in the test 1), the statement executed is the same than in tests 2) and 3), and it is exactly the same ... Any idea ???

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• Java client server sending bytes receiver listens indefinitely

  - by Rob

  Hello, I'm trying to write a Java program for Windows that involves communication with a server program located on a foreign machine.My program successfully connects to the server, successfully writes a byte array to it, and waits for a response. I know that the server is printing bytes (the response) back to me one byte at a time. I've tried using a DataInputStream object with various methods (read, readByte etc.), I've tried using a BufferedReader object with its methods (read, readLine etc.) but all the reader objects and various methods that I've used all come up against the same problem. The bytes are being successfully read (each time a byte or bytes are read, I can print them to the console, and they are what I'd expect them to be). The problem is that my reader doesn't know when to stop reading. Even if the server has sent all its bytes, the reader function on my end waits for more data, indefinitely, and so the program hangs at the read function. This problem seems to affect all the techniques that I have tried. I've been running tests with a simple client program and server program, each about 40 or 50 lines long, where the client connects to the server, and sends some bytes to it. All the techniques I've tried for the server reader result in the same problem mentioned above (the server hangs waiting for more input from the client, even though it has sent all its data). I'm really desperate for some help on this. It's important that I get this program finished soon, and it's basically complete except for this communication issue. Any help is much appreciated! -Rob

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• Spring + iBatis + Hessian caching

  - by ILya

  Hi. I have a Hessian service on Spring + iBatis working on Tomcat. I'm wondering how to cache results... I've made the following config in my sqlmap file: <sqlMap namespace="Account"> <cacheModel id="accountCache" type="MEMORY" readOnly="true" serialize="false"> <flushInterval hours="24"/> <flushOnExecute statement="Account.addAccount"/> <flushOnExecute statement="Account.deleteAccount"/> <property name="reference-type" value="STRONG" /> </cacheModel> <typeAlias alias="Account" type="domain.Account" /> <select id="getAccounts" resultClass="Account" cacheModel="accountCache"> fix all; select id, name, pin from accounts; </select> <select id="getAccount" parameterClass="Long" resultClass="Account" cacheModel="accountCache"> fix all; select id, name, pin from accounts where id=#id#; </select> <insert id="addAccount" parameterClass="Account"> fix all; insert into accounts (id, name, pin) values (#id#, #name#, #pin#); </insert> <delete id="deleteAccount" parameterClass="Long"> fix all; delete from accounts where id = #id#; </delete> </sqlMap> Then i've done some tests... I have a hessian client application. I'm calling getAccounts several times and after each call it's a query to DBMS. How to make my service to query DBMS only a first time (after server restart) getAccounts called and for the following calls to use a cache?

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• event listener says NetStream.Play.Start but I see no video

  - by Curtis

  I'm trying to test out the Adobe Media Server, and I'm following some tutorials in order to stream a video. I have a NetConnection which successfully connects to the application on the server, then I have the code below. It looks like it's supposed to play a video, but it doesn't. It creates the video object as a black square in the top left corner, and the event.info.code says NetStream.Play.Start, but I don't see the video playing. case "NetConnection.Connect.Success": var v:Video = new Video(); v.width=200; v.height=200; v.x=0; v.y=0; v.visible=true; v.opaqueBackground=false; stage.addChild(v); var ns:NetStream = new NetStream(nc); ns.addEventListener(NetStatusEvent.NET_STATUS,netStatusHandler); v.attachNetStream(ns); ns.play("mp4:polymorphics.f4v"); I can also try ns.play("rtmp://localhost/vod/mp4:tests/polymorphics.f4v"); but that gives me a Stream Not Found error The lines that begin with "ns" means that they're generated by my NetStream listener, as opposed to my NetConnection listener. Connecting... connected is: true event.info.level: status event.info.code: NetConnection.Connect.Success onReply recieved value: Hello, World! ns connected is: true ns event.info.level: status ns event.info.code: NetStream.Play.Reset ns connected is: true ns event.info.level: status ns event.info.code: NetStream.Play.Start

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• Spring: Bean fails to read off values from external Properties file when using @Value annotation

  - by daydreamer

  XML Configuration <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd"> <util:properties id="mongoProperties" location="file:///storage/local.properties" /> <bean id="mongoService" class="com.business.persist.MongoService"></bean> </beans> and MongoService looks like @Service public class MongoService { @Value("#{mongoProperties[host]}") private String host; @Value("#{mongoProperties[port]}") private int port; @Value("#{mongoProperties[database]}") private String database; private Mongo mongo; private static final Logger LOGGER = LoggerFactory.getLogger(MongoService.class); public MongoService() throws UnknownHostException { LOGGER.info("host=" + host + ", port=" + port + ", database=" + database); mongo = new Mongo(host, port); } public void putDocument(@Nonnull final DBObject document) { LOGGER.info("inserting document - " + document.toString()); mongo.getDB(database).getCollection(getCollectionName(document)).insert(document, WriteConcern.SAFE); } I write my MongoServiceTest as public class MongoServiceTest { @Autowired private MongoService mongoService; public MongoServiceTest() throws UnknownHostException { mongoRule = new MongoRule(); } @Test public void testMongoService() { final DBObject document = DBContract.getUniqueQuery("001"); document.put(DBContract.RVARIABLES, "values"); document.put(DBContract.PVARIABLES, "values"); mongoService.putDocument(document); } and I see failures in tests as 12:37:25.224 [main] INFO c.s.business.persist.MongoService - host=null, port=0, database=null java.lang.NullPointerException at com.business.persist.MongoServiceTest.testMongoService(MongoServiceTest.java:40) Which means bean was not able to read the values from local.properties local.properties ### === MongoDB interaction === ### host="127.0.0.1" port=27017 database=contract How do I fix this? update It doesn't seem to read off the values even after creating setters/getters for the fields. I am really clueless now. How can I even debug this issue? Thanks much!

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• How can I get JUnit test (driven from Ant script) to dump the stack of exception that causes failure

  - by Matt Wang

  We run JUnit test from Ant script, as follows. When the test failed, I expect it to output the stack dump of the exception that casuses the failure, but it doesn't. Is there any trick to get it dumped? <target description="Run JUnit tests" name="run-junit" depends="build-junit"> <copy file="./AegisLicense.txt" tofile="test/junit/classes/AegisLicense.txt" overwrite="true"/> <junit printsummary="yes" haltonfailure="no" fork="yes" forkmode="once" failureproperty="run-aegis-junit-failed" showoutput="yes" filtertrace="off"> <classpath refid="Aegisoft.testsupport.classpath"/> <classpath> <pathelement location="test/junit/classes"/> </classpath> <batchtest> <fileset dir="test/junit/src"> <include name="**"/> </fileset> </batchtest> </junit> <fail

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• Unable to create a breakpoint in Eclipse and Tomcat

  - by Traroth

  Since yesterday, I get a strange error message when I start my Tomcat (6.0.35) under Eclipse Juno (build 20120614-1722): Among the things I tried in order to get rid of the error: Check in Preferences - Java - Compiler if all "Classfile Generation" checkboxes where checked. I did that for both general preferences and project preference Uncheck them, build, check them build again (found on another question) Add org.eclipse.jdt.core.compiler.debug.lineNumber=generate to my .settings/org.eclipse.jdt.core.prefs file Use a new CVS checkout (same symptoms) And now, I don't know what to do anymore. The problem is really stopping me from get anything done. I can't work anymore. Crazy is: the problem doesn't happen on every class, only on some of them. Neither does it happen on my other Eclipse projects. And it didn't happen before yesterday, even if I can't remeber having done anything weird. Actually, I have never seen a problem like this in almost 10 years I'm using Eclipse... If you have any idea, I would be really grateful... Edit: I also tried to ignore the message and go on with my tests: If I create another breakpoint upstream from my problematic class, when I enter this problematic class, it tries to open a $Proxy132 class, which means it actually opens an empty page, with a source not found message

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• java.math.BigInteger pow(exponent) question

  - by Jan Kraus

  Hi, I did some tests on pow(exponent) method. Unfortunately, my math skills are not strong enough to handle the following problem. I'm using this code: BigInteger.valueOf(2).pow(var); Results: var | time in ms 2000000 | 11450 2500000 | 12471 3000000 | 22379 3500000 | 32147 4000000 | 46270 4500000 | 31459 5000000 | 49922 See? 2,500,000 exponent is calculated almost as fast as 2,000,000. 4,500,000 is calculated much faster then 4,000,000. Why is that? To give you some help, here's the original implementation of BigInteger.pow(exponent): public BigInteger pow(int exponent) { if (exponent < 0) throw new ArithmeticException("Negative exponent"); if (signum==0) return (exponent==0 ? ONE : this); // Perform exponentiation using repeated squaring trick int newSign = (signum<0 && (exponent&1)==1 ? -1 : 1); int[] baseToPow2 = this.mag; int[] result = {1}; while (exponent != 0) { if ((exponent & 1)==1) { result = multiplyToLen(result, result.length, baseToPow2, baseToPow2.length, null); result = trustedStripLeadingZeroInts(result); } if ((exponent >>>= 1) != 0) { baseToPow2 = squareToLen(baseToPow2, baseToPow2.length, null); baseToPow2 = trustedStripLeadingZeroInts(baseToPow2); } } return new BigInteger(result, newSign); }

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• IntelliJ Doesn't Notice Changes in Interface

  - by yar

  [I've decided to give IntelliJ another go (to replace Eclipse), since its Groovy support is supposed to be the best. But back to Java...] I have an Interface that defines a constant public static final int CHANNEL_IN = 1; and about 20 classes in my Module that implement that interface. I've decided that this constant was a bad idea so I did what I do in Eclipse: I deleted the entire line. This should cause the Project tree to light up like a Christmas tree and all classes that implement that interface and use that constant to break. Instead, this is not happening. If I don't actually double-click on the relevant classes -- which I find using grep -- the module even builds correctly (using Build - Make Module). If I double-click on a relevant class, the error is shown both in the Project Tree and in the Editor. I am not able to replicate this behavior in small tests, but in large modules it works (incorrectly) this way. Is there some relevant setting in IntelliJ for this?

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