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  • Blocking on DBCP connection pool (open and close connnection). Is database connection pooling in OpenEJB pluggable?

    - by topchef
    We use OpenEJB on Tomcat (used to run on JBoss, Weblogic, etc.). While running load tests we experience significant performance problems with handling JMS messages (queues). Problem was localized to blocking on database connection pool getting or releasing connection to the pool. Blocking prevented concurrent MDB instances (threads) from running hence performance suffered 10-fold and worse. The same code used to run on application servers (with their respective connection pool implementations) with no blocking at all. Example of thread blocked: Name: JMS Resource Adapter-worker-23 State: BLOCKED on org.apache.commons.pool.impl.GenericObjectPool@1ea6b4a owned by: JMS Resource Adapter-worker-19 Total blocked: 18,426 Total waited: 0 Stack trace: org.apache.commons.pool.impl.GenericObjectPool.returnObject(GenericObjectPool.java:916) org.apache.commons.dbcp.PoolableConnection.close(PoolableConnection.java:91) - locked org.apache.commons.dbcp.PoolableConnection@1bcba8 org.apache.commons.dbcp.managed.ManagedConnection.close(ManagedConnection.java:147) com.xxxxx.persistence.DbHelper.closeConnection(DbHelper.java:290) .... Couple of questions. I am almost certain that some transactional attributes and properties contribute to this blocking, but MDBs are defined as non-transactional (we use both annotations and ejb-jar.xml). Some EJBs do use container-managed transactions though (and we can observe blocking there as well). Are there any DBCP configurations that may fix blocking? Is DBCP connection pool implementation replaceable in OpenEJB? How easy (difficult) to replace it with another library? Just in case this is how we define data source in OpenEJB (openejb.xml): <Resource id="MyDataSource" type="DataSource"> JdbcDriver oracle.jdbc.driver.OracleDriver JdbcUrl ${oracle.jdbc} UserName ${oracle.user} Password ${oracle.password} JtaManaged true InitialSize 5 MaxActive 30 ValidationQuery SELECT 1 FROM DUAL TestOnBorrow true </Resource>

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  • How to get around the jslint error 'Don't make functions within a loop.'

    - by Ernelli
    I am working on making all of our JS code pass through jslint, sometimes with a lot of tweaking with the options to get legacy code pass for now on with the intention to fix it properly later. There is one thing that jslint complains about that I do not have a workround for. That is when using constructs like this, we get the error 'Don't make functions within a loop.' for (prop in newObject) { // Check if we're overwriting an existing function if (typeof newObject[prop] === "function" && typeof _super[prop] === "function" && fnTest.test(newObject[prop])) { prototype[prop] = (function (name, func) { return function () { var result, old_super; old_super = this._super; this._super = _super[name]; result = func.apply(this, arguments); this._super = old_super; return result; }; })(prop, newObject[prop]); } This loop is part of a JS implementation of classical inheritance where classes that extend existing classes retain the super property of the extended class when invoking a member of the extended class. Just to clarify, the implementation above is inspired by this blog post by John Resig. But we also have other instances of functions created within a loop. The only workaround so far is to exclude these JS files from jslint, but we would like to use jslint for code validation and syntax checking as part of our continuous integration and build workflow. Is there a better way to implement functionality like this or is there a way to tweak code like this through jslint?

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  • Ember model is gone when I use the renderTemplate hook

    - by Mickael Caruso
    I have a single template - editPerson.hbs <form role="form"> FirstName: {{input type="text" value=model.firstName }} <br/> LastName: {{input type="text" value=model.lastName }} </form> I want to render this template when the user wants to edit an existing person or create a new person. So, I set up routes: App.Router.map(function(){ this.route("createPerson", { path: "/person/new" }); this.route("editPerson", { path: "/person/:id}); // other routes not show for brevity }); So, I define two routes - one for create and one for edit: App.CreatePersonRoute = Ember.Route.extend({ renderTemplate: function(){ this.render("editPerson", { controller: "editPerson" }); }, model: function(){ return {firstName: "John", lastName: "Smith" }; } }); App.EditPersonRoute = Ember.Route.extend({ model: function(id){ return {firstName: "John Existing", lastName: "Smith Existing" }; } }); So, I hard-code the models. I'm concerned about the createPerson route. I'm telling it to render the editPersonTemplate and to use the editPerson controller (which I don't show because I don't think it matters - but I made one, though.) When I use renderTemplate, I lose the model John Smith, which in turn, won't display on the editTemplate on the web page. Why? I "fixed" this by creating a separate and identical (to editPerson.hbs) createPerson.hbs, and removing the renderTemplate hook in the CreatePerson. It works as expected, but I find it somewhat troubling to have a separate and identical template for the edit and create cases. I looked everywhere for how to properly do this, and I found no answers.

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  • What specific features of LabView are frustrating to you?

    - by Underflow
    Please bear with me: this isn't a language debate or a flame. It's a real request for opinions. Occasionally, I have to help educate a traditional text coder in how to think in LabVIEW (LV). Often during this process, I get to hear about how LV sucks. Rarely is this insight accompanied by rational observations other than "Language X is just so much better!". While this statement is satisfying to them, it doesn't help me understand what is frustrating them. So, for those of you with LabVIEW and text language experience, what specific things about LV drive you nuts? ------ Summaries ------- Thanks for all the answers! Some of the issues are answered in the comments below, some exist on other sites, and some are just genuine problems with LV. In the spirit of the original question, I'm not going to try to answer all of these here: check LAVA or NI's website, and you'll be pleasantly surprised at how many of these things can be overcome. Unintentional concurrency No access to tradition text manipulation tools Binary-only source code control Difficult to branch and merge Too many open windows Text has cleaner/clearer/more expressive syntax Clean coding requires a lot of time and manipulation Large, difficult to access API/palette system Mouse required File namespacing: no duplicate files with the same name in memory LV objects are natively by-value only Requires dev environment to view code Lack of zoom Slow startup Memory pig "Giant" code is difficult to work with UI lockup is easy to do Trackpads and LV don't mix well String manipulation is graphically bloated Limited UI customization "Hidden" primitives (yes, these exist) Lack of official metaprogramming capability (not for much longer, though) Lack of unicode support [1]: http://www.lavag.org LAVA

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  • How to set the position of a sprite within a box2d body?

    - by Frank
    Basically I have 2 polygons for my body. When I add a sprite for userData, the position of the texture isn't where I want it to be. What I want to do is adjust the position of the texture within the body. Here's the code sample of where I am setting this: CCSpriteSheet *sheet = (CCSpriteSheet*) [self getChildByTag:kTagSpriteSheet]; CCSprite *pigeonSprite = [CCSprite spriteWithSpriteSheet:sheet rect:CGRectMake(0,0,40,32)]; [sheet addChild:pigeonSprite z:0 tag:kPigeonSprite]; pigeonSprite.position = ccp( p.x, p.y); bodyDef.position.Set(p.x/PTM_RATIO, p.y/PTM_RATIO); bodyDef.userData = sprite; b2Body *body = world->CreateBody(&bodyDef); b2CircleShape dynamicCircle; dynamicCircle.m_radius = .25f; dynamicCircle.m_p.Set(0.0f, 1.0f); // Define the dynamic body fixture. b2FixtureDef circleDef; circleDef.shape = &dynamicCircle; circleDef.density = 1.0f; circleDef.friction = 0.3f; body->CreateFixture(&circleDef); b2Vec2 vertices[3]; vertices[0].Set(-0.5f, 0.0f); vertices[1].Set(0.5f, 0.0f); vertices[2].Set(0.0f, 1.0f); b2PolygonShape triangle; triangle.Set(vertices, 3); b2FixtureDef triangleDef1; triangleDef1.shape = &triangle; triangleDef1.density = 1.0f; triangleDef1.friction = 0.3f; body->CreateFixture(&triangleDef1);

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  • Q on Python serialization/deserialization

    - by neil
    What chances do I have to instantiate, keep and serialize/deserialize to/from binary data Python classes reflecting this pattern (adopted from RFC 2246 [TLS]): enum { apple, orange } VariantTag; struct { uint16 number; opaque string<0..10>; /* variable length */ } V1; struct { uint32 number; opaque string[10]; /* fixed length */ } V2; struct { select (VariantTag) { /* value of selector is implicit */ case apple: V1; /* VariantBody, tag = apple */ case orange: V2; /* VariantBody, tag = orange */ } variant_body; /* optional label on variant */ } VariantRecord; Basically I would have to define a (variant) class VariantRecord, which varies depending on the value of VariantTag. That's not that difficult. The challenge is to find a most generic way to build a class, which serializes/deserializes to and from a byte stream... Pickle, Google protocol buffer, marshal is all not an option. I made little success with having an explicit "def serialize" in my class, but I'm not very happy with it, because it's not generic enough. I hope I could express the problem. My current solution in case VariantTag = apple would look like this, but I don't like it too much import binascii import struct class VariantRecord(object): def __init__(self, number, opaque): self.number = number self.opaque = opaque def serialize(self): out = struct.pack('>HB%ds' % len(self.opaque), self.number, len(self.opaque), self.opaque) return out v = VariantRecord(10, 'Hello') print binascii.hexlify(v.serialize()) >> 000a0548656c6c6f Regards

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  • "image contains error", trying to create and display images using google app engine

    - by bert
    Hello all the general idea is to create a galaxy-like map. I run into problems when I try to display a generated image. I used Python Image library to create the image and store it in the datastore. when i try to load the image i get no error on the log console and no image on the browser. when i copy/paste the image link (including datastore key) i get a black screen and the following message: The image “view-source:/localhost:8080/img?img_id=ag5kZXZ-c3BhY2VzaW0xMnINCxIHTWFpbk1hcBgeDA” cannot be displayed because it contains errors. the firefox error console: Error: Image corrupt or truncated: /localhost:8080/img?img_id=ag5kZXZ-c3BhY2VzaW0xMnINCxIHTWFpbk1hcBgeDA import cgi import datetime import urllib import webapp2 import jinja2 import os import math import sys from google.appengine.ext import db from google.appengine.api import users from PIL import Image #SNIP #class to define the map entity class MainMap(db.Model): defaultmap = db.BlobProperty(default=None) #SNIP class Generator(webapp2.RequestHandler): def post(self): #SNIP test = Image.new("RGBA",(100, 100)) dMap=MainMap() dMap.defaultmap = db.Blob(str(test)) dMap.put() #SNIP result = db.GqlQuery("SELECT * FROM MainMap LIMIT 1").fetch(1) if result: print"item found<br>" #debug info if result[0].defaultmap: print"defaultmap found<br>" #debug info string = "<div><img src='/img?img_id=" + str(result[0].key()) + "' width='100' height='100'></img>" print string else: print"nothing found<br>" else: self.redirect('/?=error') self.redirect('/') class Image_load(webapp2.RequestHandler): def get(self): self.response.out.write("started Image load") defaultmap = db.get(self.request.get("img_id")) if defaultmap.defaultmap: try: self.response.headers['Content-Type'] = "image/png" self.response.out.write(defaultmap.defaultmap) self.response.out.write("Image found") except: print "Unexpected error:", sys.exc_info()[0] else: self.response.out.write("No image") #SNIP app = webapp2.WSGIApplication([('/', MainPage), ('/generator', Generator), ('/img', Image_load)], debug=True) the browser shows the "item found" and "defaultmap found" strings and a broken imagelink the exception handling does not catch any errors Thanks for your help Regards Bert

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  • XML Schema that describes a self-describing XML document

    - by Raegx
    Is it possible to write an XML Schema that describes an XML document that lists a set of elements and then requires other elements on that same XML document to use those values as either attributes and/or sub-elements? Example: define a list of locations, then force location attributes and/or location elements to be of those values. <root> <locations> <location>Home</location> <location>Office</location> <location>School</location> </locations> <addresses> <address location="Home">...</address> <address location="Office">...</address> </addresses> </root> or <root> <locations> <location>Home</location> <location>Office</location> <location>School</location> </locations> <addresses> <address> <location>Home</location> ... </address> <address> <location>Office</location> ... </address> </addresses> </root> I am failing hard at finding the proper way to search for this information. I suspect it is either not possible or I just don't know the right search terms.

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  • Flex (Lex, not actionscript or w/e) Error

    - by incrediman
    I'm totally new to flex. I'm getting a build error when using flex. That is, I've generated a .c file using flex, and, when running it, am getting this error: 1>lextest.obj : error LNK2001: unresolved external symbol "int __cdecl isatty(int)" (?isatty@@YAHH@Z) 1>C:\...\lextest.exe : fatal error LNK1120: 1 unresolved externals here is the lex file I'm using (grabbed from here): /*** Definition section ***/ %{ /* C code to be copied verbatim */ #include <stdio.h> %} /* This tells flex to read only one input file */ %option noyywrap %% /*** Rules section ***/ /* [0-9]+ matches a string of one or more digits */ [0-9]+ { /* yytext is a string containing the matched text. */ printf("Saw an integer: %s\n", yytext); } . { /* Ignore all other characters. */ } %% /*** C Code section ***/ int main(void) { /* Call the lexer, then quit. */ yylex(); return 0; } As well, why do I have to put a 'main' function in the lex syntax code? What I'd like is to be able to call yylex(); from another c file.

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  • Quick question on using the constructer with multiple files.

    - by sil3nt
    Hi there, I have this class header //header for class. #ifndef Container_H #define Container_H #include <iostream> using namespace std; const int DEFAULT=32; class Container{ public: Container(int maxCapacity = DEFAULT); ~Container(); void insert(int item, int index); void erase(int index); int size()const; private: int sizeC; int capacityC; int * elements; }; void info(); #endif and this source file #include "container.h" Container::Container(int maxCapacity = DEFAULT){ int y; } void Container::insert(int item, int index){ int x; } and when i compile this i get the following error message test.cpp:4: error: default argument given for parameter 1 of `Container::Container(int)' container.h:12: error: after previous specification in `Container::Container(int) what have i done wrong here?

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  • ASP.NET MVC Strongly Typed Widgets

    - by Ben
    I have developed a plugin system that makes it easy to plug in new logic to an application. Now I need to provide the ability to easily add UI widgets. There are already some good responses on how to create a portal system (like iGoogle) with ASP.NET MVC, and I'm fine about the overall concept. My question is really about how we make strongly typed widgets. Essentially when we set up a widget we define the controller and action names that are used to render that widget. We can use one controller action for widgets that are not strongly typed (since we just return PartialView(widgetControlName) without a model) For widgets that are strongly typed (for example to an IList) we would need to add a new controller action (since I believe it is not possible to use Generics with ActionResult e.g. ActionResult). The important thing is that the widget developers should not change the main application controllers. So my two thoughts are this: Create new controllers in a separate class library Create one partial WidgetController in the main web project and then extend this in other projects (is this even possible?) - not possible as per @mfeingold As far as the development of the widgets (user controls) go, we can just use post build events from our extension projects to copy these into the Views/Widgets directory. Is this a good approach. I am interested to here how others have handled this scenario. Thanks Ben P.S - in case it helps, an example of how we can render widgets - without using Javascript <%foreach (var widget in Model) {%> <%if (widget.IsStronglyTyped) { Html.RenderAction(widget.Action, widget.Controller); } else { Html.RenderPartial(widget.ControlName); } %> <%} %>

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  • How I can fix this code to allow my AVR to talk over serial port?

    - by samoz
    Hi guys, I've been pulling my hair out lately trying to get an ATmega162 on my STK200 to talk to my computer over RS232. I checked and made sure that the STK200 contains a MAX202CPE chip. I've configured the chip to use its internal 8MHz clock and divided it by 8. I've tried to copy the code out of the data sheet (and made changes where the compiler complained), but to no avail. My code is below, could someone please help me fix the problems that I'm having? I've confirmed that my serial port works on other devices and is not faulty. Thanks! #include <avr/io.h> #include <avr/iom162.h> #define BAUDRATE 4800 void USART_Init(unsigned int baud) { UBRR0H = (unsigned char)(baud >> 8); UBRR0L = (unsigned char)baud; UCSR0B = (1 << RXEN0) | (1 << TXEN0); UCSR0C = (1 << URSEL0) | (1 << USBS0) | (3 << UCSZ00); } void USART_Transmit(unsigned char data) { while(!(UCSR0A & (1 << UDRE0))); UDR0 = data; } unsigned char USART_Receive() { while(!(UCSR0A & (1 << RXC0))); return UDR0; } int main() { USART_Init(BAUDRATE); unsigned char data; // all are 1, all as output DDRB = 0xFF; while(1) { data = USART_Receive(); PORTB = data; USART_Transmit(data); } }

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  • Getting an Android App to Show Up in the market for "Sony Internet TV"(Google TV)

    - by user1291659
    I'm having a bit of trouble getting my app to show up in the market under GoogleTV. I've searched google's official documentation and I don't believe the manifest lists any elements which would invalidate the program; the only hardware requirement specified is landscape mode, wakelock and external storage(neither which should cause it to be filtered for GTV according to the documentation) and I set the uses touchscreen elements "required" attribute to false. below is the AndroidManifest.xml for my project: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.whateversoft" android:versionCode="2" android:versionName="0.1" > <uses-sdk android:minSdkVersion="8" /> <application android:icon="@drawable/ic_launcher" android:label="Color Shafted" android:theme="@style/Theme.NoBackground" android:debuggable="false"> <activity android:label="Color Shafted" android:name=".colorshafted.ColorShafted" android:configChanges = "keyboard|keyboardHidden|orientation" android:screenOrientation = "landscape"> <!-- Set as the default run activity --> <intent-filter > <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:label="Color Shafted Settings" android:name=".colorshafted.Settings" android:theme="@android:style/Theme" android:configChanges = "keyboard|keyboardHidden"> <!-- --> </activity> </application> <!-- DEFINE PERMISSIONS FOR CAPABILITIES --> <uses-permission android:name = "android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name = "android.permission.WAKE_LOCK"/> <uses-feature android:name="android.hardware.touchscreen" android:required="false" /> <!-- END OF PERMISSIONS FOR CAPABILITIES --> </manifest> I'm about to start promoting the app after the next major release so its been kind of a bummer since I can't seem to get this to work. Any help would be appreciated, thanks in advance : )

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  • Defining Light Coordinates

    - by Zachary
    I took a Computer Graphics exam a couple of days ago which had extra credit question like the following: A light can be defined in one of two ways. It can be defined in world coordinates, e.g. a street light, or in the viewer (eye coordinates), e.g., a head-lamp worn by a miner. In either case the viewpoint can freely change. Describe how the light should be transformed different in these two cases. Since I won't get to see the results of this until after spring break, I thought I would ask here. It seems like the analogies being used are misleading - could you not define a light source that is located at the viewers eye in world coordinates just as well as you could in eye coordinates? I've been doing some research on how OpenGL handles light, and it seems as though it always uses eye coordinates - the ModelView matrix would be applied to any light in world coordinates. In that case the answer may just be that you would have to transform light defined in world coordinates into eye coordinates using something like the ModelView matrix, while light defined in eye coordinates would only need to be transformed by the projection matrix. Then again I could be totally under thinking (or over thinking this). Another thought I had is that it determines which way you render shadows, but that has more to do with the location of the light and its type (point, directional, emission, etc) than what coordinates it is represented in. Any ideas?

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  • Do overlays work correctly in Emacs for Windows?

    - by Cheeso
    I'm using Flymake on C# code, emacs v22.2.1 on Windows. The Flymake stuff has been working well for me. For those who don't know, you can read an overview of flymake, but the quick story is that flymake repeatedly builds the source file you are currently working on in the background, for the purpose of doing syntax checking. It then highlights the compiler warnings and erros in the current buffer. Flymake didn't work for C# initially, but I "monkey-patched it" and it works nicely now. If you edit C# in emacs, I highly recommend using flymake. The only problem I have is with the UI. Flymake highlights the errors and warnings nicely, and then inserts "overlays" with the full error or warning text. IF I hover the mouse pointer over the highlighted line in code, the overlay pops up. But as you can see, the overlay is truncated, and it doesn't display correctly. Flymake seems to be doing the right thing, it's the overlay part that seems broken. Do overlays work correctly in emacs for Windows? Where do I look to fix this?

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  • Perl, share package variable without Export

    - by Mike
    I'm creating a group of Perl scripts, and I would like to have one package store a group of constants. I don't want to export them using Exporter because there will be quite a few and I don't want to pollute the namespace. Since there will be so many, I don't want to require the user to be forced to manually specify which they will be using. I think the best way to just use the packagename::var syntax, however it doesn't seem to be working as I expect it to. I illustrate this problem in the below code This is settings.pm, the module that will hold the global settings #!/usr/bin/perl #settings.pm use strict; use warnings; package settings; our $foo="hello world"; 1; Below is the main script #!/usr/bin/perl #script.pl use strict; use warnings; use settings; print settings::$foo; It gives this error message instead or printing hello world Bad name after settings:: at ./script.pl line 8.

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  • C# 4.0: casting dynamic to static

    - by Kevin Won
    This is an offshoot question that's related to another I asked here. I'm splitting it off because it's really a sub-question: I'm having difficulties casting an object of type dynamic to another (known) static type. I have an ironPython script that is doing this: import clr clr.AddReference("System") from System import * def GetBclUri(): return Uri("http://google.com") note that it's simply newing up a BCL System.Uri type and returning it. So I know the static type of the returned object. now over in C# land, I'm newing up the script hosting stuff and calling this getter to return the Uri object: dynamic uri = scriptEngine.GetBclUri(); System.Uri u = uri as System.Uri; // casts the dynamic to static fine Works no problem. I now can use the strongly typed Uri object as if it was originally instantiated statically. however.... Now I want to define my own C# class that will be newed up in dynamic-land just like I did with the Uri. My simple C# class: namespace Entity { public class TestPy // stupid simple test class of my own { public string DoSomething(string something) { return something; } } } Now in Python, new up an object of this type and return it: sys.path.append(r'C:..path here...') clr.AddReferenceToFile("entity.dll") import Entity.TestPy def GetTest(): return Entity.TestPy(); // the C# class then in C# call the getter: dynamic test = scriptEngine.GetTest(); Entity.TestPy t = test as Entity.TestPy; // t==null!!! here, the cast does not work. Note that the 'test' object (dynamic) is valid--I can call the DoSomething()--it just won't cast to the known static type string s = test.DoSomething("asdf"); // dynamic object works fine so I'm perplexed. the BCL type System.Uri will cast from a dynamic type to the correct static one, but my own type won't. There's obviously something I'm not getting about this...

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  • Practical Scheme Programming

    - by Ixmatus
    It's been a few months since I've touched Scheme and decided to implement a command line income partitioner using Scheme. My initial implementation used plain recursion over the continuation, but I figured a continuation would be more appropriate to this type of program. I would appreciate it if anyone (more skilled with Scheme than I) could take a look at this and suggest improvements. I'm that the multiple (display... lines is an ideal opportunity to use a macro as well (I just haven't gotten to macros yet). (define (ab-income) (call/cc (lambda (cc) (let ((out (display "Income: ")) (income (string->number (read-line)))) (cond ((<= income 600) (display (format "Please enter an amount greater than $600.00~n~n")) (cc (ab-income))) (else (let ((bills (* (/ 30 100) income)) (taxes (* (/ 20 100) income)) (savings (* (/ 10 100) income)) (checking (* (/ 40 100) income))) (display (format "~nDeduct for bills:---------------------- $~a~n" (real->decimal-string bills 2))) (display (format "Deduct for taxes:---------------------- $~a~n" (real->decimal-string taxes 2))) (display (format "Deduct for savings:-------------------- $~a~n" (real->decimal-string savings 2))) (display (format "Remainder for checking:---------------- $~a~n" (real->decimal-string checking 2)))))))))) Invoking (ab-income) asks for input and if anything below 600 is provided it (from my understanding) returns (ab-income) at the current-continuation. My first implementation (as I said earlier) used plain-jane recursion. It wasn't bad at all either but I figured every return call to (ab-income) if the value was below 600 kept expanding the function. (please correct me if that apprehension is incorrect!)

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  • NAMESPACE_SEPARATOR constant

    - by ts
    Hello, Having namespaces in PHP is great. Having '\' as namespace separator is a little bit ... awkward (but if there is someone who thinks that is cool & sexy, I am adding tag "rant" to this post. ;) . So, here goes the question: Are you using in your code NAMESPACE_SEPARATOR constant? As in code below: <?php if (!\defined('NAMESPACE_SEPARATOR') { \define('NAMESPACE_SEPARATOR', '\\'); } // if Pros: consistent with DIRECTORY_SEPARATOR (which all of us are using ;) no mess with escaping (think of '\Foo\Bar' but '\\' . Foo' . '\\' . 'Bar') more readable (IMHO) which gives us in effect an opportunity to write good, namespace-aware autoloaders can resist another change if something scary happens (as with ol'good '::' from PHP 6 alpha) can hide uniquess of '\' as namespace operator in programming language land from strangers ;) Cons: "The reason for DIRECTORY_SEPARATOR is that the value is platform dependent, the namespace separator isn't." (as stated in http://bugs.php.net/bug.php?id=43046) 19 characters instead of 1 ( \ ) or 4 ('\\') There are places where you can't use this (full qualified class names as default class variables) ie: class A { protected $sDefaultReporterClass = '\My\Namespace\DefaultReporter'; } So, what are you thinking ?

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  • Java File IO Compendium

    - by Warren Taylor
    I've worked in and around Java for nigh on a decade, but have managed to ever avoid doing serious work with files. Mostly I've written database driven applications, but occasionally, even those require some file io. Since I do it so rarely, I end up googling around for quite some time to figure out the exact incantation that Java requires to read a file into a byte[], char[], String or whatever I need at the time. For a 'once and for all' list, I'd like to see all of the usual ways to get data from a file into Java, or vice versa. There will be a fair bit of overlap, but the point is to define all of the subtle different variants that are out there. For example: Read/Write a text file from/to a single String. Read a text file line by line. Read/Write a binary file from/to a single byte[]. Read a binary file into a byte[] of size x, one chunk at a time. The goal is to show concise ways to do each of these. Samples do not need to handle missing files or other errors, as that is generally domain specific. Feel free to suggest more IO tasks that are somewhat common and I have neglected to mention.

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  • Problems referencing build output from TFS Build and Visual Studio

    - by pmdarrow
    Here's what I'm trying to do: I have two solutions - one for my main application and its associated projects and another for my database (VS .dbproj) and its associated projects. What I'd like to do is include the output from the database project (a .dbschema and some SQL scripts) in my WiX installer (which exists in the main application solution.) This involves having TFS build the DB solution immediately before the main application solution. I've got that part working properly, but I'm having trouble referencing the output of the DB solution from my installer. I'm using relative paths to reference the DB project output in my WiX installer (e.g. <?define DBProjectOutputDir = "..\..\MyDatabaseSolution\MyDatabaseProject\sql\"?>) which works fine locally, but fails when building via TFS build. This is because TFS Build apparently changes the output dir of each project to one common location. Instead of the path to my database project being ..\..\MyDatabaseSolution\MyDatabaseProject\sql\ like it is when building locally, it gets set to something like ..\..\..\Binaries\Release\. How can I get around this and have a consistent output location to reference from my installer project? I'm using TFS 2005 and VS 2008.

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  • How to accurately parse smtp message status code (DSN)?

    - by Geo
    RFC1893 claims that status codes will come in the format below you can read more here. But our bounce management system is having a hard time parsing error status code from bounce messages. We are able to get the raw message, but depending on the email server the code will come in different places. Is there any rule on how to parse this type of messages to obtain better results. We are not looking for the 100% solution but at least 80%. This document defines a new set of status codes to report mail system conditions. These status codes are intended to be used for media and language independent status reporting. They are not intended for system specific diagnostics. The syntax of the new status codes is defined as: status-code = class "." subject "." detail class = "2"/"4"/"5" subject = 1*3digit detail = 1*3digit White-space characters and comments are NOT allowed within a status- code. Each numeric sub-code within the status-code MUST be expressed without leading zero digits. The quote above from the RFC tells one thing but then the text below from a leading tool on bounce management says something different, where I can get a good source of standard status codes: Return Code Description 0 UNDETERMINED - (ie. Recipient Reply) 10 HARD BOUNCE - (ie. User Unknown) 20 SOFT BOUNCE - General 21 SOFT BOUNCE - Dns Failure 22 SOFT BOUNCE - Mailbox Full 23 SOFT BOUNCE - Message Too Large 30 BOUNCE - NO EMAIL ADDRESS. VERY RARE! 40 GENERAL BOUNCE 50 MAIL BLOCK - General 51 MAIL BLOCK - Known Spammer 52 MAIL BLOCK - Spam Detected 53 MAIL BLOCK - Attachment Detected 54 MAIL BLOCK - Relay Denied 60 AUTO REPLY - (ie. Out Of Office) 70 TRANSIENT BOUNCE 80 SUBSCRIBE Request 90 UNSUBSCRIBE/REMOVE Request 100 CHALLENGE-RESPONSE

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  • Cache Class compilation error using parent-child relationships and cache sql storage

    - by Fred Altman
    I have the global listed below that I'm trying to create a couple of cache classes using sql stoarage for: ^WHEAIPP(1,26,1)=2 ^WHEAIPP(1,26,1,1)="58074^^SMSNARE^58311" 2)="58074^59128^MPHILLIPS^59135" ^WHEAIPP(1,29,1)=2 ^WHEAIPP(1,29,1,1)="58074^^SMSNARE^58311" 2)="58074^59128^MPHILLIPS^59135" ^WHEAIPP(1,93,1)=2 ^WHEAIPP(1,93,1,1)="58884^^SSNARE^58948" 2)="58884^59128^MPHILLIPS^59135" ^WHEAIPP(1,166,1)=2 ^WHEAIPP(1,166,1,1)="58407^^SMSNARE^58420" 2)="58407^59128^MPHILLIPS^59135" ^WHEAIPP(1,324,1)=2 ^WHEAIPP(1,324,1,1)="58884^^SSNARE^58948" 2)="58884^59128^MPHILLIPS^59135" ^WHEAIPP(1,419,1)=3 ^WHEAIPP(1,419,1,1)="59707^^SSNARE^59708" 2)="59707^^MPHILLIPS^59910,58000^^^^" 3)="59707^59981^SSNARE^60117,53241^^^^" The first two subscripts of the global (Hmo and Keen) make a unique entry. The third subscript (Seq) has a property (IppLineCount) which is the number of IppLines in the fourth subscript level (Seq2). I create the class WIppProv below which is the parent class: /// <PRE> /// ============================ /// Generated Class Definition /// Table: WMCA_B_IPP_PROV /// Generated by: FXALTMAN /// Generated on: 05/21/2012 13:46:41 /// Generator: XWESTblClsGenV2 /// ---------------------------- /// </PRE> Class XFXA.MCA.WIppProv Extends (%Persistent, %XML.Adaptor) [ ClassType = persistent, Inheritance = right, ProcedureBlock, StorageStrategy = SQLMapping ] { /// .HMO Property Hmo As %Integer; /// .KEEN Property Keen As %Integer; /// .SEQ Property Seq As %String; Property IppLineCount As %Integer; Index iMaster On (Hmo, Keen, Seq) [ IdKey, Unique ]; Relationship IppLines As XFXA.MCA.WIppProvLine [ Cardinality = many, Inverse = relWIppProv ]; <Storage name="SQLMapping"> <DataLocation>^WHEAIPP</DataLocation> <ExtentSize>1000000</ExtentSize> <SQLMap name="DBMS"> <Data name="IppLineCount"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>1</Piece> </Data> <Global>^WHEAIPP</Global> <PopulationType>full</PopulationType> <Subscript name="1"> <AccessType>Sub</AccessType> <Expression>{Hmo}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="2"> <AccessType>Sub</AccessType> <Expression>{Keen}</Expression> </Subscript> <Subscript name="3"> <AccessType>Sub</AccessType> <LoopInitValue>1</LoopInitValue> <Expression>{Seq}</Expression> </Subscript> <Type>data</Type> </SQLMap> <StreamLocation>^XFXA.MCA.WIppProvS</StreamLocation> <Type>%Library.CacheSQLStorage</Type> </Storage> } This class compiles fine. Next I created the WIppProvLine class listed below and made a parent-child relationship between the two: /// Used to represent a single line of IPP data Class XFXA.MCA.WIppProvLine Extends (%Persistent, %XML.Adaptor) [ ClassType = persistent, Inheritance = right, ProcedureBlock, StorageStrategy = SQLMapping ] { /// .CLM_AMT_ALLOWED node: 0 piece: 6<BR> /// This field should be used in conjunction with the Claim Operator field to /// define a whole claim dollar amount at which a particular claim should be /// flagged with a Pend status. Property ClmAmtAllowed As %String; /// .CLM_LINE_AMT_ALLOWED node: 0 piece: 8<BR> /// This field should be used in conjunction with the Clm Line Operator field to /// define a claim line dollar amount at which a particular claim should be flagged /// with a Pend status. Property ClmLineAmtAllowed As %String; /// .CLM_LINE_OP node: 0 piece: 7<BR> /// A new Table/Column Reference that gives the SIU (Special Investigative Unit) /// the ability to look for claim line dollars above, below, or equal to a set /// amount. Property ClmLineOp As %String; /// .CLM_OP node: 0 piece: 5<BR> /// A new Table/Column Reference that gives the SIU (Special Investigative Unit) /// the ability to look for claim dollars above, below, or equal to a set amount. Property ClmOp As %String; Property EffDt As %Date; Property Hmo As %Integer; /// .IPP_REASON node: 0 piece: 10<BR> /// IPP Reason Code Property IppCode As %Integer; Property Keen As %Integer; /// .LAST_CHG_DT node: 0 piece: 4<BR> /// Last Changed Date Property LastChgDt As %Date; /// .PX_DX_CDE_FLAG node: 0 piece: 9<BR> /// A Flag to indicate whether or not Procedure Codes or Diagnosis Codes are to be /// associated with this SIU Flag Type Entry. If the Flag = Y, then control would /// jump to a new screen where the user can enter the necessary codes. Property PxDxCdeFlag As %String; Property Seq As %String; Property Seq2 As %String; Index iMaster On (Hmo, Keen, Seq, Seq2) [ IdKey, PrimaryKey, Unique ]; /// .TERM_DT node: 0 piece: 2<BR> /// Term Date Property TermDt As %Date; /// .USER_INI node: 0 piece: 3 Property UserIni As %String; Relationship relWIppProv As XFXA.MCA.WIppProv [ Cardinality = one, Inverse = IppLines ]; Index relWIppProvIndex On relWIppProv; //Index NewIndex1 On (RelWIppProv, Seq2) [ IdKey, PrimaryKey, Unique ]; <Storage name="SQLMapping"> <ExtentSize>1000000</ExtentSize> <SQLMap name="DBMS"> <ConditionalWithHostVars></ConditionalWithHostVars> <Data name="ClmAmtAllowed"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>6</Piece> </Data> <Data name="ClmLineAmtAllowed"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>8</Piece> </Data> <Data name="ClmLineOp"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>7</Piece> </Data> <Data name="ClmOp"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>5</Piece> </Data> <Data name="EffDt"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>1</Piece> </Data> <Data name="Hmo"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>11</Piece> </Data> <Data name="IppCode"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>10</Piece> </Data> <Data name="LastChgDt"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>4</Piece> </Data> <Data name="PxDxCdeFlag"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>9</Piece> </Data> <Data name="TermDt"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>2</Piece> </Data> <Data name="UserIni"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>3</Piece> </Data> <Global>^WHEAIPP</Global> <Subscript name="1"> <AccessType>Sub</AccessType> <Expression>{Hmo}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="2"> <AccessType>Sub</AccessType> <Expression>{Keen}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="3"> <AccessType>Sub</AccessType> <Expression>{Seq}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="4"> <AccessType>Sub</AccessType> <Expression>{Seq2}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Type>data</Type> </SQLMap> <StreamLocation>^XFXA.MCA.WIppProvLineS</StreamLocation> <Type>%Library.CacheSQLStorage</Type> </Storage> } When I try to compile this one I get the following error: ERROR #5502: Error compiling SQL Table 'XFXA_MCA.WIppProvLine %msg: Table XFXA_MCA.WIppProvLine has the following unmapped (not defined on the data map) fields: relWIppProv' ERROR #5030: An error occurred while compiling class XFXA.MCA.WIppProvLine Detected 1 errors during compilation in 2.745s. What am I doing wrong? Thanks in Advance, Fred

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  • PageMethod with Custom Handler

    - by Mister Cook
    I have a page based web method which works fine, using [WebMethod], i.e [WebMethod] public static void DoSomethingOnTheServer() { } I also have a custom page handler to make SEO friendly URLs possible, e.g http://localhost/MySite/A_nice_url.ext = http://localhost/MySite/page.aspx?id=1 I am using Server.Transfer in my ProcessRequest handler to achieve this. This all works fine. Also, my page method works fine when the user requests the URL such as: http://localhost/MySite/page.aspx?id=1 However, when the user requests the custom handled URL, i.e. http://localhost/MySite/A_nice_url.ext The client reports that the PageMethod has been successfully completed, but it has not been called at all. I'm guessing it has something to do with my custom handler, so I have modified it to include PathInfo: public void ProcessRequest(HttpContext context) { // ... (code to determine id) ... // Transfer to the required page string actualPath = "~/page.aspx" + context.Request.PathInfo + "?id=" + determinedId; context.Server.Transfer(actualPath); } So now if a PageMethod is called, it will result in: http://localhost/MySite/page.aspx/DoSomethingOnTheServer?id=1 I'm wondering if this is the correct syntax for calling a PageMethod. When I try Server.Transfer reports: Error executing child request for /MySite/page.aspx/DoSomethingOnTheServer I've experimented with HttpContext.RewritePath but not sure how to actually make it perform the request. This does not seem to work, any ideas?

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  • Dimension Mismatch MatLab; cant figure out why it is mismatching

    - by Abid
    I think it may be a syntax issue, here is the code. load ([ 'C:\Users\Abid\Desktop\Inquiry Runs\dtS' ]) dtS((dtS==0))=nan; for j=2:9; maxS=max(dtS(j,:)); minS=min(dtS(j,:)); maxval(j,:)=dtS((dtS>(maxS-.1*maxS))); minval(j,:)=dtS((dtS<(minS+.1*minS))); avmax(j)=mean(maxval(j,:)); avmin(j)=mean(minval(j,:)); avs(j,:)=[avmax(j) avmin(j)] end So I know the the row matrices are different sizes every loop. For example maxval(j,:) will change depending one row it is looking through for certain values. I did this manually and I see that on the first loop the matrices are size (1,1), however, if I set the loop to run for only j=2, the row length is 13. Usually if a matrix is changing size on the loop, I only get a warning, but this time I think it is due to a reason I don't understand.

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