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Articles indexed Thursday May 20 2010

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  • InetAddress.getLocalHost() throws UnknownHostException

    - by jhwist
    Hi, I am testing our server-application (written Java) on different operating systems and thought that OpenSolaris (2008.11) would be the least troublesome due to the nice Java integration. Turns out I was wrong, as I end up with a UnknownHostException try { computerName = InetAddress.getLocalHost().getHostName(); if (computerName.indexOf(".") > -1) computerName = computerName.substring(0, computerName.indexOf(".")).toUpperCase(); } catch (UnknownHostException e) { e.printStackTrace(); } The output is: java.net.UnknownHostException: desvearth01: desvearth01 at java.net.InetAddress.getLocalHost(InetAddress.java:1353) However, nslookup desvearth01 returns the correct IP address, and nslookup localhost returns 127.0.0.1 as expected. Also, the same code works perfectly on FreeBSD. Is there anything special to OpenSolaris that I am not aware of? Any hints appreciated, thanks.

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  • T-SQL Better way to determine max of date (accounting for nulls)

    - by Josh
    I am comparing two dates and trying to determine the max of the two dates. A null date would be considered less than a valid date. I am using the following case statement, which works - but feels very inefficient and clunky. Is there a better way? update @TEMP_EARNED set nextearn = case when lastoccurrence is null and lastearned is null then null when lastoccurrence is null then lastearned when lastearned is null then lastoccurrence when lastoccurrence > lastearned then lastoccurrence else lastearned end; (This is in MS SQL 2000, FYI.)

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  • 42S22 SQL error: Column not found, why?

    - by Vincenzo
    This is my SQL: SELECT `tbl`.*, 123 AS `test` FROM `tbl` GROUP BY `test` It works when I run it directly in MySQL. But PDO says: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'test' in 'field list' Why so? How to cure this problem? I'm using Zend_Db.

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  • SharePoint's CAML query the "Created By" field with username

    - by yellowblood
    Hey, I have a form for administrators where they insert a user name ("domain\name") and the code gets and sets some information out of it. It's a huge project and some of the lists contain the username as a string ("domain\name"), but some lists only count on the "Created By" column, which is auto-created. I want to know what's the fastest way to query these lists using the username string. I tried to use the same query as the one I use for the first kind of lists and it obviously didn't work - <Where><Eq><FieldRef Name='UserName'/><Value Type='Text'>domain\\username</Value></Eq></Where> Thank you.

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  • Google Storage for Developers…

    - by joelvarty
    I noticed this today and it seems to be a service that will compete with Amazon S3 and Microsoft’s Azure Blob storage. It’s only open to US developers for now, but I have one burning question: can we transfer directly from Google Storage to another Google service (like YouTube, Docs, etc) without incurring any transfer charges?  The even bigger question is whether all of the APIs will be updated to include this new service and to better amalgamate the existing app services with this one, since storage is so central to everything, it seems to beg the question. via Daring Fireball more later - joel

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  • SharePoint 2010 and Excel Calculation Services

    - by Cj Anderson
    I'm curious what the requirements are for Excel Calculation Services in Sharepoint 2010. I found an architecture document but it doesn't list out the specific requirements. (architecture I understand that you can install all the services on one server but it isn't recommended. It then talks about how you can scale up the application servers, and web front ends. What should the hardware look like for both the application server and web front ends? Do I need to setup a standalone box for each application server?

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  • How to get Windows XP to play a sound on mouse clicks

    - by Re0sless
    Is it possible to play a sound each time the mouse button is pressed in Windows? We have some touch screens PC's that run Windows XP, and would like them to beep when pressed so the users know they have registered the click. (the touch screen acts a the left mouse button) I have looked in Sounds and Accessibility options but can not see anything that would work. If there is nothing in windows that would do this is there any third party applications to do the same job. We don't need anything lavish just a simple click or beep would suffice.

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  • Deleting elements from stl set while iterating through it does not invalidate the iterators.

    - by pedromanoel
    I need to go through a set and remove elements that meet a predefined criteria. This is the test code I wrote: #include <set> #include <algorithm> void printElement(int value) { std::cout << value << " "; } int main() { int initNum[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; std::set<int> numbers(initNum, initNum + 10); // print '0 1 2 3 4 5 6 7 8 9' std::for_each(numbers.begin(), numbers.end(), printElement); std::set<int>::iterator it = numbers.begin(); // iterate through the set and erase all even numbers for (; it != numbers.end(); ++it) { int n = *it; if (n % 2 == 0) { // wouldn't invalidate the iterator? numbers.erase(it); } } // print '1 3 5 7 9' std::for_each(numbers.begin(), numbers.end(), printElement); return 0; } At first, I thought that erasing an element from the set while iterating through it would invalidate the iterator, and the increment at the for loop would have undefined behavior. Even though, I executed this test code and all went well, and I can't explain why. My question: Is this the defined behavior for std sets or is this implementation specific? I am using gcc 4.3.3 on ubuntu 10.04 (32-bit version), by the way. Thanks!

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  • Future of the "SAP Java Connector"

    - by Elmex
    Is the SAP Java Connector still a good way to connect a Java Application with SAP ? Will there be a support and maintenance of the connector in the future (especially in ECC 6.0) or is the one and only good way the usage of the "Enterprise Services" in ECC 6.0 ?

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  • SQL Server 2005 RIGHT OUTER JOIN not working

    - by CheeseConQueso
    I'm looking up access logs for specific courses. I need to show all the courses even if they don't exist in the logs table. Hence the outer join.... but after trying (presumably) all of the variations of LEFT OUTER, RIGHT OUTER, INNER and placement of the tables within the SQL code, I couldn't get my result. Here's what I am running: SELECT (a.first_name+' '+a.last_name) instructor, c.course_id, COUNT(l.access_date) course_logins, a.logins system_logins, MAX(l.access_date) last_course_login, a.last_login last_system_login FROM lsn_logs l RIGHT OUTER JOIN courses c ON l.course_id = c.course_id, accounts a WHERE l.object_id = 'LOGIN' AND c.course_type = 'COURSE' AND c.course_id NOT LIKE '%TEST%' AND a.account_rights > 2 AND l.user_id = a.username AND ((a.first_name+' '+a.last_name) = c.instructor) GROUP BY c.course_id, a.first_name, a.last_name, a.last_login, a.logins, c.instructor ORDER BY a.last_name, a.first_name, c.course_id, course_logins DESC Is it something in the WHERE clause that's preventing me from getting course_id's that don't exist in lsn_logs? Is it the way I'm joining the tables? Again, in short, I want all course_id's regardless of their existence in lsn_logs.

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  • Checking COM Port Availability in C#

    - by Jim Fell
    Hello. My C# application populates a comboBox with the COM ports found on the system. I would like the mark the COM ports that are in use as such. I know that I can use try / catch blocks to attempt to open every COM port, but I was wondering if there is a more graceful way to do this. Perhaps using a WMI query? I am using Microsoft Visual C# 2008 Express Edition (.NET 2.0). Any thoughts or suggestions you may have would be appreciated. Thanks.

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  • Initialize preferences from XML in main Activity

    - by pixel
    My problem is that when I start application and user didn't open my PreferenceActivity so when I retrieve them don't get any default values defined in my preference.xml file. preference.xml file: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" android:key="applicationPreference" android:title="@string/config" > <ListPreference android:key="pref1" android:defaultValue="default" android:title="Title" android:summary="Summary" android:entries="@array/entry_names" android:entryValues="@array/entry_values" android:dialogTitle="@string/dialog_title" /> </PreferenceScreen> Snippet from my main Activity (onCreate method): SharedPreferences appPreferences = PreferenceManager.getDefaultSharedPreferences(this); String pref1 = appPreferences.getString("pref1", null); In result I end up with a null value.

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  • libiconv - iconv_open() default behavior?

    - by DooriBar
    According to the documentation of iconv_open() over: http://www.gnu.org/software/libiconv/documentation/libiconv/iconv_open.3.html "//TRANSLIT" means that when a character cannot be represented in the target character set, it can be approximated through one or several characters. and: "//IGNORE" means that characters that cannot be represented in the target character set will be silently discarded. But what is the default behavior, when neither are specified? Thanks, Doori Bar

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  • Java How to find a value in a linked list iteratively and recursively

    - by Roxy
    Hi I have a method that has a reference to a linked list and a int value. So, this method would count and return how often the value happens in the linked list. So, I decided to make a class, public class ListNode{ public ListNode (int v, ListNode n) {value = v; next = n;) public int value; public ListNode next; } Then, the method would start with a public static int findValue(ListNode x, int valueToCount){ // so would I do it like this?? I don't know how to find the value, // like do I check it? for (int i =0; i< x.length ;i++){ valueToCount += valueToCount; } So, I CHANGED this part, If I did this recursively, then I would have public static int findValue(ListNode x, int valueToCount) { if (x.next != null && x.value == valueToCount { return 1 + findValue(x, valueToCount);} else return new findvalue(x, valueToCount); SO, is the recursive part correct now?

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  • 401 Unauthorized using oauth with twitter on iPhone

    - by menkel
    I use Twitter-OAuth-iPhone. http://github.com/bengottlieb/Twitter-OAuth-iPhone/ when i try to login on twitte, I received an error 401 i received the delegate call for - (void) OAuthTwitterController: (SA_OAuthTwitterController *) controller authenticatedWithUsername: (NSString *) username { but when i try to send a tweet just after [_engine sendUpdate: [NSString stringWithFormat:@"Hello World"]]; i received an error 401 failed with error: Error Domain=HTTP Code=401 "Operation could not be completed. (HTTP error 401.)" i have check my twitter application setting Type: Client Default Access type: Read & Write

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  • How to program a Sort feature

    - by Brian Roisentul
    I'm working on Ruby on rails 2.3.4 and I'm trying to develop a Sort feature on my website's search page(its url is /anuncios/buscar). What I tried is to create a "map" on routes file: map.search_filter_relevance "/anuncios/buscar", :controller => 'announcements', :action => 'search_filter_relevance' Then, I wrote this on the view: <%= link_to 'M&Aacute;S RELEVANTES', search_filter_relevance(@announcements) %> And finally, I created a method in the controller, as is specified on the routes' line: def search_filer_relevance raise params.inspect end First of all, as I'm sorting search results, I'd like to keep them in their public variable called @announcements. Please help me do this. An the other thing is that when I click the link I get an error due its trying to access the Show action instead of search_filter_relevance as specified in routes. Why is this happening?

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