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Search found 2018 results on 81 pages for 'cr 48'.

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  • Macbook not connecting to WIFI

    - by Model Reject
    I have been having this problem all week. My Macbook aluminium can't see my wifi network. I have changed the channel to one that isn't being used by neighbours and my iphone picks it up straight away. In other words, the router is fine. It's just the macbook can't see it. This is driving me nuts if anyone can help... My airport card details... Card Type: AirPort Extreme (0x14E4, 0x8D) Firmware Version: Broadcom BCM43xx 1.0 (5.10.131.36.1) Locale: ETSI Supported PHY Modes: 802.11 a/b/g/n Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 Wake On Wireless: Supported The funny thing is that is was intermitent on Saturday. I had to keep restarting router and it worked for about 5 minutes, now it doesn't connect or see it at all. Tried using kisMAC and it can't see network either. Thanks, C

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  • FFMPEG settings for Youtube and facebook video uploads

    - by eco_bach
    Can any FFMPEG experts share their preferred settings for video conversion to both Youtube and Facebook? For youtube I am following these guidelines and my video size is 480P @ 24 fps Audio Codec: AAC-LC Channels: Stereo or Stereo + 5.1<br> Sample rate 96khz or 48 khz<br> Video Codec: H.264 Progressive scan (no interlacing)<br> High Profile<br> 2 consecutive B frames<br> Closed GOP. GOP of half the frame rate.<br> CABAC<br> Variable bitrate. No bitrate limit required Color Space: 4.2.0 http://support.google.com/youtube/bin/static.py?hl=en&topic=1728573&guide=1728585&page=guide.cs

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  • Secondary fallback/failover network on Cisco ASA

    - by tyranitar
    In my network there is a Cisco ASA 55x0 with "inside" interface (network 192.168.79.0/24) and "outside" interface (network 89.x.x.48/29) There is this nat rule: object network NAToutside nat (inside,outside) dynamic interface and the static route route outside 0.0.0.0 0.0.0.0 89.x.x.49 1 and all ACL rules. Now I have another new outside network by another ISP called "outside2", this network is already natted and the Cisco ASA in in the network 192.168.70.0/24. I would use this network as a fallback one. So I set the nat rule: object network NAToutside2 nat (inside,outside2) dynamic interface and the static route with a different metric route outside2 0.0.0.0 0.0.0.0 192.168.70.1 2 Clearly it doesn't work: when I disconnect the outside ethernet cable no workstation can connect to the Internet throught the outside2 network... What do I need more?

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  • Too Many ESTABLISHED connection from a single IP address in Apache

    - by ananthan
    netstat -ntp |grep 80 shows too many ESTABLISHED connection from single IP address. Around 300 of them and it is not an attack and user is using a 2G connection to access Apache. This is the case with other 2G connections also. As a result of this Apache is running out of children. Earlier it was showing too many close_wait and after enabling tcp_tw_reuse and tcp_tw-recycle there is not much close_wait but the number of ESTABLISHED connections increased. We are using Ubuntu 11.04 having 48 GB ram keepalive On keepalive timeout 10 max clients 800 max-request-perchild 4000 timeout 300 I have set syn_ack to 1 and syn_retries to 2. On wifi there is no such issue. Connections are closing properly, but with 2G connections Apache is running out of children and too many ESTABLISHED connection. also i have tried setting timeout from default 300 to 30,but since our project is image hosting for mobile phones,clients couldn't upload images properly as they are getting frequent time out.Also there were a lot of 408 messages so changed it to the default 300

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  • Setting a mapped drive in Virtual hosts causes apache to not start

    - by darksoulsong
    I´m trying to set a virtual host on my windows 7 machine. The folder I want to point to is located on a centOS machine and the folder path is Z:\Websites\Online\MyClient\Site. But something strange happens when I set the document root like this: DocumentRoot "Z:\Websites\Online\MyClient\Site" Apache do not restarts after that. When I take a look at the log, there is an error pointing to that line, where I added the path to the folder: Syntax error on line 48 of C:/Program Files/Zend/Apache2/conf/extra/httpd-vhosts.conf: DocumentRoot must be a directory. There must be a way to make it work like this, by setting an Apache Installation on a machine and pointing it to a folder located on another computer, right? My hosts file is set like this: 172.17.10.1\Data\Websites\Online\MyClient\Site MyClient.local ANY HELP would be VERY appreciated.

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  • Boot.ini on Windows Server 2003 R2

    - by Jason H.
    I have a Windows Server 2003 R2 with 48 GB of RAM; server has been running strong for quite some time. Recently our boot.ini was modified causing issues, most likely by our remote administrators. Now the server is only showing 14 GB of RAM. This has caused major performance issues for our end users. Our remote administrators have stated "we don't change the boot.ini settings(switches)". However, I know for a fact that all of the local administrators have not modified the switches (due to lack of permissions). The real question.. Is it possible to "audit" who has modified the boot.ini? If thats not possible, can the boot.ini be set via startup? Any help would be greatly appreciated. This is an ongoing issue that I would love to resolve.

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  • Print Managment

    - by nardone25
    Hello everyone, I am having a ID10T error LOL,. First I am using window server 2003 r2 edition. I installed on a domian controller print managment. So this is where all 48 printers I have are installed. I just got a new printer. I gave it an IP for the machine and when I head into the server room i tried to add it to the server. I can print a test page, when I am logged on to the print server, but on my client computer when he goes to add a printer in window xp pro the printer isn't listed in add print for network. What did I do wrong?

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  • radvd won't accept non-/64 subnets

    - by Dolda2000
    I'm trying to set up radvd on a 6RD configuration (on Linux), where I have a /64 subnet, and I'm trying to use it on two distinct physical networks, so I'm trying to give each of them a /80 subnet. However, when I start radvd on these interfaces, it says this: radvd[3987]: prefix length should be 64 for int (int being the name of one of the interfaces.) I know that stateless autoconfiguration doesn't work on subnets that are larger than /64, like a /48 subnet, but AFAIK it's supposed to work on anything that is smaller than /64, so /80 shouldn't be a problem. The final effect, now, is that radvd simply advertises the wrong subnet prefix, effectively "removing" the first 16 bits of it. What is this? Am I all wrong on that, is radvd buggy, or is there some configuration option that I'm missing?

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  • LinkedIn API returns 'Unauthorized' response (PHP OAuth)

    - by Jim Greenleaf
    I've been struggling with this one for a few days now. I've got a test app set up to connect to LinkedIn via OAuth. I want to be able to update a user's status, but at the moment I'm unable to interact with LinkedIn's API at all. I am able to successfully get a requestToken, then an accessToken, but when I issue a request to the API, I see an 'unauthorized' error that looks something like this: object(OAuthException)#2 (8) { ["message:protected"]=> string(73) "Invalid auth/bad request (got a 401, expected HTTP/1.1 20X or a redirect)" ["string:private"]=> string(0) "" ["code:protected"]=> int(401) ["file:protected"]=> string(47) "/home/pmfeorg/public_html/dev/test/linkedin.php" ["line:protected"]=> int(48) ["trace:private"]=> array(1) { [0]=> array(6) { ["file"]=> string(47) "/home/pmfeorg/public_html/dev/test/linkedin.php" ["line"]=> int(48) ["function"]=> string(5) "fetch" ["class"]=> string(5) "OAuth" ["type"]=> string(2) "->" ["args"]=> array(2) { [0]=> string(35) "http://api.linkedin.com/v1/people/~" [1]=> string(3) "GET" } } } ["lastResponse"]=> string(358) " 401 1276375790558 0000 [unauthorized]. OAU:Bhgk3fB4cs9t4oatSdv538tD2X68-1OTCBg-KKL3pFBnGgOEhJZhFOf1n9KtHMMy|48032b2d-bc8c-4744-bb84-4eab53578c11|*01|*01:1276375790:xmc3lWhXJvLSUZh4dxMtrf55VVQ= " ["debugInfo"]=> array(5) { ["sbs"]=> string(329) "GET&http%3A%2F%2Fapi.linkedin.com%2Fv1%2Fpeople%2F~&oauth_consumer_key%3DBhgk3fB4cs9t4oatSdv538tD2X68-1OTCBg-KKL3pFBnGgOEhJZhFOf1n9KtHMMy%26oauth_nonce%3D7068001084c13f2ee6a2117.22312548%26oauth_signature_method%3DHMAC-SHA1%26oauth_timestamp%3D1276375790%26oauth_token%3D48032b2d-bc8c-4744-bb84-4eab53578c11%26oauth_version%3D1.0" ["headers_sent"]=> string(401) "GET /v1/people/~?GET&oauth_consumer_key=Bhgk3fB4cs9t4oatSdv538tD2X68-1OTCBg-KKL3pFBnGgOEhJZhFOf1n9KtHMMy&oauth_signature_method=HMAC-SHA1&oauth_nonce=7068001084c13f2ee6a2117.22312548&oauth_timestamp=1276375790&oauth_version=1.0&oauth_token=48032b2d-bc8c-4744-bb84-4eab53578c11&oauth_signature=xmc3lWhXJvLSUZh4dxMtrf55VVQ%3D HTTP/1.1 User-Agent: PECL-OAuth/1.0-dev Host: api.linkedin.com Accept: */*" ["headers_recv"]=> string(148) "HTTP/1.1 401 Unauthorized Server: Apache-Coyote/1.1 Date: Sat, 12 Jun 2010 20:49:50 GMT Content-Type: text/xml;charset=UTF-8 Content-Length: 358" ["body_recv"]=> string(358) " 401 1276375790558 0000 [unauthorized]. OAU:Bhgk3fB4cs9t4oatSdv538tD2X68-1OTCBg-KKL3pFBnGgOEhJZhFOf1n9KtHMMy|48032b2d-bc8c-4744-bb84-4eab53578c11|*01|*01:1276375790:xmc3lWhXJvLSUZh4dxMtrf55VVQ= " ["info"]=> string(216) "About to connect() to api.linkedin.com port 80 (#0) Trying 64.74.98.83... connected Connected to api.linkedin.com (64.74.98.83) port 80 (#0) Connection #0 to host api.linkedin.com left intact Closing connection #0 " } } My code looks like this (based on the FireEagle example from php.net): $req_url = 'https://api.linkedin.com/uas/oauth/requestToken'; $authurl = 'https://www.linkedin.com/uas/oauth/authenticate'; $acc_url = 'https://api.linkedin.com/uas/oauth/accessToken'; $api_url = 'http://api.linkedin.com/v1/people/~'; $callback = 'http://www.pmfe.org/dev/test/linkedin.php'; $conskey = 'Bhgk3fB4cs9t4oatSdv538tD2X68-1OTCBg-KKL3pFBnGgOEhJZhFOf1n9KtHMMy'; $conssec = '####################SECRET KEY#####################'; session_start(); try { $oauth = new OAuth($conskey,$conssec,OAUTH_SIG_METHOD_HMACSHA1,OAUTH_AUTH_TYPE_URI); $oauth->enableDebug(); if(!isset($_GET['oauth_token'])) { $request_token_info = $oauth->getRequestToken($req_url); $_SESSION['secret'] = $request_token_info['oauth_token_secret']; header('Location: '.$authurl.'?oauth_token='.$request_token_info['oauth_token']); exit; } else { $oauth->setToken($_GET['oauth_token'],$_SESSION['secret']); $access_token_info = $oauth->getAccessToken($acc_url); $_SESSION['token'] = $access_token_info['oauth_token']; $_SESSION['secret'] = $access_token_info['oauth_token_secret']; } $oauth->setToken($_SESSION['token'],$_SESSION['secret']); $oauth->fetch($api_url, OAUTH_HTTP_METHOD_GET); $response = $oauth->getLastResponse(); } catch(OAuthException $E) { var_dump($E); } I've successfully set up a connection to Twitter and one to Facebook using OAuth, but LinkedIn keeps eluding me. If anyone could offer some advice or point me in the right direction, I will be extremely appreciative!

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  • calculater by using reverse polish notation and using a stack

    - by programmer
    hello everyone I have a segmentation fault ,can you help please? if i have this operater "3 5 +" that mean 3+5 and like "9 8 * 5 + 4 + sin", "sin(((9*8)+5)+4)" so my idea is check if the first and second are numbers and push theem in the stack then when i have operator i pop the numbers and make the calculation then push the answer again. ` typedef struct st_node { float val; struct st_node *next; } t_node; typedef t_node t_stack; // a function to allocate memory for a stack and returns the stack t_stack* fnewCell() { t_stack* ret; ret = (t_stack*) malloc(sizeof(t_stack)); return ret; } // a function to allocate memory for a stack, fills it with value v and pointer n , and returns the stack t_stack* fnewCellFilled(float v, t_stack* n) { t_stack* ret; ret = fnewCell(); ret->val = v; ret->next =n; return ret; } //function to initialize stack void initstack(t_stack** stack) { fnewCellFilled(0,NULL); } // add new cell void insrtHead(t_stack** head,float val) { *head = fnewCellFilled(val,*head); } //function to push the value v into the stack s void push(t_stack **s, float val) { insrtHead(s,val); } //function to pop a value from the stack and returns it int pop(t_stack **s) { t_stack* tmp; int ret; tmp = (*s)->next; ret = (*s)->val; free(*s); (*s) = tmp; return ret; } int isempty (t_stack *t) { return t == NULL; } //function to transfer a string(str) to int (value) //returns -1 when success , i otherwise int str2int(char *str,int *value) { int i; *value = 0; int sign=(str[0]=='-' ? -1 : 1); for(i=(str[0]=='-' ? 1 : 0);str[i]!=0;i++) { if(!(str[i]>=48 && str[i]<=57)) // Ascii char 0 to 9 return i; *value= *value*10+(str[i]-48); } *value = *value * sign; return -1; } //a function that takes a string, transfer it into integer and make operation using a stack void function(t_stack *stack, char *str) { char x[10]=" "; int y,j,i=0,z; printf("++\n"); if(str[i] != '\0') { strcpy(x, strtok(str, " ")); z= str2int(x, &y); if(z == -1) { push(&stack,y); i=i+2; } } while(str[i] != '\0') { strcpy(x, strtok(NULL, " ")); z= str2int(x, &y); if(z == -1) { printf("yes %d",y); push(&stack,y); i=i+2; } else { y=pop(&stack); j=pop(&stack); if(x[0] == '+' ) push(&stack,y+j); else if (x[0] == '-' ) push(&stack,j-y); else if(x[0] == '*' ) push(&stack,j*y); else if(x[0] == '/') push (&stack ,j/y); } } } int main() { t_stack *s; initstack(&s); char *str="3 5 +"; function(s,str); return 0; } `

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  • Android - Custom Adapter Problem

    - by Ryan
    Hello, I seem to be having a problem with my Custom Adapter view. When I display the list, it only displays a white screen. Here is how it works: 1.) I send a JSON request 2.) populate the ArrayList with the returned results 3.) create a custom adapter 4.) then bind the adapter. Here is steps 2-4 private void updateUI() { ListView myList = (ListView) findViewById(android.R.id.list); itemList = new ArrayList(); Iterator it = data.entrySet().iterator(); while (it.hasNext()) { //Get the key name and value for it Map.Entry pair = (Map.Entry)it.next(); String keyName = (String) pair.getKey(); String value = pair.getValue().toString(); if (value != null) { ListItem li = new ListItem(keyName, value, false); itemList.add(li); } } CustomAdapter mAdapter = new CustomAdapter( mContext, itemList); myList.setAdapter(mAdapter); //Bind the adapter to the list //Tell the dialog it's cool now. dismissDialog(0); //Show next screen flipper.setInAnimation(inFromRightAnimation()); flipper.setOutAnimation(outToRightAnimation()); flipper.showNext(); } And here is my CustomAdapter class: import java.util.List; import android.R.color; import android.content.Context; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.TextView; class MyAdapterView extends RelativeLayout { public MyAdapterView(Context c, ListItem li) { super( c ); RelativeLayout rL = new RelativeLayout(c); RelativeLayout.LayoutParams containerParams = new RelativeLayout.LayoutParams( ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT); rL.setLayoutParams(containerParams); rL.setBackgroundColor(color.white); ImageView img = new ImageView (c); img.setImageResource(li.getImage()); img.setPadding(5, 5, 10, 5); rL.addView(img, 48, 48); TextView top = new TextView(c); top.setText(li.getTopText()); top.setTextColor(color.black); top.setTextSize(20); top.setPadding(0, 20, 0, 0); rL.addView(top,ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); TextView bot = new TextView( c ); bot.setText(li.getBottomText()); bot.setTextColor(color.black); bot.setTextSize(12); bot.setPadding(0, 0, 0, 10); bot.setAutoLinkMask(1); rL.addView(bot,ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); } } public class CustomAdapter extends BaseAdapter { private Context context; private List itemList; public CustomAdapter(Context c, List itemL ) { this.context = c; this.itemList = itemL; } public int getCount() { return itemList.size(); } public Object getItem(int position) { return itemList.get(position); } public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ListItem li = itemList.get(position); return new MyAdapterView(this.context, li); } } Does anyone have any idea why this displays a white screen upon completion?? Thanks in advance!

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  • How to pushviewcontroller to a viewcontroller stored in a tabbaritem?

    - by Jann
    First of all I know this is a long question. REST ASSURED I have tried to figure it out on my own (see: StackOverflow #2609318). This is driving me BATTY! After trying and failing to implement my own EDIT feature in the standard moreNavigationController, I have decided to re-implement my own MORE feature. I did the following: Add a HOME view controller which I init with: initWithRootViewController Add 3 other default tabs with: ResortsListViewController *resortsListViewController; resortsListViewController = [[ResortsListViewController alloc] initWithNibName:@"ResortsListView" bundle:nil]; resortsListViewController.title = [categoriesDictionary objectForKey:@"category_name"]; resortsListViewController.tabBarItem.image = [UIImage imageNamed:@"whatever.png"]; resortsListViewController.navigationItem.title=@"whatever title"; localNavigationController = [[UINavigationController alloc] initWithRootViewController:resortsListViewController]; localNavigationController.navigationBar.barStyle = UIBarStyleBlack; [localControllersArray addObject:localNavigationController]; [localNavigationController release]; [resortsListViewController release]; Those work when i add them to the tabbar. (ie: click on them and it goes to the view controller) Then I add my own MORE view controller to the tabbar: MoreViewController *moreViewController; moreViewController = [[MoreViewController alloc] initWithNibName:@"MoreView" bundle:nil]; moreViewController.title = @"More"; moreViewController.tabBarItem.image = [UIImage imageNamed:@"more.png"]; moreViewController.navigationItem.title=@"More Categories"; localNavigationController = [[UINavigationController alloc] initWithRootViewController:moreViewController]; localNavigationController.navigationBar.barStyle = UIBarStyleBlack; [localControllersArray addObject:localNavigationController]; [localNavigationController release]; [moreViewController release]; Then tabBarController.viewControllers = localControllersArray; tabBarController.moreNavigationController.navigationBar.barStyle = UIBarStyleBlack; tabBarController.customizableViewControllers = [NSArray arrayWithObjects:nil]; tabBarController.delegate = self; That creates the necessary linkages. Okay, so far all is well. I get a HOME tab, 3 category tabs and a customized MORE tab -- which all work. in the MORE tab view controller I implement a simple table view that displays all the other tabs I have in rows. SINCE I want to be able to switch them in and out of the tabbar I created them JUST like i did the resortslistviewcontroller above (ie: as view controllers in an array). When I pull them out to display the title in the tableview (so the user can go to that "view") i simply do the following: // [myGizmoClass CategoryArray] holds the array of view controller tab bar items that are NOT shown on the main screen. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { ... etc... UIViewController *Uivc = [[myGizmoClass plusCategoryArray] objectAtIndex:indexPath.row]; cell.textLabel.text = [Uivc title]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; } THIS is where it falls through: - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { MyGizmoClass *myGizmoClass= [MyGizmoClass sharedManager]; UIViewController *tbi = [[myGizmoClass plusCategoryArray] objectAtIndex:indexPath.row]; NSLog(@"%@\n",[[tbi navigationItem ]title]); [self.navigationController pushViewController:tbi animated:YES]; } This is the error i get ("ATMs" is the title for the clicked tableview cell so i know the Uivc title is pulling the correct title and therefore the correct "objectatindex": 2010-04-09 11:25:48.222 MouseAddict[47485:207] ATMs 2010-04-09 11:25:48.222 MouseAddict[47485:207] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Pushing a navigation controller is not supported' BIG QUESTION: How do i make the associated VIEW of the UIViewController *tbi show and get pushed into view? I am GUESSING that the UIViewController is the correct class for this tbl .. i am not sure. BUT i just wanna get the view so i can push it onto the stack. Can someone plz help?

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  • ERROR: Failed to build gem native extension on Mavericks

    - by Kyle Decot
    I'm attempting to run bundle in my Rails project on OSX 10.9. It fails when getting to the pg gem with this error: Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. /Users/kyledecot/.rvm/rubies/ruby-2.0.0-p247/bin/ruby extconf.rb checking for pg_config... no No pg_config... trying anyway. If building fails, please try again with --with-pg-config=/path/to/pg_config checking for libpq-fe.h... yes checking for libpq/libpq-fs.h... yes checking for pg_config_manual.h... yes checking for PQconnectdb() in -lpq... yes checking for PQconnectionUsedPassword()... yes checking for PQisthreadsafe()... yes checking for PQprepare()... yes checking for PQexecParams()... yes checking for PQescapeString()... yes checking for PQescapeStringConn()... yes checking for PQescapeLiteral()... yes checking for PQescapeIdentifier()... yes checking for PQgetCancel()... yes checking for lo_create()... yes checking for pg_encoding_to_char()... yes checking for pg_char_to_encoding()... yes checking for PQsetClientEncoding()... yes checking for PQlibVersion()... yes checking for PQping()... yes checking for PQsetSingleRowMode()... yes checking for rb_encdb_alias()... yes checking for rb_enc_alias()... no checking for rb_thread_call_without_gvl()... yes checking for rb_thread_call_with_gvl()... yes checking for rb_thread_fd_select()... yes checking for rb_w32_wrap_io_handle()... no checking for PGRES_COPY_BOTH in libpq-fe.h... no checking for PGRES_SINGLE_TUPLE in libpq-fe.h... no checking for PG_DIAG_TABLE_NAME in libpq-fe.h... no checking for struct pgNotify.extra in libpq-fe.h... yes checking for unistd.h... yes checking for ruby/st.h... yes creating extconf.h creating Makefile make "DESTDIR=" compiling gvl_wrappers.c clang: warning: argument unused during compilation: '-fno-fast-math' compiling pg.c clang: warning: argument unused during compilation: '-fno-fast-math' pg.c:272:9: warning: implicit declaration of function 'PQlibVersion' is invalid in C99 [-Wimplicit-function-declaration] return INT2NUM(PQlibVersion()); ^ In file included from pg.c:48: In file included from ./pg.h:17: In file included from /Users/kyledecot/.rvm/rubies/ruby-2.0.0-p247/include/ruby-2.0.0/ruby.h:33: /Users/kyledecot/.rvm/rubies/ruby-2.0.0-p247/include/ruby-2.0.0/ruby/ruby.h:1167:21: note: instantiated from: # define INT2NUM(v) INT2FIX((int)(v)) ^ pg.c:272:9: note: instantiated from: return INT2NUM(PQlibVersion()); ^ pg.c:272:17: note: instantiated from: return INT2NUM(PQlibVersion()); ^ pg.c:375:48: error: use of undeclared identifier 'PQPING_OK' rb_define_const(rb_mPGconstants, "PQPING_OK", INT2FIX(PQPING_OK)); ^ pg.c:375:56: note: instantiated from: rb_define_const(rb_mPGconstants, "PQPING_OK", INT2FIX(PQPING_OK)); ^ pg.c:377:52: error: use of undeclared identifier 'PQPING_REJECT' rb_define_const(rb_mPGconstants, "PQPING_REJECT", INT2FIX(PQPING_REJECT)); ^ pg.c:377:60: note: instantiated from: rb_define_const(rb_mPGconstants, "PQPING_REJECT", INT2FIX(PQPING_REJECT)); ^ pg.c:379:57: error: use of undeclared identifier 'PQPING_NO_RESPONSE' rb_define_const(rb_mPGconstants, "PQPING_NO_RESPONSE", INT2FIX(PQPING_NO_RESPONSE)); ^ pg.c:379:65: note: instantiated from: rb_define_const(rb_mPGconstants, "PQPING_NO_RESPONSE", INT2FIX(PQPING_NO_RESPONSE)); ^ pg.c:381:56: error: use of undeclared identifier 'PQPING_NO_ATTEMPT' rb_define_const(rb_mPGconstants, "PQPING_NO_ATTEMPT", INT2FIX(PQPING_NO_ATTEMPT)); ^ pg.c:381:64: note: instantiated from: rb_define_const(rb_mPGconstants, "PQPING_NO_ATTEMPT", INT2FIX(PQPING_NO_ATTEMPT)); ^ 1 warning and 4 errors generated. make: *** [pg.o] Error 1 Gem files will remain installed in /Users/kyledecot/.rvm/gems/ruby-2.0.0-p247@skateboxes/gems/pg-0.17.0 for inspection. Results logged to /Users/kyledecot/.rvm/gems/ruby-2.0.0-p247@skateboxes/gems/pg-0.17.0/ext/gem_make.out An error occurred while installing pg (0.17.0), and Bundler cannot continue. Make sure that `gem install pg -v '0.17.0'` succeeds before bundling.

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  • Performing Aggregate Functions on Multi-Million Row Tables

    - by Daniel Short
    I'm having some serious performance issues with a multi-million row table that I feel I should be able to get results from fairly quick. Here's a run down of what I have, how I'm querying it, and how long it's taking: I'm running SQL Server 2008 Standard, so Partitioning isn't currently an option I'm attempting to aggregate all views for all inventory for a specific account over the last 30 days. All views are stored in the following table: CREATE TABLE [dbo].[LogInvSearches_Daily]( [ID] [bigint] IDENTITY(1,1) NOT NULL, [Inv_ID] [int] NOT NULL, [Site_ID] [int] NOT NULL, [LogCount] [int] NOT NULL, [LogDay] [smalldatetime] NOT NULL, CONSTRAINT [PK_LogInvSearches_Daily] PRIMARY KEY CLUSTERED ( [ID] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 90) ON [PRIMARY] ) ON [PRIMARY] This table has 132,000,000 records, and is over 4 gigs. A sample of 10 rows from the table: ID Inv_ID Site_ID LogCount LogDay -------------------- ----------- ----------- ----------- ----------------------- 1 486752 48 14 2009-07-21 00:00:00 2 119314 51 16 2009-07-21 00:00:00 3 313678 48 25 2009-07-21 00:00:00 4 298863 0 1 2009-07-21 00:00:00 5 119996 0 2 2009-07-21 00:00:00 6 463777 534 7 2009-07-21 00:00:00 7 339976 503 2 2009-07-21 00:00:00 8 333501 570 4 2009-07-21 00:00:00 9 453955 0 12 2009-07-21 00:00:00 10 443291 0 4 2009-07-21 00:00:00 (10 row(s) affected) I have the following index on LogInvSearches_Daily: /****** Object: Index [IX_LogInvSearches_Daily_LogDay] Script Date: 05/12/2010 11:08:22 ******/ CREATE NONCLUSTERED INDEX [IX_LogInvSearches_Daily_LogDay] ON [dbo].[LogInvSearches_Daily] ( [LogDay] ASC ) INCLUDE ( [Inv_ID], [LogCount]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] I need to pull inventory only from the Inventory for a specific account id. I have an index on the Inventory as well. I'm using the following query to aggregate the data and give me the top 5 records. This query is currently taking 24 seconds to return the 5 rows: StmtText ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SELECT TOP 5 Sum(LogCount) AS Views , DENSE_RANK() OVER(ORDER BY Sum(LogCount) DESC, Inv_ID DESC) AS Rank , Inv_ID FROM LogInvSearches_Daily D (NOLOCK) WHERE LogDay DateAdd(d, -30, getdate()) AND EXISTS( SELECT NULL FROM propertyControlCenter.dbo.Inventory (NOLOCK) WHERE Acct_ID = 18731 AND Inv_ID = D.Inv_ID ) GROUP BY Inv_ID (1 row(s) affected) StmtText ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |--Top(TOP EXPRESSION:((5))) |--Sequence Project(DEFINE:([Expr1007]=dense_rank)) |--Segment |--Segment |--Sort(ORDER BY:([Expr1006] DESC, [D].[Inv_ID] DESC)) |--Stream Aggregate(GROUP BY:([D].[Inv_ID]) DEFINE:([Expr1006]=SUM([LOALogs].[dbo].[LogInvSearches_Daily].[LogCount] as [D].[LogCount]))) |--Sort(ORDER BY:([D].[Inv_ID] ASC)) |--Nested Loops(Inner Join, OUTER REFERENCES:([D].[Inv_ID])) |--Nested Loops(Inner Join, OUTER REFERENCES:([Expr1011], [Expr1012], [Expr1010])) | |--Compute Scalar(DEFINE:(([Expr1011],[Expr1012],[Expr1010])=GetRangeWithMismatchedTypes(dateadd(day,(-30),getdate()),NULL,(6)))) | | |--Constant Scan | |--Index Seek(OBJECT:([LOALogs].[dbo].[LogInvSearches_Daily].[IX_LogInvSearches_Daily_LogDay] AS [D]), SEEK:([D].[LogDay] > [Expr1011] AND [D].[LogDay] < [Expr1012]) ORDERED FORWARD) |--Index Seek(OBJECT:([propertyControlCenter].[dbo].[Inventory].[IX_Inventory_Acct_ID]), SEEK:([propertyControlCenter].[dbo].[Inventory].[Acct_ID]=(18731) AND [propertyControlCenter].[dbo].[Inventory].[Inv_ID]=[LOA (13 row(s) affected) I tried using a CTE to pick up the rows first and aggregate them, but that didn't run any faster, and gives me essentially the same execution plan. (1 row(s) affected) StmtText ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- --SET SHOWPLAN_TEXT ON; WITH getSearches AS ( SELECT LogCount -- , DENSE_RANK() OVER(ORDER BY Sum(LogCount) DESC, Inv_ID DESC) AS Rank , D.Inv_ID FROM LogInvSearches_Daily D (NOLOCK) INNER JOIN propertyControlCenter.dbo.Inventory I (NOLOCK) ON Acct_ID = 18731 AND I.Inv_ID = D.Inv_ID WHERE LogDay DateAdd(d, -30, getdate()) -- GROUP BY Inv_ID ) SELECT Sum(LogCount) AS Views, Inv_ID FROM getSearches GROUP BY Inv_ID (1 row(s) affected) StmtText ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |--Stream Aggregate(GROUP BY:([D].[Inv_ID]) DEFINE:([Expr1004]=SUM([LOALogs].[dbo].[LogInvSearches_Daily].[LogCount] as [D].[LogCount]))) |--Sort(ORDER BY:([D].[Inv_ID] ASC)) |--Nested Loops(Inner Join, OUTER REFERENCES:([D].[Inv_ID])) |--Nested Loops(Inner Join, OUTER REFERENCES:([Expr1008], [Expr1009], [Expr1007])) | |--Compute Scalar(DEFINE:(([Expr1008],[Expr1009],[Expr1007])=GetRangeWithMismatchedTypes(dateadd(day,(-30),getdate()),NULL,(6)))) | | |--Constant Scan | |--Index Seek(OBJECT:([LOALogs].[dbo].[LogInvSearches_Daily].[IX_LogInvSearches_Daily_LogDay] AS [D]), SEEK:([D].[LogDay] > [Expr1008] AND [D].[LogDay] < [Expr1009]) ORDERED FORWARD) |--Index Seek(OBJECT:([propertyControlCenter].[dbo].[Inventory].[IX_Inventory_Acct_ID] AS [I]), SEEK:([I].[Acct_ID]=(18731) AND [I].[Inv_ID]=[LOALogs].[dbo].[LogInvSearches_Daily].[Inv_ID] as [D].[Inv_ID]) ORDERED FORWARD) (8 row(s) affected) (1 row(s) affected) So given that I'm getting good Index Seeks in my execution plan, what can I do to get this running faster? Thanks, Dan

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  • form submitting with mechanize and Python

    - by MATELIN Alexis
    I'm trying to scrap a website that requires to submit two forms : a first one to loggin and a second one to specify my research. I'm using Python and the mechanize package. No problem with the first one, but i just can't figure out how to pass through the second one. Here is the part of my code related to the firm above-mentionned agemin=18 agemax=25 by='region' country='France' region=2 newcustomers=1 browser.select_form(nr=0) browser['age[min]']=agemin browser['age[max]']=agemax browser['country']=country browser['region']=region browser['by']=by browser['new-customers']=newcustomers response=browser.submit() content=response.read() but when I submit the variable 'age[min]' by example, I get the following error message : TypeError: object of type 'int' has no len() to give you some more informations, here is what I get with 'print br.form' <POST http://www.adopteunmec.com/qsearch/ajax_quick application/x-www-form-urlencoded <SelectControl(age[min]=[, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, *30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99])> <SelectControl(age[max]=[, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, *45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99])> <SelectControl(by=[*region, distance])> <SelectControl(country=[*fr, be, ch, ca])> <SelectControl(region=[*1, 2, 3, 4, 5, 6, 7, 8, 22, 23, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 11])> <SelectControl(distance[min]=[*, 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520, 530, 540, 550, 560, 570, 580, 590, 600, 610, 620, 630, 640, 650, 660, 670, 680, 690, 700, 710, 720, 730, 740, 750, 760, 770, 780, 790, 800, 810, 820, 830, 840, 850, 860, 870, 880, 890, 900, 910, 920, 930, 940, 950, 960, 970, 980, 990, 1000])> <SelectControl(distance[max]=[, 0, 10, 20, 30, 40, 50, 60, 70, *80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520, 530, 540, 550, 560, 570, 580, 590, 600, 610, 620, 630, 640, 650, 660, 670, 680, 690, 700, 710, 720, 730, 740, 750, 760, 770, 780, 790, 800, 810, 820, 830, 840, 850, 860, 870, 880, 890, 900, 910, 920, 930, 940, 950, 960, 970, 980, 990, 1000])> <CheckboxControl(new=[*1])>> My guess is that the form needs an object (like a list) containing all the variables to accept it ; that's why it refuses the variables submited one by one. Thank you in advance for any help ! Alexis

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  • xml validation problem

    - by Hoax
    I'm having trouble validating a schema I created. "cvc-elt.1: Cannot find the declaration of element 'category'." xsd <?xml version="1.0" encoding="UTF-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="list"> <xs:complexType> <xs:sequence> <xs:element name="category" type="categoryType" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> </xs:element> <xs:complexType name="categoryType"> <xs:sequence> <xs:element name="name" type="xs:string"/> <xs:element name="desc" type="xs:string"/> <xs:element name="icon" type="xs:base64Binary"/> <xs:element name="poi" type="poiType" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:complexType name="poiType"> <xs:sequence> <xs:element name="name" type="xs:string"/> <xs:element name="desc" type="xs:string"/> <xs:element name="longitude" type="xs:long"/> <xs:element name="latitude" type="xs:long"/> <xs:element name="url" type="xs:string" minOccurs="0" maxOccurs="unbounded"/> <xs:element name="image" type="xs:base64Binary" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> </xs:schema> xml <?xml version="1.0" encoding="UTF-8"?> <list SchemaLocation="sem.xsd"> <category> <name>Sehenswürdigkeiten</name> <desc>sehenswerte und berühmte Orte, die man gesehen haben muss</desc> <icon>...</icon> <poi> <name>Linzer Landhaus</name> <desc>Sitz des Oberösterreichsichen Landtags</desc> <url>http://www.linz.at/tourismus/7569.asp</url> <longitude>48.304107</longitude> <latitude>14.286025</latitude> <image>...</image> </poi> <poi> <name>Ars Electronica</name> <desc>Museum der digitalen Künste</desc> <url>http://www.aec.at</url> <longitude>48.309788</longitude> <latitude>14.284179</latitude> <image>...</image> <image>...</image> </poi> </category> <category>...</category> </list> any idea whats wrong? cheers hoax

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  • "C variable type sizes are machine dependent." Is it really true? signed & unsigned numbers ;

    - by claws
    Hello, I've been told that C types are machine dependent. Today I wanted to verify it. void legacyTypes() { /* character types */ char k_char = 'a'; //Signedness --> signed & unsigned signed char k_char_s = 'a'; unsigned char k_char_u = 'a'; /* integer types */ int k_int = 1; /* Same as "signed int" */ //Signedness --> signed & unsigned signed int k_int_s = -2; unsigned int k_int_u = 3; //Size --> short, _____, long, long long short int k_s_int = 4; long int k_l_int = 5; long long int k_ll_int = 6; /* real number types */ float k_float = 7; double k_double = 8; } I compiled it on a 32-Bit machine using minGW C compiler _legacyTypes: pushl %ebp movl %esp, %ebp subl $48, %esp movb $97, -1(%ebp) # char movb $97, -2(%ebp) # signed char movb $97, -3(%ebp) # unsigned char movl $1, -8(%ebp) # int movl $-2, -12(%ebp)# signed int movl $3, -16(%ebp) # unsigned int movw $4, -18(%ebp) # short int movl $5, -24(%ebp) # long int movl $6, -32(%ebp) # long long int movl $0, -28(%ebp) movl $0x40e00000, %eax movl %eax, -36(%ebp) fldl LC2 fstpl -48(%ebp) leave ret I compiled the same code on 64-Bit processor (Intel Core 2 Duo) on GCC (linux) legacyTypes: .LFB2: .cfi_startproc pushq %rbp .cfi_def_cfa_offset 16 movq %rsp, %rbp .cfi_offset 6, -16 .cfi_def_cfa_register 6 movb $97, -1(%rbp) # char movb $97, -2(%rbp) # signed char movb $97, -3(%rbp) # unsigned char movl $1, -12(%rbp) # int movl $-2, -16(%rbp)# signed int movl $3, -20(%rbp) # unsigned int movw $4, -6(%rbp) # short int movq $5, -32(%rbp) # long int movq $6, -40(%rbp) # long long int movl $0x40e00000, %eax movl %eax, -24(%rbp) movabsq $4620693217682128896, %rax movq %rax, -48(%rbp) leave ret Observations char, signed char, unsigned char, int, unsigned int, signed int, short int, unsigned short int, signed short int all occupy same no. of bytes on both 32-Bit & 64-Bit Processor. The only change is in long int & long long int both of these occupy 32-bit on 32-bit machine & 64-bit on 64-bit machine. And also the pointers, which take 32-bit on 32-bit CPU & 64-bit on 64-bit CPU. Questions: I cannot say, what the books say is wrong. But I'm missing something here. What exactly does "Variable types are machine dependent mean?" As you can see, There is no difference between instructions for unsigned & signed numbers. Then how come the range of numbers that can be addressed using both is different? I was reading http://stackoverflow.com/questions/2511246/how-to-maintain-fixed-size-of-c-variable-types-over-different-machines I didn't get the purpose of the question or their answers. What maintaining fixed size? They all are the same. I didn't understand how those answers are going to ensure the same size.

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  • submit a form and get json response

    - by ruhit
    I have made an application to convert text to image formate and its workingout well. Now I want json response when i fill the form of the html page, my html page is given below...Please help me to do this <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <html lang="en"> <head> <title>kandarpa</title> </head> <div> <form action="img.php" method="get"><b>enter your text here:</b><br/> <textarea id="text" name="text" style=" background-color:inherit" cols="50" rows="10"></textarea><br/><br/> <input type="submit" value="Text to Image" name="submit"> </div><br/> <div> <tr> <td>Font Size</td> <td><select name="size"> <option value="8">8</option> <option value="12">12</option> <option value="18">18</option> <option value="24">24</option> <option value="32" selected="selected">32</option> <option value="48">48</option> <option value="64">64</option> </select></td> </tr> </div><br/> <div> <td>Font </td> <td><select name="font" id="font"> <option value="Fonts/arial.ttf">Arial</option> <option value="Fonts/times.ttf">Times New Roman</option> <option value="Fonts/tahoma.ttf">Tahoma</option> <option value="Fonts/Grand Stylus.ttf">Grand Stylus</option> <option value="Fonts/GARAIT.ttf">G</option> </select></td> </tr> </div><br/> <div> <td>Choose your Color </td> <td><select name="color" id="color"> <option value="white">white</option> <option value="black">black</option> <option value="grey">grey</option> <option value="red">red</option> </select></td> </tr> </div> <br/> <div> <td>Height </td> <input type="text" id="height" name="height"> </td><br/><br/> <td>Width</td> <input type="text" id="width" name="width"> </div> </form> </body> </html>

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  • Sun Storage 2500-M2 Array and Sun Fire X4470 M2 Server

    - by nospam(at)example.com (Joerg Moellenkamp)
    There is some new hardware in the Oracle portfolio. The first one is the Sun Fire X4470 M2 Server. There was a lot of talk about the system before because of benchmark results, but now it's finally announced. Two or four Intel Xeon E7-4800. Up to 1 TB as the system provides 64 DIMM slots with 16 GB DDR DIMMs. The memory is placed on those riser cards right behind the fans of this chassis. Up to 6 internal drives. In a 3 RU package. Another announcement was the Sun Storage 2500 M2 announced yesterday: From 5 to 48 drives (the later number with three expansion trays) for up to 28.8 TB of storage. The array is SAS based internally. You can put 300GB and 600 GB in it. The 2540-M2 provides 4 (8 optional) FC ports with up to 8 GB/sec. The 2530-M2 has 4 SAS2 ports with up to 6 GBit/s. It has 2 integrated controllers providing 2 GB cache protected by a power backup for 72 hours. The controller enables the arrays to deliver 0, 1, 10, 3, 5, 6, (P+Q) RAID levels.

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  • How can I install a 32bit python on 64 bit Ubuntu

    - by moose
    I am using Ubuntu 10.10 (Linux pc07 2.6.35-27-generic #48-Ubuntu SMP Tue Feb 22 20:25:46 UTC 2011 x86_64 GNU/Linux) and the default python package (Python 2.6.6). I would like to install python-psyco to improve the performance of one of my scripts, but only python-psyco-doc is available for 64 bit. I tried a virtual machine, but the the performance boost is much less on the virtual machine than on a "real" installed 32-bit Ubuntu. So my question is: How can I install a 32Bit Python with psyco on my 64Bit Ubuntu machine? edit: I've found this article and made this: Download "Python 2.7.1 bzipped source tarball" from http://python.org/download/ Go in the directory where you decompressed "Python 2.7.1" $ OPT=-m32 LDFLAGS=-m32 ./configure --prefix=/opt/pym32 $ make But I got this error: gcc -pthread -m32 -Xlinker -export-dynamic -o python \ Modules/python.o \ libpython2.7.a -lpthread -ldl -lutil -lm libpython2.7.a(posixmodule.o): In function `posix_tmpnam': /home/moose/Downloads/Python-2.7.1/./Modules/posixmodule.c:7346: warning: the use of `tmpnam_r' is dangerous, better use `mkstemp' libpython2.7.a(posixmodule.o): In function `posix_tempnam': /home/moose/Downloads/Python-2.7.1/./Modules/posixmodule.c:7301: warning: the use of `tempnam' is dangerous, better use `mkstemp' Segmentation fault make: *** [sharedmods] Fehler 139 edit2: Now I've found http://indefinitestudies.org/2010/02/08/how-to-build-32-bit-python-on-ubuntu-9-10-x86_64/ and it seems like this worked: $ cd Python-2.7.1 $ CC="gcc -m32" LDFLAGS="-L/lib32 -L/usr/lib32 \ -Lpwd/lib32 -Wl,-rpath,/lib32 -Wl,-rpath,/usr/lib32" \ ./configure --prefix=/opt/pym32 $ make $ sudo make install But installing psyco didn't work: Download the lastest snapshot: http://psyco.sourceforge.net/download.html Extract it and go into the folder $ python setup.py install This error appeared: PROCESSOR = 'ivm' running install running build running build_py running build_ext building 'psyco._psyco' extension gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -DALL_STATIC=1 -Ic/ivm -I/usr/include/python2.6 -c c/psyco.c -o build/temp.linux-x86_64-2.6/c/psyco.o In file included from c/psyco.c:1: c/psyco.h:9: fatal error: Python.h: Datei oder Verzeichnis nicht gefunden compilation terminated. error: command 'gcc' failed with exit status 1

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  • Calling Web Service Functions Asynchronously from a Web Page

    - by SGWellens
    Over on the Asp.Net forums where I moderate, a user had a problem calling a Web Service from a web page asynchronously. I tried his code on my machine and was able to reproduce the problem. I was able to solve his problem, but only after taking the long scenic route through some of the more perplexing nuances of Web Services and Proxies. Here is the fascinating story of that journey. Start with a simple Web Service     public class Service1 : System.Web.Services.WebService    {        [WebMethod]        public string HelloWorld()        {            // sleep 10 seconds            System.Threading.Thread.Sleep(10 * 1000);            return "Hello World";        }    } The 10 second delay is added to make calling an asynchronous function more apparent. If you don't call the function asynchronously, it takes about 10 seconds for the page to be rendered back to the client. If the call is made from a Windows Forms application, the application freezes for about 10 seconds. Add the web service to a web site. Right-click the project and select "Add Web Reference…" Next, create a web page to call the Web Service. Note: An asp.net web page that calls an 'Async' method must have the Async property set to true in the page's header: <%@ Page Language="C#"          AutoEventWireup="true"          CodeFile="Default.aspx.cs"          Inherits="_Default"           Async='true'  %> Here is the code to create the Web Service proxy and connect the event handler. Shrewdly, we make the proxy object a member of the Page class so it remains instantiated between the various events. public partial class _Default : System.Web.UI.Page {    localhost.Service1 MyService;  // web service proxy     // ---- Page_Load ---------------------------------     protected void Page_Load(object sender, EventArgs e)    {        MyService = new localhost.Service1();        MyService.HelloWorldCompleted += EventHandler;          } Here is the code to invoke the web service and handle the event:     // ---- Async and EventHandler (delayed render) --------------------------     protected void ButtonHelloWorldAsync_Click(object sender, EventArgs e)    {        // blocks        ODS("Pre HelloWorldAsync...");        MyService.HelloWorldAsync();        ODS("Post HelloWorldAsync");    }    public void EventHandler(object sender, localhost.HelloWorldCompletedEventArgs e)    {        ODS("EventHandler");        ODS("    " + e.Result);    }     // ---- ODS ------------------------------------------------    //    // Helper function: Output Debug String     public static void ODS(string Msg)    {        String Out = String.Format("{0}  {1}", DateTime.Now.ToString("hh:mm:ss.ff"), Msg);        System.Diagnostics.Debug.WriteLine(Out);    } I added a utility function I use a lot: ODS (Output Debug String). Rather than include the library it is part of, I included it in the source file to keep this example simple. Fire up the project, open up a debug output window, press the button and we get this in the debug output window: 11:29:37.94 Pre HelloWorldAsync... 11:29:37.94 Post HelloWorldAsync 11:29:48.94 EventHandler 11:29:48.94 Hello World   Sweet. The asynchronous call was made and returned immediately. About 10 seconds later, the event handler fires and we get the result. Perfect….right? Not so fast cowboy. Watch the browser during the call: What the heck? The page is waiting for 10 seconds. Even though the asynchronous call returned immediately, Asp.Net is waiting for the event to fire before it renders the page. This is NOT what we wanted. I experimented with several techniques to work around this issue. Some may erroneously describe my behavior as 'hacking' but, since no ingesting of Twinkies was involved, I do not believe hacking is the appropriate term. If you examine the proxy that was automatically created, you will find a synchronous call to HelloWorld along with an additional set of methods to make asynchronous calls. I tried the other asynchronous method supplied in the proxy:     // ---- Begin and CallBack ----------------------------------     protected void ButtonBeginHelloWorld_Click(object sender, EventArgs e)    {        ODS("Pre BeginHelloWorld...");        MyService.BeginHelloWorld(AsyncCallback, null);        ODS("Post BeginHelloWorld");    }    public void AsyncCallback(IAsyncResult ar)    {        String Result = MyService.EndHelloWorld(ar);         ODS("AsyncCallback");        ODS("    " + Result);    } The BeginHelloWorld function in the proxy requires a callback function as a parameter. I tested it and the debug output window looked like this: 04:40:58.57 Pre BeginHelloWorld... 04:40:58.57 Post BeginHelloWorld 04:41:08.58 AsyncCallback 04:41:08.58 Hello World It works the same as before except for one critical difference: The page rendered immediately after the function call. I was worried the page object would be disposed after rendering the page but the system was smart enough to keep the page object in memory to handle the callback. Both techniques have a use: Delayed Render: Say you want to verify a credit card, look up shipping costs and confirm if an item is in stock. You could have three web service calls running in parallel and not render the page until all were finished. Nice. You can send information back to the client as part of the rendered page when all the services are finished. Immediate Render: Say you just want to start a service running and return to the client. You can do that too. However, the page gets sent to the client before the service has finished running so you will not be able to update parts of the page when the service finishes running. Summary: YourFunctionAsync() and an EventHandler will not render the page until the handler fires. BeginYourFunction() and a CallBack function will render the page as soon as possible. I found all this to be quite interesting and did a lot of searching and researching for documentation on this subject….but there isn't a lot out there. The biggest clues are the parameters that can be sent to the WSDL.exe program: http://msdn.microsoft.com/en-us/library/7h3ystb6(VS.100).aspx Two parameters are oldAsync and newAsync. OldAsync will create the Begin/End functions; newAsync will create the Async/Event functions. Caveat: I haven't tried this but it was stated in this article. I'll leave confirming this as an exercise for the student J. Included Code: I'm including the complete test project I created to verify the findings. The project was created with VS 2008 SP1. There is a solution file with 3 projects, the 3 projects are: Web Service Asp.Net Application Windows Forms Application To decide which program runs, you right-click a project and select "Set as Startup Project". I created and played with the Windows Forms application to see if it would reveal any secrets. I found that in the Windows Forms application, the generated proxy did NOT include the Begin/Callback functions. Those functions are only generated for Asp.Net pages. Probably for the reasons discussed earlier. Maybe those Microsoft boys and girls know what they are doing. I hope someone finds this useful. Steve Wellens

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  • Hosting a website on Heroku.... I know how to, but im running into problems!

    - by Thomas Miller
    I'm starting to learn more on the back-end scale of programing. Recently I started up Heroku for the second or third time. This time I actually installed the Git update to my Mac and installed Heroku in the terminal. I wanted to upload a static html site with the sinatra gem. Everything worked out fine inside the terminal, though I added sinatra after I got everything working and the file with the site hooked up to Heroku. In my logs I did see that I was missing the sinatra gem, so I installed it. My site contains both the proper app.rb and config.ru files. I have nothing showing up online. Just a blank screen! Contacting Heroku on this problem has been very difficult. I get a responce every day, and on every day I respond with a question to the answer that didn't help me at all. 2011-05-18T00:25:20+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:20] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:20+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T00:25:26+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:26] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:26+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=5ms bytes=313 2011-05-17T18:25:51-07:00 heroku[web.1]: Idling 2011-05-17T18:26:01-07:00 heroku[web.1]: State changed from up to down 2011-05-18T01:26:01+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T01:26:01+00:00 app[web.1]: Stopping ... 2011-05-18T01:26:02+00:00 heroku[web.1]: Process exited 2011-05-17T20:12:46-07:00 heroku[web.1]: Unidling 2011-05-17T20:12:47-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T03:12:48+00:00 heroku[web.1]: Starting process with command: thin -p 40055 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T03:12:49+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T03:12:49+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T03:12:49+00:00 app[web.1]: Listening on 0.0.0.0:40055, CTRL+C to stop 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=9954ms service=6ms bytes=565 2011-05-18T03:12:50+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:50] "GET /style.css HTTP/1.1" 200 - 0.0012 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-17T20:12:50-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T03:12:51+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:51] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T03:12:51+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET / HTTP/1.1" 200 293 0.0011 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET / HTTP/1.1" 200 293 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=4ms bytes=565 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET /style.css HTTP/1.1" 200 - 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T03:57:08+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:08] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-17T21:58:27-07:00 heroku[web.1]: Idling 2011-05-18T04:58:30+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T04:58:30+00:00 app[web.1]: Stopping ... 2011-05-18T04:58:30+00:00 heroku[web.1]: Process exited 2011-05-17T21:58:33-07:00 heroku[web.1]: State changed from up to down 2011-05-17T23:11:58-07:00 heroku[web.1]: Unidling 2011-05-17T23:11:58-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T06:12:00+00:00 heroku[web.1]: Starting process with command: thin -p 40091 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T06:12:01+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T06:12:01+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T06:12:01+00:00 app[web.1]: Listening on 0.0.0.0:40091, CTRL+C to stop 2011-05-18T06:12:01+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:01] "GET / HTTP/1.1" 200 293 0.0017 2011-05-18T06:12:02+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=3209ms service=5ms bytes=565 2011-05-18T06:12:03+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:03] "GET /style.css HTTP/1.1" 200 - 0.0019 2011-05-17T23:12:08-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T00:13:13-07:00 heroku[web.1]: Idling 2011-05-18T00:13:16-07:00 heroku[web.1]: State changed from up to down 2011-05-18T07:13:16+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T07:13:16+00:00 app[web.1]: Stopping ... 2011-05-18T07:13:17+00:00 heroku[web.1]: Process exited 2011-05-18T01:54:21-07:00 heroku[web.1]: Unidling 2011-05-18T01:54:21-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T08:54:23+00:00 heroku[web.1]: Starting process with command: thin -p 59491 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T08:54:24+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T08:54:24+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T08:54:24+00:00 app[web.1]: Listening on 0.0.0.0:59491, CTRL+C to stop 2011-05-18T01:54:28-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=6943ms service=6ms bytes=565 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /style.css HTTP/1.1" 200 - 0.0014 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T02:55:23-07:00 heroku[web.1]: Idling 2011-05-18T02:55:33-07:00 heroku[web.1]: State changed from up to down 2011-05-18T09:55:34+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T09:55:34+00:00 app[web.1]: Stopping ... 2011-05-18T09:55:34+00:00 heroku[web.1]: Process exited 2011-05-18T07:23:10-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T14:23:12+00:00 heroku[web.1]: Starting process with command: thin -p 20560 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T14:23:13+00:00 app[web.1]: Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T14:23:13+00:00 app[web.1]: Maximum connections set to 1024 2011-05-18T14:23:13+00:00 app[web.1]: Listening on 0.0.0.0:20560, CTRL+C to stop 2011-05-18T07:23:13-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=7ms bytes=565 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /style.css HTTP/1.1" 200 - 0.0015 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /favicon.ico HTTP/1.1" 404 18 0.0009 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T08:24:03-07:00 heroku[web.1]: Idling 2011-05-18T08:24:07-07:00 heroku[web.1]: State changed from up to down 2011-05-18T15:24:07+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T15:24:07+00:00 app[web.1]: Stopping ... 2011-05-18T17:34:27-07:00 heroku[web.1]: Unidling 2011-05-18T17:34:28-07:00 heroku[web.1]: State changed from created to starting 2011-05-19T00:34:29+00:00 heroku[web.1]: Starting process with command: thin -p 57621 -e production -R /home/heroku_rack/heroku.ru start 2011-05-18T17:34:31-07:00 heroku[web.1]: State changed from starting to up 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET / HTTP/1.1" 200 293 0.0016 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET /style.css HTTP/1.1" 200 - 0.0011 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-19T00:34:34+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-19T00:34:34+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:34] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T18:35:48-07:00 heroku[web.1]: Idling 2011-05-18T18:35:51-07:00 heroku[web.1]: State changed from up to down

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  • I'm trying to install VMWare tools on Ubuntu 12.04.2 LTS and I seem to have a problem with Kernel headers

    - by Pedro Irusta
    I have Ubuntu 12.04.2 LTS installed on a VMware machine on Windows 7 host. I seem to have a problem with Kernel headers when trying to install them I did: sudo apt-get install gcc make build-essential linux-headers-$(uname -r) Reading package lists... Done Building dependency tree Reading state information... Done gcc is already the newest version. build-essential is already the newest version. linux-headers-3.5.0-28-generic is already the newest version. make is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 100 not upgraded. However, when installing VMware tools I get the following error: make[1]: Entering directory `/usr/src/linux-headers-3.5.0-28-generic' CC [M] /tmp/vmware-root/modules/vmhgfs-only/backdoor.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/backdoorGcc32.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/bdhandler.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/cpName.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/cpNameLinux.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/cpNameLite.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/dentry.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/dir.o CC [M] /tmp/vmware-root/modules/vmhgfs-only/file.o /tmp/vmware-root/modules/vmhgfs-only/file.c:122:4: warning: initialization from incompatible pointer type [enabled by default] /tmp/vmware-root/modules/vmhgfs-only/file.c:122:4: warning: (near initialization for ‘HgfsFileFileOperations.fsync’) [enabled by default] CC [M] /tmp/vmware-root/modules/vmhgfs-only/filesystem.o /tmp/vmware-root/modules/vmhgfs-only/filesystem.c:48:28: fatal error: linux/smp_lock.h: No such file or directory compilation terminated. make[2]: *** [/tmp/vmware-root/modules/vmhgfs-only/filesystem.o] Error 1 make[1]: *** [_module_/tmp/vmware-root/modules/vmhgfs-only] Error 2 make[1]: Leaving directory `/usr/src/linux-headers-3.5.0-28-generic' make: *** [vmhgfs.ko] Error 2 make: Leaving directory `/tmp/vmware-root/modules/vmhgfs-only' Any help appreciated!

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  • Hosting a website on Heroku.... I know how to, but im running into problems!

    - by Thomas Miller
    I'm starting to learn more on the back-end scale of programing. Recently I started up Heroku for the second or third time. This time I actually installed the Git update to my Mac and installed Heroku in the terminal. I wanted to upload a static html site with the Sinatra gem. Everything worked out fine inside the terminal, though I added Sinatra after I got everything working and the file with the site hooked up to Heroku. In my logs I did see that I was missing the Sinatra gem, so I installed it. My site contains both the proper app.rb and config.ru files. I have nothing showing up online. Just a blank screen! Contacting Heroku on this problem has been very difficult. I get a response every day, and on every day I respond with a question to the answer that didn't help me at all. 2011-05-18T00:25:20+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:20] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:20+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T00:25:26+00:00 app[web.1]: 71.198.0.51 - - [17/May/2011 17:25:26] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T00:25:26+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=5ms bytes=313 2011-05-17T18:25:51-07:00 heroku[web.1]: Idling 2011-05-17T18:26:01-07:00 heroku[web.1]: State changed from up to down 2011-05-18T01:26:01+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T01:26:01+00:00 app[web.1]: >> Stopping ... 2011-05-18T01:26:02+00:00 heroku[web.1]: Process exited 2011-05-17T20:12:46-07:00 heroku[web.1]: Unidling 2011-05-17T20:12:47-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T03:12:48+00:00 heroku[web.1]: Starting process with command: `thin -p 40055 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T03:12:49+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T03:12:49+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T03:12:49+00:00 app[web.1]: >> Listening on 0.0.0.0:40055, CTRL+C to stop 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=9954ms service=6ms bytes=565 2011-05-18T03:12:50+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:50] "GET /style.css HTTP/1.1" 200 - 0.0012 2011-05-18T03:12:50+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-17T20:12:50-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T03:12:51+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:12:51] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T03:12:51+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET / HTTP/1.1" 200 293 0.0011 2011-05-18T03:13:05+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T03:13:05+00:00 app[web.1]: 70.91.206.114 - - [17/May/2011 20:13:05] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET / HTTP/1.1" 200 293 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=4ms bytes=565 2011-05-18T03:57:05+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:05] "GET /style.css HTTP/1.1" 200 - 0.0007 2011-05-18T03:57:05+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T03:57:08+00:00 app[web.1]: 172.18.33.56, 58.96.134.66 - - [17/May/2011 20:57:08] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-17T21:58:27-07:00 heroku[web.1]: Idling 2011-05-18T04:58:30+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T04:58:30+00:00 app[web.1]: >> Stopping ... 2011-05-18T04:58:30+00:00 heroku[web.1]: Process exited 2011-05-17T21:58:33-07:00 heroku[web.1]: State changed from up to down 2011-05-17T23:11:58-07:00 heroku[web.1]: Unidling 2011-05-17T23:11:58-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T06:12:00+00:00 heroku[web.1]: Starting process with command: `thin -p 40091 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T06:12:01+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T06:12:01+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T06:12:01+00:00 app[web.1]: >> Listening on 0.0.0.0:40091, CTRL+C to stop 2011-05-18T06:12:01+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:01] "GET / HTTP/1.1" 200 293 0.0017 2011-05-18T06:12:02+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=3209ms service=5ms bytes=565 2011-05-18T06:12:03+00:00 app[web.1]: 183.97.156.226 - - [17/May/2011 23:12:03] "GET /style.css HTTP/1.1" 200 - 0.0019 2011-05-17T23:12:08-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T00:13:13-07:00 heroku[web.1]: Idling 2011-05-18T00:13:16-07:00 heroku[web.1]: State changed from up to down 2011-05-18T07:13:16+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T07:13:16+00:00 app[web.1]: >> Stopping ... 2011-05-18T07:13:17+00:00 heroku[web.1]: Process exited 2011-05-18T01:54:21-07:00 heroku[web.1]: Unidling 2011-05-18T01:54:21-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T08:54:23+00:00 heroku[web.1]: Starting process with command: `thin -p 59491 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T08:54:24+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T08:54:24+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T08:54:24+00:00 app[web.1]: >> Listening on 0.0.0.0:59491, CTRL+C to stop 2011-05-18T01:54:28-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=6943ms service=6ms bytes=565 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /style.css HTTP/1.1" 200 - 0.0014 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 app[web.1]: 62.244.82.72 - - [18/May/2011 01:54:28] "GET /favicon.ico HTTP/1.1" 404 18 0.0008 2011-05-18T08:54:28+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=1ms bytes=313 2011-05-18T02:55:23-07:00 heroku[web.1]: Idling 2011-05-18T02:55:33-07:00 heroku[web.1]: State changed from up to down 2011-05-18T09:55:34+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T09:55:34+00:00 app[web.1]: >> Stopping ... 2011-05-18T09:55:34+00:00 heroku[web.1]: Process exited 2011-05-18T07:23:10-07:00 heroku[web.1]: State changed from created to starting 2011-05-18T14:23:12+00:00 heroku[web.1]: Starting process with command: `thin -p 20560 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T14:23:13+00:00 app[web.1]: >> Thin web server (v1.2.6 codename Crazy Delicious) 2011-05-18T14:23:13+00:00 app[web.1]: >> Maximum connections set to 1024 2011-05-18T14:23:13+00:00 app[web.1]: >> Listening on 0.0.0.0:20560, CTRL+C to stop 2011-05-18T07:23:13-07:00 heroku[web.1]: State changed from starting to up 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET / HTTP/1.1" 200 293 0.0018 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=7ms bytes=565 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /style.css HTTP/1.1" 200 - 0.0015 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-18T14:23:14+00:00 app[web.1]: 12.183.19.10 - - [18/May/2011 07:23:14] "GET /favicon.ico HTTP/1.1" 404 18 0.0009 2011-05-18T14:23:14+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms bytes=313 2011-05-18T08:24:03-07:00 heroku[web.1]: Idling 2011-05-18T08:24:07-07:00 heroku[web.1]: State changed from up to down 2011-05-18T15:24:07+00:00 heroku[web.1]: Stopping process with SIGTERM 2011-05-18T15:24:07+00:00 app[web.1]: >> Stopping ... 2011-05-18T17:34:27-07:00 heroku[web.1]: Unidling 2011-05-18T17:34:28-07:00 heroku[web.1]: State changed from created to starting 2011-05-19T00:34:29+00:00 heroku[web.1]: Starting process with command: `thin -p 57621 -e production -R /home/heroku_rack/heroku.ru start` 2011-05-18T17:34:31-07:00 heroku[web.1]: State changed from starting to up 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/ dyno=web.1 queue=0 wait=0ms service=5ms bytes=565 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET / HTTP/1.1" 200 293 0.0016 2011-05-19T00:34:32+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:32] "GET /style.css HTTP/1.1" 200 - 0.0011 2011-05-19T00:34:32+00:00 heroku[router]: GET pxlc.heroku.com/style.css dyno=web.1 queue=0 wait=0ms service=2ms bytes=269 2011-05-19T00:34:34+00:00 heroku[router]: GET pxlc.heroku.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=4ms bytes=313 2011-05-19T00:34:34+00:00 app[web.1]: 97.83.58.74 - - [18/May/2011 17:34:34] "GET /favicon.ico HTTP/1.1" 404 18 0.0007 2011-05-18T18:35:48-07:00 heroku[web.1]: Idling 2011-05-18T18:35:51-07:00 heroku[web.1]: State changed from up to down

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  • NHibernate Conventions

    - by Ricardo Peres
    Introduction It seems that nowadays everyone loves conventions! Not the ones that you go to, but the ones that you use, that is! It just happens that NHibernate also supports conventions, and we’ll see exactly how. Conventions in NHibernate are supported in two ways: Naming of tables and columns when not explicitly indicated in the mappings; Full domain mapping. Naming of Tables and Columns Since always NHibernate has supported the concept of a naming strategy. A naming strategy in NHibernate converts class and property names to table and column names and vice-versa, when a name is not explicitly supplied. In concrete, it must be a realization of the NHibernate.Cfg.INamingStrategy interface, of which NHibernate includes two implementations: DefaultNamingStrategy: the default implementation, where each column and table are mapped to identically named properties and classes, for example, “MyEntity” will translate to “MyEntity”; ImprovedNamingStrategy: underscores (_) are used to separate Pascal-cased fragments, for example, entity “MyEntity” will be mapped to a “my_entity” table. The naming strategy can be defined at configuration level (the Configuration instance) by calling the SetNamingStrategy method: 1: cfg.SetNamingStrategy(ImprovedNamingStrategy.Instance); Both the DefaultNamingStrategy and the ImprovedNamingStrategy classes offer singleton instances in the form of Instance static fields. DefaultNamingStrategy is the one NHibernate uses, if you don’t specify one. Domain Mapping In mapping by code, we have the choice of relying on conventions to do the mapping automatically. This means a class will inspect our classes and decide how they will relate to the database objects. The class that handles conventions is NHibernate.Mapping.ByCode.ConventionModelMapper, a specialization of the base by code mapper, NHibernate.Mapping.ByCode.ModelMapper. The ModelMapper relies on an internal SimpleModelInspector to help it decide what and how to map, but the mapper lets you override its decisions.  You apply code conventions like this: 1: //pick the types that you want to map 2: IEnumerable<Type> types = Assembly.GetExecutingAssembly().GetExportedTypes(); 3:  4: //conventions based mapper 5: ConventionModelMapper mapper = new ConventionModelMapper(); 6:  7: HbmMapping mapping = mapper.CompileMappingFor(types); 8:  9: //the one and only configuration instance 10: Configuration cfg = ...; 11: cfg.AddMapping(mapping); This is a very simple example, it lacks, at least, the id generation strategy, which you can add by adding an event handler like this: 1: mapper.BeforeMapClass += (IModelInspector modelInspector, Type type, IClassAttributesMapper classCustomizer) => 2: { 3: classCustomizer.Id(x => 4: { 5: //set the hilo generator 6: x.Generator(Generators.HighLow); 7: }); 8: }; The mapper will fire events like this whenever it needs to get information about what to do. And basically this is all it takes to automatically map your domain! It will correctly configure many-to-one and one-to-many relations, choosing bags or sets depending on your collections, will get the table and column names from the naming strategy we saw earlier and will apply the usual defaults to all properties, such as laziness and fetch mode. However, there is at least one thing missing: many-to-many relations. The conventional mapper doesn’t know how to find and configure them, which is a pity, but, alas, not difficult to overcome. To start, for my projects, I have this rule: each entity exposes a public property of type ISet<T> where T is, of course, the type of the other endpoint entity. Extensible as it is, NHibernate lets me implement this very easily: 1: mapper.IsOneToMany((MemberInfo member, Boolean isLikely) => 2: { 3: Type sourceType = member.DeclaringType; 4: Type destinationType = member.GetMemberFromDeclaringType().GetPropertyOrFieldType(); 5:  6: //check if the property is of a generic collection type 7: if ((destinationType.IsGenericCollection() == true) && (destinationType.GetGenericArguments().Length == 1)) 8: { 9: Type destinationEntityType = destinationType.GetGenericArguments().Single(); 10:  11: //check if the type of the generic collection property is an entity 12: if (mapper.ModelInspector.IsEntity(destinationEntityType) == true) 13: { 14: //check if there is an equivalent property on the target type that is also a generic collection and points to this entity 15: PropertyInfo collectionInDestinationType = destinationEntityType.GetProperties().Where(x => (x.PropertyType.IsGenericCollection() == true) && (x.PropertyType.GetGenericArguments().Length == 1) && (x.PropertyType.GetGenericArguments().Single() == sourceType)).SingleOrDefault(); 16:  17: if (collectionInDestinationType != null) 18: { 19: return (false); 20: } 21: } 22: } 23:  24: return (true); 25: }); 26:  27: mapper.IsManyToMany((MemberInfo member, Boolean isLikely) => 28: { 29: //a relation is many to many if it isn't one to many 30: Boolean isOneToMany = mapper.ModelInspector.IsOneToMany(member); 31: return (!isOneToMany); 32: }); 33:  34: mapper.BeforeMapManyToMany += (IModelInspector modelInspector, PropertyPath member, IManyToManyMapper collectionRelationManyToManyCustomizer) => 35: { 36: Type destinationEntityType = member.LocalMember.GetPropertyOrFieldType().GetGenericArguments().First(); 37: //set the mapping table column names from each source entity name plus the _Id sufix 38: collectionRelationManyToManyCustomizer.Column(destinationEntityType.Name + "_Id"); 39: }; 40:  41: mapper.BeforeMapSet += (IModelInspector modelInspector, PropertyPath member, ISetPropertiesMapper propertyCustomizer) => 42: { 43: if (modelInspector.IsManyToMany(member.LocalMember) == true) 44: { 45: propertyCustomizer.Key(x => x.Column(member.LocalMember.DeclaringType.Name + "_Id")); 46:  47: Type sourceType = member.LocalMember.DeclaringType; 48: Type destinationType = member.LocalMember.GetPropertyOrFieldType().GetGenericArguments().First(); 49: IEnumerable<String> names = new Type[] { sourceType, destinationType }.Select(x => x.Name).OrderBy(x => x); 50:  51: //set inverse on the relation of the alphabetically first entity name 52: propertyCustomizer.Inverse(sourceType.Name == names.First()); 53: //set mapping table name from the entity names in alphabetical order 54: propertyCustomizer.Table(String.Join("_", names)); 55: } 56: }; We have to understand how the conventions mapper thinks: For each collection of entities found, it will ask the mapper if it is a one-to-many; in our case, if the collection is a generic one that has an entity as its generic parameter, and the generic parameter type has a similar collection, then it is not a one-to-many; Next, the mapper will ask if the collection that it now knows is not a one-to-many is a many-to-many; Before a set is mapped, if it corresponds to a many-to-many, we set its mapping table. Now, this is tricky: because we have no way to maintain state, we sort the names of the two endpoint entities and we combine them with a “_”; for the first alphabetical entity, we set its relation to inverse – remember, on a many-to-many relation, only one endpoint must be marked as inverse; finally, we set the column name as the name of the entity with an “_Id” suffix; Before the many-to-many relation is processed, we set the column name as the name of the other endpoint entity with the “_Id” suffix, as we did for the set. And that’s it. With these rules, NHibernate will now happily find and configure many-to-many relations, as well as all the others. You can wrap this in a new conventions mapper class, so that it is more easily reusable: 1: public class ManyToManyConventionModelMapper : ConventionModelMapper 2: { 3: public ManyToManyConventionModelMapper() 4: { 5: base.IsOneToMany((MemberInfo member, Boolean isLikely) => 6: { 7: return (this.IsOneToMany(member, isLikely)); 8: }); 9:  10: base.IsManyToMany((MemberInfo member, Boolean isLikely) => 11: { 12: return (this.IsManyToMany(member, isLikely)); 13: }); 14:  15: base.BeforeMapManyToMany += this.BeforeMapManyToMany; 16: base.BeforeMapSet += this.BeforeMapSet; 17: } 18:  19: protected virtual Boolean IsManyToMany(MemberInfo member, Boolean isLikely) 20: { 21: //a relation is many to many if it isn't one to many 22: Boolean isOneToMany = this.ModelInspector.IsOneToMany(member); 23: return (!isOneToMany); 24: } 25:  26: protected virtual Boolean IsOneToMany(MemberInfo member, Boolean isLikely) 27: { 28: Type sourceType = member.DeclaringType; 29: Type destinationType = member.GetMemberFromDeclaringType().GetPropertyOrFieldType(); 30:  31: //check if the property is of a generic collection type 32: if ((destinationType.IsGenericCollection() == true) && (destinationType.GetGenericArguments().Length == 1)) 33: { 34: Type destinationEntityType = destinationType.GetGenericArguments().Single(); 35:  36: //check if the type of the generic collection property is an entity 37: if (this.ModelInspector.IsEntity(destinationEntityType) == true) 38: { 39: //check if there is an equivalent property on the target type that is also a generic collection and points to this entity 40: PropertyInfo collectionInDestinationType = destinationEntityType.GetProperties().Where(x => (x.PropertyType.IsGenericCollection() == true) && (x.PropertyType.GetGenericArguments().Length == 1) && (x.PropertyType.GetGenericArguments().Single() == sourceType)).SingleOrDefault(); 41:  42: if (collectionInDestinationType != null) 43: { 44: return (false); 45: } 46: } 47: } 48:  49: return (true); 50: } 51:  52: protected virtual new void BeforeMapManyToMany(IModelInspector modelInspector, PropertyPath member, IManyToManyMapper collectionRelationManyToManyCustomizer) 53: { 54: Type destinationEntityType = member.LocalMember.GetPropertyOrFieldType().GetGenericArguments().First(); 55: //set the mapping table column names from each source entity name plus the _Id sufix 56: collectionRelationManyToManyCustomizer.Column(destinationEntityType.Name + "_Id"); 57: } 58:  59: protected virtual new void BeforeMapSet(IModelInspector modelInspector, PropertyPath member, ISetPropertiesMapper propertyCustomizer) 60: { 61: if (modelInspector.IsManyToMany(member.LocalMember) == true) 62: { 63: propertyCustomizer.Key(x => x.Column(member.LocalMember.DeclaringType.Name + "_Id")); 64:  65: Type sourceType = member.LocalMember.DeclaringType; 66: Type destinationType = member.LocalMember.GetPropertyOrFieldType().GetGenericArguments().First(); 67: IEnumerable<String> names = new Type[] { sourceType, destinationType }.Select(x => x.Name).OrderBy(x => x); 68:  69: //set inverse on the relation of the alphabetically first entity name 70: propertyCustomizer.Inverse(sourceType.Name == names.First()); 71: //set mapping table name from the entity names in alphabetical order 72: propertyCustomizer.Table(String.Join("_", names)); 73: } 74: } 75: } Conclusion Of course, there is much more to mapping than this, I suggest you look at all the events and functions offered by the ModelMapper to see where you can hook for making it behave the way you want. If you need any help, just let me know!

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