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  • DNS Resolver Speed Techniques

    - by Rob Olmos
    I recently received a reply to my concerns about some DNS servers being slower than others despite all servers being anycast: In practice, most resolvers won't be impacted by the slower paths to some of the name servers in the set. Most resolvers employ various techniques to provide fast lookups, such as preferring name servers that were previously seen to be faster, sending simultaneous queries to multiple name servers, or pre-fetching queries before the TTL has expired. I was not aware that resolvers used these techniques and I was unsuccessful at searching for more info about this. Are there any names for these techniques? Which resolvers employ which of these techniques?

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  • Which version management design methodology to be used in a Dependent System nodes?

    - by actiononmail
    This is my first question so please indicate if my question is too vague and not understandable. My question is more related to High Level Design. We have a system (specifically an ATCA Chassis) configured in a Star Topology, having Master Node (MN) and other sub-ordinate nodes(SN). All nodes are connected via Ethernet and shall run on Linux OS with other proprietary applications. I have to build a recovery Framework Design so that any software entity, whether its Linux, Ramdisk or application can be rollback to previous good versions if something bad happens. Thus I think of maintaining a State Version Matrix over MN, where each State(1,2....n) represents Good Kernel, Ramdisk and application versions for each SN. It may happen that one SN version can dependent on other SN's version. Please see following diagram:- So I am in dilemma whether to use Package Management Methodology used by Debian Distributions (Like Ubuntu) or GIT repository methodology; in order to do a Rollback to previous good versions on either one SN or on all the dependent SNs. The method should also be easier for upgrading SNs along with MNs. Some of the features which I am trying to achieve:- 1) Upgrade of even single software entity is achievable without hindering others. 2) Dependency checks must be done before applying rollback or upgrade on each of the SN 3) User Prompt should be given in case dependency fails.If User still go for rollback, all the SNs should get notification to rollback there own releases (if required). 4) The binaries should be distributed on SNs accordingly so that recovery process is faster; rather fetching every time from MN. 5) Release Patches from developer for bug fixes, feature enhancement can be applied on running system. 6) Each version can be easily tracked and distinguishable. Thanks

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  • Is Cygwin the best Unix environment for Windows? [closed]

    - by nik
    Which Unix like environment do you prefer on Windows? I have found Cygwin to be very comfortable for a Windows platform (usually XP). I am wondering if there is a better alternative (not because I want to move away from Cygwin). What are the features of Cygwin that you like OR, What are features you find in alternatives that you miss in Cygwin? I am often miss binary compatibility of applications built on Cygwin. These cannot be run directly on another Windows platform. But, usually fetching a copy of cygwin1.dll suffices. A collection of other tools, many of which work directly on the Windows subsystem rather than emulating Unix, like Cygwin does: Have been referred PowerShell a lot of times for scripting on Windows Earlier, UnixUtils was suggested more often Microsoft Windows Services for Unix

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  • What strategy should be employed to access Facebook data offline?

    - by user686021
    I'm working on a project similar to Klout which provides detail about how you influence other people and who influenced you. We'll be fetching data from few social networking sites (i.e linked in, facebook, twitter etc) to analyze how users interacts with one another. For that we need to parse the data and store it in db and have to analyze it so that strength of relation of two user can be decided. We'll be accessing data offline as well to provide them with accurate results. If we consider facebook activities, we need to have access to Facebook users' news feed, wall data which includes likes,comments,shares etc. To decide how one user influence other, we'll store all the data and analyze it. I need suggestions on what steps need to be taken for great performance. We'll be using ASP.Net(C#) Web forms, SQL Server, jQuery. Main concern is parsing of data, it's storage and retrieval with least overhead. For that I've summarized few points as below : Should we switch over to document-oriented database, like MongoDB or RavenDB for the whole app or part of it even though none of team member have experience with them? Should we use SQL Server Analysis service? Is there any other library than Json.NET for parsing data? Is it advisable to use any C# library over FQL + GET Request ? I've tried to provide as much info as possible. Please share your views for the same.

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  • News Applications internal working [on hold]

    - by Vijay
    How does news applications work other than RSS Feed based applications? I know some of them take the RSS content from the source site.But sometimes I see, those applications show - Title Description Date Image video etc. Even though when I see the original site's rss, image, video is not there in rss. So how does one get that to show in there applications? Some applications even shows feeds from magazine sites, newspaper sites. How do these applications work? I am creating an application which will link to different news sites feeds categorized (like top news, technology, games, articles etc.) On the front page it will show the website names, then on selection of any news site it will get the feed from that website and show it to user. So I would like to know All the fetching of data from should be done on user selection or data should be prefetched? Detailed information I want to fetch from the original like provided in the rss data. How should I go about it?

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  • How do I block a single css file from being loaded with firefox or chrome?

    - by Tim Santeford
    I want to be able to block one css file from loading on my system. The site has multiple sheets that I do want to load but it has one hideous theme.css file that I just have to get rid of. I would prefer to use Chrome but FF is ok too. A system wide ban on the file would be ideal. I want to specify a single url that the computer becomes incapable of fetching it. I will then use stylish to create my own replacement. BTW its a SharePoint theme and it has way too many rules to have to override. Thanks

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  • How to use Twitter4j With JSF2 for Login? [on hold]

    - by subodh
    I am trying to do login with Twitter and using Twitter4j for that and wrote this code In JSF <h:commandButton id="twitterbutton" value="Sign up with Twitter" action="#{twitterLoginBean.redirectTwitterLogin}" immediate="true" styleClass="twitterbutton"/> In ManagedBean public String redirectTwitterLogin() throws ServletException, IOException, TwitterException { HttpServletRequest request = (HttpServletRequest) FacesContext .getCurrentInstance().getExternalContext().getRequest(); HttpServletResponse response = (HttpServletResponse) FacesContext .getCurrentInstance().getExternalContext().getResponse(); Twitter twitter = TwitterFactory.getSingleton(); twitter.setOAuthConsumer(apiKey, apiSecret); RequestToken requestToken = twitter.getOAuthRequestToken(); if (requestToken != null) { AccessToken accessToken = null; BufferedReader br = new BufferedReader(new InputStreamReader( System.in)); while (null == accessToken) { try { String pin = br.readLine(); accessToken = twitter .getOAuthAccessToken(requestToken, pin); } catch (TwitterException te) { System.out .println("Failed to get access token, caused by: " + te.getMessage()); System.out.println("Retry input PIN"); } } request.setAttribute(IS_AUTHENTICATED, true); if (accessToken != null) { LOGGER.debug("We have a valid oauth token! Make the facebook request"); doApiCall(twitter, request, response); return null; } } else { LOGGER.debug("We don't have auth code yet, fetching the Authorization URL..."); String authorizationUrl = requestToken.getAuthorizationURL(); LOGGER.debug("Redirecting to the Authorization URL: {}", authorizationUrl); request.setAttribute(IS_AUTHENTICATED, false); redirect(authorizationUrl, response); return null; } return null; } In above code i want first Login window of twitter will show and then again same method will call and after user will login i can show user information userId,Handel,location etc. Redirect private void redirect(String url, HttpServletResponse response) throws IOException { String urlWithSessionID = response.encodeRedirectURL(url); response.sendRedirect(urlWithSessionID); } But this code is not working Can anyone tell better Solution for this ?

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  • SFTP sending files between laptops on Ubuntu

    - by twigg
    I want to transfer files between two Ubuntu systems using SFTP. I have got it set-up and I can connect to the other laptop, ping it and see its file list using sftp> dir. I can see the files on the other system. But when I call get filename.deb it comes up saying Fetching /home/user/filename.deb to filename.deb 0% 0 0.0KB/s --:-- ETA and then drops back to the sftp command promote without transferring anything. Have I missed something?

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  • svn:externals cache and stale URLs

    - by dcaunt
    I have a subversion externals entry in a library folder which looks like this: Z https://svn/Z/trunk/library/Z Fetching external item into '/home/releases/50/library/Z' svn: OPTIONS of 'http://svn/repo/trunk/library/Z': could not connect to server (http://svn) The externals URL was the same, but over the HTTP protocol. Having changed the externals to point to the HTTPS, I can't figure out why subversion is still trying to use the old URL. Does subversion cache the externals path, and if so how can I clear this? If not, what else could be causing this? I can check out from the correct (HTTPS) URL fine from the server. NOTE: svn is an entry in the server's local hosts file, pointing to our subversion server's IP.

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  • websites resolving in browser but not resolving in CLI. Can ping IP but not domain name (unknown host)

    - by tjkoding
    Hi guys I'm currently developing using rails and for some reason bundle install is returning the following output Error Bundler::HTTPError during request to dependency API Fetching full source index from https://rubygems.org/ Could not reach https://rubygems.org/ I've discovered that pinging by domain name keeps returning an unknown host. The browser is still resolving web pages just fine and I've managed to confirm that the problem is localized (i.e. the rubygems page isn't down). I'm completely lost so any help would be much appreciated. Thanks in advance!

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  • Curl Certificate Error when Using RVM to install Ruby 1.9.2

    - by Will Dennis
    RVM is running into a certificate error when trying to download ruby 1.9.2. It looks like curl is having a certificate issue but I am not sure how to bypass it. NAy help would be great. Thanks so much, I have included the exact error info below. $ rvm install 1.9.2 Installing Ruby from source to: /Users/willdennis/.rvm/rubies/ruby-1.9.2-p180, this may take a while depending on your cpu(s)... ruby-1.9.2-p180 - #fetching ERROR: Error running 'bunzip2 '/Users/willdennis/.rvm/archives/ruby-1.9.2-p180.tar.bz2'', please read /Users/willdennis/.rvm/log/ruby-1.9.2-p180/extract.log ruby-1.9.2-p180 - #extracting ruby-1.9.2-p180 to /Users/willdennis/.rvm/src/ruby-1.9.2-p180 ruby-1.9.2-p180 - #extracted to /Users/willdennis/.rvm/src/ruby-1.9.2-p180 Fetching yaml-0.1.3.tar.gz to /Users/willdennis/.rvm/archives curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed More details here: http://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a "bundle" of Certificate Authority (CA) public keys (CA certs). The default bundle is named curl-ca-bundle.crt; you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option. ERROR: There was an error, please check /Users/willdennis/.rvm/log/ruby-1.9.2-p180/*.log. Next we'll try to fetch via http. Trying http:// URL instead. curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed More details here: http://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a "bundle" of Certificate Authority (CA) public keys (CA certs). The default bundle is named curl-ca-bundle.crt; you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option. ERROR: There was an error, please check /Users/willdennis/.rvm/log/ruby-1.9.2-p180/*.log Extracting yaml-0.1.3.tar.gz to /Users/willdennis/.rvm/src ERROR: Error running 'tar zxf /Users/willdennis/.rvm/archives/yaml-0.1.3.tar.gz -C /Users/willdennis/.rvm/src --no-same-owner', please read /Users/willdennis/.rvm/log/ruby-1.9.2-p180/yaml/extract.log /Users/willdennis/.rvm/scripts/functions/packages: line 55: cd: /Users/willdennis/.rvm/src/yaml-0.1.3: No such file or directory Configuring yaml in /Users/willdennis/.rvm/src/yaml-0.1.3. ERROR: Error running ' ./configure --prefix="/Users/willdennis/.rvm/usr" ', please read /Users/willdennis/.rvm/log/ruby-1.9.2-p180/yaml/configure.log Compiling yaml in /Users/willdennis/.rvm/src/yaml-0.1.3. ERROR: Error running '/usr/bin/make ', please read /Users/willdennis/.rvm/log/ruby-1.9.2-p180/yaml/make.log Installing yaml to /Users/willdennis/.rvm/usr ERROR: Error running '/usr/bin/make install', please read /Users/willdennis/.rvm/log/ruby-1.9.2-p180/yaml/make.install.log ruby-1.9.2-p180 - #configuring ERROR: Error running ' ./configure --prefix=/Users/willdennis/.rvm/rubies/ruby-1.9.2-p180 --enable-shared --disable-install-doc --with-libyaml-dir=/Users/willdennis/.rvm/usr ', please read /Users/willdennis/.rvm/log/ruby-1.9.2-p180/configure.log ERROR: There has been an error while running configure. Halting the installation. Will

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  • Two UIViews, one UIViewController (in one UINavigationController)

    - by jdandrea
    Given an iPhone app with a UITableViewController pushed onto a UINavigationController, I would like to add a right bar button item to toggle between the table view and an "alternate" view of the same data. Let's also say that this other view uses the same data but is not a UITableView. Now, I know variations on this question already exist on Stack Overflow. However, in this case, that alternate view would not be pushed onto the UINavigationController. It would be visually akin to flipping the current UIViewController's table view over and revealing the other view, then being able to flip back. In other words, it's intended to take up a single spot in the UINavigationController hierarchy. Moreover, whatever selection you ultimately make from within either view will push a common UIViewController onto the UINavigationController stack. Still more info: We don't want to use a separate UINavigationController just to handle this pair of views, and we don't want to split these apart via a UITabBarController either. Visually and contextually, the UX is meant to show two sides of the same coin. It's just that those two sides happen to involve their own View Controllers in normal practice. Now … it turns out I have already gone and quickly set this up to see how it might work! However, upon stepping back to examine it, I get the distinct impression that I went about it in a rather non-MVC way, which of course concerns me a bit. Here's what I did at a high level. Right now, I have a UIViewController (not a UITableViewController) that handles all commonalities between the two views, such as fetching the raw data. I also have two NIBs, one for each view, and two UIView objects to go along with them. (One of them is a UITableView, which is a kind of UIView.) I switch between the views using animation (easy enough). Also, in an effort to keep things encapsulated, the now-split-apart UITableView (not the UIViewController!) acts as its own delegate and data source, fetching data from the VC. The VC is set up as a weak, non-retained object in the table view. In parallel, the alternate view gets at the raw data from the VC in the exact same way. So, there are a few things that smell funny here. The weak linking from child to parent, while polite, seems like it might be wrong. Making a UITableView the table's data source and delegate also seems odd to me, thinking that a view controller is where you want to put that per Apple's MVC diagrams. As it stands now, it would appear as if the view knows about the model, which isn't good. Loading up both views in advance also seems odd, because lazy loading is no longer in effect. Losing the benefits of a UITableViewController (like auto-scrolling to cells with text fields) is also a bit frustrating, and I'd rather not reinvent the wheel to work around that as well. Given all of the above, and given we want that "flip effect" in the context of a single spot on a single UINavigationController, and given that both views are two sides of the same coin, is there a better, more obvious way to design this that I'm just happening to miss completely? Clues appreciated!

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  • Issue in Creating an Insert Query See Description Below...

    - by Parth
    I am creating a Insert Query using PHP.. By fetching the data from a Audit table and iterating the values of it in loops.. table from which I am fetching the value has the snapshot below: The Code I am using to create is given below: mysql_select_db('information_schema'); $select = mysql_query("SELECT TABLE_NAME FROM TABLES WHERE TABLE_SCHEMA = 'pranav_test'"); $selectclumn = mysql_query("SELECT * FROM COLUMNS WHERE TABLE_SCHEMA = 'pranav_test'"); mysql_select_db('pranav_test'); $seletaudit = mysql_query("SELECT * FROM jos_audittrail WHERE live = 0"); $tables = array(); $i = 0; while($row = mysql_fetch_array($select)) { $tables[$i++] =$row['TABLE_NAME']; } while($row2 = mysql_fetch_array($seletaudit)) { $audit[] =$row2; } foreach($audit as $val) { if($val['operation'] == "INSERT") { if(in_array($val['table_name'],$tables)) { $insert = "INSERT INTO '".$val['table_name']."' ("; $selfld = mysql_query("SELECT field FROM jos_audittrail WHERE table_name = '".$val['table_name']."' AND operation = 'INSERT' AND trackid = '".$val['trackid']."'"); while($row3 = mysql_fetch_array($selfld)) { $values[] = $row3; } foreach($values as $field) { $insert .= "'".$field['field']."', "; } $insert .= "]"; $insert = str_replace(", ]",")",$insert); $insert .= " values ("; $selval = mysql_query("SELECT newvalue FROM jos_audittrail WHERE table_name = '".$val['table_name']."' AND operation = 'INSERT' AND trackid = '".$val['trackid']."' AND live = 0"); while($row4 = mysql_fetch_array($selval)) { $value[] = $row4; } /*echo "<pre>"; print_r($value);exit;*/ foreach($value as $data) { $insert .= "'".$data['newvalue']."', "; } $insert .= "["; $insert = str_replace(", [",")",$insert); } } } When I Echo the $insert out of the most outer for loop (for auditrail) The values get printed as many times as the records are found for the outer for loop..i.e 'orderby= show_noauth= show_title= link_titles= show_intro= show_section= link_section= show_category= link_category= show_author= show_create_date= show_modify_date= show_item_navigation= show_readmore= show_vote= show_icons= show_pdf_icon= show_print_icon= show_email_icon= show_hits= feed_summary= page_title= show_page_title=1 pageclass_sfx= menu_image=-1 secure=0 ', '0000-00-00 00:00:00', '13', '20', '1', '152', 'accmenu', 'IPL', 'ipl', 'index.php?option=com_content&view=archive', 'component' gets repeated , i.e. INSERT INTO 'jos_menu' ('params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type', 'params', 'checked_out_time', 'ordering', 'componentid', 'published', 'id', 'menutype', 'name', 'alias', 'link', 'type') values ('orderby= show_noauth= show_title= link_titles= show_intro= show_section= link_section= show_category= link_category= show_author= show_create_date= show_modify_date= show_item_navigation= show_readmore= show_vote= show_icons= show_pdf_icon= show_print_icon= show_email_icon= show_hits= feed_summary= page_title= show_page_title=1 pageclass_sfx= menu_image=-1 secure=0 ', '0000-00-00 00:00:00', '13', '20', '1', '152', 'accmenu', 'IPL', 'ipl', 'index.php?option=com_content&view=archive', 'component', 'orderby= show_noauth= show_title= link_titles= show_intro= show_section= link_section= show_category= link_category= show_author= show_create_date= show_modify_date= show_item_navigation= show_readmore= show_vote= show_icons= show_pdf_icon= show_print_icon= show_email_icon= show_hits= feed_summary= page_title= show_page_title=1 pageclass_sfx= menu_image=-1 secure=0 ', '0000-00-00 00:00:00', '13', '20', '1', '152', 'accmenu', 'IPL', 'ipl', 'index.php?option=com_content&view=archive', 'component', 'orderby= show_noauth= .. .. .. .. and so on What I want is I should get these Values for once, I know there is mistake using the outer Forloop, but I m not getting the idea of rectifying it.. Please help... please poke me for more clarification...

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  • Connecting Android device to multiple Bluetooth serial embedded peers

    - by TacB0sS
    I'm trying to find a solution for this setup: I have a single Android device, which I would like to connect to multiple serial embedded devices... And here is the thing, using the "Normal" way to retrieve the Bluetooth socket, doesn't work on all devices, and while it does, I can connect to multiple devices, and send and receive data to and from multiple devices. public final synchronized void connect() throws ConnectionException { if (socket != null) throw new IllegalStateException("Error socket is not null!!"); connecting = true; lastException = null; lastPacket = null; lastHeartBeatReceivedAt = 0; log.setLength(0); try { socket = fetchBT_Socket_Normal(); connectToSocket(socket); listenForIncomingSPP_Packets(); connecting = false; return; } catch (Exception e) { socket = null; logError(e); } try { socket = fetchBT_Socket_Workaround(); connectToSocket(socket); listenForIncomingSPP_Packets(); connecting = false; return; } catch (Exception e) { socket = null; logError(e); } connecting = false; if (socket == null) throw new ConnectionException("Error creating RFcomm socket for" + this); } private BluetoothSocket fetchBT_Socket_Normal() throws Exception { /* The getType() is a hex 0xXXXX value agreed between peers --- this is the key (in my case) to multiple connections in the "Normal" way */ String uuid = getType() + "1101-0000-1000-8000-00805F9B34FB"; try { logDebug("Fetching BT RFcomm Socket standard for UUID: " + uuid + "..."); socket = btDevice.createRfcommSocketToServiceRecord(UUID.fromString(uuid)); return socket; } catch (Exception e) { logError(e); throw e; } } private BluetoothSocket fetchBT_Socket_Workaround() throws Exception { Method m; int connectionIndex = 1; try { logDebug("Fetching BT RFcomm Socket workaround index " + connectionIndex + "..."); m = btDevice.getClass().getMethod("createRfcommSocket", new Class[]{int.class}); socket = (BluetoothSocket) m.invoke(btDevice, connectionIndex); return socket; } catch (Exception e1) { logError(e1); throw e1; } } private void connectToSocket(BluetoothSocket socket) throws ConnectionException { try { socket.connect(); } catch (IOException e) { try { socket.close(); } catch (IOException e1) { logError("Error while closing socket", e1); } finally { socket = null; } throw new ConnectionException("Error connecting to socket with" + this, e); } } And here is the thing, while on phones which the "Normal" way doesn't work, the "Workaround" way provides a solution for a single connection. I've searched far and wide, but came up with zip. The problem with the workaround is mentioned in the last link, both connection uses the same port, which in my case, causes a block, where both of the embedded devices can actually send data, that is not been processed on the Android, while both embedded devices can receive data sent from the Android. Did anyone handle this before? There is a bit more reference here, UPDATE: Following this (that I posted earlier) I wanted to give the mPort a chance, and perhaps to see other port indices, and how other devices manage them, and I found out the the fields in the BluetoothSocket object are different while it is the same class FQN in both cases: Detils from an HTC Vivid 2.3.4, uses the "workaround" Technic: The Socket class type is: [android.bluetooth.BluetoothSocket] mSocket BluetoothSocket (id=830008629928) EADDRINUSE 98 EBADFD 77 MAX_RFCOMM_CHANNEL 30 TAG "BluetoothSocket" (id=830002722432) TYPE_L2CAP 3 TYPE_RFCOMM 1 TYPE_SCO 2 mAddress "64:9C:8E:DC:56:9A" (id=830008516328) mAuth true mClosed false mClosing AtomicBoolean (id=830007851600) mDevice BluetoothDevice (id=830007854256) mEncrypt true mInputStream BluetoothInputStream (id=830008688856) mLock ReentrantReadWriteLock (id=830008629992) mOutputStream BluetoothOutputStream (id=830008430536) **mPort 1** mSdp null mSocketData 3923880 mType 1 Detils from an LG-P925 2.2.2, uses the "normal" Technic: The Socket class type is: [android.bluetooth.BluetoothSocket] mSocket BluetoothSocket (id=830105532880) EADDRINUSE 98 EBADFD 77 MAX_RFCOMM_CHANNEL 30 TAG "BluetoothSocket" (id=830002668088) TYPE_L2CAP 3 TYPE_RFCOMM 1 TYPE_SCO 2 mAccepted false mAddress "64:9C:8E:B9:3F:77" (id=830105544600) mAuth true mClosed false mConnected ConditionVariable (id=830105533144) mDevice BluetoothDevice (id=830105349488) mEncrypt true mInputStream BluetoothInputStream (id=830105532952) mLock ReentrantReadWriteLock (id=830105532984) mOutputStream BluetoothOutputStream (id=830105532968) mPortName "" (id=830002606256) mSocketData 0 mSppPort BluetoothSppPort (id=830105533160) mType 1 mUuid ParcelUuid (id=830105714176) Anyone have some insight...

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  • Efficient representation of Hierarchies in Hibernate.

    - by Alison G
    I'm having some trouble representing an object hierarchy in Hibernate. I've searched around, and haven't managed to find any examples doing this or similar - you have my apologies if this is a common question. I have two types which I'd like to persist using Hibernate: Groups and Items. * Groups are identified uniquely by a combination of their name and their parent. * The groups are arranged in a number of trees, such that every Group has zero or one parent Group. * Each Item can be a member of zero or more Groups. Ideally, I'd like a bi-directional relationship allowing me to get: * all Groups that an Item is a member of * all Items that are a member of a particular Group or its descendants. I also need to be able to traverse the Group tree from the top in order to display it on the UI. The basic object structure would ideally look like this: class Group { ... /** @return all items in this group and its descendants */ Set<Item> getAllItems() { ... } /** @return all direct children of this group */ Set<Group> getChildren() { ... } ... } class Item { ... /** @return all groups that this Item is a direct member of */ Set<Group> getGroups() { ... } ... } Originally, I had just made a simple bi-directional many-to-many relationship between Items and Groups, such that fetching all items in a group hierarchy required recursion down the tree, and fetching groups for an Item was a simple getter, i.e.: class Group { ... private Set<Item> items; private Set<Group> children; ... /** @return all items in this group and its descendants */ Set<Item> getAllItems() { Set<Item> allItems = new HashSet<Item>(); allItems.addAll(this.items); for(Group child : this.getChildren()) { allItems.addAll(child.getAllItems()); } return allItems; } /** @return all direct children of this group */ Set<Group> getChildren() { return this.children; } ... } class Item { ... private Set<Group> groups; /** @return all groups that this Item is a direct member of */ Set<Group> getGroups() { return this.groups; } ... } However, this resulted in multiple database requests to fetch the Items in a Group with many descendants, or for retrieving the entire Group tree to display in the UI. This seems very inefficient, especially with deeper, larger group trees. Is there a better or standard way of representing this relationship in Hibernate? Am I doing anything obviously wrong or stupid? My only other thought so far was this: Replace the group's id, parent and name fields with a unique "path" String which specifies the whole ancestry of a group, e.g.: /rootGroup /rootGroup/aChild /rootGroup/aChild/aGrandChild The join table between Groups and Items would then contain group_path and item_id. This immediately solves the two issues I was suffering previously: 1. The entire group hierarchy can be fetched from the database in a single query and reconstructed in-memory. 2. To retrieve all Items in a group or its descendants, we can select from group_item where group_path='N' or group_path like 'N/%' However, this seems to defeat the point of using Hibernate. All thoughts welcome!

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  • Edit of self referencing HABTM in cakephp works, sometimes

    - by Odegard
    I'm using a self referencing HABTM model with Participants. You sign up for an event and when you log in to your reservation/profile you see a list of other participants and you can choose to add yourself and others into various groups; share hotel room, share transportation from airport etc. What I've managed so far: 1) In my profile I see the list of all other participants with checkboxes. Great so far. 2) Adding another participant works fine. Next time I edit, the participant I added is shown as checked. 3) Removing another participant works fine too as long as you still have checked participants before you submit! Again, with words: There are 3 participants. I'm logged in as one of them, and I see the 2 other people on the participants list. I choose to check both of them. This works fine (always). Later I choose to remove one of them (by unchecking the checkbox and hitting submit). This also works fine (always). If I want to remove the last checkbox... nothing is updated (always!). What's curious is that I can add and remove any odd combination of participants and it will always work UNLESS I choose to remove every participants in one go (removing a one and only participant is a special case of "remove all checked participants"). As far as I know, HABTMs work by first deleting all relations, then re-saving them. I can see that in my tables when I remove, add, remove, add the same participant over and over again - the id on the HABTM table is always increasing. When I deselect all participants at once, however, the relations are not updated. The ids stay the same, so it's like the save never happened. This behaviour is so specific and peculiar, I have a feeling I'm missing something obvious here. Anyway, here's the relevant code: Model class Participant extends AppModel { var $hasAndBelongsToMany = array( 'buddy' = array( 'className' = 'Participant', 'joinTable' = 'participants_participants', 'foreignKey' = 'participant_id', 'associationForeignKey' = 'buddy_id', 'unique' = true, ) ); Controller function edit($id = null) { if (!$id && empty($this-data)) { $this-Session-setFlash(__('Invalid Participant', true)); $this-redirect(array('action'='index')); } if (!empty($this-data)) { if ($this-Participant-saveAll($this-data)) { $this-Session-setFlash(__('The Participant has been saved', true)); $this-redirect(array('action'='index')); } else { $this-Session-setFlash(__('The Participant could not be saved. Please, try again.', true)); } } if (empty($this-data)) { $this-data = $this-Participant-read(null, $id); } // Fetching all participants except yourself $allParticipants = $this-Participant-find('list', array('conditions' = array('participant.id ' = $id))); // Fetching every participant that has added you to their list $allBuddies = $this-Participant-ParticipantsParticipant-find('list', array( 'conditions' = array('buddy_id' = $id), 'fields' = 'ParticipantsParticipant.participant_id', 'order' = 'ParticipantsParticipant.participant_id ASC' )); $this-set(compact('allParticipants','allBuddies')); } View echo $form-create('Participant'); echo $associations-habtmCheckBoxes($allParticipants, $this-data['buddy'], 'buddy', 'div', '\'border: 1px solid #000;\'', '\'border: 1px solid #000;\''); echo $form-end('Submit'); I'm using a slightly modified helper, habtmCheckBoxes, found here: http://cakeforge.org/snippet/detail.php?type=snippet&id=190 It works like this: function habtmCheckBoxes($rows=array(), $selectedArr=array(), $modelName, $wrapTag='p', $checkedDiv, $uncheckedDiv) {}

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  • get me the latest Change from Select Query in below given condition

    - by OM The Eternity
    I have a Table structure as id, trackid, table_name, operation, oldvalue, newvalue, field, changedonetime Now if I have 3 rows for the same "trackid" same "field", then how can i select the latest out of the three? i.e. for e.g.: id = 100 trackid = 152 table_name = jos_menu operation= UPDATE oldvalue = IPL newvalue = IPLcccc field = name live = 0 changedonetime = 2010-04-30 17:54:39 and id = 101 trackid = 152 table_name = jos_menu operation= UPDATE oldvalue = IPLcccc newvalue = IPL2222 field = name live = 0 changedonetime = 2010-04-30 18:54:39 As u can see above the secind entry is the latest change, Now what query I should use to get the only one and Latest row out of many such rows... $distupdqry = "select DISTINCT trackid,table_name from jos_audittrail where live = 0 AND operation = 'UPDATE'"; $disupdsel = mysql_query($distupdqry); $t_ids = array(); $t_table = array(); while($row3 = mysql_fetch_array($disupdsel)) { $t_ids[] = $row3['trackid']; $t_table[] = $row3['table_name']; //$t_table[] = $row3['table_name']; } //echo "<pre>";print_r($t_table);echo "<pre>"; //exit; for($n=0;$n<count($t_ids);$n++) { $qupd = "SELECT * FROM jos_audittrail WHERE operation = 'UPDATE' AND trackid=$t_ids[$n] order by changedone DESC "; $seletupdaudit = mysql_query($qupd); $row4 = array(); $audit3 = array(); while($row4 = mysql_fetch_array($seletupdaudit)) { $audit3[] = $row4; } $updatefield = ''; for($j=0;$j<count($audit3);$j++) { if($j == 0) { if($audit3[$j]['operation'] == "UPDATE") { //$insqry .= $audit2[$i]['operation']." "; //echo "<br>"; $updatefield .= "UPDATE `".$audit3[$j]['table_name']."` SET "; } } if($audit3[$j]['operation'] == "UPDATE") { $updatefield .= $audit3[$j]['field']." = '".$audit3[$j]['newvalue']."', "; } } /*echo "<pre>"; print_r($audit3); exit;*/ $primarykey = "SHOW INDEXES FROM `".$t_table[$n]."` WHERE Key_name = 'PRIMARY'"; $prime = mysql_query($primarykey); $pkey = mysql_fetch_array($prime); $updatefield .= "]"; echo $updatefield = str_replace(", ]"," WHERE ".$pkey['Column_name']." = '".$t_ids[$n]."'",$updatefield); } In the above code I am fetching ou the distinct IDs in which update operation has been done, and then accordingly query is fired to get all the changes done on different fields of the selected distinct ids... Here I am creating the Update query by fetching the records from the initially described table which is here mentioned as audittrail table... Therefore I need the last made change in the field so that only latest change can be selected in the select queries i have used... please go through the code.. and see how can i make the required change i need finally..

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  • Why didn't 12.04 install?

    - by Josephisscrewed
    Ok, so I've installed Ubuntu many times on my computer.. Normally on the same partition, and WIndows would always delete Ubuntu(I don't know how.. it just happens) if i go away from keyboard during boot and it chooses Windows automatically because I took to long. So i tried to reinstall again, but after the fifth time it wouldn't let me, and told me to check "wubi-12.04-rev266.log". It took a while to find, but when i found it, I had no idea what any of it meant, as I'm no programmer.I first tried this the day Precise Pangolin came out. SO skip ahead 2.5 months, when I finally found this file, and i then got the idea of making a new partition to install Ubuntu on, but I used wubi, like I always did. It didn't look like it would f anything up, so I did it. it went through all the downloads, extracting, etc. Which took about 40 minutes total, then ended with an error message saying to check "wubi-12.04-rev266.log". i did. Here's what it says: 07-10 23:33 INFO root: === wubi 12.04 rev266 === 07-10 23:33 DEBUG root: Logfile is c:\users\joseph\appdata\local\temp\wubi-12.04-rev266.log 07-10 23:33 DEBUG root: sys.argv = ['main.pyo', '--exefile="C:\\Users\\Joseph\\Downloads\\wubi.exe"'] 07-10 23:33 DEBUG CommonBackend: data_dir=C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\data 07-10 23:33 DEBUG WindowsBackend: 7z=C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\bin\7z.exe 07-10 23:33 DEBUG WindowsBackend: startup_folder=C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup 07-10 23:33 DEBUG CommonBackend: Fetching basic info... 07-10 23:33 DEBUG CommonBackend: original_exe=C:\Users\Joseph\Downloads\wubi.exe 07-10 23:33 DEBUG CommonBackend: platform=win32 07-10 23:33 DEBUG CommonBackend: osname=nt 07-10 23:33 DEBUG CommonBackend: language=en_US 07-10 23:33 DEBUG CommonBackend: encoding=cp1252 07-10 23:33 DEBUG WindowsBackend: arch=amd64 07-10 23:33 DEBUG CommonBackend: Parsing isolist=C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\data\isolist.ini 07-10 23:33 DEBUG CommonBackend: Adding distro Xubuntu-i386 07-10 23:33 DEBUG CommonBackend: Adding distro Edubuntu-i386 07-10 23:33 DEBUG CommonBackend: Adding distro Xubuntu-amd64 07-10 23:33 DEBUG CommonBackend: Adding distro Kubuntu-amd64 07-10 23:33 DEBUG CommonBackend: Adding distro Mythbuntu-i386 07-10 23:33 DEBUG CommonBackend: Adding distro Edubuntu-amd64 07-10 23:33 DEBUG CommonBackend: Adding distro Ubuntu-amd64 07-10 23:33 DEBUG CommonBackend: Adding distro Lubuntu-i386 07-10 23:33 DEBUG CommonBackend: Adding distro Ubuntu-i386 07-10 23:33 DEBUG CommonBackend: Adding distro Mythbuntu-amd64 07-10 23:33 DEBUG CommonBackend: Adding distro Kubuntu-i386 07-10 23:33 DEBUG CommonBackend: Adding distro Lubuntu-amd64 07-10 23:33 DEBUG WindowsBackend: Fetching host info... 07-10 23:33 DEBUG WindowsBackend: registry_key=Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi 07-10 23:33 DEBUG WindowsBackend: windows version=vista 07-10 23:33 DEBUG WindowsBackend: windows_version2=Windows 7 Home Premium 07-10 23:33 DEBUG WindowsBackend: windows_sp=None 07-10 23:33 DEBUG WindowsBackend: windows_build=7600 07-10 23:33 DEBUG WindowsBackend: gmt=-8 07-10 23:33 DEBUG WindowsBackend: country=US 07-10 23:33 DEBUG WindowsBackend: timezone=America/Los_Angeles 07-10 23:33 DEBUG WindowsBackend: windows_username=Joseph 07-10 23:33 DEBUG WindowsBackend: user_full_name=Joseph 07-10 23:33 DEBUG WindowsBackend: user_directory=C:\Users\Joseph 07-10 23:33 DEBUG WindowsBackend: windows_language_code=1033 07-10 23:33 DEBUG WindowsBackend: windows_language=English 07-10 23:33 DEBUG WindowsBackend: processor_name=Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz 07-10 23:33 DEBUG WindowsBackend: bootloader=vista 07-10 23:33 DEBUG WindowsBackend: system_drive=Drive(C: hd 78696.8203125 mb free ntfs) 07-10 23:33 DEBUG WindowsBackend: drive=Drive(C: hd 78696.8203125 mb free ntfs) 07-10 23:33 DEBUG WindowsBackend: drive=Drive(D: hd 4303.48046875 mb free ntfs) 07-10 23:33 DEBUG WindowsBackend: drive=Drive(E: cd 0.0 mb free udf) 07-10 23:33 DEBUG WindowsBackend: drive=Drive(U: hd 79907.8320313 mb free ntfs) 07-10 23:33 DEBUG WindowsBackend: uninstaller_path=None 07-10 23:33 DEBUG WindowsBackend: previous_target_dir=None 07-10 23:33 DEBUG WindowsBackend: previous_distro_name=None 07-10 23:33 DEBUG WindowsBackend: keyboard_id=67699721 07-10 23:33 DEBUG WindowsBackend: keyboard_layout=us 07-10 23:33 DEBUG WindowsBackend: keyboard_variant= 07-10 23:33 DEBUG CommonBackend: python locale=('en_US', 'cp1252') 07-10 23:33 DEBUG CommonBackend: locale=en_US.UTF-8 07-10 23:33 DEBUG WindowsBackend: total_memory_mb=3893.859375 07-10 23:33 DEBUG CommonBackend: Searching ISOs on USB devices 07-10 23:33 DEBUG CommonBackend: Searching for local CDs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether D:\ is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether E:\ is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Ubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Kubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Xubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Mythbuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Edubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 DEBUG Distro: checking whether U:\ is a valid Lubuntu CD 07-10 23:33 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:33 INFO root: Running the installer... 07-10 23:33 DEBUG WindowsFrontend: __init__... 07-10 23:33 DEBUG WindowsFrontend: on_init... 07-10 23:33 INFO WinuiPage: appname=wubi, localedir=C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\translations, languages=['en_US', 'en'] 07-10 23:33 INFO WinuiPage: appname=wubi, localedir=C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\translations, languages=['en_US', 'en'] 07-10 23:35 DEBUG WinuiInstallationPage: target_drive=U:, installation_size=30000MB, distro_name=Ubuntu, language=en_US, locale=en_US.UTF-8, username=joseph 07-10 23:35 INFO root: Received settings 07-10 23:35 DEBUG CommonBackend: Searching for local CD 07-10 23:35 DEBUG Distro: checking whether C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp is a valid Ubuntu CD 07-10 23:35 DEBUG Distro: does not contain C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\casper\filesystem.squashfs 07-10 23:35 DEBUG Distro: checking whether D:\ is a valid Ubuntu CD 07-10 23:35 DEBUG Distro: does not contain D:\casper\filesystem.squashfs 07-10 23:35 DEBUG Distro: checking whether E:\ is a valid Ubuntu CD 07-10 23:35 DEBUG Distro: does not contain E:\casper\filesystem.squashfs 07-10 23:35 DEBUG Distro: checking whether U:\ is a valid Ubuntu CD 07-10 23:35 DEBUG Distro: does not contain U:\casper\filesystem.squashfs 07-10 23:35 DEBUG CommonBackend: Searching for local ISO 07-10 23:35 INFO WinuiPage: appname=wubi, localedir=C:\Users\Joseph\AppData\Local\Temp\pylA05E.tmp\translations, languages=['en_US', 'en'] 07-10 23:35 DEBUG TaskList: # Running tasklist... 07-10 23:35 DEBUG TaskList: ## Running select_target_dir... 07-10 23:35 INFO WindowsBackend: Installing into U:\ubuntu 07-10 23:35 DEBUG TaskList: ## Finished select_target_dir 07-10 23:35 DEBUG TaskList: ## Running create_dir_structure... 07-10 23:35 DEBUG CommonBackend: Creating dir U:\ubuntu 07-10 23:35 DEBUG CommonBackend: Creating dir U:\ubuntu\disks 07-10 23:35 DEBUG CommonBackend: Creating dir U:\ubuntu\install 07-10 23:35 DEBUG CommonBackend: Creating dir U:\ubuntu\install\boot 07-10 23:35 DEBUG CommonBackend: Creating dir U:\ubuntu\disks\boot 07-10 23:35 DEBUG CommonBackend: Creating dir U:\ubuntu\disks\boot\grub 07-10 23:35 DEBUG CommonBackend: Creating dir U:\ubuntu\install\boot\grub 07-10 23:35 DEBUG TaskList: ## Finished create_dir_structure 07-10 23:35 DEBUG TaskList: ## Running create_uninstaller... 07-10 23:35 DEBUG WindowsBackend: Copying uninstaller C:\Users\Joseph\Downloads\wubi.exe -> U:\ubuntu\uninstall-wubi.exe 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi UninstallString U:\ubuntu\uninstall-wubi.exe 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi InstallationDir U:\ubuntu 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayName Ubuntu 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayIcon U:\ubuntu\Ubuntu.ico 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi DisplayVersion 12.04-rev266 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi Publisher Ubuntu 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi URLInfoAbout http://www.ubuntu.com 07-10 23:35 DEBUG registry: Setting registry key -2147483646 Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi HelpLink http://www.ubuntu.com/support 07-10 23:35 DEBUG TaskList: ## Finished create_uninstaller 07-10 23:35 DEBUG TaskList: ## Running create_preseed_diskimage... 07-10 23:35 DEBUG TaskList: ## Finished create_preseed_diskimage 07-10 23:35 DEBUG TaskList: ## Running get_diskimage... 07-10 23:35 DEBUG TaskList: New task download 07-10 23:35 DEBUG TaskList: ### Running download... 07-10 23:35 DEBUG downloader: downloading http://releases.ubuntu.com/12.04/ubuntu-12.04-wubi-amd64.tar.xz > U:\ubuntu\disks\ubuntu-12.04-wubi-amd64.tar.xz 07-10 23:35 DEBUG downloader: Download start filename=U:\ubuntu\disks\ubuntu-12.04-wubi-amd64.tar.xz, url=http://releases.ubuntu.com/12.04/ubuntu-12.04-wubi-amd64.tar.xz, basename=ubuntu-12.04-wubi-amd64.tar.xz, length=512730488, text=None 07-11 00:00 DEBUG TaskList: ### Finished download 07-11 00:00 DEBUG downloader: download finished (read 512730488 bytes) 07-11 00:00 DEBUG TaskList: ## Finished get_diskimage 07-11 00:00 DEBUG TaskList: ## Running extract_diskimage... 07-11 00:03 DEBUG TaskList: ## Finished extract_diskimage 07-11 00:03 DEBUG TaskList: ## Running choose_disk_sizes... 07-11 00:03 DEBUG WindowsBackend: total size=30000 root=29744 swap=256 home=0 usr=0 07-11 00:03 DEBUG TaskList: ## Finished choose_disk_sizes 07-11 00:03 DEBUG TaskList: ## Running expand_diskimage... 07-11 00:05 DEBUG TaskList: ## Finished expand_diskimage 07-11 00:05 DEBUG TaskList: ## Running create_swap_diskimage... 07-11 00:05 DEBUG TaskList: ## Finished create_swap_diskimage 07-11 00:05 DEBUG TaskList: ## Running modify_bootloader... 07-11 00:05 DEBUG TaskList: New task modify_bcd 07-11 00:05 DEBUG TaskList: ### Running modify_bcd... 07-11 00:05 DEBUG WindowsBackend: modify_bcd Drive(C: hd 78696.8203125 mb free ntfs) 07-11 00:05 ERROR TaskList: Error executing command >>command=C:\Windows\sysnative\bcdedit.exe /set {970e3d1b-e019-11df-a016-81045c79c1f9} device partition=U: >>retval=1 >>stderr=An error has occurred setting the element data. The request is not supported. >>stdout= Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\win32\backend.py", line 697, in modify_bcd File "\lib\wubi\backends\common\utils.py", line 66, in run_command Exception: Error executing command >>command=C:\Windows\sysnative\bcdedit.exe /set {970e3d1b-e019-11df-a016-81045c79c1f9} device partition=U: >>retval=1 >>stderr=An error has occurred setting the element data. The request is not supported. >>stdout= 07-11 00:05 DEBUG TaskList: # Cancelling tasklist 07-11 00:05 DEBUG TaskList: New task modify_bcd 07-11 00:05 ERROR root: Error executing command >>command=C:\Windows\sysnative\bcdedit.exe /set {970e3d1b-e019-11df-a016-81045c79c1f9} device partition=U: >>retval=1 >>stderr=An error has occurred setting the element data. The request is not supported. >>stdout= Traceback (most recent call last): File "\lib\wubi\application.py", line 58, in run File "\lib\wubi\application.py", line 132, in select_task File "\lib\wubi\application.py", line 158, in run_installer File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\win32\backend.py", line 697, in modify_bcd File "\lib\wubi\backends\common\utils.py", line 66, in run_command Exception: Error executing command >>command=C:\Windows\sysnative\bcdedit.exe /set {970e3d1b-e019-11df-a016-81045c79c1f9} device partition=U: >>retval=1 >>stderr=An error has occurred setting the element data. The request is not supported. >>stdout= 07-11 00:05 DEBUG TaskList: New task modify_bcd 07-11 00:05 DEBUG TaskList: ## Finished modify_bootloader 07-11 00:05 DEBUG TaskList: # Finished tasklist What have I done wrong? What can I do? If I turn off my laptop, will I actually be able to turn it back on? If you want me to post the log from the first day it happened, i'd be glad to in the comments, in the main body it made it over 30000 characters.

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  • Asynchronous Streaming in ASP.NET WebApi

    - by andresv
     Hi everyone, if you use the cool MVC4 WebApi you might encounter yourself in a common situation where you need to return a rather large amount of data (most probably from a database) and you want to accomplish two things: Use streaming so the client fetch the data as needed, and that directly correlates to more fetching in the server side (from our database, for example) without consuming large amounts of memory. Leverage the new MVC4 WebApi and .NET 4.5 async/await asynchronous execution model to free ASP.NET Threadpool threads (if possible).  So, #1 and #2 are not directly related to each other and we could implement our code fulfilling one or the other, or both. The main point about #1 is that we want our method to immediately return to the caller a stream, and that client side stream be represented by a server side stream that gets written (and its related database fetch) only when needed. In this case we would need some form of "state machine" that keeps running in the server and "knows" what is the next thing to fetch into the output stream when the client ask for more content. This technique is generally called a "continuation" and is nothing new in .NET, in fact using an IEnumerable<> interface and the "yield return" keyword does exactly that, so our first impulse might be to write our WebApi method more or less like this:           public IEnumerable<Metadata> Get([FromUri] int accountId)         {             // Execute the command and get a reader             using (var reader = GetMetadataListReader(accountId))             {                 // Read rows asynchronously, put data into buffer and write asynchronously                 while (reader.Read())                 {                     yield return MapRecord(reader);                 }             }         }   While the above method works, unfortunately it doesn't accomplish our objective of returning immediately to the caller, and that's because the MVC WebApi infrastructure doesn't yet recognize our intentions and when it finds an IEnumerable return value, enumerates it before returning to the client its values. To prove my point, I can code a test method that calls this method, for example:        [TestMethod]         public void StreamedDownload()         {             var baseUrl = @"http://localhost:57771/api/metadata/1";             var client = new HttpClient();             var sw = Stopwatch.StartNew();             var stream = client.GetStreamAsync(baseUrl).Result;             sw.Stop();             Debug.WriteLine("Elapsed time Call: {0}ms", sw.ElapsedMilliseconds); } So, I would expect the line "var stream = client.GetStreamAsync(baseUrl).Result" returns immediately without server-side fetching of all data in the database reader, and this didn't happened. To make the behavior more evident, you could insert a wait time (like Thread.Sleep(1000);) inside the "while" loop, and you will see that the client call (GetStreamAsync) is not going to return control after n seconds (being n == number of reader records being fetched).Ok, we know this doesn't work, and the question would be: is there a way to do it?Fortunately, YES!  and is not very difficult although a little more convoluted than our simple IEnumerable return value. Maybe in the future this scenario will be automatically detected and supported in MVC/WebApi.The solution to our needs is to use a very handy class named PushStreamContent and then our method signature needs to change to accommodate this, returning an HttpResponseMessage instead of our previously used IEnumerable<>. The final code will be something like this: public HttpResponseMessage Get([FromUri] int accountId)         {             HttpResponseMessage response = Request.CreateResponse();             // Create push content with a delegate that will get called when it is time to write out              // the response.             response.Content = new PushStreamContent(                 async (outputStream, httpContent, transportContext) =>                 {                     try                     {                         // Execute the command and get a reader                         using (var reader = GetMetadataListReader(accountId))                         {                             // Read rows asynchronously, put data into buffer and write asynchronously                             while (await reader.ReadAsync())                             {                                 var rec = MapRecord(reader);                                 var str = await JsonConvert.SerializeObjectAsync(rec);                                 var buffer = UTF8Encoding.UTF8.GetBytes(str);                                 // Write out data to output stream                                 await outputStream.WriteAsync(buffer, 0, buffer.Length);                             }                         }                     }                     catch(HttpException ex)                     {                         if (ex.ErrorCode == -2147023667) // The remote host closed the connection.                          {                             return;                         }                     }                     finally                     {                         // Close output stream as we are done                         outputStream.Close();                     }                 });             return response;         } As an extra bonus, all involved classes used already support async/await asynchronous execution model, so taking advantage of that was very easy. Please note that the PushStreamContent class receives in its constructor a lambda (specifically an Action) and we decorated our anonymous method with the async keyword (not a very well known technique but quite handy) so we can await over the I/O intensive calls we execute like reading from the database reader, serializing our entity and finally writing to the output stream.  Well, if we execute the test again we will immediately notice that the a line returns immediately and then the rest of the server code is executed only when the client reads through the obtained stream, therefore we get low memory usage and far greater scalability for our beloved application serving big chunks of data.Enjoy!Andrés.        

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  • From HttpRuntime.Cache to Windows Azure Caching (Preview)

    - by Jeff
    I don’t know about you, but the announcement of Windows Azure Caching (Preview) (yes, the parentheses are apparently part of the interim name) made me a lot more excited about using Azure. Why? Because one of the great performance tricks of any Web app is to cache frequently used data in memory, so it doesn’t have to hit the database, a service, or whatever. When you run your Web app on one box, HttpRuntime.Cache is a sweet and stupid-simple solution. Somewhere in the data fetching pieces of your app, you can see if an object is available in cache, and return that instead of hitting the data store. I did this quite a bit in POP Forums, and it dramatically cuts down on the database chatter. The problem is that it falls apart if you run the app on many servers, in a Web farm, where one server may initiate a change to that data, and the others will have no knowledge of the change, making it stale. Of course, if you have the infrastructure to do so, you can use something like memcached or AppFabric to do a distributed cache, and achieve the caching flavor you desire. You could do the same thing in Azure before, but it would cost more because you’d need to pay for another role or VM or something to host the cache. Now, you can use a portion of the memory from each instance of a Web role to act as that cache, with no additional cost. That’s huge. So if you’re using a percentage of memory that comes out to 100 MB, and you have three instances running, that’s 300 MB available for caching. For the uninitiated, a Web role in Azure is essentially a VM that runs a Web app (worker roles are the same idea, only without the IIS part). You can spin up many instances of the role, and traffic is load balanced to the various instances. It’s like adding or removing servers to a Web farm all willy-nilly and at your discretion, and it’s what the cloud is all about. I’d say it’s my favorite thing about Windows Azure. The slightly annoying thing about developing for a Web role in Azure is that the local emulator that’s launched by Visual Studio is a little on the slow side. If you’re used to using the built-in Web server, you’re used to building and then alt-tabbing to your browser and refreshing a page. If you’re just changing an MVC view, you’re not even doing the building part. Spinning up the simulated Azure environment is too slow for this, but ideally you want to code your app to use this fantastic distributed cache mechanism. So first off, here’s the link to the page showing how to code using the caching feature. If you’re used to using HttpRuntime.Cache, this should be pretty familiar to you. Let’s say that you want to use the Azure cache preview when you’re running in Azure, but HttpRuntime.Cache if you’re running local, or in a regular IIS server environment. Through the magic of dependency injection, we can get there pretty quickly. First, design an interface to handle the cache insertion, fetching and removal. Mine looks like this: public interface ICacheProvider {     void Add(string key, object item, int duration);     T Get<T>(string key) where T : class;     void Remove(string key); } Now we’ll create two implementations of this interface… one for Azure cache, one for HttpRuntime: public class AzureCacheProvider : ICacheProvider {     public AzureCacheProvider()     {         _cache = new DataCache("default"); // in Microsoft.ApplicationServer.Caching, see how-to      }         private readonly DataCache _cache;     public void Add(string key, object item, int duration)     {         _cache.Add(key, item, new TimeSpan(0, 0, 0, 0, duration));     }     public T Get<T>(string key) where T : class     {         return _cache.Get(key) as T;     }     public void Remove(string key)     {         _cache.Remove(key);     } } public class LocalCacheProvider : ICacheProvider {     public LocalCacheProvider()     {         _cache = HttpRuntime.Cache;     }     private readonly System.Web.Caching.Cache _cache;     public void Add(string key, object item, int duration)     {         _cache.Insert(key, item, null, DateTime.UtcNow.AddMilliseconds(duration), System.Web.Caching.Cache.NoSlidingExpiration);     }     public T Get<T>(string key) where T : class     {         return _cache[key] as T;     }     public void Remove(string key)     {         _cache.Remove(key);     } } Feel free to expand these to use whatever cache features you want. I’m not going to go over dependency injection here, but I assume that if you’re using ASP.NET MVC, you’re using it. Somewhere in your app, you set up the DI container that resolves interfaces to concrete implementations (Ninject call is a “kernel” instead of a container). For this example, I’ll show you how StructureMap does it. It uses a convention based scheme, where if you need to get an instance of IFoo, it looks for a class named Foo. You can also do this mapping explicitly. The initialization of the container looks something like this: ObjectFactory.Initialize(x =>             {                 x.Scan(scan =>                         {                             scan.AssembliesFromApplicationBaseDirectory();                             scan.WithDefaultConventions();                         });                 if (Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.IsAvailable)                     x.For<ICacheProvider>().Use<AzureCacheProvider>();                 else                     x.For<ICacheProvider>().Use<LocalCacheProvider>();             }); If you use Ninject or Windsor or something else, that’s OK. Conceptually they’re all about the same. The important part is the conditional statement that checks to see if the app is running in Azure. If it is, it maps ICacheProvider to AzureCacheProvider, otherwise it maps to LocalCacheProvider. Now when a request comes into your MVC app, and the chain of dependency resolution occurs, you can see to it that the right caching code is called. A typical design may have a call stack that goes: Controller –> BusinessLogicClass –> Repository. Let’s say your repository class looks like this: public class MyRepo : IMyRepo {     public MyRepo(ICacheProvider cacheProvider)     {         _context = new MyDataContext();         _cache = cacheProvider;     }     private readonly MyDataContext _context;     private readonly ICacheProvider _cache;     public SomeType Get(int someTypeID)     {         var key = "somename-" + someTypeID;         var cachedObject = _cache.Get<SomeType>(key);         if (cachedObject != null)         {             _context.SomeTypes.Attach(cachedObject);             return cachedObject;         }         var someType = _context.SomeTypes.SingleOrDefault(p => p.SomeTypeID == someTypeID);         _cache.Add(key, someType, 60000);         return someType;     } ... // more stuff to update, delete or whatever, being sure to remove // from cache when you do so  When the DI container gets an instance of the repo, it passes an instance of ICacheProvider to the constructor, which in this case will be whatever implementation was specified when the container was initialized. The Get method first tries to hit the cache, and of course doesn’t care what the underlying implementation is, Azure, HttpRuntime, or otherwise. If it finds the object, it returns it right then. If not, it hits the database (this example is using Entity Framework), and inserts the object into the cache before returning it. The important thing not pictured here is that other methods in the repo class will construct the key for the cached object, in this case “somename-“ plus the ID of the object, and then remove it from cache, in any method that alters or deletes the object. That way, no matter what instance of the role is processing the request, it won’t find the object if it has been made stale, that is, updated or outright deleted, forcing it to attempt to hit the database. So is this good technique? Well, sort of. It depends on how you use it, and what your testing looks like around it. Because of differences in behavior and execution of the two caching providers, for example, you could see some strange errors. For example, I immediately got an error indicating there was no parameterless constructor for an MVC controller, because the DI resolver failed to create instances for the dependencies it had. In reality, the NuGet packaged DI resolver for StructureMap was eating an exception thrown by the Azure components that said my configuration, outlined in that how-to article, was wrong. That error wouldn’t occur when using the HttpRuntime. That’s something a lot of people debate about using different components like that, and how you configure them. I kinda hate XML config files, and like the idea of the code-based approach above, but you should be darn sure that your unit and integration testing can account for the differences.

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  • WPF TreeView databinding to hide/show expand/collapse icon

    - by Julian Lettner
    I implemented a WPF load-on-demand treeview like described in this (very good) article. In the mentioned solution a dummy element is used to preserve the expand + icon / treeview item behavior. The dummy item is replaced with real data, when the user clicks on the expander. I want to refine the model by adding a property public bool HasChildren { get { ... } } to my backing TreeNodeViewModel. Question: How can I bind this property to hide/show the expand icon (in XAML)? I am not able to find a suitable trigger/setter combination. (INotifyPropertyChanged is properly implemented.) Thanks for your time. Update 1: I want to use my property public bool HasChildren instead of using the dummy element. Determining whether or not an item has children is somewhat costly, but still much cheaper than fetching the children.

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  • Difference between Claims vs OAuth

    - by Venki
    What is the difference between Claims based authentication vs What is provided by OAuth. I am looking for conceptual difference and not technical difference. When do I choose Claims over OAuth and vice versa. Claims based authentication is proposed by Microsoft and build on top of WS-Security. But OAuth is more a open source protocol that is being proposed to allow fetching resources from different portals based on a security token. Claims also has this concept of token (SAML encoded or X509 certificates). I am trying to understand when do I choose Claims over OAuth and vice versa. Thanks

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  • Using facebook oauth 2.0 - How do I fetch the access token

    - by Chris Sunderland
    Hi all! I am new to oauth and I'm trying to use facebook connect with my web-application. I have succeded in getting a verification token but my problem is "fetching" the access token. How do I fetch it? Facebook documentation tells me to fetch the access token with this URL: https://graph.facebook.com/oauth/access_token?' + 'client_id=XXXXXXXXXXXX& redirect_uri=http://www.mysite.com/fbconn/index.html&display=touch&' + 'client_secret=axxxxxcxxxxxxxxxxx&code=' + code; When I use this I see the access token on a blank page, but I want to fetch it with javascript (AJAX) /PHP or something. Is this possible? I thought the access token would be appended to my redirect uri like the verfication code but I never get redirected to my page. What am I doing wrong? Grateful for help/comments /Chris

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  • Creating Tables and Retrieving Query results with Dynamics AX 2009 business connector

    - by namenlos
    I'm writing a C# command line tool to fetch data from AX and to add data (create new tables) to AX. Fetching data from an AX table is easy and documented here: http://msdn.microsoft.com/en-us/library/cc197126.aspx Adding data to an existing table is also easy: http://msdn.microsoft.com/en-us/library/aa868997.aspx But I cannot figure out how to do two things: Create a new AX Table Retrieve data from an AX Query Can someone please share some sample code or give some pointers on where to start looking. My searches on Google and MSDN have not revealed much. NOTE: I am not an experienced AX or ERP developer.

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  • Hibernate: Perform criteria query with Sub-Select AND Left-Outer join?

    - by Markos Fragkakis
    Can I perform a Criteria query with Sub-Select AND Left-Outer join? For example, I have A 1-many B 1-many C. With Criteria.createAlias ("b", "b", Criteria.LEFT_JOIN) I can perform Left Outer join. With Criteria.setFetchMode ("b", org.hibernate.FetchMode.DEFAULT) I can perform Join with the default fetching strategy. I assume that having set @org.hibernate.annotations.FetchMode.SUBSELECT in both A.B and B.C is enough (is it?). Question 1: Why does org.hibernate.FetchMode not have SUBSELECT option, whereas the org.hibernate.annotations.FetchMode does? Question 2: Can I perform a Criteria query with Sub-Select AND Left-Outer join?

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