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  • linq subquery child collection to string

    - by bill
    Hi All, i am trying to figure out how to write a linq query that will return a child collections "name" property as a string. I have a BO that has a "options" property where the options are the "name" property of each option in an "order" object. I would like the result to look something like order.id = 12312 order.date = 12/03/10 order.options = "Option 1 Name, Option 2 Name, Option 3 Name" I hope this makes sense. thanks for any and all help!

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  • Implementation of interface when using child class of a parent class in method of interface

    - by dotnetdev
    I don't have access to my dev environment, but when I write the below: interface IExample void Test (HtmlControl ctrl); class Example : IExample { public void Test (HtmlTextArea area) { } I get an error stating the methods in the class implementation don't match the interface - so this is not possible. HtmlTextArea is a child class of HtmlControl, is there no way this is possible? I tried with .NET 3.5, but .NET 4.0 may be different (I am interested in any solution with either framework). Thanks

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  • Close child form if already open

    - by j-t-s
    Hi All How can I go about closing a Child form if it's already open? And if it isn't already open, then open it? Thank you I already have this code, which doesn't work, obviously: Form ibx = new inbox(); if(ibx.Visible) ibx.Dispose(); else ibx.Show(); All that the above does is creates a new form whether or not it's already open.

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  • extjs how to make a nested child using xTemplate when we don't know how deep is it?

    - by Ebo the gordon
    first, sorry if my english bad,.... in my script, variable tplData below is dynamic,... (lets say it generates from database) so, every chid, can have another child. and so on,.... now, i'm stack how to iteration it,.. var tplData = [{ name : 'Naomi White' },{ name : 'Yoko Ono' },{ name : 'John Smith', child : [{ name:'Michael (John\'s son)', child: [{ name : 'Brad (Michael\'s son,John\'s grand son)' },{ name : 'Brid (Michael\'s son,John\'s grand son)', child: [{ name:'Buddy (Brid\'s son,Michael\'s grand son)' }] },{ name : 'Brud (Michael\'s son,John\'s grand son)' }] }] }]; var myTpl = new Ext.XTemplate( '<tpl for=".">', '<div style="background-color: {color}; margin: 10px;">', '<b> Name :</b> {name}<br />', // how to make this over and over every child (while it has ) '<tpl if="typeof child !=\'undefined\'">', '<b> Child : </b>', '<tpl for="child">', '{name} <br />', '</tpl>', '</tpl>', /////////////////////////////////////// '</div>', '</tpl>' ); myTpl.compile(); myTpl.overwrite(document.body, tplData);

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  • When calling a static method on parent class, can the parent class deduce the type on the child (C#)

    - by Matt
    Suppose we have 2 classes, Child, and the class from which it inherits, Parent. class Parent { public static void MyFunction(){} } class Child : Parent { } Is it possible to determine in the parent class how the method was called? Because we can call it two ways: Parent.MyFunction(); Child.MyFunction(); My current approach was trying to use: MethodInfo.GetCurrentMethod().ReflectedType; // and MethodInfo.GetCurrentMethod().DeclaringType; But both appear to return the Parent type. If you are wondering what, exactly I am trying to accomplish (and why I am violating the basic OOP rule that the parent shouldn't have to know anything about the child), the short of it is this (let me know if you want the long version): I have a Model structure representing some of our data that persists to the database. All of these models inherit from an abstract Parent. This parent implements a couple of events, such as SaveEvent, DeleteEvent, etc. We want to be able to subscribe to events specific to the type. So, even though the event is in the parent, I want to be able to do: Child.SaveEvent += new EventHandler((sender, args) => {}); I have everything in place, where the event is actually backed by a dictionary of event handlers, hashed by type. The last thing I need to get working is correctly detecting the Child type, when doing Child.SaveEvent. I know I can implement the event in each child class (even forcing it through use of abstract), but it would be nice to keep it all in the parent, which is the class actually firing the events (since it implements the common save/delete/change functionality).

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  • ASP.NET MVC 2 - Saving child entities on form submit

    - by Justin
    Hey, I'm using ASP.NET MVC 2 and am struggling with saving child entities. I have an existing Invoice entity (which I create on a separate form) and then I have a LogHours view that I'd like to use to save InvoiceLog's, which are child entities of Invoice. Here's the view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<TothSolutions.Data.Invoice>" %> <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> Log Hours </asp:Content> <asp:Content ID="Content3" ContentPlaceHolderID="HeadContent" runat="server"> <script type="text/javascript"> $(document).ready(function () { $("#InvoiceLogs_0__Description").focus(); }); </script> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <h2>Log Hours</h2> <% using (Html.BeginForm("SaveHours", "Invoices")) {%> <%: Html.ValidationSummary(true) %> <fieldset> <legend>Fields</legend> <table> <tr> <th>Date</th> <th>Description</th> <th>Hours</th> </tr> <% int index = 0; foreach (var log in Model.InvoiceLogs) { %> <tr> <td><%: log.LogDate.ToShortDateString() %></td> <td><%: Html.TextBox("InvoiceLogs[" + index + "].Description")%></td> <td><%: Html.TextBox("InvoiceLogs[" + index + "].Hours")%></td> <td>Hours</td> </tr> <% index++; } %> </table> <p> <%: Html.Hidden("InvoiceID") %> <%: Html.Hidden("CreateDate") %> <input type="submit" value="Save" /> </p> </fieldset> <% } %> <div> <%: Html.ActionLink("Back to List", "Index") %> </div> </asp:Content> And here's the controller code: //GET: /Secure/Invoices/LogHours/ public ActionResult LogHours(int id) { var invoice = DataContext.InvoiceData.Get(id); if (invoice == null) { throw new Exception("Invoice not found with id: " + id); } return View(invoice); } //POST: /Secure/Invoices/SaveHours/ [AcceptVerbs(HttpVerbs.Post)] public ActionResult SaveHours([Bind(Exclude = "InvoiceLogs")]Invoice invoice) { TryUpdateModel(invoice.InvoiceLogs, "InvoiceLogs"); invoice.UpdateDate = DateTime.Now; invoice.DeveloperID = DeveloperID; //attaching existing invoice. DataContext.InvoiceData.Attach(invoice); //save changes. DataContext.SaveChanges(); //redirect to invoice list. return RedirectToAction("Index"); } And the data access code: public static void Attach(Invoice invoice) { var i = new Invoice { InvoiceID = invoice.InvoiceID }; db.Invoices.Attach(i); db.Invoices.ApplyCurrentValues(invoice); } In the SaveHours action, it properly sets the values of the InvoiceLog entities after I call TryUpdateModel but when it does SaveChanges it doesn't update the database with the new values. Also, if you manually update the values of the InvoiceLog entries in the database and then go to this page it doesn't populate the textboxes so it's clearly not binding correctly. Thanks, Justin

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  • php-fpm version 5.4 with nginx constantly restarting

    - by endyourif
    I just upgraded my php version from 5.3.x to 5.4.x and since doing this - memory has dropped signifincantly! - however, I'm constantly getting these in my php5-fpm.log: [18-Sep-2012 15:11:34] WARNING: [pool www] child 8981 exited on signal 11 (SIGSEGV - core dumped) after 65.813370 seconds from start [18-Sep-2012 15:11:34] NOTICE: [pool www] child 8988 started [18-Sep-2012 15:12:09] WARNING: [pool www] child 8988 exited on signal 11 (SIGSEGV - core dumped) after 35.185071 seconds from start [18-Sep-2012 15:12:09] NOTICE: [pool www] child 8990 started [18-Sep-2012 15:12:17] WARNING: [pool www] child 8990 exited on signal 11 (SIGSEGV - core dumped) after 8.277977 seconds from start [18-Sep-2012 15:12:17] NOTICE: [pool www] child 8992 started [18-Sep-2012 15:12:18] WARNING: [pool www] child 8982 exited on signal 11 (SIGSEGV - core dumped) after 109.550089 seconds from start [18-Sep-2012 15:12:18] NOTICE: [pool www] child 8995 started [18-Sep-2012 15:12:18] WARNING: [pool www] child 8985 exited on signal 11 (SIGSEGV - core dumped) after 109.668554 seconds from start [18-Sep-2012 15:12:18] NOTICE: [pool www] child 8996 started From what I can gather this is php silently dying? I'm running basic Wordpress sites that keep popping up with 502 errors while php-fpm is constantly spinning up new processes.

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  • Creating Lotus Notes documents with specific created/modified/last accessed dates for testing

    - by Xolstice
    I'm currently writing an application that moves Notes documents between databases based on the amount of days that have elapsed from the creation/modified/last accessed dates. I would just like to get ideas on a simple and convenient way to create documents with specific dates, without having to change the time on the Domino server, so that I could test out my application. The best way I found so far was to create a local replica and change the system clock to the date I want. Unfortunately there are problems associated with this method. It does not work on the modified date - I'm not sure how it is getting the modified date information when the location is set to Island (Disconnected) - and it also changes the modified and last accessed dates when the documents are replicated to the server replica. Someone suggested trying to create a DXL of the document, modify the date time in the DXL file, then import it back into the database as a Notes document; but that does not work. It just takes on the date-time that it was created. Can anyone offer any other suggestions?

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  • Setting style on first and last visible TabItem of TabControl

    - by Donnelle
    I want to set a style on the first and last TabItems in a TabControl, and have them updated as the visibility of the TabItems is changed. I can't see a way to do so with triggers. What we're after looks like this: | | And the visibility of TabItems are determined by binding. I do have it working in code. On TabItem visibility changed, enumerate through TabItems until you find the first visible one. Set the style on that one. For all other visible TabItems, set them to the pointy style (so that the previously first visible one is now pointy). Then start from the end until you find a visible TabItem and set the last style on that one. (This also lets us address an issue with TabControl where it will display the content of a non-visible TabItem if none of the visible TabItems are selected.) There's undoubtably improvements I could make to my method, but I'm not convinced that it IS the right approach. How would you approach this?

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  • adding header row to gridview won't allow you to save the last item row

    - by Lex
    I've modified my GridView to have an extra Header row, however that extra row has caused my grid view row count to be incorrect. Basically, when I want to save the Gridview now, it doesn't recognize the last item line. In my current test I have 5 Item Lines, however only 4 of them are being saved. My code for creating the additional header Line: protected void gvStatusReport_RowDataBound(object sender, GridViewRowEventArgs e) { // This grid has multiple rows, fake the top row. if (e.Row.RowType == DataControlRowType.Header) { SortedList FormatCells = new SortedList(); FormatCells.Add("1", ",6,1"); FormatCells.Add("2", "Time Spent,7,1"); FormatCells.Add("3", "Total,2,1"); FormatCells.Add("4", ",6,1"); GetMultiRowHeader(e, FormatCells); } } The function to create a new row: public void GetMultiRowHeader(GridViewRowEventArgs e, SortedList GetCels) { GridViewRow row; IDictionaryEnumerator enumCels = GetCels.GetEnumerator(); row = new GridViewRow(-1, -1, DataControlRowType.Header, DataControlRowState.Normal); while (enumCels.MoveNext()) { string[] count = enumCels.Value.ToString().Split(Convert.ToChar(",")); TableCell cell = new TableCell(); cell.RowSpan = Convert.ToInt16(count[2].ToString()); cell.ColumnSpan = Convert.ToInt16(count[1].ToString()); cell.Controls.Add(new LiteralControl(count[0].ToString())); cell.HorizontalAlign = HorizontalAlign.Center; row.Cells.Add(cell); } e.Row.Parent.Controls.AddAt(0, row); } Then when I'm going to save, I loop through the rows: int totalRows = gvStatusReport.Rows.Count; for (int rowNumber = 0; rowNumber < totalRows; rowNumber++) { However the first line doesn't seem to have any of the columns that the item row has, and the last line doesn't even show up. My problem is that I do need the extra header line, but what is the best way to fix this?

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  • Django: Overriding the save() method: how do I call the delete() method of a child class

    - by Patti
    The setup = I have this class, Transcript: class Transcript(models.Model): body = models.TextField('Body') doPagination = models.BooleanField('Paginate') numPages = models.PositiveIntegerField('Number of Pages') and this class, TranscriptPages(models.Model): class TranscriptPages(models.Model): transcript = models.ForeignKey(Transcript) order = models.PositiveIntegerField('Order') content = models.TextField('Page Content', null=True, blank=True) The Admin behavior I’m trying to create is to let a user populate Transcript.body with the entire contents of a long document and, if they set Transcript.doPagination = True and save the Transcript admin, I will automatically split the body into n Transcript pages. In the admin, TranscriptPages is a StackedInline of the Transcript Admin. To do this I’m overridding Transcript’s save method: def save(self): if self.doPagination: #do stuff super(Transcript, self).save() else: super(Transcript, self).save() The problem = When Transcript.doPagination is True, I want to manually delete all of the TranscriptPages that reference this Transcript so I can then create them again from scratch. So, I thought this would work: #do stuff TranscriptPages.objects.filter(transcript__id=self.id).delete() super(Transcript, self).save() but when I try I get this error: Exception Type: ValidationError Exception Value: [u'Select a valid choice. That choice is not one of the available choices.'] ... and this is the last thing in the stack trace before the exception is raised: .../django/forms/models.py in save_existing_objects pk_value = form.fields[pk_name].clean(raw_pk_value) Other attempts to fix: t = self.transcriptpages_set.all().delete() (where self = Transcript from the save() method) looping over t (above) and deleting each item individually making a post_save signal on TranscriptPages that calls the delete method Any ideas? How does the Admin do it? UPDATE: Every once in a while as I'm playing around with the code I can get a different error (below), but then it just goes away and I can't replicate it again... until the next random time. Exception Type: MultiValueDictKeyError Exception Value: "Key 'transcriptpages_set-0-id' not found in " Exception Location: .../django/utils/datastructures.py in getitem, line 203 and the last lines from the trace: .../django/forms/models.py in _construct_form form = super(BaseInlineFormSet, self)._construct_form(i, **kwargs) .../django/utils/datastructures.py in getitem pk = self.data[pk_key]

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  • My hosting server giving memory allocation error

    - by Usman
    I have hosted my website on shared hosting linux server. As there are atmost 10-15 visitors come to my website daily but My wordpress website most of the times gives 500 Internal Server Error. I accessed my server Error Log following error is showing: [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:32 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:31 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:26 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php Is my hosting service really bad. And any solution. Thanks in advance.

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  • Can't save data for a member in a data form

    - by RahulS
    Implied sharing is an old thing everyone knows the reasons and solutions of that, still little theory about that: With Essbase implied sharing, some members are shared even if you do not explicitly set them as shared. These members are implied shared members. When an implied share relationship is created, each implied member assumes the other member’s value. Essbase assumes (or implies) a shared member relationship in these situations: 1. A parent has only one child 2. A parent has only one child that consolidates to the parent In a Planning form that contains members with an implied sharing relationship, when a value is added for the parent, the child assumes the same value after the form is saved. Likewise, if a value is added for the child, the parent usually assumes the same value after a form is saved.For example, when a calculation script or load rule populates an implied share member, the other implied share member assumes the value of the member populated by the calculation script or load rule. The last value calculated or imported takes precedence. The result is the same whether you refer to the parent or the child as a variable in a calculation script. For more information have a look at: http://docs.oracle.com/cd/E17236_01/epm.1112/hp_admin_11122/ch14s11.html Now the issue which we are going to talk about is We loose data on save even when the parent is dynamic calc and has a single child. A dynamic calc parent to a single child:  If we design the form with following selection: In the data form we will find parent below the member and this is by design whenever you make a selection using commands to select all the member below parent, always children will appear before the parent: Lets try to enter data, Save it Now, try to change the way we selected members Here we go: Now the question again why this behavior: 1. Data from Planning data form passes to Essbase row by row, 2. Because in data form the child member appears before the parent, 3. First, data goes to Essbase for child (SingleStoreChild), 4. Then when Planning passes the data for parent there was #Missing or No data,  5. Over writes the data to #missing. PS: As we know that dynamic calc members are calculated on the fly they are not allocated with any memory in the Essbase, here the parent was dynamic calc and it was pointing to same memory as child in the background, when Planning was passing data to Essbase for second row it has updated the child with missing data.(Little confusing, let me know if you need more explanation) 6. As one of the solutions just change the order of appearance of parent and child. Cheers..!!! Rahul S. https://www.facebook.com/pages/HyperionPlanning/117320818374228

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  • Database Backup History From MSDB in a pivot table

    - by steveh99999
    I knocked up a nice little query to display backup history for each database in a pivot table format.I wanted to display the most recent full, differential, and transaction log backup for each database. Here's the SQL :-WITH backupCTE AS (SELECT name, recovery_model_desc, d AS 'Last Full Backup', i AS 'Last Differential Backup', l AS 'Last Tlog Backup' FROM ( SELECT db.name, db.recovery_model_desc,type, backup_finish_date FROM master.sys.databases db LEFT OUTER JOIN msdb.dbo.backupset a ON a.database_name = db.name WHERE db.state_desc = 'ONLINE' ) AS Sourcetable   PIVOT (MAX (backup_finish_date) FOR type IN (D,I,L) ) AS MostRecentBackup ) SELECT * FROM backupCTE Gives output such as this :-  With this query, I can then build up some straightforward queries to ensure backups are scheduled and running as expected -For example, the following logic can be used ;-  - WHERE [Last Full Backup] IS NULL) - ie database has never been backed up.. - WHERE [Last Tlog Backup] < DATEDIFF(mm,GETDATE(),-60) AND recovery_model_desc <> 'SIMPLE') - transction log not backed up in last 60 minutes. - WHERE [Last Full Backup] < DATEDIFF(dd,GETDATE(),-1) AND [Last Differential Backup] < [Last Full Backup]) -- no backup in last day.- WHERE [Last Differential Backup] < DATEDIFF(dd,GETDATE(),-1) AND [Last Full Backup] < DATEDIFF(dd,GETDATE(),-8) ) -- no differential backup in last day when last full backup is over 8 days old.   

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  • SUM of metric for normalized logical hierarchy

    - by Alex254
    Suppose there's a following table Table1, describing parent-child relationship and metric: Parent | Child | Metric (of a child) ------------------------------------ name0 | name1 | a name0 | name2 | b name1 | name3 | c name2 | name4 | d name2 | name5 | e name3 | name6 | f Characteristics: 1) Child always has 1 and only 1 parent; 2) Parent can have multiple children (name2 has name4 and name5 as children); 3) Number of levels in this "hierarchy" and number of children for any given parent are arbitrary and do not depend on each other; I need SQL request that will return result set with each name and a sum of metric of all its descendants down to the bottom level plus itself, so for this example table the result would be (look carefully at name1): Name | Metric ------------------ name1 | a + c + f name2 | b + d + e name3 | c + f name4 | d name5 | e name6 | f (name0 is irrelevant and can be excluded). It should be ANSI or Teradata SQL. I got as far as a recursive query that can return a SUM (metric) of all descendants of a given name: WITH RECURSIVE temp_table (Child, metric) AS ( SELECT root.Child, root.metric FROM table1 root WHERE root.Child = 'name1' UNION ALL SELECT indirect.Child, indirect.metric FROM temp_table direct, table1 indirect WHERE direct.Child = indirect.Parent) SELECT SUM(metric) FROM temp_table; Is there a way to turn this query into a function that takes name as an argument and returns this sum, so it can be called like this? SELECT Sum_Of_Descendants (Child) FROM Table1; Any suggestions about how to approach this from a different angle would be appreciated as well, because even if the above way is implementable, it will be of poor performance - there would be a lot of iterations of reading metrics (value f would be read 3 times in this example). Ideally, the query should read a metric of each name only once.

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  • Spring aop multiple pointcuts & advice but only the last one is working

    - by Jarle Hansen
    I have created two Spring AOP pointcuts that are completely separate and will be woven in for different parts of the system. The pointcuts are used in two different around advices, these around-advices will point to the same Java method. How the xml-file looks: <aop:config> <aop:pointcut expression="execution(......)" id="pointcutOne" /> <aop:pointcut expression="execution(.....)" id="pointcurTwo" /> <aop:aspect id="..." ref="springBean"> <aop:around pointcut-ref="pointcutOne" method="commonMethod" /> <aop:aroung pointcut-ref="pointcutTwo" method="commonMethod" /> </aop:aspect> </aop:config> The problem is that only the last pointcut works (if I change the order "pointcutOne" works because it is last). I have gotten it to work by creating one big pointcut, but I would like to have them separate. Any suggestions to why only one of the pointcuts works at a time?

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  • Boost Asio UDP retrieve last packet in socket buffer

    - by Alberto Toglia
    I have been messing around Boost Asio for some days now but I got stuck with this weird behavior. Please let me explain. Computer A is sending continuos udp packets every 500 ms to computer B, computer B desires to read A's packets with it own velocity but only wants A's last packet, obviously the most updated one. It has come to my attention that when I do a: mSocket.receive_from(boost::asio::buffer(mBuffer), mEndPoint); I can get OLD packets that were not processed (almost everytime). Does this make any sense? A friend of mine told me that sockets maintain a buffer of packets and therefore If I read with a lower frequency than the sender this could happen. ¡? So, the first question is how is it possible to receive the last packet and discard the ones I missed? Later I tried using the async example of the Boost documentation but found it did not do what I wanted. http://www.boost.org/doc/libs/1_36_0/doc/html/boost_asio/tutorial/tutdaytime6.html From what I could tell the async_receive_from should call the method "handle_receive" when a packet arrives, and that works for the first packet after the service was "run". If I wanted to keep listening the port I should call the async_receive_from again in the handle code. right? BUT what I found is that I start an infinite loop, it doesn't wait till the next packet, it just enters "handle_receive" again and again. I'm not doing a server application, a lot of things are going on (its a game), so my second question is, do I have to use threads to use the async receive method properly, is there some example with threads and async receive? Thanks for you attention.

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  • While loop not reading in the last item

    - by Gandalf StormCrow
    I'm trying to read in a multi line string then split it then print it .. here is the string : 1T1b5T!1T2b1T1b2T!1T1b1T2b2T!1T3b1T1b1T!3T3b1T!1T3b1T1b1T!5T1*1T 11X21b1X 4X1b1X When I split the string with ! I get this without the last line string : 1T1b5T 1T1b5T1T2b1T1b2T 1T2b1T1b2T1T1b1T2b2T 1T1b1T2b2T1T3b1T1b1T 1T3b1T1b1T3T3b1T 3T3b1T1T3b1T1b1T 1T3b1T1b1T5T1*1T 5T1*1T11X21b1X 11X21b1X Here is my code : import java.io.BufferedInputStream; import java.util.Scanner; public class Main { public static void main(String args[]) { Scanner stdin = new Scanner(new BufferedInputStream(System.in)); while (stdin.hasNext()) { for (String line : stdin.next().split("!")) { System.out.println(line); for (int i = 0; i < line.length(); i++) { System.out.print(line.charAt(i)); } } } } } Where did I make the mistake, why is not reading in the last line? After I read in all lines properly I should go trough each line if I encounter number I should print the next char the n times the number I just read, but that is long way ahead first I need help with this. Thank you UPDATE : Here is how the output should look like : 1T1b5T 1T2b1T1b2T 1T1b1T2b2T 1T3b1T1b1T 3T3b1T 1T3b1T1b1T 5T1*1T 11X21b1X 4X1b1X Here is a solution in C(my friend solved it not me), but I'd stil wanted to do it in JAVA : #include <stdio.h> int main (void) { char row[134]; for (;fgets (row,134,stdin)!=NULL;) { int i,j=0; for (i=0;row[i]!='\0';i++) { if (row[i]<='9'&&row[i]>='1') j+=(row[i]-'0'); else if ((row[i]<='Z'&&row[i]>='A')||row[i]=='*') for (;j;j--) printf ("%c",row[i]); else if (row[i]=='b') for (;j;j--) printf (" "); else if (row[i]=='!'||row[i]=='\n') printf ("\n"); } } return 0; }

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  • bind parent child listview asp.net

    - by Chris
    I'm trying to display two linq query results in a prent and child listview. I have the following code which gets the correct values to populate the listviews but when I nest the child listview inside the parent list view, I get an error saying "The name 'ListView2' does not exist in the current context". I presume I need to bind the two listviews in the code behind but my problem is I don't know how or the best way to do this. I have read a couple of posts on similar problems but my lack of knowledge on the subject doesn't make it clear to me. Please can somebody help me figure this out? It's the final piece of code I need to complete. Many thanks in advance. Here is my .aspx code: <asp:ListView ID="ListView1" runat="server"> <EmptyDataTemplate>No data was returned.</EmptyDataTemplate> <ItemSeparatorTemplate><br /></ItemSeparatorTemplate> <ItemTemplate> <li> <asp:Label ID="LabelID" runat="server" Text='<%# Eval("RecordID") %>'></asp:Label><br /> <asp:Label ID="LabelNumber" runat="server" Text='<%# Eval("CartID") %>'></asp:Label><br /> <asp:Label ID="LabelName" runat="server" Text='<%# Eval("Number") %>'></asp:Label><br /> <asp:Label ID="LabelDestination" runat="server" Text='<%# Eval("Destination") %>'></asp:Label><br /> <asp:Label ID="LabelPkgName" runat="server" Text='<%# Eval("PkgName") %>'></asp:Label> <li> <!-- LIST VIEW FOR FEATURES --> <asp:ListView ID="ListView2" runat="server"> <EmptyDataTemplate>No data was returned.</EmptyDataTemplate> <ItemSeparatorTemplate><br /></ItemSeparatorTemplate> <ItemTemplate> <li> <asp:Label ID="LabelFeatureName" runat="server" Text='<%# Eval("FeatureName") %>'></asp:Label><br /> <asp:Label ID="LabelFeatureSetUp" runat="server" Text='<%# Eval("FeatureSetUp") %>'></asp:Label><br /> <asp:Label ID="LabelFeatureMonthly" runat="server" Text='<%# Eval("FeatureMonthly") %>'></asp:Label><br /> </li> </ItemTemplate> <LayoutTemplate> <ul ID="itemPlaceholderContainer" runat="server" style=""> <li runat="server" id="itemPlaceholder" /> </ul> </LayoutTemplate> </asp:ListView> <!-- LIST VIEW FOR FEATURES [END] --> </li> </li> </ItemTemplate> <LayoutTemplate> <ul ID="itemPlaceholderContainer" runat="server" style=""> <li runat="server" id="itemPlaceholder" /> </ul> </LayoutTemplate> </asp:ListView> Here is my code behind: MyShoppingCart userShoppingCart = new MyShoppingCart(); string cartID = userShoppingCart.GetShoppingCartId(); using (ShoppingCartv2Entities db = new ShoppingCartv2Entities()) { var CartNumber = from c in db.NewViews where c.CartID == cartID select c; foreach (NewView item in CartNumber) { ListView1.DataSource = CartNumber; ListView1.DataBind(); } var CartFeature = from f in db.NewViews join o in db.NumberFeatureViews on f.RecordID equals o.RecordID where f.CartID == cartID select new { o.FeatureName, o.FeatureSetUp, o.FeatureMonthly }; foreach (var x in CartFeature) { ListView2.DataSource = CartFeature; ListView2.DataBind(); } }

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  • count of last item of the day

    - by frenchie
    I have a query in which one of the fields contains the count of status. The status can change several times a day and the count should be based on the final status of the day. For instance, this is what I have for Status1. CountStatus1 = (from status in MyDataContext.StatusHistories where status.UserID == TheUserID where status.StatusDateTime.Month == TheMonth.Month where status.StatusDateTime.Year == TheMonth.Year where status.NewStatus == 1 // where the LAST STATUS OF THE DAY == 1 select status.StatusID).Count() The problem is that I want to select the last status of the day to be equal to 1, and count those. The status for a day can change from 1 to 4 to 2 to 5 to 3 and then to finally to 1; if I write the query like this, the count will include 2 1's and then the 4,2,5 and 3 will also be counted in CountStatus4, CountStatus3, CountStatus"n". The return data is a monthly report grouped by day, where each day is a row. The structure of the query looks like this: var OutputStatusReport = from w in MyDataContext.WorkHistory where w.UserID == TheUserID where w.WorkDatetime.Month == TheMonth.Month where w.WorkDatetime.Year == TheMonth.Year group w by w.Datetime.Date into daygroups select new MyObjectModel { CountStatus1 = ...., CountStatus2 = ...., CountStatus3 =...... }; So I need the day of the count to match the day of daygroups. I'm struggling to figure this one out and any help is very welcome. Thanks.

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  • How to check if a child-object is populated

    - by TheQ
    How can i check if a child-object of a linq-object is populated or not? Example code below. My model have two methods, one joins data, and the other does not: public static Member GetMemberWithPhoto(Guid memberId) { using (DataContext db = new DataContext()) { DataLoadOptions dataLoadOptions = new DataLoadOptions(); dataLoadOptions.LoadWith<Member>(x => x.UserPhoto); db.LoadOptions = dataLoadOptions; var query = from x in db.Members where x.MemberId == memberId select x; return query.FirstOrDefault(); } } public static Member GetMember(Guid memberId) { using (DataContext db = new DataContext()) { var query = from x in db.Members where x.MemberId == memberId select x; return query.FirstOrDefault(); } } Then my control have the following code: Member member1 = Member.GetMemberWithPhoto(memberId); Member member2 = Member.GetMember(memberId); Debug.WriteLine(member1.UserPhoto.ToString()); Debug.WriteLine(member2.UserPhoto.ToString()); The last line will generate a "Cannot access a disposed object" exception. I know that i can get rid of that exception just by not disposing the datacontext, but then the last line will generate a new query to the database, and i don't want that. What i would like is something like: Debug.WriteLine((member1.UserPhoto.IsPopulated()) ? member1.UserPhoto.ToString() : "none"); Debug.WriteLine((member2.UserPhoto.IsPopulated()) ? member2.UserPhoto.ToString() : "none"); Is it possible?

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  • Please clarify how create/update happens against child entities of an aggregate root

    - by christian
    After much reading and thinking as I begin to get my head wrapped around DDD, I am a bit confused about the best practices for dealing with complex hierarchies under an aggregate root. I think this is a FAQ but after reading countless examples and discussions, no one is quite talking about the issue I'm seeing. If I am aligned with the DDD thinking, entities below the aggregate root should be immutable. This is the crux of my trouble, so if that isn't correct, that is why I'm lost. Here is a fabricated example...hope it holds enough water to discuss. Consider an automobile insurance policy (I'm not in insurance, but this matches the language I hear when on the phone w/ my insurance company). Policy is clearly an entity. Within the policy, let's say we have Auto. Auto, for the sake of this example, only exists within a policy (maybe you could transfer an Auto to another policy, so this is potential for an aggregate as well, which changes Policy...but assume it simpler than that for now). Since an Auto cannot exist without a Policy, I think it should be an Entity but not a root. So Policy in this case is an aggregate root. Now, to create a Policy, let's assume it has to have at least one auto. This is where I get frustrated. Assume Auto is fairly complex, including many fields and maybe a child for where it is garaged (a Location). If I understand correctly, a "create Policy" constructor/factory would have to take as input an Auto or be restricted via a builder to not be created without this Auto. And the Auto's creation, since it is an entity, can't be done beforehand (because it is immutable? maybe this is just an incorrect interpretation). So you don't get to say new Auto and then setX, setY, add(Z). If Auto is more than somewhat trivial, you end up having to build a huge hierarchy of builders and such to try to manage creating an Auto within the context of the Policy. One more twist to this is later, after the Policy is created and one wishes to add another Auto...or update an existing Auto. Clearly, the Policy controls this...fine...but Policy.addAuto() won't quite fly because one can't just pass in a new Auto (right!?). Examples say things like Policy.addAuto(VIN, make, model, etc.) but are all so simple that that looks reasonable. But if this factory method approach falls apart with too many parameters (the entire Auto interface, conceivably) I need a solution. From that point in my thinking, I'm realizing that having a transient reference to an entity is OK. So, maybe it is fine to have a entity created outside of its parent within the aggregate in a transient environment, so maybe it is OK to say something like: auto = AutoFactory.createAuto(); auto.setX auto.setY or if sticking to immutability, AutoBuilder.new().setX().setY().build() and then have it get sorted out when you say Policy.addAuto(auto) This insurance example gets more interesting if you add Events, such as an Accident with its PolicyReports or RepairEstimates...some value objects but most entities that are all really meaningless outside the policy...at least for my simple example. The lifecycle of Policy with its growing hierarchy over time seems the fundamental picture I must draw before really starting to dig in...and it is more the factory concept or how the child entities get built/attached to an aggregate root that I haven't seen a solid example of. I think I'm close. Hope this is clear and not just a repeat FAQ that has answers all over the place.

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