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  • Hibernate Persistence problems with Bean Mapping (Dozer)

    - by BuffaloBuffalo
    I am using Hibernate 3, and having a particular issue when persisting a new Entity which has an association with an existing detached entity. Easiest way to explain this is via code samples. I have two entities, FooEntity and BarEntity, of which a BarEntity can be associated with many FooEntity: @Entity public class FooEntity implements Foo{ @Id private Long id; @ManyToOne(targetEntity = BarEntity.class) @JoinColumn(name = "bar_id", referencedColumnName = "id") @Cascade(value={CascadeType.ALL}) private Bar bar; } @Entity public class BarEntity implements Bar{ @Id private Long id; @OneToMany(mappedBy = "bar", targetEntity = FooEntity.class) private Set<Foo> foos; } Foo and Bar are interfaces that loosely define getters for the various fields. There are corresponding FooImpl and BarImpl classes that are essentially just the entity objects without the annotations. What I am trying to do is construct a new instance of FooImpl, and persist it after setting a number of fields. The new Foo instance will have its 'bar' member set to an existing Bar (runtime being a BarEntity) from the database (retrieved via session.get(..)). After the FooImpl has all of its properties set, Apache Dozer is used to map between the 'domain' object FooImpl and the Entity FooEntity. What Dozer is doing in the background is instantiating a new FooEntity and setting all of the matching fields. BarEntity is cloned as well via instantiation and set the FooEntity's 'bar' member. After this occurs, passing the new FooEntity object to persist. This throws the exception: org.hibernate.PersistentObjectException: detached entity passed to persist: com.company.entity.BarEntity Below is in code the steps that are occurring FooImpl foo = new FooImpl(); //returns at runtime a persistent BarEntity through session.get() Bar bar = BarService.getBar(1L); foo.setBar(bar); ... //This constructs a new instance of FooEntity, with a member 'bar' which itself is a new instance that is detached) FooEntity entityToPersist = dozerMapper.map(foo, FooEntity.class); ... session.persist(entityToPersist); I have been able to resolve this issue by either removing or changing the @Cascade annotation, but that limits future use for say adding a new Foo with a new Bar attached to it already. Is there some solution here I am missing? I would be surprised if this issue hasn't been solved somewhere before, either by altering how Dozer Maps the children of Foo or how Hibernate reacts to a detached Child Entity.

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  • How to query across many-to-many association in NHibernate?

    - by Splash
    I have two entities, Post and Tag. The Post entity has a collection of Tags which represents a many-to-many join between the two (that is, each post can have any number of tags and each tag can be associated with any number of posts). I am trying to retrieve all Posts which have a given tag. However, I seem to be unable to get this query right. I essentially want something which means the same as the following pseudo-HQL: from Posts p where p.Tags contains (from Tags t where t.Name = :tagName) order by p.DateTime The only thing I've found which even approaches this is a post by Ayende. However, his approach requires the entity on the other side (in my case, Tag) to have a collection showing the other end of the many-to-many. I don't have this and don't really wish to have it. I find it hard to believe this can't be done. What am I missing? My entities & mappings look like this (simplified): public class Post { public virtual int Id { get; set; } public virtual string Title { get; set; } private IList<Tag> tags = new List<Tag>(); public virtual IEnumerable<Tag> Tags { get { return tags; } } public virtual void AddTag(Tag tag) { this.tags.Add(tag); } } public class PostMap : ClassMap<Post> { public PostMap() { Id(x => x.Id).GeneratedBy.HiLo("99"); Map(x => x.Title); HasManyToMany(x => x.Tags); } } // ---- public class Tag { public virtual int Id { get; set; } public virtual string Name { get; set; } } public class TagMap : ClassMap<Tag> { public TagMap () { Id(x => x.Id).GeneratedBy.HiLo("99"); Map(x => x.Name).Unique(); } }

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  • django display m2m elements in a template

    - by dana
    if a have a declaration like theclass = Classroom.objects.get(classname = classname) members = theclass.members.all() and i want to display all the members(of a class) in a template, how should i do it?? if i write: {{theclass.members.all}} the output is an empty list(though the class has some members) How should the elements of a m2m table be displayed in a template? thanks!

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  • How to debug iPhone project crash when there is no error message

    - by teepusink
    Hi, I am doing this iPhone app that works fine on the simulator. However, when I run it on a device in debug mode, it just crash without any error messages. How can I debug that? I heard about a flag we can set to help with this kind of situation but not sure what that flag is and how to set it. If I'm not mistaken I think what that flag does is put a break point automatically prior to crash. Thanks, Tee

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  • Image Source In ControlTemplate WPF

    - by Asim Sajjad
    I have a ControlTemplate which is for the Button control, in the ControlTemplate I have Image control which is used to displayed in the button, Now I want to set the Image Source at runt time as I have to copy paste the ControlTemplate for each of the button to set new image for new button. Thanks in advance.

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  • rDNS for SMTP server locally with Mail hosted by third party

    - by Zleviticus
    Ok We have a difference of opinion on something and wanted to get some expert advice. We host our mail with our main domain "OurDomain.net" with a third part mail provider. We have an in house application that has to be able to send mail out to our clients. The problem is that sometimes the mail is flaky and will stop users from functioning in the program for 30 sec or more and appears to lock up. We have determined that the issue is with the mail piece. One solution is to use Database mail to queue up outbound emails to send out. The other is to set up an intenal SMTP server and send out mail through it. My fear is that we wil not be able to get rDNS to work properly and most of the mail will be blocked by our various client spam filters. Is it possible to set up the DNS for the servers so that we can send mail out like [email protected] using the smtp server in house and still pass the rDNS parameters that are normally set on spam filters? enquiring minds want to know.

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  • Django @ Google App Engine - Site Map Framework

    - by dkp
    Hi Folks, has anybody managed to get Djangos site map framework to run on Google App Engine? I receive the following exception: ImproperlyConfigured at /sitemap.xml You haven't set the DATABASE_ENGINE setting yet. Request Method: GET Request URL: http://127.0.0.1:8080/sitemap.xml Exception Type: ImproperlyConfigured Exception Value: You haven't set the DATABASE_ENGINE setting yet. Exception Location: D:\Program Files\Google\google_appengine\lib\django\django\db\backends\dummy\base.py in complain, line 13

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  • github repos cloning, but no tags/branches recreated??!!

    - by deepblue
    I've been cloning a few repos from github that, even though I know they have branches/tags, do not have them once I clone them onto my local drive. strage. I try to list the tags (git tag) but nothing comes up... I would look into .git/refs/tags/ and that too is empty. the repos in question are: http://github.com/jchris/hovercraft.git http://github.com/apache/couchdb.git any ideas? I really need specific tags/branches, and not the HEAD of the master

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  • 'EXC_BAD_ACCESS' When trying to access a variable?

    - by Nick Brooks
    I get an 'EXC_BAD_ACCESS' error when trying to access variable in a function other than the one it was set in: NSLog(@"Commening search (%@)",sessionID); // This causes it The variable is set in the 'awakeFromNib' function: //Retrieve Session-ID sessionID = [self getSessionID]; The variable itself is defined in the header: NSString *sessionID;

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  • Haskell Add Function Return to List Until Certain Length

    - by kienjakenobi
    I want to write a function which takes a list and constructs a subset of that list of a certain length based on the output of a function. If I were simply interested in the first 50 elements of the sorted list xs, then I would use fst (splitAt 50 (sort xs)). However, the problem is that elements in my list rely on other elements in the same list. If I choose element p, then I MUST also choose elements q and r, even if they are not in the first 50 elements of my list. I am using a function finderFunc which takes an element a from the list xs and returns a list with the element a and all of its required elements. finderFunc works fine. Now, the challenge is to write a function which builds a list whose total length is 50 based on multiple outputs of finderFunc. Here is my attempt at this: finish :: [a] -> [a] -> [a] --This is the base case, which adds nothing to the final list finish [] fs = [] --The function is recursive, so the fs variable is necessary so that finish -- can forward the incomplete list to itself. finish ps fs -- If the final list fs is too small, add elements to it | length fs < 50 && length (fs ++ newrs) <= 50 = fs ++ finish newps newrs -- If the length is met, then add nothing to the list and quit | length fs >= 50 = finish [] fs -- These guard statements are currently lacking, not the main problem | otherwise = finish [] fs where --Sort the candidate list sortedps = sort ps --(finderFunc a) returns a list of type [a] containing a and all the -- elements which are required to go with it. This is the interesting -- bit. rs is also a subset of the candidate list ps. rs = finderFunc (head sortedps) --Remove those elements which are already in the final list, because -- there can be overlap newrs = filter (`notElem` fs) rs --Remove the elements we will add to the list from the new list -- of candidates newps = filter (`notElem` rs) ps I realize that the above if statements will, in some cases, not give me a list of exactly 50 elements. This is not the main problem, right now. The problem is that my function finish does not work at all as I would expect it to. Not only does it produce duplicate elements in the output list, but it sometimes goes far above the total number of elements I want to have in the list. The way this is written, I usually call it with an empty list, such as: finish xs [], so that the list it builds on starts as an empty list.

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  • UISearchBar Not appearing

    - by joec
    Hi I have view controller, into the view i have put a table view, and a search bar into the table's header... the search bar is not showing up, just the empty table view. Do i need to do something additional? I'm pretty sure its to do with the view outlet of the UIViewController, set to View... Thanks

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  • GreaseMonkey + Ajax + Remember page?

    - by acidzombie24
    I load jquery into my greasemonkey script and when the user clicks the start button the script makes a bunch of ajax calls. I then empty body and append data. When i click on something and hit back instead of getting the page post script i lose all the data and need to run the ajax calls again (it can take seconds to run). How do i make it not lose the changes?

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  • Asterisk with new functions

    - by MhdAboAhmad
    hi all , please need help for an asterisk I created a write func odbc list records files in sql table: [R] dsn=connector write=INSERT INTO ast_records (filename,caller,callee,dtime) VALUES ('${ARG1}','${ARG2}','${ARG3}','${ARG4}') prefix=M and set it in dialplan : exten = _0X.,n,Set( M_R(${MIXMONITOR_FILENAME}\,${CUSER}\,${EXTEN}\,${DTIME})= ) when I excute it I get an error : ast_func_write: M_R Function not registered:

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  • Dynamically startup form

    - by comii
    Hi! I have application in VB.net that have two different form (Form1 and Form2). Now I need to examine some condition and if condition is true then i set Form1 for startup for and if it not then i set Form2 for startup form. So is there anyway to dynamically call startup form? Thanks!

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  • UITableViewCell similar to one in "Things" app

    - by Fiedorowski
    Hi im looking (but cant find) for sample app that will show me how to implement UITableView with custom UITableViewCell that is similar to one in the Things app, with smooth animation from read-only view (that hides empty cells) to editable view that shows only cells that can be edited, and custom cell with multiline input with small image. I would appreciate if someone could point me in the right direction. Im new to Cocoa/Objective-C programming but Im familiar with Object Oriented programing concepts.

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  • Android: ListAdapter populating image (icon) source

    - by user117701
    I'm populating a list from the DB, and i have a image field in the DB which contains a URL to a image file. ListAdapter adapter=new SimpleCursorAdapter(this, R.layout.row, constantsCursor, new String[] {"title", "subtitle", "image"}, new int[] {R.id.value, R.id.title, R.id.icon}); However, the other fields are populated, but the image remains empty. Why?

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  • Java, let CookieHandler work on only one instance.

    - by user435657
    Hi all, I don't know how CookieHandler works system wide, I did view the source of CookieHandler but found no more information except the get/set methods. Where do TCP/HTTP connections use instance of CookieHandler, which I set by CookieHandler.setDefault(...) Which source file I should refer to? URLConnection & HttpURLConnection don't seem have things to do with it. Help, thanks in advance.

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  • Setting `axes.linewidth` without changing the `rcParams` global dict

    - by mlvljr
    So, it seems one cannot do the following (it raises an error, since axes does not have a set_linewidth method): axes_style = {'linewidth':5} axes_rect = [0.1, 0.1, 0.9, 0.9] axes(axes_rect, **axes_style) and has to use the following old trick instead: rcParams['axes.linewidth'] = 5 # set the value globally ... # some code rcdefaults() # restore [global] defaults Is there an easy / clean way (may be one can set x- and y- axes parameters individually, etc)? P.S. If no, why?

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  • vbsript and excel delete all worksheets except last one

    - by matthew moore
    I am trying to delete all worksheet in excel exept last one and save it then move its location. I can not get it took work as it deletes all other worksheets but errors out with and out of range error. Set objExcel = CreateObject("Excel.Application") objExcel.Visible = True objExcel.DisplayAlerts = False Set objWorkbook = objExcel.Workbooks.Open("C:\M-tek 10-31-12_Tony.xlsx") i = objWorkbook.Worksheets.Count Do while i = i i = i - 1 objWorkbook.Worksheets(i).Delete Loop

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  • Why is there the need for browser resets?

    - by viatropos
    Okay that's probably not the best title, I know why we need browser resets: because browsers have different defaults set. My question that was too long to put into a title is: If everyone needs to use a reset stylesheet 90% of the time, why do browsers need to set default styles? We're just going to remove them anyways, right?

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  • WPF How to add and perform events on those controls generated during Runtime

    - by 103318677739703278524
    For example, I have an empty tabControl in my Windows during the compile time, and I have an undetermined amount of images need to be added onto the tabControl, so I used loop + tabControl.Children.Add("image1 to x") to add those images... but after that during runtime, I want to perform events on those image controls, such as dragging the image from the tabControl to another Panel. Is it possible to do so? If it's possible, how?

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