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  • java: <identifier> expected with ArrayList

    - by A-moc
    I have a class named Storage. Storage contains an arraylist of special objects called Products. Each product contains information such as name, price, etc. My code is as follows: class Storage{ Product sprite = new Product("sprite",1.25,30); Product pepsi = new Product("pepsi",1.85,45); Product orange = new Product("orange",2.25,36); Product hershey = new Product("hershey",1.50,33); Product brownie = new Product("brownie",2.30,41); Product apple = new Product("apple",2.00,15); Product crackers = new Product("peanut",3.90,68); Product trailmix = new Product("trailmix",1.90,45); Product icecream = new Product("icecream",1.65,28); Product doughnut = new Product("doughnut",2.75,18); Product banana = new Product("banana",1.25,32); Product coffee = new Product("coffee",1.30,40); Product chips = new Product("chips",1.70,35); ArrayList<Product> arl = new ArrayList<Product>(); //add initial elements to arraylist arl.add(sprite); arl.add(pepsi); arl.add(orange); arl.add(hershey); arl.add(brownie); arl.add(apple); arl.add(peanut); arl.add(trailmix); arl.add(icecream); arl.add(doughnut); arl.add(banana); arl.add(coffee); arl.add(chips); } Whenever I compile, I get an error message on lines 141-153 stating <identifier> expected. I know it's an elementary problem, but I can't seem to figure this out. Any help is much appreciated.

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  • Sizers... - wxPython

    - by Francisco Aleixo
    Ok, so I'm learning about sizers in wxPython and I was wondering if it was possible to do something like: ============================================== |WINDOW TITLE _ [] X| |============================================| |xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxxxxxNOTEBOOKxxxxxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx| |________ ___________| |IMAGE | |LoginForm | |________| |___________| ============================================== NOTE:Yeah, I literally got this from http://stackoverflow.com/questions/1892110/wxpython-picking-the-right-sizer-to-use-in-an-application With NOTEBOOK expanded to left and bottom, IMAGE to align to left and bottom and loginform align to right and bottom and I managed to do almost everything but now I have a problem.. The problem is that I can't align Loginform and Image separately (im using Box Sizers), and I would like to. This is the code I'm using that is causing the problem at the moment, any help is appreciated. NOTE:The code might be (HUGELY) sloppy as I'm still learning box sizers. sizer = wx.BoxSizer(wx.VERTICAL) sizer1 = wx.BoxSizer(wx.HORIZONTAL) sizer1.Add(self.nb,1, wx.EXPAND) sizer.Add(sizer1,1, wx.LEFT | wx.RIGHT | wx.EXPAND, 10) sizer.Add((-1, 25)) sizer2 = wx.BoxSizer(wx.VERTICAL) sizer2.Add(self.userLabel, 0) sizer2.Add(self.userText, 0) sizer2.Add(self.pwdLabel, 0) sizer2.Add(self.pwdText, 0) sizer2.Add(self.rem, 0) sizer3 = wx.BoxSizer(wx.HORIZONTAL) sizer3.Add(self.login, 0) sizer3.Add(self.sair,0, wx.LEFT, 5) sizer2.Add(sizer3, 0) sizer4 = wx.BoxSizer(wx.HORIZONTAL) sizer4.Add(image, 1, wx.LEFT | wx.BOTTOM) sizer4.Add(sizer2,0, wx.RIGHT | wx.BOTTOM , 5) sizer.Add(sizer4,0, wx.ALIGN_RIGHT | wx.RIGHT, 10)

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  • How to remove all ListBox items?

    - by Nano HE
    Hi, I created two RadioButton (Weight and Height). I will do switch between the two categories. But the they share the same ListBox Controllers (listBox1 and listBox2). Is there any good method to clear all the ListBox items simpler? I didn't find the removeAll() for ListBox. I don't like my complex multi-lines style which I posted here. private void Weight_Click(object sender, RoutedEventArgs e) { // switch between the radioButton "Weith" and "Height" // Clear all the items first listBox1.Items.Remove("foot"); listBox1.Items.Remove("inch"); listBox1.Items.Remove("meter"); listBox2.Items.Remove("foot"); listBox2.Items.Remove("inch"); listBox2.Items.Remove("meter"); // Add source units items for listBox1 listBox1.Items.Add("kilogram"); listBox1.Items.Add("pound"); // Add target units items for listBox2 listBox2.Items.Add("kilogram"); listBox2.Items.Add("pound"); } private void Height_Click(object sender, RoutedEventArgs e) { // switch between the radioButton "Weith" and "Height" // Clear all the items first listBox1.Items.Remove("kilogram"); listBox1.Items.Remove("pound"); listBox2.Items.Remove("kilogram"); listBox2.Items.Remove("pound"); // Add source units items for listBox1 listBox1.Items.Add("foot"); listBox1.Items.Add("inch"); listBox1.Items.Add("meter"); // Add target units items for listBox2 listBox2.Items.Add("foot"); listBox2.Items.Add("inch"); listBox2.Items.Add("meter"); }

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  • How can I test for an empty Breeze predicate?

    - by Megan
    I'm using Breeze to filter data requested on the client. My code looks a little like this: Client - Creating Filter Predicate var predicates = []; var criteriaPredicate = null; $.each(selectedFilterCriteria(), function (index, item) { criteriaPredicate = (index == 0) ? breeze.Predicate.create('criteriaId', breeze.FilterQueryOp.Equals, item) : criteriaPredicate.or('criteriaId', breeze.FilterQueryOp.Equals, item); if (breeze.Predicate.isPredicate(criteriaPredicate)) { predicates.push(criteriaPredicate); } // Repeat for X Filter Criteria var filter = breeze.Predicate.and(predicates); return context.getAll(filter, data); Client - Context Query function getAll(predicate, dataObservable) { var query = breeze.EntityQuery.from('Data'); if (breeze.Predicate.isPredicate(predicate)) { query = query.where(predicate); } return manager.executeQuery(query).then(success).fail(failure); } Issue I'm having an issue with the request because, if there are no filters set, I apply an "empty" predicate (due to the var filter = breeze.Predicate.and([]) line) resulting in a request like http://mysite/api/app/Data?$filter=. The request is an invalid OData query since the value of the $filter argument cannot be empty. Is there a good way for me to check for an empty predicate? I know I can refactor my client code to not use a predicate unless there is at least one filterable item, but I thought I would check first to see if I overlooked some property or method on the Breeze Predicate.

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  • How can I refactor this to work without breaking the pattern horribly?

    - by SnOrfus
    I've got a base class object that is used for filtering. It's a template method object that looks something like this. public class Filter { public void Process(User u, GeoRegion r, int countNeeded) { List<account> selected = this.Select(u, r, countNeeded); // 1 List<account> filtered = this.Filter(selected, u, r, countNeeded); // 2 if (filtered.Count > 0) { /* do businessy stuff */ } // 3 if (filtered.Count < countNeeded) this.SendToSuccessor(u, r, countNeeded - filtered) // 4 } } Select(...), Filter(...) are protected abstract methods and implemented by the derived classes. Select(...) finds objects in the based on x criteria, Filter(...) filters those selected further. If the remaining filtered collection has more than 1 object in it, we do some business stuff with it (unimportant to the problem here). SendToSuccessor(...) is called if there weren't enough objects found after filtering (it's a composite where the next class in succession will also be derived from Filter but have different filtering criteria) All has been ok, but now I'm building another set of filters, which I was going to subclass from this. The filters I'm building however would require different params and I don't want to just implement those methods and not use the params or just add to the param list the ones I need and have them not used in the existing filters. They still perform the same logical process though. I also don't want to complicated the consumer code for this (which looks like this) Filter f = new Filter1(); Filter f2 = new Filter2(); Filter f3 = new Filter3(); f.Sucessor = f2; f2.Sucessor = f3; /* and so on adding filters as successors to previous ones */ foreach (User u in users) { foreach (GeoRegion r in regions) { f.Process(u, r, ##); } } How should I go about it?

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  • Iterating through items of CompositeCollection

    - by Dudu
    Consider the code: ObservableCollection<string> cities = new ObservableCollection<string>(); ObservableCollection<string> states = new ObservableCollection<string>(); ListBox list; cities.Add("Frederick"); cities.Add("Germantown"); cities.Add("Arlington"); cities.Add("Burbank"); cities.Add("Newton"); cities.Add("Watertown"); cities.Add("Pasadena"); states.Add("Maryland"); states.Add("Virginia"); states.Add("California"); states.Add("Nevada"); states.Add("Ohio"); CompositeCollection cmpc = new CompositeCollection(); CollectionContainer cc1 = new CollectionContainer(); cc1.Collection = cities; CollectionContainer cc2 = new CollectionContainer(); cc2.Collection = states; cmpc.Add(cc1); cmpc.Add(cc2); list.ItemsSource = cmpc; foreach(var itm in cmpc ) { // itm is CollectionContainer and there are only two itm’s // I need the strings } While list shows the right data on the GUI I need this data (without referring to the ListBox) and I am not getting it

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  • How to add locale aware CSS to an individual component in ADF Faces.

    - by [email protected]
    When creating a skin in ADF Faces, it's (relatively) easy to add locale aware CSS using the :rtl psuedo-class on the end of a skinning key.  Example:af|inputListOfValues::content {  padding-left: 3px;}af|inputListOfValues::content:rtl {  padding-left: 0px;  padding-right: 3px;}In this example, we want some padding before the start of the text in the content element of the component.  In right to left locales, the start of the text is on the right side by default, so we need to change the padding from the left to the right.Let's say, however, that you want to specify a locale aware CSS style on an individual component using the contentStyle attribute.  There is a handy ADF Faces EL function to help you out here: isRTL.  For our example, let's say we want an inputText component whose text content is 'end' aligned.  If you weren't considering RTL locales, you could code this as:<af:inputText id="idInputTextRight" label="right aligned" value="Test"                    contentStyle="text-align: right;"/>This, however, will be right aligned regardless of locale. This is where isRTL() comes to the rescue.  This is how we would code this to be locale aware:<af:inputText id="idInputTextEnd" label="end aligned" value="Test"                     contentStyle="text-align: #{af:isRTL()?'left':'right'};"/> The af:isRTL() EL function returns true if we are rendering in RTL, so we can use it to pick the appropriate text alignment.

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  • How do I add and/or keep subtitles when converting video?

    - by JoeSteiger
    I have a mkv video I want to convert to mp4, but every which way I try and convert it (Handbrake, WinFF, ffmpeg, mencoder,...I lose the video's subtitles. How can I convert the video,keeping the subtitles, or add a subtitles.srt? I also would like 2 pass encoding with a video bitrate of 4054 and audio bitrate of 160. Thanks. I was asked for the ffmpeg -i: joe@joe-Leopard-Extreme:/media/Elements/Home Folder/Videos$ ffmpeg -i iron.mkv ffmpeg version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers built on Jun 12 2012 16:52:09 with gcc 4.6.3 *** THIS PROGRAM IS DEPRECATED *** This program is only provided for compatibility and will be removed in a future release. Please use avconv instead. [matroska,webm @ 0x1a319a0] Estimating duration from bitrate, this may be inaccurate Input #0, matroska,webm, from 'iron.mkv': Metadata: title : Iron Duration: 02:06:01.67, start: 0.000000, bitrate: 1280 kb/s Chapter #0.0: start 0.000000, end 546.170622 Metadata: title : Chapter 00 Chapter #0.1: start 546.170622, end 1080.579489 Metadata: title : Chapter 01 Chapter #0.2: start 1080.579489, end 1609.941667 Metadata: title : Chapter 02 Chapter #0.3: start 1609.941667, end 2101.849733 Metadata: title : Chapter 03 Chapter #0.4: start 2101.849733, end 2595.259333 Metadata: title : Chapter 04 Chapter #0.5: start 2595.259333, end 3158.488667 Metadata: title : Chapter 05 Chapter #0.6: start 3158.488667, end 3564.644400 Metadata: title : Chapter 06 Chapter #0.7: start 3564.644400, end 4052.423356 Metadata: title : Chapter 07 Chapter #0.8: start 4052.423356, end 4304.300000 Metadata: title : Chapter 08 Chapter #0.9: start 4304.300000, end 4711.206489 Metadata: title : Chapter 09 Chapter #0.10: start 4711.206489, end 5080.575489 Metadata: title : Chapter 10 Chapter #0.11: start 5080.575489, end 5700.111067 Metadata: title : Chapter 11 Chapter #0.12: start 5700.111067, end 6269.346400 Metadata: title : Chapter 12 Chapter #0.13: start 6269.346400, end 6811.471333 Metadata: title : Chapter 13 Chapter #0.14: start 6811.471333, end 7561.679000 Metadata: title : Chapter 14 Stream #0.0(eng): Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, s16, 640 kb/s (default) Metadata: title : 3/2+1 Stream #0.2(ita): Audio: ac3, 48000 Hz, 5.1, s16, 640 kb/s Metadata: title : 3/2+1 Stream #0.3(eng): Subtitle: pgssub (default) Stream #0.4(eng): Subtitle: pgssub Stream #0.5(eng): Subtitle: pgssub Stream #0.6(eng): Subtitle: pgssub At least one output file must be specified joe@joe-Leopard-Extreme:/media/Elements/Home Folder/Videos

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  • Is there a way to add unique items to an array without doing a ton of comparisons?

    - by hydroparadise
    Please bare with me, I want this to be as language agnostic as possible becuase of the languages I am working with (One of which is a language called PowerOn). However, most languanges support for loops and arrays. Say I have the following list in an aray: 0x 0 Foo 1x 1 Bar 2x 0 Widget 3x 1 Whatsit 4x 0 Foo 5x 1 Bar Anything with a 1 should be uniqely added to another array with the following result: 0x 1 Bar 1x 1 Whatsit Keep in mind this is a very elementry example. In reality, I am dealing with 10's of thousands of elements on the old list. Here is what I have so far. Pseudo Code: For each element in oldlist For each element in newlist Compare If values oldlist.element equals newlist.element, break new list loop If reached end of newlist with with nothing equal from oldlist, add value from old list to new list End End Is there a better way of doing this? Algorithmicly, is there any room for improvement? And as a bonus qeustion, what is the O notation for this type of algorithm (if there is one)?

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  • Did 12.04 just add multi-touch gesture support mid-release?

    - by adempewolff
    I was reviewing the updates I was about to download today and I noticed that a lot of them had to do with gesture support, noticed that many of these were new installs rather than upgrades. Has 12.04 just added multi-touch gesture support mid-release? If so, what are the capabilities that this adds? Which applications already support these capabilities and can I expect others to add support in the near future? Here are the packages that were installed: Install: libframe6:amd64 (2.2.4-0ubuntu0.12.04.1), libgeis1:amd64 (2.2.9.2-0ubuntu1), libgrail5:amd64 (3.0.6-0ubuntu0.12.04.01, automatic) And here are those that were upgraded (also including many with touch support): Upgrade: libgrip0:amd64 (0.3.4-0ubuntu2~ubuntu12.04.1, 0.3.5-0ubuntu1~12.04.1), eog:amd64 (3.4.2-0ubuntu1, 3.4.2-0ubuntu1.1), ginn:amd64 (0.2.4-0ubuntu1, 0.2.4.1-0ubuntu1) Of which the descriptions for the new installs are, libgeis1: Gesture engine interface support A common API for clients of a systemwide gesture recognition and propagation engine. libframe6: Touch Frame Library This library handles the buildup and synchronization of a set of simultaneous touches. The library is input agnostic, with bindings for mtdev, frame and XI2.1. libgrail5: Gesture Recognition And Instantiation Library This library consists of an interface and tools for handling gesture recognition and gesture instantiation. Applications can use the grail callbacks to receive gesture primitives and raw input events from the underlying kernel device. And the descriptions for the upgraded packages are, ligrip0: provides multitouch gestures to GTK+ apps Libgrip hooks gesture recognition into GTK+ applications. ginn: Gesture Injector: No-GEIS, No-Toolkits A daemon with jinn-like wish-granting capabilities: it gives applications the ability to support a subset of multi-touch gestures without having to integrate GEIS or multi-touch GTK/Qt libs. Adding in a ton of new libraries and upgrading the existing components makes me wonder if 12.04 is meant to start natively supporting gestures other than two finger scroll in the near future. I expected these capabilities to be introduced soon but I thought that they would only be rolled out in a new release, not as upgrades for an existing release. Anyone have any info about this?

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  • Where is it permissible to add logging code in a MVC model?

    - by BDotA
    Working on a C# WinForms program that is written in a MVC ( actually Model-View-Presenter) style and I want to add a few lines of code that is responsible for logging some events. Where should I write two or three lines of code that I need? Should I write it in the Presenter section? To get an idea, here is some lines of sample code that already exists in the Save() metohd in Company.MyApplication.Presenter.MyPresenter.cs class: he has written codes lie the following in this part of presenter: private void Save(Helper.SaveStatusEnum status) { if (notification.CheckLocks(orderIdCollection)) { using (new HourglassController()) { controller.FireActiveCellLeaving(); ViewDocumentedValues(); int result = saveController.Save(status); if (result == Helper.SAVE_SUCCESSFUL) { // IS IT OK TO WRITE MY COUPLE LINES OF CODE IN HERE??????????? model.Dirty = false; if ((model.CurrentStatus == Helper.OrderStatusEnum.Complete) || (model.CurrentStatus == Helper.OrderStatusEnum.Corrected)) { controller.EnableDisableSheet(false); } CheckApplicationState(); SheetHelper.ClearUnsavedDataRowImage(view.ActiveSheet); } else { MessageBox.Show("An unexpected error occuring trying to save."); } } } }

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  • Is there a secure way to add a database troubleshooting page to an application?

    - by Josh Yeager
    My team makes a product (business management software) that our customers install on their own servers. The product uses a SQL database for data storage and app configuration. There have been quite a few cases where something strange happened in the customer's database (caused by bugs in our app and also sometimes admins who mess with the database). To figure out what is wrong with the data, we have to send SQL scripts to the customer and tell them how to run them on the database server. Then, once we know how to fix it, we have to send another script to repair the data. Is there a secure way to add a page in our application that allows an application admin to enter SQL scripts that read and write directly to the database? Our support team could use that to help customers run these scripts, without needing direct access to the SQL server. My big concerns are that someone might abuse this power to get data they shouldn't have and maybe to erase or modify data that they shouldn't be able to modify. I'm not worried about system admins, because they could find another way to do the same thing. But what if someone else got access to the form? Is there any way to do this kind of thing securely?

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  • How to add precedence to LALR parser like in YACC?

    - by greenoldman
    Please note, I am asking about writing LALR parser, not writing rules for LALR parser. What I need is... ...to mimic YACC precedence definitions. I don't know how it is implemented, and below I describe what I've done and read so far. For now I have basic LALR parser written. Next step -- adding precedence, so 2+3*4 could be parsed as 2+(3*4). I've read about precedence parsers, however I don't see how to fit such model into LALR. I don't understand two points: how to compute when insert parenthesis generator how to compute how many parenthesis the generator should create I insert generators when the symbols is taken from input and put at the stack, right? So let's say I have something like this (| denotes boundary between stack and input): ID = 5 | + ..., at this point I add open, so it gives ID = < 5 | + ..., then I read more input ID = < 5 + | 5 ... and more ID = < 5 + 5 | ; ... and more ID = < 5 + 5 ; | ... At this point I should have several reduce moves in normal LALR, but the open parenthesis does not match so I continue reading more input. Which does not make sense. So this was when problem. And about count, let's say I have such data < 2 + < 3 * 4 >. As human I can see that the last generator should create 2 parenthesis, but how to compute this? After all there could be two scenarios: ( 2 + ( 3 *4 )) -- parenthesis is used to show the outcome of generator or (2 + (( 3 * 4 ) ^ 5) because there was more input Please note that in both cases before 3 was open generator, and after 4 there was close generator. However in both cases, after reading 4 I have to reduce, so I have to know what generator "creates".

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  • Query optimization using composite indexes

    - by xmarch
    Many times, during the process of creating a new Coherence application, developers do not pay attention to the way cache queries are constructed; they only check that these queries comply with functional specs. Later, performance testing shows that these perform poorly and it is then when developers start working on improvements until the non-functional performance requirements are met. This post describes the optimization process of a real-life scenario, where using a composite attribute index has brought a radical improvement in query execution times.  The execution times went down from 4 seconds to 2 milliseconds! E-commerce solution based on Oracle ATG – Endeca In the context of a new e-commerce solution based on Oracle ATG – Endeca, Oracle Coherence has been used to calculate and store SKU prices. In this architecture, a Coherence cache stores the final SKU prices used for Endeca baseline indexing. Each SKU price is calculated from a base SKU price and a series of calculations based on information from corporate global discounts. Corporate global discounts information is stored in an auxiliary Coherence cache with over 800.000 entries. In particular, to obtain each price the process needs to execute six queries over the global discount cache. After the implementation was finished, we discovered that the most expensive steps in the price calculation discount process were the global discounts cache query. This query has 10 parameters and is executed 6 times for each SKU price calculation. The steps taken to optimise this query are described below; Starting point Initial query was: String filter = "levelId = :iLevelId AND  salesCompanyId = :iSalesCompanyId AND salesChannelId = :iSalesChannelId "+ "AND departmentId = :iDepartmentId AND familyId = :iFamilyId AND brand = :iBrand AND manufacturer = :iManufacturer "+ "AND areaId = :iAreaId AND endDate >=  :iEndDate AND startDate <= :iStartDate"; Map<String, Object> params = new HashMap<String, Object>(10); // Fill all parameters. params.put("iLevelId", xxxx); // Executing filter. Filter globalDiscountsFilter = QueryHelper.createFilter(filter, params); NamedCache globalDiscountsCache = CacheFactory.getCache(CacheConstants.GLOBAL_DISCOUNTS_CACHE_NAME); Set applicableDiscounts = globalDiscountsCache.entrySet(globalDiscountsFilter); With the small dataset used for development the cache queries performed very well. However, when carrying out performance testing with a real-world sample size of 800,000 entries, each query execution was taking more than 4 seconds. First round of optimizations The first optimisation step was the creation of separate Coherence index for each of the 10 attributes used by the filter. This avoided object deserialization while executing the query. Each index was created as follows: globalDiscountsCache.addIndex(new ReflectionExtractor("getXXX" ) , false, null); After adding these indexes the query execution time was reduced to between 450 ms and 1s. However, these execution times were still not good enough.  Second round of optimizations In this optimisation phase a Coherence query explain plan was used to identify how many entires each index reduced the results set by, along with the cost in ms of executing that part of the query. Though the explain plan showed that all the indexes for the query were being used, it also showed that the ordering of the query parameters was "sub-optimal".  Parameters associated to object attributes with high-cardinality should appear at the beginning of the filter, or more specifically, the attributes that filters out the highest of number records should be placed at the beginning. But examining corporate global discount data we realized that depending on the values of the parameters used in the query the “good” order for the attributes was different. In particular, if the attributes brand and family had specific values it was more optimal to have a different query changing the order of the attributes. Ultimately, we ended up with three different optimal variants of the query that were used in its relevant cases: String filter = "brand = :iBrand AND familyId = :iFamilyId AND departmentId = :iDepartmentId AND levelId = :iLevelId "+ "AND manufacturer = :iManufacturer AND endDate >= :iEndDate AND salesCompanyId = :iSalesCompanyId "+ "AND areaId = :iAreaId AND salesChannelId = :iSalesChannelId AND startDate <= :iStartDate"; String filter = "familyId = :iFamilyId AND departmentId = :iDepartmentId AND levelId = :iLevelId AND brand = :iBrand "+ "AND manufacturer = :iManufacturer AND endDate >=  :iEndDate AND salesCompanyId = :iSalesCompanyId "+ "AND areaId = :iAreaId  AND salesChannelId = :iSalesChannelId AND startDate <= :iStartDate"; String filter = "brand = :iBrand AND departmentId = :iDepartmentId AND familyId = :iFamilyId AND levelId = :iLevelId "+ "AND manufacturer = :iManufacturer AND endDate >= :iEndDate AND salesCompanyId = :iSalesCompanyId "+ "AND areaId = :iAreaId AND salesChannelId = :iSalesChannelId AND startDate <= :iStartDate"; Using the appropriate query depending on the value of brand and family parameters the query execution time dropped to between 100 ms and 150 ms. But these these execution times were still not good enough and the solution was cumbersome. Third and last round of optimizations The third and final optimization was to introduce a composite index. However, this did mean that it was not possible to use the Coherence Query Language (CohQL), as composite indexes are not currently supporte in CohQL. As the original query had 8 parameters using EqualsFilter, 1 using GreaterEqualsFilter and 1 using LessEqualsFilter, the composite index was built for the 8 attributes using EqualsFilter. The final query had an EqualsFilter for the multiple extractor, a GreaterEqualsFilter and a LessEqualsFilter for the 2 remaining attributes.  All individual indexes were dropped except the ones being used for LessEqualsFilter and GreaterEqualsFilter. We were now running in an scenario with an 8-attributes composite filter and 2 single attribute filters. The composite index created was as follows: ValueExtractor[] ve = { new ReflectionExtractor("getSalesChannelId" ), new ReflectionExtractor("getLevelId" ),    new ReflectionExtractor("getAreaId" ), new ReflectionExtractor("getDepartmentId" ),    new ReflectionExtractor("getFamilyId" ), new ReflectionExtractor("getManufacturer" ),    new ReflectionExtractor("getBrand" ), new ReflectionExtractor("getSalesCompanyId" )}; MultiExtractor me = new MultiExtractor(ve); NamedCache globalDiscountsCache = CacheFactory.getCache(CacheConstants.GLOBAL_DISCOUNTS_CACHE_NAME); globalDiscountsCache.addIndex(me, false, null); And the final query was: ValueExtractor[] ve = { new ReflectionExtractor("getSalesChannelId" ), new ReflectionExtractor("getLevelId" ),    new ReflectionExtractor("getAreaId" ), new ReflectionExtractor("getDepartmentId" ),    new ReflectionExtractor("getFamilyId" ), new ReflectionExtractor("getManufacturer" ),    new ReflectionExtractor("getBrand" ), new ReflectionExtractor("getSalesCompanyId" )}; MultiExtractor me = new MultiExtractor(ve); // Fill composite parameters.String SalesCompanyId = xxxx;...AndFilter composite = new AndFilter(new EqualsFilter(me,                   Arrays.asList(iSalesChannelId, iLevelId, iAreaId, iDepartmentId, iFamilyId, iManufacturer, iBrand, SalesCompanyId)),                                     new GreaterEqualsFilter(new ReflectionExtractor("getEndDate" ), iEndDate)); AndFilter finalFilter = new AndFilter(composite, new LessEqualsFilter(new ReflectionExtractor("getStartDate" ), iStartDate)); NamedCache globalDiscountsCache = CacheFactory.getCache(CacheConstants.GLOBAL_DISCOUNTS_CACHE_NAME); Set applicableDiscounts = globalDiscountsCache.entrySet(finalFilter);      Using this composite index the query improved dramatically and the execution time dropped to between 2 ms and  4 ms.  These execution times completely met the non-functional performance requirements . It should be noticed than when using the composite index the order of the attributes inside the ValueExtractor was not relevant.

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  • How to add display resolution fo an LCD in Ubuntu 12.04? xrandr problem

    - by SeregaI
    I am fresh for Ubuntu and Linux in general. I have installed Ubuntu 12.04 and stuck trying to setup correct resolution for my LCD display. The native resolution for the LCD is 1920x1080 here is the output from xrandr: $xrandr Screen 0: minimum 320 x 200, current 1280 x 720, maximum 4096 x 4096 LVDS1 connected 1280x720+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1280x720 60.0*+ 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) Then I create new modeline: $ cvt 1920 1080 60 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync So far so good. then I create new mode using xrandr: $ xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync But for some reason that new mode was created for VGA (VGA1) output instead of LCD output (LVDS1): $ xrandr Screen 0: minimum 320 x 200, current 1280 x 720, maximum 4096 x 4096 LVDS1 connected 1280x720+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1280x720 60.0*+ 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) 1920x1080_60.00 (0xbc) 173.0MHz <---------- ????!!!!!! h: width 1920 start 2048 end 2248 total 2576 skew 0 clock 67.2KHz v: height 1080 start 1083 end 1088 total 1120 clock 60.0Hz So, if I try to add mode to LVDS1, I get an error: $ xrandr --addmode LVDS1 "1920x1080_60.00" X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 149 (RANDR) Minor opcode of failed request: 18 (RRAddOutputMode) Serial number of failed request: 25 Current serial number in output stream: 26 Adding that new mode to VGA1 works fine, but I don't use that VGA1 output.

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  • A "Trig" Calculating Class

    - by Clinton Scott
    I have been trying to create a gui that calculates trigonometric functions based off of the user's input. I have had success in the GUI part, but my class that I wrote to hold information using inheritance seems to be messed up, because when I run it gives an error saying: Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - constructor ArcTrigCalcCon in class TrigCalc.ArcTrigCalcCon cannot be applied to given types; required: double,double,double,double,double,double found: java.lang.Double,java.lang.Double,java.lang.Double reason: actual and formal argument lists differ in length at TrigCalc.TrigCalcGUI.(TrigCalcGUI.java:31) at TrigCalc.TrigCalcGUI.main(TrigCalcGUI.java:87) Java Result: 1 and says it is the object causing the problem. Below Will be my code. First I will put up my inheritance class with cosecant secant and cotangent and then my original class with the original 3 trig functions: { public ArcTrigCalcCon(double s, double cs, double t, double csc, double sc, double ct) { // Inherit from the Trig Calc class super(s, cs, t); cosecant = 1/s; secant = 1/cs; cotangent = 1/t; } public void setCsc(double csc) { cosecant = csc; } public void setSec(double sc) { secant = sc; } public void setCot(double ct) { cotangent = ct; } } Here is the first Trigonometric class: public class TrigCalcCon { public double sine; public double cosine; public double tangent; public TrigCalcCon(double s, double cs, double t) { sine = s; cosine = cs; tangent = t; } public void setSin(double s) { sine = s; } public void setCos(double cs) { cosine = cs; } public void setTan(double t) { tangent = t; } public void set(double s, double cs, double t) { sine = s; cosine = cs; tangent = t; } public double getSin() { return Math.sin(sine); } public double getCos() { return Math.cos(cosine); } public double getTan() { return Math.tan(tangent); } } and here is the demo class to run the gui: public class TrigCalcGUI extends JFrame implements ActionListener { // Instance Variables private String input; private Double s, cs, t, csc, sc, ct; private JPanel mainPanel, sinPanel, cosPanel, tanPanel, cscPanel, secPanel, cotPanel, buttonPanel, inputPanel, displayPanel; // Panel Display private JLabel sinLabel, cosLabel, tanLabel, secLabel, cscLabel, cotLabel, inputLabel; private JTextField sinTF, cosTF, tanTF, secTF, cscTF, cotTF, inputTF; //Text Fields for sin, cos, and tan, and inverse private JButton calcButton, clearButton; // Calculate and Exit Buttons // Object ArcTrigCalcCon trC = new ArcTrigCalcCon(s, cs, t); public TrigCalcGUI() { // title bar text. super("Trig Calculator"); // Corner exit button action. setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Create main panel to add each panel to mainPanel = new JPanel(); mainPanel.setLayout(new GridLayout(3,2)); displayPanel = new JPanel(); displayPanel.setLayout(new GridLayout(3,2)); // Assign Panel to each variable inputPanel = new JPanel(); sinPanel = new JPanel(); cosPanel = new JPanel(); tanPanel = new JPanel(); cscPanel = new JPanel(); secPanel = new JPanel(); cotPanel = new JPanel(); buttonPanel = new JPanel(); // Call each constructor buildInputPanel(); buildSinCosTanPanels(); buildCscSecCotPanels(); buildButtonPanel(); // Add each panel to content pane displayPanel.add(sinPanel); displayPanel.add(cscPanel); displayPanel.add(cosPanel); displayPanel.add(secPanel); displayPanel.add(tanPanel); displayPanel.add(cotPanel); // Add three content panes to GUI mainPanel.add(inputPanel, BorderLayout.NORTH); mainPanel.add(displayPanel, BorderLayout.CENTER); mainPanel.add(buttonPanel, BorderLayout.SOUTH); //add mainPanel this.add(mainPanel); // size of window to content this.pack(); // display window setVisible(true); } public static void main(String[] args) { new TrigCalcGUI(); } private void buildInputPanel() { inputLabel = new JLabel("Enter a Value: "); inputTF = new JTextField(5); inputPanel.add(inputLabel); inputPanel.add(inputTF); } // Building Constructor for sinPanel cosPanel, and tanPanel private void buildSinCosTanPanels() { // Set layout and border for sinPanel sinPanel.setLayout(new GridLayout(2,2)); sinPanel.setBorder(BorderFactory.createTitledBorder("Sine")); // sinTF = new JTextField(5); sinTF.setEditable(false); sinPanel.add(sinTF); // Set layout and border for cosPanel cosPanel.setLayout(new GridLayout(2,2)); cosPanel.setBorder(BorderFactory.createTitledBorder("Cosine")); cosTF = new JTextField(5); cosTF.setEditable(false); cosPanel.add(cosTF); // Set layout and border for tanPanel tanPanel.setLayout(new GridLayout(2,2)); tanPanel.setBorder(BorderFactory.createTitledBorder("Tangent")); tanTF = new JTextField(5); tanTF.setEditable(false); tanPanel.add(tanTF); } // Building Constructor for cscPanel secPanel, and cotPanel private void buildCscSecCotPanels() { // Set layout and border for cscPanel cscPanel.setLayout(new GridLayout(2,2)); cscPanel.setBorder(BorderFactory.createTitledBorder("Cosecant")); // cscTF = new JTextField(5); cscTF.setEditable(false); cscPanel.add(cscTF); // Set layout and border for secPanel secPanel.setLayout(new GridLayout(2,2)); secPanel.setBorder(BorderFactory.createTitledBorder("Secant")); secTF = new JTextField(5); secTF.setEditable(false); secPanel.add(secTF); // Set layout and border for cotPanel cotPanel.setLayout(new GridLayout(2,2)); cotPanel.setBorder(BorderFactory.createTitledBorder("Cotangent")); cotTF = new JTextField(5); cotTF.setEditable(false); cotPanel.add(cotTF); } private void buildButtonPanel() { // Create buttons and add events calcButton = new JButton("Calculate"); calcButton.addActionListener(new CalcButtonListener()); clearButton = new JButton("Clear"); clearButton.addActionListener(new ClearButtonListener()); buttonPanel.add(calcButton); buttonPanel.add(clearButton); } @Override public void actionPerformed(ActionEvent e) { } private class CalcButtonListener implements ActionListener { public void actionPerformed(ActionEvent ae) { // Declare boolean variable boolean incorrect = true; // Set input variable to input text field text input = inputTF.getText(); ImageIcon newIcon; ImageIcon frowny = new ImageIcon(TrigCalcGUI.class.getResource("/Sad_Face.png")); Image gm = frowny.getImage(); Image newFrowny = gm.getScaledInstance(100, 100, java.awt.Image.SCALE_FAST); newIcon = new ImageIcon(newFrowny); // If boolean is true, throw exception if(incorrect) { try{Double.parseDouble(input); incorrect = false;} catch(NumberFormatException nfe) { String s = "Invalid Input " + "/n Input Must Be a Numerical value." + "/nPlease Press Ok and Try Again"; JOptionPane.showMessageDialog(null, s, "Invalid", JOptionPane.ERROR_MESSAGE, newIcon); inputTF.setText(""); inputTF.requestFocus(); } } // If boolean is not true, proceed with output if (incorrect != true) { /* Set each text field's output to the String double value * of inputTF */ sinTF.setText(input); cosTF.setText(input); tanTF.setText(input); cscTF.setText(input); secTF.setText(input); cotTF.setText(input); } } } /** * Private inner class that handles the event when * the user clicks the Exit button. */ private class ClearButtonListener implements ActionListener { public void actionPerformed(ActionEvent ae) { // Clear field sinTF.setText(""); cosTF.setText(""); tanTF.setText(""); cscTF.setText(""); secTF.setText(""); cotTF.setText(""); // Clear textfield and set cursor focus to field inputTF.setText(""); inputTF.requestFocus(); } } }

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  • How to add Button to WPF Datagrid column dynamically ?

    - by Ramanji
    Hi .. Is there any way to dynamically add a button control(along with column name) to WPFDataGrid column,?? By clicking on header button,pop-up will open . this button generation is dynamic one ,which will be decided from code-behind, for some column headers need to add,for some not needed to add.

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  • netsh add profile returns "An attempt was made to load a program with an incorrect format."

    - by Tunisia
    Using netsh, I used the following command to add a wireless profile add profile filename="c:\profiles\DLINK-Profile.xml" interface="D-Link DWA-125 N150" All parameters are valid. But I get the error "An attempt was made to load a program with an incorrect format." I know this error is related to OS architecture 64bit or 32 bit. But i'm not sure which program is not compatible. I'm using Win7 64bit

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  • ADD COLUMN to sqlite db IF NOT EXISTS - flex/air sqlite?

    - by Adam
    I've got a flex/air app I've been working on, it uses a local sqlite database that is created on the initial application start. I've added some features to the application and in the process I had to add a new field to one of the database tables. My questions is how to I go about getting the application to create one new field that is located in a table that already exists? this is a the line that creates the table stmt.text = "CREATE TABLE IF NOT EXISTS tbl_status ("+"status_id INTEGER PRIMARY KEY AUTOINCREMENT,"+" status_status TEXT)"; And now I'd like to add a status_default field. thanks! Thanks - MPelletier I've add the code you provided and it does add the field, but now the next time I restart my app I get an error - 'status_default' already exists'. So how can I go about adding some sort of a IF NOT EXISTS statement to the line you provided?

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  • How to properly add .NET assemblies to Powershell session?

    - by amandion
    I have a .NET assembly (a dll) which is an API to backup software we use here. It contains some properties and methods I would like to take advantage of in my Powershell script(s). However, I am running into a lot of issues with first loading the assembly, then using any of the types once the assembly is loaded. The complete file path is: C:\rnd\CloudBerry.Backup.API.dll In Powershell I use: $dllpath = "C:\rnd\CloudBerry.Backup.API.dll" Add-Type -Path $dllpath I get the error below: Add-Type : Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. At line:1 char:9 + Add-Type <<<< -Path $dllpath + CategoryInfo : NotSpecified: (:) [Add-Type], ReflectionTypeLoadException + FullyQualifiedErrorId : System.Reflection.ReflectionTypeLoadException,Microsoft.PowerShell.Commands.AddTypeComma ndAdd-Type : Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. Using the same cmdlet on another .NET assembly, DotNetZip, which has examples of using the same functionality on the site also does not work for me. I eventually find that I am seemingly able to load the assembly using reflection: [System.Reflection.Assembly]::LoadFrom($dllpath) Although I don't understand the difference between the methods Load, LoadFrom, or LoadFile that last method seems to work. However, I still seem to be unable to create instances or use objects. Each time I try, I get errors that describe that Powershell is unable to find any of the public types. I know the classes are there: $asm = [System.Reflection.Assembly]::LoadFrom($dllpath) $cbbtypes = $asm.GetExportedTypes() $cbbtypes | Get-Member -Static ---- start of excerpt ---- TypeName: CloudBerryLab.Backup.API.BackupProvider Name MemberType Definition ---- ---------- ---------- PlanChanged Event System.EventHandler`1[CloudBerryLab.Backup.API.Utils.ChangedEventArgs] PlanChanged(Sy... PlanRemoved Event System.EventHandler`1[CloudBerryLab.Backup.API.Utils.PlanRemoveEventArgs] PlanRemoved... CalculateFolderSize Method static long CalculateFolderSize() Equals Method static bool Equals(System.Object objA, System.Object objB) GetAccounts Method static CloudBerryLab.Backup.API.Account[], CloudBerry.Backup.API, Version=1.0.0.1, Cu... GetBackupPlans Method static CloudBerryLab.Backup.API.BackupPlan[], CloudBerry.Backup.API, Version=1.0.0.1,... ReferenceEquals Method static bool ReferenceEquals(System.Object objA, System.Object objB) SetProfilePath Method static System.Void SetProfilePath(string profilePath) ----end of excerpt---- Trying to use static methods fail, I don't know why!!! [CloudBerryLab.Backup.API.BackupProvider]::GetAccounts() Unable to find type [CloudBerryLab.Backup.API.BackupProvider]: make sure that the assembly containing this type is load ed. At line:1 char:42 + [CloudBerryLab.Backup.API.BackupProvider] <<<< ::GetAccounts() + CategoryInfo : InvalidOperation: (CloudBerryLab.Backup.API.BackupProvider:String) [], RuntimeException + FullyQualifiedErrorId : TypeNotFound Any guidance appreciated!!

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  • What is the best way to add and order to Doctrine Nested Set Trees?

    - by murze
    What is the best way to add a sense of order in Doctrine Nested Sets? The documention contains several examples of how to get al the childeren of a specific node $category->getNode()->getSiblings() But how can I for example: change the position of the fourth sibling to the second position get only the second sibling add a sibling between the second and third child etc... Do I have to manually add and ordercolumn to the model to do these operations?

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  • Error Creating RSS Feed XML file - Java

    - by GigaPr
    Hi, i am trying to create an RssFeed using java this is the class i use import com.rssFeed.domain.RSS; import com.rssFeed.domain.RSSItem; import java.io.FileOutputStream; import java.util.Iterator; import javax.xml.stream.XMLEventFactory; import javax.xml.stream.XMLEventWriter; import javax.xml.stream.XMLOutputFactory; import javax.xml.stream.XMLStreamException; import javax.xml.stream.events.Characters; import javax.xml.stream.events.EndElement; import javax.xml.stream.events.StartDocument; import javax.xml.stream.events.StartElement; import javax.xml.stream.events.XMLEvent; public class RssBuilder { private static String XML_BLOCK = "\n"; private static String XML_INDENT = "\t"; public static void BuildRss(RSS rss, String xmlfile) throws Exception { XMLOutputFactory output = XMLOutputFactory.newInstance(); XMLEventWriter writer = output.createXMLEventWriter(new FileOutputStream(xmlfile)); try { XMLEventFactory eventFactory = XMLEventFactory.newInstance(); XMLEvent endSection = eventFactory.createDTD(XML_BLOCK); StartDocument startDocument = eventFactory.createStartDocument(); writer.add(startDocument); writer.add(endSection); StartElement rssStart = eventFactory.createStartElement("", "", "rss"); writer.add(rssStart); writer.add(eventFactory.createAttribute("version", "2.0")); writer.add(endSection); writer.add(eventFactory.createStartElement("", "", "channel")); writer.add(endSection); createNode(writer, "title", rss.getTitle()); createNode(writer, "description", rss.getDescription()); createNode(writer, "link", rss.getLink()); createNode(writer, "dateCreated", rss.getDateCreated().toString()); createNode(writer, "language", rss.getLanguage()); createNode(writer, "pubDate", rss.getPubDate().toString()); createNode(writer, "dateModified", rss.getDateModified().toString()); createNode(writer, "dateModified", rss.getDateModified().toString()); createNode(writer, "pubDate", rss.getPubDate().toString()); createNode(writer, "lastBuildDate", rss.getLastBuildDate().toString()); createNode(writer, "language", rss.getLanguage().toString()); createNode(writer, "rating", rss.getRating().toString()); Iterator<RSSItem> iterator = rss.getRssItems().iterator(); while (iterator.hasNext()) { RSSItem entry = iterator.next(); writer.add(eventFactory.createStartElement("", "", "item")); writer.add(endSection); createNode(writer, "title", entry.getTitle()); createNode(writer, "description", entry.getDescription()); createNode(writer, "link", entry.getLink()); createNode(writer, "dateCreated", entry.getDateCreated().toString()); createNode(writer, "pubDate", entry.getDateModified().toString()); writer.add(eventFactory.createEndElement("", "", "item")); writer.add(endSection); } writer.add(endSection); writer.add(eventFactory.createEndElement("", "", "channel")); writer.add(endSection); writer.add(eventFactory.createEndElement("", "", "rss")); writer.add(endSection); writer.add(eventFactory.createEndDocument()); writer.close(); } catch(Exception e) { writer.close(); } } private static void createNode(XMLEventWriter eventWriter, String name, String value)throws XMLStreamException { XMLEventFactory eventFactory = XMLEventFactory.newInstance(); XMLEvent endSection = eventFactory.createDTD(XML_BLOCK); XMLEvent tabSection = eventFactory.createDTD(XML_INDENT); StartElement sElement = eventFactory.createStartElement("", "", name); eventWriter.add(tabSection); eventWriter.add(sElement); Characters characters = eventFactory.createCharacters(value); eventWriter.add(characters); EndElement eElement = eventFactory.createEndElement("", "", name); eventWriter.add(eElement); eventWriter.add(endSection); } } But i get the following error type Exception report message descriptionThe server encountered an internal error () that prevented it from fulfilling this request. exception org.springframework.web.util.NestedServletException: Request processing failed; nested exception is javax.xml.stream.XMLStreamException: Can not write DOCTYPE declaration (DTD) when not in prolog any more (state 2; start element(s) written) root cause javax.xml.stream.XMLStreamException: Can not write DOCTYPE declaration (DTD) when not in prolog any more (state 2; start element(s) written) what does it mean?

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