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• With WPF and Silverlight against cancer

  - by Laurent Bugnion

  MVPs are well known for their good heart (like the GeekGive initiative shows) and Client App Dev MVP Gregor Biswanger is no exception. At the latest MVP summit (beginning of March 2011), he took over a DVD about WPF 4 and Silverlight 4 and asked a few Microsoft superstars to sign it. Right now, the DVD is auctioned on eBay and of course the proceeds will go to a charitable work: The German League against Cancer (Deutsche Krebshilfe). The post is in German and English (scroll down for the English text). This sounds like a great idea, and considering who signed it, it is going to be a real collectible: Scott Hanselman (Principal Program Manager Lead in Server and Tools Online) Tim Heuer (Program Manager for Microsoft Silverlight) Rob Relyea (Principal Program Manager Lead - Client Platform WPF & Silverlight) Pete Brown (Developer Division Community Program Manager - Windows Client) Eric Fabricant (Program Manager WPF) Jeff Wilcox (Silverlight Senior SDE) Jeffrey R Ferman (SDET Visual Studio Client Dev Tools) Chan Verbeck (Expression Blend Team) Yaniv Feinberg (Expression Blend Team) Douglas Olson (Director Dev Expression) Samuel W. Bent (Principal Software Design Engineer WPF) John Papa (Technical Evangelist for Silverlight) So if you feel that you could do a generous gesture, go ahead and take a look at the auction, and talk about it around you. Let’s prove again that geeks rule, also when it comes to giving to a good cause! Cheers! Laurent   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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• Silverlight Cream for April 21, 2010 -- #843

  - by Dave Campbell

  In this Issue: Alan Beasley, Roboblob, SilverLaw, Mike Snow, and Chris Koenig. Shoutouts: Ozymandias has a discussion up: The Three Pillars of Xbox Live on Windows Phone John Papa announced that Silverlight 4 is now on WebPI: Get Silverlight 4 – Simplified! Dan Wahlin posted the code and material from DevConnections: Code from my DevConnections Talks and Workshop Tim Heuer has a good deal posted from GoDaddy: Get a Silverlight XAP signing certificate for cheap thanks to GoDaddy From SilverlightCream.com: ListBox Styling (Part2-ControlTemplate) in Expression Blend & Silverlight Alan Beasley is back with part 2 of his ListBox styling tutorial adventure in Expression Blend... this looks like some of the stuff I was getting close to in Win32 a bunch of years back... great stuff... thanks Alan! Unit Testing Modal Dialogs in MVVM and Silverlight 4 Roboblob responds to some feedback with an expansion on his previous post with the addition of some Unit Testing. ChildWindowResizeBehavior - Silverlight 4 Blend 4 RC design time support SilverLaw has a short post about a behavior he has available at the Expression Gallery that resizes a child window with the Mouse Wheel, and also has Design-time support in Blend. Tip of the Day #111 – How to Configure your Silverlight App to run in Elevated Trust Mode Mike Snow has his latest tip up, and this one is on both ends of of the Elevated Trust Mode of OOB ... how to set it, and what your user experience is like. WP7 Part 2 – Working with Data Chris Koenig has part 2 of his WP7 exploration up ... he's tackling Nerd Dinner and pulling down Odata. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Changes to the LINQ-to-StreamInsight Dialect

  - by Roman Schindlauer

  In previous versions of StreamInsight (1.0 through 2.0), CepStream<> represents temporal streams of many varieties: Streams with ‘open’ inputs (e.g., those defined and composed over CepStream<T>.Create(string streamName) Streams with ‘partially bound’ inputs (e.g., those defined and composed over CepStream<T>.Create(Type adapterFactory, …)) Streams with fully bound inputs (e.g., those defined and composed over To*Stream – sequences or DQC) The stream may be embedded (where Server.Create is used) The stream may be remote (where Server.Connect is used) When adding support for new programming primitives in StreamInsight 2.1, we faced a choice: Add a fourth variety (use CepStream<> to represent streams that are bound the new programming model constructs), or introduce a separate type that represents temporal streams in the new user model. We opted for the latter. Introducing a new type has the effect of reducing the number of (confusing) runtime failures due to inappropriate uses of CepStream<> instances in the incorrect context. The new types are: IStreamable<>, which logically represents a temporal stream. IQStreamable<> : IStreamable<>, which represents a queryable temporal stream. Its relationship to IStreamable<> is analogous to the relationship of IQueryable<> to IEnumerable<>. The developer can compose temporal queries over remote stream sources using this type. The syntax of temporal queries composed over IQStreamable<> is mostly consistent with the syntax of our existing CepStream<>-based LINQ provider. However, we have taken the opportunity to refine certain aspects of the language surface. Differences are outlined below. Because 2.1 introduces new types to represent temporal queries, the changes outlined in this post do no impact existing StreamInsight applications using the existing types! SelectMany StreamInsight does not support the SelectMany operator in its usual form (which is analogous to SQL’s “CROSS APPLY” operator): static IEnumerable<R> SelectMany<T, R>(this IEnumerable<T> source, Func<T, IEnumerable<R>> collectionSelector) It instead uses SelectMany as a convenient syntactic representation of an inner join. The parameter to the selector function is thus unavailable. Because the parameter isn’t supported, its type in StreamInsight 1.0 – 2.0 wasn’t carefully scrutinized. Unfortunately, the type chosen for the parameter is nonsensical to LINQ programmers: static CepStream<R> SelectMany<T, R>(this CepStream<T> source, Expression<Func<CepStream<T>, CepStream<R>>> streamSelector) Using Unit as the type for the parameter accurately reflects the StreamInsight’s capabilities: static IQStreamable<R> SelectMany<T, R>(this IQStreamable<T> source, Expression<Func<Unit, IQStreamable<R>>> streamSelector) For queries that succeed – that is, queries that do not reference the stream selector parameter – there is no difference between the code written for the two overloads: from x in xs from y in ys select f(x, y) Top-K The Take operator used in StreamInsight causes confusion for LINQ programmers because it is applied to the (unbounded) stream rather than the (bounded) window, suggesting that the query as a whole will return k rows: (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) The use of SelectMany is also unfortunate in this context because it implies the availability of the window parameter within the remainder of the comprehension. The following compiles but fails at runtime: (from win in xs.SnapshotWindow() from x in win orderby x.A select win).Take(k) The Take operator in 2.1 is applied to the window rather than the stream: Before After (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) from win in xs.SnapshotWindow() from b in     (from x in win     orderby x.A     select x.B).Take(k) select b Multicast We are introducing an explicit multicast operator in order to preserve expression identity, which is important given the semantics about moving code to and from StreamInsight. This also better matches existing LINQ dialects, such as Reactive. This pattern enables expressing multicasting in two ways: Implicit Explicit var ys = from x in xs          where x.A > 1          select x; var zs = from y1 in ys          from y2 in ys.ShiftEventTime(_ => TimeSpan.FromSeconds(1))          select y1 + y2; var ys = from x in xs          where x.A > 1          select x; var zs = ys.Multicast(ys1 =>     from y1 in ys1     from y2 in ys1.ShiftEventTime(_ => TimeSpan.FromSeconds(1))     select y1 + y2; Notice the product translates an expression using implicit multicast into an expression using the explicit multicast operator. The user does not see this translation. Default window policies Only default window policies are supported in the new surface. Other policies can be simulated by using AlterEventLifetime. Before After xs.SnapshotWindow(     WindowInputPolicy.ClipToWindow,     SnapshotWindowInputPolicy.Clip) xs.SnapshotWindow() xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.PointAlignToWindowEnd) xs.TumblingWindow(     TimeSpan.FromSeconds(1)) xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.ClipToWindowEnd) Not supported … LeftAntiJoin Representation of LASJ as a correlated sub-query in the LINQ surface is problematic as the StreamInsight engine does not support correlated sub-queries (see discussion of SelectMany). The current syntax requires the introduction of an otherwise unsupported ‘IsEmpty()’ operator. As a result, the pattern is not discoverable and implies capabilities not present in the server. The direct representation of LASJ is used instead: Before After from x in xs where     (from y in ys     where x.A > y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, (x, y) => x.A > y.B) from x in xs where     (from y in ys     where x.A == y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, x => x.A, y => y.B) ApplyWithUnion The ApplyWithUnion methods have been deprecated since their signatures are redundant given the standard SelectMany overloads: Before After xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count()) xs.GroupBy(x => x.A).SelectMany(     gs =>     from win in gs.SnapshotWindow()     select win.Count()) xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count(), r => new { r.Key, Count = r.Payload }) from x in xs group x by x.A into gs from win in gs.SnapshotWindow() select new { gs.Key, Count = win.Count() } Alternate UDO syntax The representation of UDOs in the StreamInsight LINQ dialect confuses cardinalities. Based on the semantics of user-defined operators in StreamInsight, one would expect to construct queries in the following form: from win in xs.SnapshotWindow() from y in MyUdo(win) select y Instead, the UDO proxy method is referenced within a projection, and the (many) results returned by the user code are automatically flattened into a stream: from win in xs.SnapshotWindow() select MyUdo(win) The “many-or-one” confusion is exemplified by the following example that compiles but fails at runtime: from win in xs.SnapshotWindow() select MyUdo(win) + win.Count() The above query must fail because the UDO is in fact returning many values per window while the count aggregate is returning one. Original syntax New alternate syntax from win in xs.SnapshotWindow() select win.UdoProxy(1) from win in xs.SnapshotWindow() from y in win.UserDefinedOperator(() => new Udo(1)) select y -or- from win in xs.SnapshotWindow() from y in win.UdoMacro(1) select y Notice that this formulation also sidesteps the dynamic type pitfalls of the existing “proxy method” approach to UDOs, in which the type of the UDO implementation (TInput, TOuput) and the type of its constructor arguments (TConfig) need to align in a precise and non-obvious way with the argument and return types for the corresponding proxy method. UDSO syntax UDSO currently leverages the DataContractSerializer to clone initial state for logical instances of the user operator. Initial state will instead be described by an expression in the new LINQ surface. Before After xs.Scan(new Udso()) xs.Scan(() => new Udso()) Name changes ShiftEventTime => AlterEventStartTime: The alter event lifetime overload taking a new start time value has been renamed. CountByStartTimeWindow => CountWindow

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• How-to create a select one choice listing common time zones

  - by frank.nimphius

  Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} ADF Faces provides an option to query a list of common timezones for display in a Select One Choice component. The EL expression for this is #{af:getCommonTimeZoneSelectItems()}. To use this expression in a Single Select One Choice component, drag and drop the component from the Oracle JDeveloper Component Palette into a JSF page.  In the opened dialog, copy the expression into the Value property below the Bind to list (select items) header. <af:selectOneChoice label="TimeZones" id="soc1">  <f:selectItems value="#{af:getCommonTimeZoneSelectItems()}"                          id="si1"/></af:selectOneChoice>

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• Working with Reporting Services Filters–Part 5: OR Logic

  - by smisner

  When you combine multiple filters, Reporting Services uses AND logic. Once upon a time, there was actually a drop-down list for selecting AND or OR between filters which was very confusing to people because often it was grayed out. Now that selection is gone, but no matter. It wouldn’t help us solve the problem that I want to describe today. As with many problems, Reporting Services gives us more than one way to apply OR logic in a filter. If I want a filter to include this value OR that value for the same field, one approach is to set up the filter is to use the IN operator as I explained in Part 1 of this series. But what if I want to base the filter on two different fields? I  need a different solution. Using the AdventureWorksDW2008R2 database, I have a report that lists product sales: Let’s say that I want to filter this report to show only products that are Bikes (a category) OR products for which sales were greater than $1,000 in a year. If I set up the filter like this: Expression Data Type Operator Value [Category] Text = Bikes [SalesAmount]   > 1000 Then AND logic is used which means that both conditions must be true. That’s not the result I want. Instead, I need to set up the filter like this: Expression Data Type Operator Value =Fields!EnglishProductCategoryName.Value = "Bikes" OR Fields!SalesAmount.Value > 1000 Boolean = =True The OR logic needs to be part of the expression so that it can return a Boolean value that we test against the Value. Notice that I have used =True rather than True for the value. The filtered report appears below. Any non-bike product appears only if the total sales exceed $1,000, whereas Bikes appear regardless of sales. (You can’t see it in this screenshot, but Mountain-400-W Silver, 38 has sales of $923 in 2007 but gets included because it is in the Bikes category.)

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• PerlRegEx vs RegularExpressionsCore Delphi Units

  - by Jan Goyvaerts

  The RegularExpressionsCore unit that is part of Delphi XE is based on the latest class-based PerlRegEx unit that I developed. Embarcadero only made a few changes to the unit. These changes are insignificant enough that code written for earlier versions of Delphi using the class-based PerlRegEx unit will work just the same with Delphi XE. The unit was renamed from PerlRegEx to RegularExpressionsCore. When migrating your code to Delphi XE, you can choose whether you want to use the new RegularExpressionsCore unit or continue using the PerlRegEx unit in your application. All you need to change is which unit you add to the uses clause in your own units. Indentation and line breaks in the code were changed to match the style used in the Delphi RTL and VCL code. This does not change the code, but makes it harder to diff the two units. Literal strings in the unit were separated into their own unit called RegularExpressionsConsts. These strings are only used for error messages that indicate bugs in your code. If your code uses TPerlRegEx correctly then the user should not see any of these strings. My code uses assertions to check for out of bounds parameters, while Embarcadero uses exceptions. Again, if you use TPerlRegEx correctly, you should never get any assertions or exceptions. The Compile method raises an exception if the regular expression is invalid in both my original TPerlRegEx component and Embarcadero’s version. If your code allows the user to provide the regular expression, you should explicitly call Compile and catch any exceptions it raises so you can tell the user there is a problem with the regular expression. Even with user-provided regular expressions, you shouldn’t get any other assertions or exceptions if your code is correct. Note that Embarcadero owns all the rights to their RegularExpressionsCore unit. Like all the other RTL and VCL units, this unit cannot be distributed by myself or anyone other than Embarcadero. I do retain the rights to my original PerlRegEx unit which I will continue to make available for those using older versions of Delphi.

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• I don't understand the definition of side effects

  - by Chris Okyen

  I don't understand the wikipedia article on Side Effects: In computer science, a function or expression is said to have a side effect if, in addition to returning a value, it also 1.) Modifies some state or 2.) Has an observable interaction with calling functions or the outside world. I know an example of the first thing that causes a function or expression to have side effects - modifying a state Function and Expression modifying a state : 1.) foo(int X) { return x = x % x; } a = a + 1; What does 2.) - Has an observable interaction with calling functions or the outside world," mean? - Please give an example. The article continues on to say, "For example, a function might modify a global or static variable, modify one of its arguments, raise an exception, write data to a display or file, read data, or call other side-effecting functions...." Are all these examples, examples of 1.) - Modifiying some state , or are they also part of 2.) - Has an observable interaction with calling functions or the outside world?

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• Should you create a class within a method?

  - by Amndeep7

  I have made a program using Java that is an implementation of this project: http://nifty.stanford.edu/2009/stone-random-art/sml/index.html. Essentially, you create a mathematical expression and, using the pixel coordinate as input, make a picture. After I initially implemented this in serial, I then implemented it in parallel due to the fact that if the picture size is too large or if the mathematical expression is too complex (especially considering the fact that I made the expression recursively), it takes a really long time. During this process, I realized that I needed two classes which implemented the Runnable interface as I had to put in parameters for the run method, which you aren't allowed to do directly. One of these classes ended up being a medium sized static inner class (not large enough to make an independent class file for it though). The other though, just needed a few parameters to determine some indexes and the size of the for loop that I was making run in parallel - here it is: class DataConversionRunnable implements Runnable { int jj, kk, w; DataConversionRunnable(int column, int matrix, int wid) { jj = column; kk = matrix; w = wid; } public void run() { for(int i = 0; i < w; i++) colorvals[kk][jj][i] = (int) ((raw[kk][jj][i] + 1.0) * 255 / 2.0); increaseCounter(); } } My question is should I make it a static inner class or can I just create it in a method? What is the general programming convention followed in this case?

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• Working with Reporting Services Filters–Part 5: OR Logic

  - by smisner

  When you combine multiple filters, Reporting Services uses AND logic. Once upon a time, there was actually a drop-down list for selecting AND or OR between filters which was very confusing to people because often it was grayed out. Now that selection is gone, but no matter. It wouldn’t help us solve the problem that I want to describe today. As with many problems, Reporting Services gives us more than one way to apply OR logic in a filter. If I want a filter to include this value OR that value for the same field, one approach is to set up the filter is to use the IN operator as I explained in Part 1 of this series. But what if I want to base the filter on two different fields? I  need a different solution. Using the AdventureWorksDW2008R2 database, I have a report that lists product sales: Let’s say that I want to filter this report to show only products that are Bikes (a category) OR products for which sales were greater than $1,000 in a year. If I set up the filter like this: Expression Data Type Operator Value [Category] Text = Bikes [SalesAmount]   > 1000 Then AND logic is used which means that both conditions must be true. That’s not the result I want. Instead, I need to set up the filter like this: Expression Data Type Operator Value =Fields!EnglishProductCategoryName.Value = "Bikes" OR Fields!SalesAmount.Value > 1000 Boolean = =True The OR logic needs to be part of the expression so that it can return a Boolean value that we test against the Value. Notice that I have used =True rather than True for the value. The filtered report appears below. Any non-bike product appears only if the total sales exceed $1,000, whereas Bikes appear regardless of sales. (You can’t see it in this screenshot, but Mountain-400-W Silver, 38 has sales of $923 in 2007 but gets included because it is in the Bikes category.)

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• Changes to the LINQ-to-StreamInsight Dialect

  - by Roman Schindlauer

  In previous versions of StreamInsight (1.0 through 2.0), CepStream<> represents temporal streams of many varieties: Streams with ‘open’ inputs (e.g., those defined and composed over CepStream<T>.Create(string streamName) Streams with ‘partially bound’ inputs (e.g., those defined and composed over CepStream<T>.Create(Type adapterFactory, …)) Streams with fully bound inputs (e.g., those defined and composed over To*Stream – sequences or DQC) The stream may be embedded (where Server.Create is used) The stream may be remote (where Server.Connect is used) When adding support for new programming primitives in StreamInsight 2.1, we faced a choice: Add a fourth variety (use CepStream<> to represent streams that are bound the new programming model constructs), or introduce a separate type that represents temporal streams in the new user model. We opted for the latter. Introducing a new type has the effect of reducing the number of (confusing) runtime failures due to inappropriate uses of CepStream<> instances in the incorrect context. The new types are: IStreamable<>, which logically represents a temporal stream. IQStreamable<> : IStreamable<>, which represents a queryable temporal stream. Its relationship to IStreamable<> is analogous to the relationship of IQueryable<> to IEnumerable<>. The developer can compose temporal queries over remote stream sources using this type. The syntax of temporal queries composed over IQStreamable<> is mostly consistent with the syntax of our existing CepStream<>-based LINQ provider. However, we have taken the opportunity to refine certain aspects of the language surface. Differences are outlined below. Because 2.1 introduces new types to represent temporal queries, the changes outlined in this post do no impact existing StreamInsight applications using the existing types! SelectMany StreamInsight does not support the SelectMany operator in its usual form (which is analogous to SQL’s “CROSS APPLY” operator): static IEnumerable<R> SelectMany<T, R>(this IEnumerable<T> source, Func<T, IEnumerable<R>> collectionSelector) It instead uses SelectMany as a convenient syntactic representation of an inner join. The parameter to the selector function is thus unavailable. Because the parameter isn’t supported, its type in StreamInsight 1.0 – 2.0 wasn’t carefully scrutinized. Unfortunately, the type chosen for the parameter is nonsensical to LINQ programmers: static CepStream<R> SelectMany<T, R>(this CepStream<T> source, Expression<Func<CepStream<T>, CepStream<R>>> streamSelector) Using Unit as the type for the parameter accurately reflects the StreamInsight’s capabilities: static IQStreamable<R> SelectMany<T, R>(this IQStreamable<T> source, Expression<Func<Unit, IQStreamable<R>>> streamSelector) For queries that succeed – that is, queries that do not reference the stream selector parameter – there is no difference between the code written for the two overloads: from x in xs from y in ys select f(x, y) Top-K The Take operator used in StreamInsight causes confusion for LINQ programmers because it is applied to the (unbounded) stream rather than the (bounded) window, suggesting that the query as a whole will return k rows: (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) The use of SelectMany is also unfortunate in this context because it implies the availability of the window parameter within the remainder of the comprehension. The following compiles but fails at runtime: (from win in xs.SnapshotWindow() from x in win orderby x.A select win).Take(k) The Take operator in 2.1 is applied to the window rather than the stream: Before After (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) from win in xs.SnapshotWindow() from b in     (from x in win     orderby x.A     select x.B).Take(k) select b Multicast We are introducing an explicit multicast operator in order to preserve expression identity, which is important given the semantics about moving code to and from StreamInsight. This also better matches existing LINQ dialects, such as Reactive. This pattern enables expressing multicasting in two ways: Implicit Explicit var ys = from x in xs          where x.A > 1          select x; var zs = from y1 in ys          from y2 in ys.ShiftEventTime(_ => TimeSpan.FromSeconds(1))          select y1 + y2; var ys = from x in xs          where x.A > 1          select x; var zs = ys.Multicast(ys1 =>     from y1 in ys1     from y2 in ys1.ShiftEventTime(_ => TimeSpan.FromSeconds(1))     select y1 + y2; Notice the product translates an expression using implicit multicast into an expression using the explicit multicast operator. The user does not see this translation. Default window policies Only default window policies are supported in the new surface. Other policies can be simulated by using AlterEventLifetime. Before After xs.SnapshotWindow(     WindowInputPolicy.ClipToWindow,     SnapshotWindowInputPolicy.Clip) xs.SnapshotWindow() xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.PointAlignToWindowEnd) xs.TumblingWindow(     TimeSpan.FromSeconds(1)) xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.ClipToWindowEnd) Not supported … LeftAntiJoin Representation of LASJ as a correlated sub-query in the LINQ surface is problematic as the StreamInsight engine does not support correlated sub-queries (see discussion of SelectMany). The current syntax requires the introduction of an otherwise unsupported ‘IsEmpty()’ operator. As a result, the pattern is not discoverable and implies capabilities not present in the server. The direct representation of LASJ is used instead: Before After from x in xs where     (from y in ys     where x.A > y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, (x, y) => x.A > y.B) from x in xs where     (from y in ys     where x.A == y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, x => x.A, y => y.B) ApplyWithUnion The ApplyWithUnion methods have been deprecated since their signatures are redundant given the standard SelectMany overloads: Before After xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count()) xs.GroupBy(x => x.A).SelectMany(     gs =>     from win in gs.SnapshotWindow()     select win.Count()) xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count(), r => new { r.Key, Count = r.Payload }) from x in xs group x by x.A into gs from win in gs.SnapshotWindow() select new { gs.Key, Count = win.Count() } Alternate UDO syntax The representation of UDOs in the StreamInsight LINQ dialect confuses cardinalities. Based on the semantics of user-defined operators in StreamInsight, one would expect to construct queries in the following form: from win in xs.SnapshotWindow() from y in MyUdo(win) select y Instead, the UDO proxy method is referenced within a projection, and the (many) results returned by the user code are automatically flattened into a stream: from win in xs.SnapshotWindow() select MyUdo(win) The “many-or-one” confusion is exemplified by the following example that compiles but fails at runtime: from win in xs.SnapshotWindow() select MyUdo(win) + win.Count() The above query must fail because the UDO is in fact returning many values per window while the count aggregate is returning one. Original syntax New alternate syntax from win in xs.SnapshotWindow() select win.UdoProxy(1) from win in xs.SnapshotWindow() from y in win.UserDefinedOperator(() => new Udo(1)) select y -or- from win in xs.SnapshotWindow() from y in win.UdoMacro(1) select y Notice that this formulation also sidesteps the dynamic type pitfalls of the existing “proxy method” approach to UDOs, in which the type of the UDO implementation (TInput, TOuput) and the type of its constructor arguments (TConfig) need to align in a precise and non-obvious way with the argument and return types for the corresponding proxy method. UDSO syntax UDSO currently leverages the DataContractSerializer to clone initial state for logical instances of the user operator. Initial state will instead be described by an expression in the new LINQ surface. Before After xs.Scan(new Udso()) xs.Scan(() => new Udso()) Name changes ShiftEventTime => AlterEventStartTime: The alter event lifetime overload taking a new start time value has been renamed. CountByStartTimeWindow => CountWindow

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• HTMLUNIT Facebook javascript warning

  - by Shin

  Hi I am trying to create simple application that would be able to search people on facebook using given e-mail. I am already able to log into an account using the HTMLunit tool and even create a page, which should throw result of my search. But when I try to print the result as XML the file is missing some blocks of javascript results (I can tell that they are missing by comparing file created by my application and source code, that can be viewed by using IE) Is there any way around this? I just need to get the same result IE's showsource function does. Thanks a lot. During execution of file, I am getting these WARNINGS: 1.4.2010 23:25:14 com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://s-static.ak.facebook.com/rsrc.php/z49PH/hash/9p47jvzp.js', but got 'application/x-javascript'. 21.4.2010 23:25:14 com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://s-static.ak.facebook.com/rsrc.php/z5N5C/hash/dhdy6xq3.js', but got 'application/x-javascript'. 21.4.2010 23:25:14 com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://s-static.ak.facebook.com/rsrc.php/z4TLI/hash/9ucb5trt.js', but got 'application/x-javascript'. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'http://static.ak.fbcdn.net/rsrc.php/z49PH/hash/9p47jvzp.js', but got 'application/x-javascript'. And then a lot of CSS errors 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [44:92] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [44:92] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [51:75] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [51:75] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [161:62] Error in style rule. Invalid token ":". Was expecting one of: <S>, "}", <COMMA>, ";", "/", <PLUS>, "-", <HASH>, <STRING>, <URI>, "!", "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [161:62] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [134:25] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [134:25] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [140:175] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [140:175] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [157:38] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [158:128] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [158:128] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [197:16] Error in pseudo class or element. Invalid token ":". Was expecting one of: <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [197:16] Ignoring the whole rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [218:58] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [218:58] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [349:141] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [349:141] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [356:101] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [356:106] Error in style rule. Invalid token "opacity". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [356:106] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [360:87] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [360:93] Error in style rule. Invalid token "opacity". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [360:93] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [365:39] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [365:43] Error in style rule. Invalid token "left". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [365:43] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [423:51] Error in style rule. Invalid token "~". Was expecting one of: <S>, <LBRACE>, <COMMA>, <PLUS>, <GREATER>, <IDENT>, "*", <HASH>, ".", "[", ":". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [423:51] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [466:135] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [466:135] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [501:30] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [501:30] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [584:59] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [584:64] Error in style rule. Invalid token "opacity". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [584:64] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [585:36] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [585:36] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [592:120] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [592:125] Error in style rule. Invalid token "opacity". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [592:125] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [598:44] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [598:48] Error in style rule. Invalid token "left". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [598:48] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [601:52] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [601:52] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [637:89] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [637:89] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [648:56] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [648:56] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [656:289] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [656:289] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [660:48] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [660:55] Error in style rule. Invalid token "-ms-filter". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [660:55] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [664:29] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [664:29] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [669:22] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [669:22] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [673:231] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [673:231] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [674:17] Error in pseudo class or element. Invalid token ":". Was expecting one of: <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [674:17] Ignoring the whole rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [690:81] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [690:87] Error in style rule. Invalid token "-ms-filter". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [690:87] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [693:84] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [693:91] Error in style rule. Invalid token "-ms-filter". Was expecting one of: "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [693:91] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [695:32] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [695:32] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [702:32] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [702:32] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [703:17] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [703:17] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [705:166] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [705:166] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [706:21] Error in pseudo class or element. Invalid token ":". Was expecting one of: <FUNCTION>, <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [706:21] Ignoring the whole rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [101:1] Error in declaration. Invalid token "}". Was expecting one of: <S>, ":". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [101:2] Error in style rule. Invalid token "\n". Was expecting one of: <S>, "}", ";". 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [101:2] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [185:39] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [185:39] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [186:38] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [186:38] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [235:84] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [235:84] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [290:26] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [290:26] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [291:70] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [291:70] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [298:52] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [298:52] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [299:48] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [299:48] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [305:50] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [305:50] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [306:69] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [306:69] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [307:89] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [307:89] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [309:83] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [309:83] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [317:84] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [317:84] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [473:215] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [473:215] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [475:137] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [475:137] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [480:78] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [480:78] Ignoring the following declarations in this rule. 21.4.2010 23:25:23 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [484:78] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [484:78] Ignoring the following declarations in this rule. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [486:91] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [486:91] Ignoring the following declarations in this rule. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [498:16] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [498:16] Ignoring the following declarations in this rule. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [506:33] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [506:33] Ignoring the following declarations in this rule. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [508:14] Error in pseudo class or element. Invalid token ":". Was expecting one of: <FUNCTION>, <IDENT>. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [508:14] Ignoring the whole rule. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [567:82] Error in expression. Invalid token "=". Was expecting one of: <S>, <COMMA>, "/", <PLUS>, "-", <HASH>, <STRING>, ")", <URI>, "inherit", <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <DIMENSION>, <PERCENTAGE>, <NUMBER>, <FUNCTION>, <IDENT>. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [567:86] Error in style rule. Invalid token "opacity". Was expecting one of: "}", ";". 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning: null [567:86] Ignoring the following declarations in this rule. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error WARNING: CSS error: null [572:159] Error in style rule. Invalid token "*". Was expecting one of: <S>, "}", ";", <IDENT>. 21.4.2010 23:25:24 com.gargoylesoftware.htmlunit.DefaultCssErrorHandler warning WARNING: CSS warning:

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• c#: Design advice. Using DataTable or List<MyObject> for a generic rule checker

  - by Andrew White

  Hi, I have about 100,000 lines of generic data. Columns/Properties of this data are user definable and are of the usual data types (string, int, double, date). There will be about 50 columns/properties. I have 2 needs: To be able to calculate new columns/properties using an expression e.g. Column3 = Column1 * Column2. Ultimately I would like to be able to use external data using a callback, e.g. Column3 = Column1 * GetTemperature The expression is relatively simple, maths operations, sum, count & IF are the only necessary functions. To be able to filter/group the data and perform aggregations e.g. Sum(Data.Column1) Where(Data.Column2 == "blah") As far as I can see I have two options: 1. Using a DataTable. = Point 1 above is achieved by using DataColumn.Expression = Point 2 above is acheived by using DataTable.DefaultView.RowFilter & C# code 2. Using a List of generic Objects each with a Dictionary< string, object to store the values. = Point 1 could be achieved by something like NCalc = Point 2 is achieved using LINQ DataTable: Pros: DataColumn.Expression is inbuilt Cons: RowFilter & coding c# is not as "nice" as LINQ, DataColumn.Expression does not support callbacks(?) = workaround could be to get & replace external value when creating the calculated column GenericList: Pros: LINQ syntax, NCalc supports callbacks Cons: Implementing NCalc/generic calc engine Based on the above I would think a GenericList approach would win, but something I have not factored in is the performance which for some reason I think would be better with a datatable. Does anyone have a gut feeling / experience with LINQ vs. DataTable performance? How about NCalc? As I said there are about 100,000 rows of data, with 50 columns, of which maybe 20 are calculated. In total about 50 rules will be run against the data, so in total there will be 5 million row/object scans. Would really appreciate any insights. Thx. ps. Of course using a database + SQL & Views etc. would be the easiest solution, but for various reasons can't be implemented.

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• Intermittent "Specified cast is invalid" with StructureMap injected data context

  - by FreshCode

  I am intermittently getting an System.InvalidCastException: Specified cast is not valid. error in my repository layer when performing an abstracted SELECT query mapped with LINQ. The error can't be caused by a mismatched database schema since it works intermittently and it's on my local dev machine. Could it be because StructureMap is caching the data context between page requests? If so, how do I tell StructureMap v2.6.1 to inject a new data context argument into my repository for each request? Update: I found this question which correlates my hunch that something was being re-used. Looks like I need to call Dispose on my injected data context. Not sure how I'm going to do this to all my repositories without copypasting a lot of code. Edit: These errors are popping up all over the place whenever I refresh my local machine too quickly. Doesn't look like it's happening on my remote deployment box, but I can't be sure. I changed all my repositories' StructureMap life cycles to HttpContextScoped() and the error persists. Code: public ActionResult Index() { // error happens here, which queries my page repository var page = _branchService.GetPage("welcome"); if (page != null) ViewData["Welcome"] = page.Body; ... } Repository: GetPage boils down to a filtered query mapping in my page repository. public IQueryable<Page> GetPages() { var pages = from p in _db.Pages let categories = GetPageCategories(p.PageId) let revisions = GetRevisions(p.PageId) select new Page { ID = p.PageId, UserID = p.UserId, Slug = p.Slug, Title = p.Title, Description = p.Description, Body = p.Text, Date = p.Date, IsPublished = p.IsPublished, Categories = new LazyList<Category>(categories), Revisions = new LazyList<PageRevision>(revisions) }; return pages; } where _db is an injected data context as an argument, stored in a private variable which I reuse for SELECT queries. Error: Specified cast is not valid. Exception Details: System.InvalidCastException: Specified cast is not valid. Stack Trace: [InvalidCastException: Specified cast is not valid.] System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +4539 System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +207 System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +500 System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute(Expression expression) +50 System.Linq.Queryable.FirstOrDefault(IQueryable`1 source) +383 Manager.Controllers.SiteController.Index() in C:\Projects\Manager\Manager\Controllers\SiteController.cs:68 lambda_method(Closure , ControllerBase , Object[] ) +79 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +258 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +39 System.Web.Mvc.<>c__DisplayClassd.<InvokeActionMethodWithFilters>b__a() +125 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +640 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +312 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +709 System.Web.Mvc.Controller.ExecuteCore() +162 System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__4() +58 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +20 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +453 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +371

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• Steve Jobs Proposes New Apple Campus.It’s As Beautiful As An iPad.

  - by Gopinath

  After the launch of iOS 5, OS X Lion and iCloud Steve Jobs proposed Apple’s plans for construction of a new campus in Cupertino. In a presentation to Cupertino City Council, Steve proposed to construct a spaceship style beautiful building that can house 12000 employees. Apple recently purchased 150 acres of land from HP and others in Cupertino and this land will be used for their new campus. The architectural design of the new campus looks awesome just like their products: iPad / iPhone.It’s a four storied circular building with all curved glasses that can accommodate 12000 employees.,  “We do have a shot at building the best office building in the world,” Jobs told the Council members, “Architecture students will come here to see this.”. The facility is going to be eco-friendly with 80% of landscaping with most of the parking going to underground. The current campus has 3700 trees and Apple is planning to increase them to 6000 trees. The campus will be powered with its own renewable energy source and electric grid as backup. Steve described It’s a pretty amazing building. It’s a little like a spaceship landed. It’s got this gorgeous courtyard in the middle… It’s a circle. It’s curved all the way around. If you build things, this is not the cheapest way to build something Check out the embedded video of Steve Jobs at the City Council meeting An Apple Fan boy quickly photoshopped the new campus to something more interesting This article titled,Steve Jobs Proposes New Apple Campus.It’s As Beautiful As An iPad., was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• Silverlight Cream for January 12, 2011 -- #1025

  - by Dave Campbell

  In this Issue: Amyo Kabir, Rob Eisenberg, Doug Rathbone, John Papa, Jeff Blankenburg(-2-), Mike Taulty, Peter Kuhn, Laurent Bugnion, Vangos Pterneas, and Senthil Kumar. Above the Fold: Silverlight: "Silverlight Popup sample" Amyo Kabir WP7: "Navigation in a #WP7 application with MVVM Light" Laurent Bugnion XNA: "XNA for Silverlight developers: Part 0 - Why should I care?" Peter Kuhn Shoutouts: Mohamed Mosallem posted a video of an Expression Blend demo he gave recently: Expression Blend Demo Rob Eisenberg posted the winners of the Caliburn.Micro Contest he was running .. and a nice bunch of swag too! Announcing the Caliburn.Micro Contest Winners! Dan Moyer is a LightSwitch enthusiast and writes Why I Believe Visual Studio LightSwitch will be a Win... good well-thought-out and written take on Lightswitch. From SilverlightCream.com: Silverlight Popup sample Amyo Kabir has a post up that is short on description but long on demo and the code is available... put this in the 'a picture is worth 1,000 words category' :) Caliburn.Micro Soup to Nuts Part 7 - All About Conventions The 7th episode of Rob Eisenberg's tutorial series on Caliburn.Micro is up. This episode about some of the conventions that you get out-of-the-box with Caliburn.Micro, what it'll do for you, and how you can modify the behavior of the convention to suit your own taste/style. Two little tips for working with Silverlight chart DateTime Axes Doug Rathbone has been working with the Toolkit Charts for WP7 and finding it difficult to get the info he needs, and now that he's worked it out... he's sharing... particularly information about DateTimeAxis. Silverlight TV 56: WCF RIA Services and Azure The first Silverlight TV of 2011 was John Papa discussing WCF RIA Services and Azure with Saurabh Plant. What I Learned In WP7 – Issue 14 As usual, Jeff Blankenburg is a couple ahead of me... his Issue 14 is about some panorama trickery... like navigating to a specific place in one, or preventing wrapping. What I Learned In WP7 – Issue 15 In Jeff Blankenburg's latest WP7 post, he's sharing some interesting insight into Trial Mode and app sales... from the standpoint of someone selling apps. Blend Bits 20–Group Into Mike Taulty has Part 20 of his Blend Bits series up. This one is demonstrating grouping, and what all can be accomplished (or not) with grouping in Blend. XNA for Silverlight developers: Part 0 - Why should I care? Peter Kuhn has the beginning of a series on WP7 and XNA up at SilverlightShow... this looks to be a good intro and way to get your head wrapped around XNA on the phone. Navigation in a #WP7 application with MVVM Light Laurent Bugnion discusses WP7 navigation via MVVM Light, resolving many of the communication/navigation complexities you can get involved in without a tool like his. Motion detection in Silverlight Vangos Pterneas has a followup postto the one on facial detection... this one is on Motion Detection in Silverlight. If you've got a webcam hooked up, you can give a demo app a dance via a link he has in the post. Adding ApplicationBar in Windows Phone 7 using Expression Blend Senthil Kumar follows up a post about using VS to add an application bar to a WP7 app with this one using Expression Blend Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Get Exchange Online Mailbox Size in GB

  - by Brian Jackett

  As mentioned in my previous post I was recently working with a customer to get started with Exchange Online PowerShell commandlets.  In this post I wanted to follow up and show one example of a difference in output from commandlets in Exchange 2010 on-premises vs. Exchange Online.   Problem    The customer was interested in getting the size of mailboxes in GB.  For Exchange on-premises this is fairly easy.  A fellow PFE Gary Siepser wrote an article explaining how to accomplish this (click here).  Note that Gary’s script will not work when remoting from a local machine that doesn’t have the Exchange object model installed.  A similar type of scenario exists if you are executing PowerShell against Exchange Online.  The data type for TotalItemSize  being returned (ByteQuantifiedSize) exists in the Exchange namespace.  If the PowerShell session doesn’t have access to that namespace (or hasn’t loaded it) PowerShell works with an approximation of that data type.    The customer found a sample script on this TechNet article that they attempted to use (minor edits by me to fit on page and remove references to deleted item size.)   Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Select DisplayName,StorageLimitStatus, ` @{name="TotalItemSize (MB)"; expression={[math]::Round( ` ($_.TotalItemSize.Split("(")[1].Split(" ")[0].Replace(",","")/1MB),2)}}, ` ItemCount | Sort "TotalItemSize (MB)" -Descending | Export-CSV "C:\My Documents\All Mailboxes.csv" -NoTypeInformation     The script is targeted to Exchange 2010 but fails for Exchange Online.  In Exchange Online when referencing the TotalItemSize property though it does not have a Split method which ultimately causes the script to fail.   Solution    A simple solution would be to add a call to the ToString method off of the TotalItemSize property (in bold on line 5 below).   Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | Select DisplayName,StorageLimitStatus, ` @{name="TotalItemSize (MB)"; expression={[math]::Round( ` ($_.TotalItemSize.ToString().Split("(")[1].Split(" ")[0].Replace(",","")/1MB),2)}}, ` ItemCount | Sort "TotalItemSize (MB)" -Descending | Export-CSV "C:\My Documents\All Mailboxes.csv" -NoTypeInformation      This fixes the script to run but the numerous string replacements and splits are an eye sore to me.  I attempted to simplify the string manipulation with a regular expression (more info on regular expressions in PowerShell click here).  The result is a workable script that does one nice feature of adding a new member to the mailbox statistics called TotalItemSizeInBytes.  With this member you can then convert into any byte level (KB, MB, GB, etc.) that suits your needs.  You can download the full version of this script below (includes commands to connect to Exchange Online session). $UserMailboxStats = Get-Mailbox -RecipientTypeDetails UserMailbox ` -ResultSize Unlimited | Get-MailboxStatistics $UserMailboxStats | Add-Member -MemberType ScriptProperty -Name TotalItemSizeInBytes ` -Value {$this.TotalItemSize -replace "(.*\()|,| [a-z]*\)", ""} $UserMailboxStats | Select-Object DisplayName,@{Name="TotalItemSize (GB)"; ` Expression={[math]::Round($_.TotalItemSizeInBytes/1GB,2)}}   Conclusion    Moving from on-premises to the cloud with PowerShell (and PowerShell remoting in general) can sometimes present some new challenges due to what you have access to.  This means that you must always test your code / scripts.  I still believe that not having to physically RDP to a server is a huge gain over some of the small hurdles you may encounter during the transition.  Scripting is the future of administration and makes you more valuable.  Hopefully this script and the concepts presented help you be a better admin / developer.         -Frog Out     Links The Get-MailboxStatistics Cmdlet, the TotalitemSize Property, and that pesky little “b” http://blogs.technet.com/b/gary/archive/2010/02/20/the-get-mailboxstatistics-cmdlet-the-totalitemsize-property-and-that-pesky-little-b.aspx   View Mailbox Sizes and Mailbox Quotas Using Windows PowerShell http://technet.microsoft.com/en-us/exchangelabshelp/gg576861#ViewAllMailboxes   Regular Expressions with Windows PowerShell http://www.regular-expressions.info/powershell.html   “I don’t always test my code…” image http://blogs.pinkelephant.com/images/uploads/conferences/I-dont-always-test-my-code-But-when-I-do-I-do-it-in-production.jpg   The One Thing: Brian Jackett and SharePoint 2010 http://www.youtube.com/watch?v=Sg_h66HMP9o

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• Windows Phone 7 Series - Tools and Resources

  - by TechTwaddle

  Unless you've been living in the caves of Lascaux for the past couple of days, you probably know what's happening in the world of Windows Phone. Microsoft unveiled the developer tools required to develop applications and games for Windows Phone 7 at MIX10 a couple of days back. Silverlight and XNA being the major frameworks, no big surprise there. And the best news of all is that all the development tools are free! So if you are planning to develop apps for Windows Phone 7, read on. The first place, or more appropriately hub, for you is the Windows Phone Developer Portal. It has most of the information you need to get you started. Now there is a ton of information available at other places too. In this post, I take time to put all the information that I found useful at one place, and I'll keep updating this as and when I find new stuff.   Setting up the development environment 1. Install Windows Phone Developer Tools CTP (Community Technology Preview) This will install Visual Studio 2010 Express, Silverlight, XNA framework and emulator for Windows Phone 7. It also installs a few support tools. 2. Expression Blend 4 for Windows Phone:     - Install Expression Blend 4 beta     - Install Expression Blend Add-in Preview for Windows Phone     - Install Expression Blend SDK Preview for Windows Phone Installing the above tools should set your machine up for development. I installed the tools on my Windows Vista SP1 machine and the process went smoothly without running into any major hitch. Note that the tools won't install on Windows XP, read the release notes of the CTP. Resources and Documentation 1. Microsoft Windows Phone 7 Series Developer Training Kit 2. Programming Windows Phone 7 Series by Charles Petzold. Contains few chapters only. Gives a good preview. 3. MSDN documentation for Windows Phone 7 Development 4. A sample chapter from Learning Windows Phone Programming [PDF] by Yochay Kiriaty and Jaime Rodriguez. Complete book will be available at a later time. 5. Windows Phone 7 Developer Forum - where you can ask questions and problems you run into and the experts are there to help you. 6. For Silverlight visit silverlight.net and for XNA game development, the XNA Creators Club is the place to go, also make sure you follow Michael Klutcher's and Shawn Hargreaves' blog. 7. And finally the MIX'10 website. Most of the sessions will be available for download later (some are already available). Click on the Windows Phone tag to get all the session details and downloads.   If you are completely new to Silverlight and XNA (like me), and C# makes some sense to you then I suggest you go through the Developer Training Kit. It gives a good start and ramps you up pretty quickly.

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• BizTalk Testing Series - The xpath Function

  - by Michael Stephenson

  Background While the xpath function in a BizTalk orchestration is a very powerful feature I have often come across the situation where someone has hard coded an xpath expression in an orchestration. If you have read some of my previous posts about testing I've tried to get across the general theme like test-driven or test-assisted development approaches where the underlying principle is that your building up your solution of small well tested units that are put together and the resulting solution is usually quite robust. You will be finding more bugs within your unit tests and fewer outside of your team. The thing I don't like about the xpath functions usual usage is when you come across an orchestration which has something like the below snippet in an expression or assign shape: string result = xpath(myMessage,"string(//Order/OrderItem/ProductName)"); My main issue with this is that the xpath statement is hard coded in the orchestration and you don't really know it works until you are running the orchestration. Some of the problems I think you end up with are: You waste time with lengthy debugging of the orchestration when your statement isn't working You might not know the function isn't working quite as expected because the testable unit around it is big You are much more open to regression issues if your schema changes     Approach to Testing The technique I usually follow is to hold the xpath statement as a constant in a helper class or to format a constant with a helper function to get the actual xpath statement. It is then used by the orchestration like follows. string result = xpath(myMessage, MyHelperClass.ProductNameXPathStatement); This means that because the xpath statement is available outside of the orchestration it now becomes testable in its own right. This means: I can test it in its own right I'm less likely to waste time tracking down problems caused by an error in the statement I can reduce the risk or regression issuess I'm now able to implement some testing around my xpath statements which usually are something like the following:    The test will use a sample xml file The sample will be validated against the schema The test will execute the xpath statement and then check the results are as expected     Walk-through BizTalk uses the XPathNavigator internally behind the xpath function to implement the queries you will usually use using the navigators select or evaluate functions. In the sample (link at bottom) I have a small solution which contains a schema from which I have generated a sample instance. I will then use this instance as the basis for my tests.     In the below diagram you can see the helper class which I've encapsulated my xpath expressions in, and some helper functions which will format the expression in the case of a repeating node which would want to inject an index into the xpath query.             I have then created a test class which has some functions to execute some queries against my sample xml file. An example of this is below.         In the test class I have a couple of helper functions which will execute the xpath expressions in a similar way to BizTalk. You could have a proper helper class to do this if you wanted.         You can see now in the BizTalk expression editor I can use these functions alongside the xpath function.         Conclusion I hope you can see with very little effort you can make your life much easier by testing xpath statements outside of an orchestration rather than using them directly hard coded into the orchestration.     This can also save you lots of pain longer term because your build should break if your schema changes unexpectedly causing these xpath tests to fail where as your tests around the orchestration will be more difficult to troubleshoot and workout the cause of the problem.     Sample Link The sample is available from the following link: http://code.msdn.microsoft.com/testbtsxpathfunction     Other Tools On the subject of using the xpath function, if you don't already use it the below tool is very useful for creating your xpath statements (thanks BizBert) http://www.bizbert.com/bizbert/2007/11/30/XPath+The+Hidden+Language+Of+BizTalk.aspx

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• Early Z culling - Ogre

  - by teodron

  This question is concerned with how one can enable this "pixel filter" to work within an Ogre based app. Simply put, one can write two passes, the first without writing any colour values to the frame buffer lighting off colour_write off shading flat The second pass is the one that employs heavy pixel shader computations, hence it would be really nice to get rid of those hidden surface patches and not process them pixel-wise. This approach works, except for one thing: objects with alpha, such as billboard trees suffer in a peculiar way - from one side, they seem to capture the sky/background within their alpha region and ignore other trees/houses behind them, while viewed from the other side, they exhibit the desired behavior. To tackle the issue, I thought I could write a custom vertex shader in the first pass and offset the projected Z component of the vertex a little further away from its actual position, so that in the second pass there is a need to recompute correctly the pixels of the objects closest to the camera. This doesn't work at all, all surfaces are processed in the pixel shader and there is no performance gain. So, if anyone has done a similar trick with Ogre and alpha objects, kindly please help.

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• Coarse Collision Detection in highly dynamic environment

  - by Millianz

  I'm currently working a 3D space game with A LOT of dynamic objects that are all moving (there is pretty much no static environment). I have the collision detection and resolution working just fine, but I am now trying to optimize the collision detection (which is currently O(N^2) -- linear search). I thought about multiple options, a bounding volume hierarchy, a Binary Spatial Partitioning tree, an Octree or a Grid. I however need some help with deciding what's best for my situation. A grid seems unfeasible simply due to the space requirements and cache coherence problems. Since everything is so dynamic however, it seems to be that trees aren't ideal either, since they would have to be completely rebuilt every frame. I must admit I never implemented a physics engine that required spatial partitioning, do I indeed need to rebuild the tree every frame (assuming that everything is constantly moving) or can I update the trees after integrating? Advice is much appreciated - to give some more background: You're flying a space ship in an asteroid field, and there are lots and lots of asteroids and some enemy ships, all of which shoot bullets. EDIT: I came across the "Sweep an Prune" algorithm, which seems like the right thing for my purposes. It appears like the right mixture of fast building of the data structures involved and detailed enough partitioning. This is the best resource I can find: http://www.codercorner.com/SAP.pdf If anyone has any suggestions whether or not I'm going in the right direction, please let me know.

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• Type checking and recursive types (Writing the Y combinator in Haskell/Ocaml)

  - by beta

  When explaining the Y combinator in the context of Haskell, it's usually noted that the straight-forward implementation won't type-check in Haskell because of its recursive type. For example, from Rosettacode [1]: The obvious definition of the Y combinator in Haskell canot be used because it contains an infinite recursive type (a = a -> b). Defining a data type (Mu) allows this recursion to be broken. newtype Mu a = Roll { unroll :: Mu a -> a } fix :: (a -> a) -> a fix = \f -> (\x -> f (unroll x x)) $ Roll (\x -> f (unroll x x)) And indeed, the “obvious” definition does not type check: ?> let fix f g = (\x -> \a -> f (x x) a) (\x -> \a -> f (x x) a) g <interactive>:10:33: Occurs check: cannot construct the infinite type: t2 = t2 -> t0 -> t1 Expected type: t2 -> t0 -> t1 Actual type: (t2 -> t0 -> t1) -> t0 -> t1 In the first argument of `x', namely `x' In the first argument of `f', namely `(x x)' In the expression: f (x x) a <interactive>:10:57: Occurs check: cannot construct the infinite type: t2 = t2 -> t0 -> t1 In the first argument of `x', namely `x' In the first argument of `f', namely `(x x)' In the expression: f (x x) a (0.01 secs, 1033328 bytes) The same limitation exists in Ocaml: utop # let fix f g = (fun x a -> f (x x) a) (fun x a -> f (x x) a) g;; Error: This expression has type 'a -> 'b but an expression was expected of type 'a The type variable 'a occurs inside 'a -> 'b However, in Ocaml, one can allow recursive types by passing in the -rectypes switch: -rectypes Allow arbitrary recursive types during type-checking. By default, only recursive types where the recursion goes through an object type are supported. By using -rectypes, everything works: utop # let fix f g = (fun x a -> f (x x) a) (fun x a -> f (x x) a) g;; val fix : (('a -> 'b) -> 'a -> 'b) -> 'a -> 'b = <fun> utop # let fact_improver partial n = if n = 0 then 1 else n*partial (n-1);; val fact_improver : (int -> int) -> int -> int = <fun> utop # (fix fact_improver) 5;; - : int = 120 Being curious about type systems and type inference, this raises some questions I'm still not able to answer. First, how does the type checker come up with the type t2 = t2 -> t0 -> t1? Having come up with that type, I guess the problem is that the type (t2) refers to itself on the right side? Second, and perhaps most interesting, what is the reason for the Haskell/Ocaml type systems to disallow this? I guess there is a good reason since Ocaml also will not allow it by default even if it can deal with recursive types if given the -rectypes switch. If these are really big topics, I'd appreciate pointers to relevant literature. [1] http://rosettacode.org/wiki/Y_combinator#Haskell

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• Algorithm to infer tag hierarchy

  - by Tom

  I'm looking for an algorithm to infer a hierarchy from a set of tagged items. E.g. if the following items have the tags: 1 a 2 a,b 3 a,c 4 a,c,e 5 a,b 6 a,c 7 d 8 d,f Then I can construct an undirected graph (or graphs) by tallying the node weights and edge weights: node weights edge weights a 6 a-b 2 b 2 a-c 3 c 3 c-e 1 d 2 a-e 1 <-- this edge is parallel to a-c and c-e and not wanted e 1 d-f 1 f 1 The first problem is how to drop any redundant edges to get to the simplified graph? Note that it's only appropriate to remove that redundant a-e edge in this case because something is tagged as a-c-e, if that wasn't the case and the tag was a-e, that edge would have to remain. I suspect that means the removal of edges can only happen during the construction of the graph, not after everything has been tallied up. What I'd then like to do is identify the direction of the edges to create a directed graph (or graphs) and pick out root nodes to hopefully create a tree (or trees): trees a d // \\ | b c f \ e It seems like it could be a string algorithm - longest common subsequences/prefixes - or a tree/graph algorithm, but I am a little stuck since I don't know the correct terminology to search for it.

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• Generated 3d tree meshes

  - by Jari Komppa

  I did not find a question on these lines yet, correct me if I'm wrong. Trees (and fauna in general) are common in games. Due to their nature, they are a good candidate for procedural generation. There's SpeedTree, of course, if you can afford it; as far as I can tell, it doesn't provide the possibility of generating your tree meshes at runtime. Then there's SnappyTree, an online webgl based tree generator based on the proctree.js which is some ~500 lines of javascript. One could use either of above (or some other tree generator I haven't stumbled upon) to create a few dozen tree meshes beforehand - or model them from scratch in a 3d modeller - and then randomly mirror/scale them for a few more variants.. But I'd rather have a free, linkable tree mesh generator. Possible solutions: Port proctree.js to c++ and deal with the open source license (doesn't seem to be gpl, so could be doable; the author may also be willing to co-operate to make the license even more free). Roll my own based on L-systems. Don't bother, just use offline generated trees. Use some other method I haven't found yet.

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• Why create a Huffman tree per character instead of a Node?

  - by Omega

  For a school assignment we're supposed to make a Java implementation of a compressor/decompresser using Huffman's algorithm. I've been reading a bit about it, specially this C++ tutorial: http://www.cprogramming.com/tutorial/computersciencetheory/huffman.html In my program, I've been thinking about having Nodes that have the following properties: Total Frequency Character (if a leaf) Right child (if any) Left child (if any) Parent (if any) So when building the Huffman tree, it is just a matter of linking a node to others, etc. However, I'm a bit confused with the following quote (emphasis mine): First, every letter starts off as part of its own tree and the trees are ordered by the frequency of the letters in the original string. Then the two least-frequently used letters are combined into a single tree, and the frequency of that tree is set to be the combined frequency of the two trees that it links together. My question: why should I create a tree per letter, instead of just a node per letter and then do the linking later? I have not begun coding, I'm just studying the algorithm first, so I guess I'm missing an important detail. What is it?

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• Boolean checks with a single quadtree, or multiple quadtrees?

  - by Djentleman

  I'm currently developing a 2D sidescrolling shooter game for PC (think metroidvania but with a lot more happening at once). Using XNA. I'm utilising quadtrees for my spatial partitioning system. All objects will be encompassed by standard bounding geometry (box or sphere) with possible pixel-perfect collision detection implemented after geometry collision (depends on how optimised I can get it). These are my collision scenarios, with < representing object overlap (multiplayer co-op is the reason for the player<player scenario): Collision scenarios (true = collision occurs): Player <> Player = false Enemy <> Enemy = false Player <> Enemy = true PlayerBullet <> Enemy = true PlayerBullet <> Player = false PlayerBullet <> EnemyBullet = true PlayerBullet <> PlayerBullet = false EnemyBullet <> Player = true EnemyBullet <> Enemy = false EnemyBullet <> EnemyBullet = false Player <> Environment = true Enemy <> Environment = true PlayerBullet <> Environment = true EnemyBullet <> Environment = true Going off this information and the fact that were will likely be several hundred objects rendering on-screen at any given time, my question is as follows: Which method is likely to be the most efficient/optimised and why: Using a single quadtree with boolean checks for collision between the different types of objects. Using three quadtrees at once (player, enemy, environment), only testing the player and enemy trees against each other while testing both the player and enemy trees against the environment tree.

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