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  • Expression Blend 4 available and training resources

    - by pluginbaby
    As you may know Expression Blend 4 has shipped! It is still part of Expression Studio, which now comes in 2 “flavors”: Expression Studio 4 Ultimate Expression Blend SketchFlow Expression Web + SuperPreview Expression Encoder Expression Design Expression Studio 4 Web Professional Expression Web + SuperPreview Expression Encoder Expression Design So the version you want for Silverlight is Expression Studio 4 Ultimate (because you can’t buy Expression Blend alone). Expression Blend is an awesome tool but might be difficult to approach at first, specially for people coming from Visual Studio… this tool target designers so it can takes time for a developer to get comfortable enough. Good news is the availability of a free “Blend Fundamentals Training” which contains plenty of resources to help you master Expression Blend in 5 days: http://www.microsoft.com/expression/resources/BlendTraining/   Also don’t forget the .toolbox: http://www.microsoft.com/design/toolbox/ This Microsoft website contains courses and tutorials to help you learn UI Design for Silverlight with Expression Blend.

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  • xpath query in a servlet gives exception

    - by user1401071
    I have a Document object initialized in the init() method of the servlet and use it in the doPost() method to service the requests. selectNodeList() xpath query gives exception when the servlet services many request at same time. The Exception is shown below: Caused by: javax.xml.transform.TransformerException: -1 at org.apache.xpath.XPath.execute(XPath.java:331) at org.apache.xpath.CachedXPathAPI.eval(CachedXPathAPI.java:328) at org.apache.xpath.CachedXPathAPI.selectNodeList(CachedXPathAPI.java:255) at org.apache.xpath.CachedXPathAPI.selectNodeList(CachedXPathAPI.java:235) at com.pro.bb.servlets.Controller.getDataOrPeriodForReport(Controller.java:511) ... 23 more Caused by: java.lang.ArrayIndexOutOfBoundsException: -1 at org.apache.xpath.XPathContext.pushCurrentNode(XPathContext.java:808) at org.apache.xpath.axes.PredicatedNodeTest.acceptNode(PredicatedNodeTest.java:447) at org.apache.xpath.axes.AxesWalker.nextNode(AxesWalker.java:409) at org.apache.xpath.axes.WalkingIterator.nextNode(WalkingIterator.java:176) at org.apache.xpath.axes.NodeSequence.nextNode(NodeSequence.java:320) at org.apache.xpath.axes.NodeSequence.runTo(NodeSequence.java:474) at org.apache.xpath.axes.NodeSequence.setRoot(NodeSequence.java:257) at org.apache.xpath.axes.LocPathIterator.execute(LocPathIterator.java:257) at org.apache.xpath.XPath.execute(XPath.java:308) Help me sort out the issue.

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  • Can I use relative XPath expressions in libxml2?

    - by brbr
    I am wondering whether it is possible to use relative XPath expressions in libxml2. This is from the javax.xml.xpath API and I would like to do the similar thing using libxml2: Node widgetNode = (Node) xpath.evaluate(expression, document, XPathConstants.NODE); With a reference to the element, a relative XPath expression can now written to select the child element: XPath xpath = XPathFactory.newInstance().newXPath(); String expression = "manufacturer"; Node manufacturerNode = (Node) xpath.evaluate(expression, **widgetNode**, XPathConstants.NODE);

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  • xpath find if node exists

    - by EddyR
    Using a xpath query how do you find if a node (tag) exists at all? For example if I needed to make sure a website page has the correct basic structure like /html/body and /html/head/title

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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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  • how to use nokogiri methods .xpath & .at_xpath

    - by Radek
    I'm learning how to use nokogiri and few questions came to me based on the code below require 'rubygems' require 'mechanize' post_agent = WWW::Mechanize.new post_page = post_agent.get('http://www.vbulletin.org/forum/showthread.php?t=230708') puts "\nabsolute path with tbody gives nil" puts post_page.parser.xpath('/html/body/div/div/div/div/div/table/tbody/tr/td/div[2]').xpath('text()').to_s.strip.inspect puts "\n.at_xpath gives an empty string" puts post_page.parser.at_xpath("//div[@id='posts']/div/table/tr/td/div[2]").at_xpath('text()').to_s.strip.inspect puts "\ntwo lines solution with .at_xpath gives an empty string" rows = post_page.parser.xpath("//div[@id='posts']/div/table/tr/td/div[2]") puts rows[0].at_xpath('text()').to_s.strip.inspect puts puts "two lines working code" rows = post_page.parser.xpath("//div[@id='posts']/div/table/tr/td/div[2]") puts rows[0].xpath('text()').to_s.strip puts "\none line working code" puts post_page.parser.xpath("//div[@id='posts']/div/table/tr/td/div[2]")[0].xpath('text()').to_s.strip puts "\nanother one line code" puts post_page.parser.at_xpath("//div[@id='posts']/div/table/tr/td/div[2]").xpath('text()').to_s.strip puts "\none line code with full path" puts post_page.parser.xpath("/html/body/div/div/div/div/div/table/tr/td/div[2]")[0].xpath('text()').to_s.strip is it better to use // or / in xpath? @AnthonyWJones says that 'the use of an unprefixed //' is not so good idea I had to remove tbody from any working xpath otherwise I got 'nil' result. How is possible to remove an element from the xpath to get things work? do I have to use .xpath twice to extract data if not using full xpath? why I cannot make .at_xpath working to extract data? it works nicely here what is the difference?

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  • Microsoft Expression Web 3 clipboard bug

    - by Ghostrider
    There seems to be a rather annoying bug in MS Expression Web 3 (or perhaps an incompatibility with something else I have installed). Quite often HTML code editor would refuse to copy things into clipboard. You select some text, press Ctrl-C, Ctrl-Insert or use context menu and nothing happens. Then in 10..15 seconds it would start working again... Then again it would not work. It's rather annoying. Does anyone else have such a problem or knows how to fix it? I'm running Microsoft Expression Web 3 Service Pack 1 Version 3.0.3813.0 on Windows 7 Ultimate x64 with all latest updates and patches. I have Russian keyboard layout installed. Other than that my system is pretty much plain vanilla.

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  • XPath to find element based on another XPath element

    - by martymcfly
    Hi, I have an Java AST and I try to find a variable inside it via XPath. Lets say the variable is called 'foobar' I could use //VariableDeclarator/VariableDeclaratorId[@Image='foobar'] but what if I dont know the text 'foobar', but want to read it from another element //VariableDeclarator/VariableDeclaratorId[@Image=//SynchronizedStatement/Expression/PrimaryExpression/PrimaryPrefix/Name] the 'Name' node has the information 'foobar' in @Image, but PrimaryPrefix/Name[@Image] does not work. How must I rewrite the condition //SynchronizedStatement/Expression/PrimaryExpression/PrimaryPrefix/Name that it is the same as @Image='foobar' ? Thanks

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  • Why doesn't libxml2 support XPath 2.0?

    - by Peter Krauss
    Libxml2 is the faster, stable and most popular "open DOM engine"... And the "XML C parser and toolkit of Gnome". The initial release of Libxml2 was September 1999, 13 years ago. XPath v1.0 was also released at 1999. XPath v2.0 became a recommendation on January 2007, 6 years ago. We can suppose that the Libxml2 community have time and people to develop a XPath2... So, what is the problem? Why doesn't libxml2 (or a "libxml2 fork" or an "experimental lib"!) support XPath 2.0? Some raised hypotheses to discussion at answers, Because Libxml2 community (and Gnome community) dislikes and have no motivation to develop something to XPath2 or xQuery. 1.1. XPath2 needs (by mathematical proof) a very heavy parser, much slower, etc. that is not suitable to real-world Libxml2 applications. 1.2. Other "ideologic" dislikes/motivations. Because it is written with C, and for XPath2 is better to develop with C++. Because the above hypothesis of "Libxml2 community have time and people" is false. Because XPath2 became stable in 2010 with its "Second Edition" release, and ~2.5 years is not (?) enough time.

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  • Xpath question Xml Xpath

    - by Ibrar Afzal
    I need an xpath expression that would return the value of I need to get the value of this node. the value to extract is my xpath expression is //rates/rate[loantype='30-Year Fixed Rate'] The issue hre is that there are three value each node has a subtype element. Beside fileter for loantype I also need to filter for subtype. I am not sure how to do it in xpath. I have the following xml 40-Year Fixed Rate A 3 5.375 1.000 5.491 0 1 40-Year Fixed Rate B 5.500 0.500 5.579 0 1 40-Year Fixed Rate C 5.625 0.000 5.667 0 1 30-Year Fixed Rate A 3 5.000 1.000 5.134 0 1 30-Year Fixed Rate B 5.125 0.500 5.215 0 1 30-Year Fixed Rate C 5.250 0.000 5.297 0 1 20-Year Fixed Rate A 3 4.875 1.000 5.055 0 1 20-Year Fixed Rate B 5.000 0.500 5.121 0 1 20-Year Fixed Rate C 5.125 0.000 5.187 0 1 15-Year Fixed Rate A 3 4.250 1.000 4.467 0 1 15-Year Fixed Rate B 4.375 0.500 4.512 0 1 15-Year Fixed Rate C 4.500 0.000 4.570 0 1 10-Year Fixed Rate A 3 4.125 1.000 4.435 0 1 10-Year Fixed Rate B 4.250 0.500 4.454 0 1 10-Year Fixed Rate C 4.375 0.000 4.473 0 1 High-Balance 15-Year Fixed Rate D 3 4.250 1.000 4.461 0 1 High-Balance 15-Year Fixed Rate B 4.375 0.500 4.512 0 1 High-Balance 15-Year Fixed Rate C 4.500 0.000 4.563 0 1 High-Balance 30-Year Fixed Rate D 3 5.000 1.000 5.130 0 1 High-Balance 30-Year Fixed Rate B 5.125 0.500 5.211 0 1 High-Balance 30-Year Fixed Rate C 5.250 0.000 5.293 0 1 30-Year Fixed Rate Jumbo A 2 5.125 1.000 5.254 1 1 30-Year Fixed Rate Jumbo B 5.250 0.500 5.336 1 1 30-Year Fixed Rate Jumbo C 5.375 0.000 5.417 1 1 -- 15-Year Fixed Rate Jumbo A 2 5.000 1.000 5.220 1 1 15-Year Fixed Rate Jumbo B 5.125 0.500 5.270 1 1 15-Year Fixed Rate Jumbo C 5.250 0.000 5.320 1 1 -- 3/1 30-Year Adjustable Rate A 3 3.625 1.000 3.431 0 0 3/1 30-Year Adjustable Rate B 3.875 0.500 3.448 0 0 3/1 30-Year Adjustable Rate C 4.125 0.000 3.465 0 0 3/1 40-Year Adjustable Rate A 3 3.875 1.000 3.438 0 0 3/1 40-Year Adjustable Rate B 4.125 0.500 3.453 0 0 3/1 40-Year Adjustable Rate C 4.375 0.000 3.467 0 0 5/1 30-Year Adjustable Rate A 3 3.375 1.000 3.401 0 0 5/1 30-Year Adjustable Rate B 3.625 0.500 3.457 0 0 5/1 30-Year Adjustable Rate C 3.875 0.000 3.514 0 0 5/1 40-Year Adjustable Rate A 3 3.625 1.000 3.441 0 0 5/1 40-Year Adjustable Rate B 3.875 0.500 3.481 0 0 5/1 40-Year Adjustable Rate C 4.125 0.000 3.531 0 0 7/1 30-Year Adjustable Rate A 3 3.875 1.000 3.670 0 0 7/1 30-Year Adjustable Rate B 4.125 0.500 3.755 0 0 7/1 30-Year Adjustable Rate C 4.375 0.000 3.841 0 0 10/1 30-Year Adjustable Rate A 3 4.375 1.000 4.092 0 0 10/1 30-Year Adjustable Rate B 4.625 0.500 4.217 0 0 10/1 30-Year Adjustable Rate C 4.875 0.000 4.342 0 0 -- 2/2 ARM 30-Year (Purchase only) DH 5.250 0.000 3.709 0 0 -- High-Balance 5/1 30-Year Adjustable Rate D 3 3.375 1.000 3.366 0 0 High-Balance 5/1 30-Year Adjustable Rate B 3.625 0.500 3.404 0 0 High-Balance 5/1 30-Year Adjustable Rate C 3.875 0.000 3.454 0 0 High-Balance 7/1 30-Year Adjustable Rate D 3 3.875 1.000 3.670 0 0 High-Balance 7/1 30-Year Adjustable Rate B 4.125 0.500 3.755 0 0 High-Balance 7/1 30-Year Adjustable Rate C 4.375 0.000 3.841 0 0 3/1 30-Year Jumbo Adjustable Rate A 2 4.875 1.000 3.719 1 0 3/1 30-Year Jumbo Adjustable Rate B 5.000 0.500 3.708 1 0 3/1 30-Year Jumbo Adjustable Rate C 5.125 0.000 3.704 1 0 -- 3/1 40-Year Jumbo Adjustable Rate A 2 5.250 1.000 3.733 1 0 3/1 40-Year Jumbo Adjustable Rate B 5.375 0.500 3.727 1 0 3/1 40-Year Jumbo Adjustable Rate C 5.500 0.000 3.725 1 0 -- 5/1 30-Year Jumbo Adjustable Rate A 3 4.375 1.000 3.791 1 0 5/1 30-Year Jumbo Adjustable Rate B 4.500 0.500 3.803 1 0 5/1 30-Year Jumbo Adjustable Rate C 4.625 0.000 3.814 1 0 5/1 40-Year Jumbo Adjustable Rate A 2 5.000 1.000 3.922 1 0 5/1 40-Year Jumbo Adjustable Rate B 5.125 0.500 3.925 1 0 5/1 40-Year Jumbo Adjustable Rate C 5.250 0.000 3.936 1 0 -- 7/1 30-Year Jumbo Adjustable Rate A 3 4.950 1.000 4.261 1 0 7/1 30-Year Jumbo Adjustable Rate B 5.075 0.500 4.286 1 0 7/1 30-Year Jumbo Adjustable Rate C 5.200 0.000 4.311 1 0 2/2 ARM 30-Year Jumbo (Purchase only) DH 6.500 0.000 4.260 1 0 -- 30 Due in 7 Fixed Rate JUMBO Balloon A 6.375 1.000 6.613 1 0 30 Due in 7 Fixed Rate JUMBO Balloon B 6.500 0.500 6.625 1 0 40 due in 7 Fixed Rate offer1 5.250 0.000 5.374 0 0 1 40 Due in 7 Fixed Rate JUMBO Balloon offer2 6.500 0.000 6.625 1 0 1 Interest Only HELOC A To 80% LTV 3.250 0 1 Home Equity Loan - 7Yrs A Up to $100,000.00 Up to 75% LTV 6.000 6.000 0 2 Home Equity Loan - 7Yrs A $100,000.01 - $250,000.00 Up to 75% LTV 6.00 6.153 0 2 Home Equity Loan - 7Yrs A Up to $100,000.00 Up to 80% LTV 6.250 6.250 0 2 Home Equity Loan - 7Yrs A $100,000.01 - $250,000.00 Up to 80% LTV 6.25 6.403 0 2 Home Equity Loan - 7Yrs B $100,000.01 - $250,000.00 Up to 90% LTV 6.99 7.145 0 2 Home Equity Loan - 10,15Yrs C $5,000-$250,000.00 To 75% LTV 6.50 6.612 0 2 Home Equity Loan - 10,15Yrs C $5,000-$250,000.00 To 80% LTV 6.75 6.863 0 2 Home Equity Loan - 10,15Yrs D $5,000-$250,000.00 Up to 90% LTV 7.50 7.614 0 2 Home Equity Loan - 20Yrs E $5,000-$250,000.00 To 75% LTV 7.50 7.566 0 2 Home Equity Loan - 20Yrs E $5,000-$250,000.00 To 80% LTV 7.75 7.817 0 2 Home Equity Loan - 20Yrs F $5,000-$250,000.00 Up to 90% LTV 8.50 8.569 0 2 Equity Edge $5,000-$25,000.00 Up to 125% LTV 12.00 12.188 Current Index 0.350 Prime Index 3.250 03/26/2010

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  • The XPath @root-node-position attribute info

    - by Igor Savinkin
    I couldn't find the @root-node-position XPath attribute info. Would you give me a link of where i can read about it? Is it XPath 2.0? The code (not mine) is ../preceding-sibling::div[1]/div[@root-node-position]/div applied to this HTML: <div class="left"> <div class='prod2'> <div class='name'>Dell Latitude D610-1.73 Laptop Wireless Computer </div>2 GHz Intel Pentium M, 1 GB DDR2 SDRAM, 40 GB </div> <div class='prod1'> <div class='name'>Samsung Chromebook (Wi-Fi, 11.6-Inch) </div>1.7 GHz, 2 GB DDR3 SDRAM, 16 GB </div> </div> <div class="right"> <div class='price2'>$239.95</div> <div class='price1 best'>$249.00</div> </div> Firstly i fetch a price text under class='right' with this query : //DIV[contains(@class,'best')] and then i apply the above mentioned XPath with @root-node-attribute under class='left' to retrieve the rest of the record info.

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  • Short hand for number of tags having lengthier [and almost same] Xpath

    - by infant programmer
    For example : this is an xslt <xsl:template match="/root/sub-root/parent/child/grand_child/dummy1/dummy2/dummy3/dummy4/node_1 |/root/sub-root/parent/child/grand_child/dummy1/dummy2/dummy3/dummy4/node_2 |/root/sub-root/parent/child/grand_child/dummy1/dummy2/dummy3/dummy4/node_3 . . |/root/sub-root/parent/child/grand_child/dummy1/dummy2/dummy3/dummy4/node_N"/> In the above code can I use the XPath /root/sub-root/parent/child/grand_child/dummy1/dummy2/dummy3/dummy4 only once [use the braces or whatever] and reduce the bulkiness of the code? As you can see, all the nodes are siblings of each-other, so except their name their Xpath is same. Is there any short-hand property ? Does XSLT 1.0 (or Xpath1.0) allows it?

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  • Expression Blend 4 available and training resources

    As you may know Expression Blend 4 has shipped! It is still part of Expression Studio, which now comes in 2 flavors: Expression Studio 4 Ultimate Expression Blend SketchFlow Expression Web + SuperPreview Expression Encoder Expression Design Expression Studio 4 Web Professional Expression Web + SuperPreview Expression Encoder Expression Design So the version you want for Silverlight is Expression Studio 4 Ultimate (because you cant...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • More SharePoint 2010 Expression Builders

    - by Ricardo Peres
    Introduction Following my last post, I decided to publish the whole set of expression builders that I use with SharePoint. For all who don’t know about expression builders, they allow us to employ a declarative approach, so that we don’t have to write code for “gluing” things together, like getting a value from the query string, the page’s underlying SPListItem or the current SPContext and assigning it to a control’s property. These expression builders are for some quite common scenarios, I use them quite often, and I hope you find them useful as well. SPContextExpression This expression builder allows us to specify an expression to be processed on the SPContext.Current property object. For example: 1: <asp:Literal runat="server" Text=“<%$ SPContextExpression:Site.RootWeb.Lists[0].Author.LoginName %>”/> It is identical to having the following code: 1: String authorName = SPContext.Current.Site.RootWeb.Lists[0].Author.LoginName; SPFarmProperty Returns a property stored on the farm level: 1: <asp:Literal runat="server" Text="<%$ SPFarmProperty:SomeProperty %>"/> Identical to: 1: Object someProperty = SPFarm.Local.Properties["SomeProperty"]; SPField Returns the value of a selected page’s list item field: 1: <asp:Literal runat="server" Text="<%$ SPField:Title %>"/> Does the same as: 1: String title = SPContext.Current.ListItem["Title"] as String; SPIsInAudience Checks if the current user belongs to an audience: 1: <asp:CheckBox runat="server" Checked="<%$ SPIsInAudience:SomeAudience %>"/> Equivalent to: 1: AudienceManager audienceManager = new AudienceManager(SPServiceContext.Current); 2: Audience audience = audienceManager.Audiences["SomeAudience"]; 3: Boolean isMember = audience.IsMember(SPContext.Current.Web.User.LoginName); SPIsInGroup Checks if the current user belongs to a group: 1: <asp:CheckBox runat="server" Checked="<%$ SPIsInGroup:SomeGroup %>"/> The equivalent C# code is: 1: SPContext.Current.Web.CurrentUser.Groups.OfType<SPGroup>().Any(x => String.Equals(x.Name, “SomeGroup”, StringComparison.OrdinalIgnoreCase)); SPProperty Returns the value of a user profile property for the current user: 1: <asp:Literal runat="server" Text="<%$ SPProperty:LastName %>"/> Where the same code in C# would be: 1: UserProfileManager upm = new UserProfileManager(SPServiceContext.Current); 2: UserProfile u = upm.GetUserProfile(false); 3: Object property = u["LastName"].Value; SPQueryString Returns a value passed on the query string: 1: <asp:GridView runat="server" PageIndex="<%$ SPQueryString:PageIndex %>" /> Is equivalent to (no SharePoint code this time): 1: Int32 pageIndex = Convert.ChangeType(typeof(Int32), HttpContext.Current.Request.QueryString["PageIndex"]); SPWebProperty Returns the value of a property stored at the site level: 1: <asp:Literal runat="server" Text="<%$ SPWebProperty:__ImagesListId %>"/> You can get the same result as: 1: String imagesListId = SPContext.Current.Web.AllProperties["__ImagesListId"] as String; Code OK, let’s move to the code. First, a common abstract base class, mainly for inheriting the conversion method: 1: public abstract class SPBaseExpressionBuilder : ExpressionBuilder 2: { 3: #region Protected static methods 4: protected static Object Convert(Object value, PropertyInfo propertyInfo) 5: { 6: if (value != null) 7: { 8: if (propertyInfo.PropertyType.IsAssignableFrom(value.GetType()) == false) 9: { 10: if (propertyInfo.PropertyType.IsEnum == true) 11: { 12: value = Enum.Parse(propertyInfo.PropertyType, value.ToString(), true); 13: } 14: else if (propertyInfo.PropertyType == typeof(String)) 15: { 16: value = value.ToString(); 17: } 18: else if ((typeof(IConvertible).IsAssignableFrom(propertyInfo.PropertyType) == true) && (typeof(IConvertible).IsAssignableFrom(value.GetType()) == true)) 19: { 20: value = System.Convert.ChangeType(value, propertyInfo.PropertyType); 21: } 22: } 23: } 24:  25: return (value); 26: } 27: #endregion 28:  29: #region Public override methods 30: public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 31: { 32: if (String.IsNullOrEmpty(entry.Expression) == true) 33: { 34: return (new CodePrimitiveExpression(String.Empty)); 35: } 36: else 37: { 38: return (new CodeMethodInvokeExpression(new CodeMethodReferenceExpression(new CodeTypeReferenceExpression(this.GetType()), "GetValue"), new CodePrimitiveExpression(entry.Expression.Trim()), new CodePropertyReferenceExpression(new CodeArgumentReferenceExpression("entry"), "PropertyInfo"))); 39: } 40: } 41: #endregion 42:  43: #region Public override properties 44: public override Boolean SupportsEvaluate 45: { 46: get 47: { 48: return (true); 49: } 50: } 51: #endregion 52: } Next, the code for each expression builder: 1: [ExpressionPrefix("SPContext")] 2: public class SPContextExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String expression, PropertyInfo propertyInfo) 6: { 7: SPContext context = SPContext.Current; 8: Object expressionValue = DataBinder.Eval(context, expression.Trim().Replace('\'', '"')); 9:  10: expressionValue = Convert(expressionValue, propertyInfo); 11:  12: return (expressionValue); 13: } 14:  15: #endregion 16:  17: #region Public override methods 18: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 19: { 20: return (GetValue(entry.Expression, entry.PropertyInfo)); 21: } 22: #endregion 23: }   1: [ExpressionPrefix("SPFarmProperty")] 2: public class SPFarmPropertyExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String propertyName, PropertyInfo propertyInfo) 6: { 7: Object propertyValue = SPFarm.Local.Properties[propertyName]; 8:  9: propertyValue = Convert(propertyValue, propertyInfo); 10:  11: return (propertyValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: }   1: [ExpressionPrefix("SPField")] 2: public class SPFieldExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String fieldName, PropertyInfo propertyInfo) 6: { 7: Object fieldValue = SPContext.Current.ListItem[fieldName]; 8:  9: fieldValue = Convert(fieldValue, propertyInfo); 10:  11: return (fieldValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: }   1: [ExpressionPrefix("SPIsInAudience")] 2: public class SPIsInAudienceExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String audienceName, PropertyInfo info) 6: { 7: Debugger.Break(); 8: audienceName = audienceName.Trim(); 9:  10: if ((audienceName.StartsWith("'") == true) && (audienceName.EndsWith("'") == true)) 11: { 12: audienceName = audienceName.Substring(1, audienceName.Length - 2); 13: } 14:  15: AudienceManager manager = new AudienceManager(); 16: Object value = manager.IsMemberOfAudience(SPControl.GetContextWeb(HttpContext.Current).CurrentUser.LoginName, audienceName); 17:  18: if (info.PropertyType == typeof(String)) 19: { 20: value = value.ToString(); 21: } 22:  23: return(value); 24: } 25:  26: #endregion 27:  28: #region Public override methods 29: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 30: { 31: return (GetValue(entry.Expression, entry.PropertyInfo)); 32: } 33: #endregion 34: }   1: [ExpressionPrefix("SPIsInGroup")] 2: public class SPIsInGroupExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String groupName, PropertyInfo info) 6: { 7: groupName = groupName.Trim(); 8:  9: if ((groupName.StartsWith("'") == true) && (groupName.EndsWith("'") == true)) 10: { 11: groupName = groupName.Substring(1, groupName.Length - 2); 12: } 13:  14: Object value = SPControl.GetContextWeb(HttpContext.Current).CurrentUser.Groups.OfType<SPGroup>().Any(x => String.Equals(x.Name, groupName, StringComparison.OrdinalIgnoreCase)); 15:  16: if (info.PropertyType == typeof(String)) 17: { 18: value = value.ToString(); 19: } 20:  21: return(value); 22: } 23:  24: #endregion 25:  26: #region Public override methods 27: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 28: { 29: return (GetValue(entry.Expression, entry.PropertyInfo)); 30: } 31: #endregion 32: }   1: [ExpressionPrefix("SPProperty")] 2: public class SPPropertyExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String propertyName, System.Reflection.PropertyInfo propertyInfo) 6: { 7: SPServiceContext serviceContext = SPServiceContext.GetContext(HttpContext.Current); 8: UserProfileManager upm = new UserProfileManager(serviceContext); 9: UserProfile up = upm.GetUserProfile(false); 10: Object propertyValue = (up[propertyName] != null) ? up[propertyName].Value : null; 11:  12: propertyValue = Convert(propertyValue, propertyInfo); 13:  14: return (propertyValue); 15: } 16:  17: #endregion 18:  19: #region Public override methods 20: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 21: { 22: return (GetValue(entry.Expression, entry.PropertyInfo)); 23: } 24: #endregion 25: }   1: [ExpressionPrefix("SPQueryString")] 2: public class SPQueryStringExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String parameterName, PropertyInfo propertyInfo) 6: { 7: Object parameterValue = HttpContext.Current.Request.QueryString[parameterName]; 8:  9: parameterValue = Convert(parameterValue, propertyInfo); 10:  11: return (parameterValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: }   1: [ExpressionPrefix("SPWebProperty")] 2: public class SPWebPropertyExpressionBuilder : SPBaseExpressionBuilder 3: { 4: #region Public static methods 5: public static Object GetValue(String propertyName, PropertyInfo propertyInfo) 6: { 7: Object propertyValue = SPContext.Current.Web.AllProperties[propertyName]; 8:  9: propertyValue = Convert(propertyValue, propertyInfo); 10:  11: return (propertyValue); 12: } 13:  14: #endregion 15:  16: #region Public override methods 17: public override Object EvaluateExpression(Object target, BoundPropertyEntry entry, Object parsedData, ExpressionBuilderContext context) 18: { 19: return (GetValue(entry.Expression, entry.PropertyInfo)); 20: } 21: #endregion 22: } Registration You probably know how to register them, but here it goes again: add this following snippet to your Web.config file, inside the configuration/system.web/compilation/expressionBuilders section: 1: <add expressionPrefix="SPContext" type="MyNamespace.SPContextExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 2: <add expressionPrefix="SPFarmProperty" type="MyNamespace.SPFarmPropertyExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 3: <add expressionPrefix="SPField" type="MyNamespace.SPFieldExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 4: <add expressionPrefix="SPIsInAudience" type="MyNamespace.SPIsInAudienceExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 5: <add expressionPrefix="SPIsInGroup" type="MyNamespace.SPIsInGroupExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 6: <add expressionPrefix="SPProperty" type="MyNamespace.SPPropertyExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 7: <add expressionPrefix="SPQueryString" type="MyNamespace.SPQueryStringExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> 8: <add expressionPrefix="SPWebProperty" type="MyNamespace.SPWebPropertyExpressionBuilder, MyAssembly, Culture=neutral, Version=1.0.0.0, PublicKeyToken=xxx" /> I’ll leave it up to you to figure out the best way to deploy this to your server!

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  • Express XPath as an expression tree

    - by 47d_
    If I have an XPath query like NodeA/NodeB[@WIDTH and not(@WIDTH="20")] | NodeC[@WIDTH and not(@WIDTH="20")]/NodeD Is there any API available to visualize this XPath query as a stack of atomic expressions, something like (following is generic) Get results of NodeA, call it "first set" Get results of NodeB from "first set" Filter where [@WIDTH and not(@WIDTH="20")] Filter NodeD, call this "node d for B" Get results of NodeC from "first set" Filter where [@WIDTH and not(@WIDTH="20")] Filter NodeD, call this "node d for C" Combine "node d for B" and "node d for C" I am trying to see if we can convert the XPath expression into custom expression which is close to english and vice versa. If no API is available, what would be the best approach? Thanks in advance.

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  • VBScript and Xpath excluding duplicates [closed]

    - by Malachi
    I am trying to pull names from an XML Document using a vbscript. XML Document structure <Aliases> <Alias PartyType="DF" CaseID="000000" NameType=""> Name Name</Alias> <Alias PartyType="DF" CaseID="000000" NameType=""> Name Name</Alias> <Alias PartyType="DF" CaseID="000000" NameType=""> Name Name</Alias> ... </Aliases> the XML File might have 100 rows with the same name coming from several different CaseID's because for this part of my vbscript I am trying to pull all the different Names from all cases, but here is the issue, I don't want to return duplicates. is there a way to do this with an xPath Expression or should I try to do this with VBScript? EDIT I am pretty sure that I am going to have to do this with VBScript. Would it be Faster and more efficient to solve this issue in VBScript, xPath, or in populating the XML I am retrieving information from ( this might prove more difficult than the other two options ) I am also asking a Similar question on stackoverflow

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  • XPath select certain amount of levels only

    - by Psytronic
    If I have an xml structure like this <root <sub <node / <node / </sub <sub <node / <sub <sub <sub <node / </sub </sub <sub <sub <sub <node / </sub <node / </sub </sub <node / <node / </root Is there an xpath syntax which will only select the first three levels of nodes? so it will collect <root <sub <node / <node / </sub <sub / <sub <sub / </sub <sub <sub / </sub <node / <node / </root Thanks, Psy

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  • How to simplify this Xpath expression ?

    - by Stephan
    Hi , I have the following XML code : <root> <a><l_desc/></a> <b><l_desc>foo</l_desc></b> <c><l_desc>bar</l_desc></c> </root> I want to match the l_desc nodes with a or b nodes as parent. For now, i use this xpath expression : //a/l_desc/.. | //b/l_desc/.. I would prefer writing something like this : //(a|b)/l_desc/.. Unfortunately, this expression is invalid. Do you have any idea for reducing the first expression ? Stéphan

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  • XPATH Query: How to get two elements?

    - by Damiano
    Hello My HTML code is: <table> <tr> <td class="data1"><p>1</td></td> <td class="data1"><p>2</td></td> <td class="data1"><p>3</td></td> <td class="data1"><p>4</td></td> </tr> <tr> <td class="data1"><p>5</td></td> <td class="data1"><p>6</td></td> <td class="data1"><p>7</td></td> <td class="data1"><p>8</td></td> </tr> </table> My query is: xpath='//tr//td[@class="data1"][4]/p' The results is: <p>4</p> <p>8</p> The results is correct! but, if I want to get example: <p>3</p> <p>4</p> <p>7</p> <p>8</p> So [3]/p and [4]/p How to get these two elements each <tr> ? Thank you so much!

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  • Dynamic Grouping and Columns

    - by Tim Dexter
    Some good collaboration between myself and Kan Nishida (Oracle BIP Consulting) over at bipconsulting on a question that came in yesterday to an internal mailing list. Is there a way to allow columns to be place into a template dynamically? This would be similar to the Answers Column selector. A customer has said Crystal can do this and I am trying to see how BI Pub can do the same. Example: Report has Regions as a dimension in a table, they want the user to select a parameter that will insert either Units or Dollars without having to create multiple templates. Now whether Crystal can actually do it or not is another question, can Publisher? Yes we can! Kan took the first stab. His approach, was to allow to swap out columns in a table in the report. Some quick steps: 1. Create a parameter from BIP server UI 2. Declare the parameter in RTF template You can check this post to see how you can declare the parameter from the server. http://bipconsulting.blogspot.com/2010/02/how-to-pass-user-input-values-to-report.html 3. Use the parameter value to condition if a particular column needs to be displayed or not. You can use <?if@column:.....?> syntax for Column level IF condition. The if@column is covered in user documentation. This would allow a developer to create a report with the parameter or multiple parameters to allow the user to pick a column to be included in the report. I took a slightly different tack, with the mention of the column selector in the Answers report I took that to mean that the user wanted to select more of a dimensional column and then have the report recalculate all its totals and subtotals based on that selected column. This is a little bit more involved and involves some smart XSL and XPATH expressions, but still very doable. The user can select a column as a parameter, that is passed to the template rather than the query. The parameter value that is actually passed is the element name that you want to regroup the data by. Inside the template we then reference that parameter value in our for-each-group loop. That's where we need the trixy XSL/XPATH code to get the regrouping to happen. At this juncture, I need to hat tip to Klaus, for his article on dynamic sorting that he wrote back in 2006. I basically took his sorting code and applied it to the for-each loop. You can follow both of Kan's first two steps above i.e. Create a parameter from BIP server UI - this just needs to be based on a 'list' type list of value with name/value pairs e.g. Department/DEPARTMENT_NAME, Job/JOB_TITLE, etc. The user picks the 'friendly' value and the server passes the element name to the template. Declare the parameter in RTF template - been here before lots of times right? <?param@begin:group1;'"DEPARTMENT_NAME"'?> I have used a default value so that I can test the funtionality inside the template builder (notice the single and double quotes.) Next step is to use the template builder to build a re-grouped report layout. It does not matter if its hard coded right now; we will add in the dynamic piece next. Once you have a functioning template that is re-grouping correctly. Open up the for-each-group field and modify it to use the parameter: <?for-each-group:ROW;./*[name(.) = $group1]?> 'group1' is my grouping parameter, declared above. We need the XPATH expression to find the column in the XML structure we want to group that matches the one passed by the parameter. Its essentially looking through the data tree for a match. We can show the actual grouping value in the report output with a similar XPATH expression <?./*[name(.) = $group1]?> In my example, I took things a little further so that I could have a dynamic label for the parameter value. For instance if I am using MANAGER as the parameter I want to show: Manager: Tim Dexter My XML elements are readable e.g. DEPARTMENT_NAME. Its a simple case of replacing the underscore with a space and then 'initcapping' the result: <?xdoxslt:init_cap(translate($group1,'_',' '))?> With this in place, the user can now select a grouping column in the BIP report viewer and the layout will re-group the data and any calculations based on that column. I built a group above report but you could equally build the group left version to truly mimic the Answers column selector. If you are interested you can get an example report, sample data and layout template here. Of course, you can combine Klaus' dynamic sorting, Kan's conditional column approach and this dynamic grouping to build a real kick ass report for users that will keep them happy for hours..

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  • Expression Studio 4 - without SketchFlow&hellip;

    - by mbcrump
    is kinda like an explosion with no “Ka-Boom”… I was excited to hear the news yesterday at Microsoft Teched that Expression Studio 4 had officially launched. MSDN subscribers could log in and download the full release. So, I logged into my MSDN account and started downloading Expression Studio 4 Premium thinking that I was only minutes away from trying out SketchFlow 4. To my dismay, I launched Blend 4 and noticed it did not say SketchFlow on the splash screen. So, I went to New Project and the template was not available. After some digging around on the net, I learned my premium MSDN subscription did not include SketchFlow and I would need to purchase the Ultimate Edition. Below is a excerpt directly from Microsoft: Q: What products are included in the Microsoft Expression Studio 4 Ultimate? A: Expression Studio 4 Ultimate is comprised of 4 products, Expression Web 4, Microsoft Expression Blend® 4 + SketchFlow, Expression Encoder 4 Pro and Expression Design 4. Expression Blend 4 includes SketchFlow in Expression Studio 4 Ultimate product only. Q: What products are included in the Microsoft Expression Studio 4 Premium? A: Expression Studio 4 Premium is comprised of 4 products, Expression Web 4, Microsoft Expression Blend 4, Expression Encoder 4 and Expression Design 4. Expression Studio 4 Premium is not available for retail purchase. Q: What products are included in the Microsoft Expression Studio 4 Web Professional? A: Expression Studio 4 Web Professional is comprised of 3 products, Expression Web 4, Expression Encoder 4 and Expression Design 4. As you can see, we got screwed on this deal and plenty of people are complaining: Kiran Says: 6.07.2010 at 5:07 PM No SketchFlow for Expression Studio 4 Premium? What a bumper for Microsoft Partners!! Martin Says: 6.07.2010 at 6:18 PM Why does Expression Professional Subscription not include upgrades and new releases of Expression Studio. Good question hey. I bought my subscription 5 days ago thinking I would get what i purchased but no Expression upgrades or new releases for me, what a waste of money. I think I am not the only long term user of this software that feels disgruntled. Sorry john just had to tell someone. shaggygi Says: 6.07.2010 at 7:31 PM SketchFlow NOT included in Studio 4? WTF! I repeat.... WT...Freaking.... F! This is totally unacceptable. My development team purchased VS 2010 Premium w/ MSDN with the impression by Adam Kinney, Scott Guthrie, etc. that this would be included in the Premium package or some sort of free upgrade. I understand this is a Marketing thing, but come on! I believe, at very least, this should have been explained in detail before this release. John Papa... as a rep to give feedback to the team... Please please and please.... tell powers-at-be to fix this problem. Sorry for the rant. Besides this issue, I believe it is a very good product:) Thanks Vaclav Elias Says: 6.08.2010 at 4:30 AM Well, I am also not happy that SketchFlow is only for the chosen ones :-) It is very nice product. Actually, kind of foundation for web development so they could really support any MSDN subscribers.. :-( I am hoping that Microsoft will make this right for all of us with MSDN premier subscriptions. In the meantime,  you can check out the 5 day training series available here.

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  • Creating Property Set Expression Trees In A Developer Friendly Way

    - by Paulo Morgado
    In a previous post I showed how to create expression trees to set properties on an object. The way I did it was not very developer friendly. It involved explicitly creating the necessary expressions because the compiler won’t generate expression trees with property or field set expressions. Recently someone contacted me the help develop some kind of command pattern framework that used developer friendly lambdas to generate property set expression trees. Simply putting, given this entity class: public class Person { public string Name { get; set; } } The person in question wanted to write code like this: var et = Set((Person p) => p.Name = "me"); Where et is the expression tree that represents the property assignment. So, if we can’t do this, let’s try the next best thing that is splitting retrieving the property information from the retrieving the value to assign o the property: var et = Set((Person p) => p.Name, () => "me"); And this is something that the compiler can handle. The implementation of Set receives an expression to retrieve the property information from and another expression the retrieve the value to assign to the property: public static Expression<Action<TEntity>> Set<TEntity, TValue>( Expression<Func<TEntity, TValue>> propertyGetExpression, Expression<Func<TValue>> valueExpression) The implementation of this method gets the property information form the body of the property get expression (propertyGetExpression) and the value expression (valueExpression) to build an assign expression and builds a lambda expression using the same parameter of the property get expression as its parameter: public static Expression<Action<TEntity>> Set<TEntity, TValue>( Expression<Func<TEntity, TValue>> propertyGetExpression, Expression<Func<TValue>> valueExpression) { var entityParameterExpression = (ParameterExpression)(((MemberExpression)(propertyGetExpression.Body)).Expression); return Expression.Lambda<Action<TEntity>>( Expression.Assign(propertyGetExpression.Body, valueExpression.Body), entityParameterExpression); } And now we can use the expression to translate to another context or just compile and use it: var et = Set((Person p) => p.Name, () => name); Console.WriteLine(person.Name); // Prints: p => (p.Name = “me”) var d = et.Compile(); d(person); Console.WriteLine(person.Name); // Prints: me It can even support closures: var et = Set((Person p) => p.Name, () => name); Console.WriteLine(person.Name); // Prints: p => (p.Name = value(<>c__DisplayClass0).name) var d = et.Compile(); name = "me"; d(person); Console.WriteLine(person.Name); // Prints: me name = "you"; d(person); Console.WriteLine(person.Name); // Prints: you Not so useful in the intended scenario (but still possible) is building an expression tree that receives the value to assign to the property as a parameter: public static Expression<Action<TEntity, TValue>> Set<TEntity, TValue>(Expression<Func<TEntity, TValue>> propertyGetExpression) { var entityParameterExpression = (ParameterExpression)(((MemberExpression)(propertyGetExpression.Body)).Expression); var valueParameterExpression = Expression.Parameter(typeof(TValue)); return Expression.Lambda<Action<TEntity, TValue>>( Expression.Assign(propertyGetExpression.Body, valueParameterExpression), entityParameterExpression, valueParameterExpression); } This new expression can be used like this: var et = Set((Person p) => p.Name); Console.WriteLine(person.Name); // Prints: (p, Param_0) => (p.Name = Param_0) var d = et.Compile(); d(person, "me"); Console.WriteLine(person.Name); // Prints: me d(person, "you"); Console.WriteLine(person.Name); // Prints: you The only caveat is that we need to be able to write code to read the property in order to write to it.

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  • Expression Tree Binary Expression for an 'In' operation

    - by Adam Driscoll
    I'm trying to build an expression tree (still) but getting further! I need to create a BinaryExpression to perform an 'In' comparison between a Member and a collection of items. Hence, the expression should return true if the member is contained within the items. This obviously does not exist: Expression.MakeBinary(ExpressionType.In, memberExpression, constantExpression); constantExpression is a ConstantExpression of type IEnumerable while memberExpression is a MemberExpression of type T. How would I create such an expression?

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