Whath is wrong with the Xpath expression? This compensation may impact how and where products appear on this site including, for example, the order in which they appear. The document can be created using either a free-threaded or a rental-threaded model. . Set getPage = Server . Provides control over how to bind the XML document to persistent data. DOMDocument DOMXpath store attributes like unique ids in php. An example of a ProgID is Msxml2.DOMDocument.6.0. [Listening to: The Verve Pipe - The Freshman (Special Version)]. An example of a symbolic name is CLSID_DOMDocument60. createElement Method They are DIFFERENT and using one vs. the other (depending GREATLY on how) can make a 7x to 10x diference in performance. Saving for retirement starting at 68 years old. I am looking for the most efficient object for this task. Let's look at the example below. The interesting things are: It worked well with MSXML::DOMDocument40 coclass, but MSXML . check out the. Find centralized, trusted content and collaborate around the technologies you use most. Example-Dim xmlhttp As Object Set xmlhttp = CreateObject("MSXML2. Persistence and the DOM, More info about Internet Explorer and Microsoft Edge. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. This is a name that is defined as a macro in a header file. IXMLDOMNode You cannot combine nodes or documents that are created using differing threading models. I am using this practice for the following reason: An Oldie but a Goodie: MSXML and FreeThreadedDomDocument vs. DomDocument. Asking for help, clarification, or responding to other answers. Is there something like Retr0bright but already made and trustworthy? If you are writing a single threaded application (or a multi-threaded application where only one thread accesses a DOM at one time), use the rental threaded model (Msxml2.DOMDocument.3.0 or Msxml2.DOMDocument.6.0). MATLAB command "fourier"only applicable for continous time signals or is it also applicable for discrete time signals? The document threading model is determined by the following settings. Only one object can be created: the document. Find centralized, trusted content and collaborate around the technologies you use most. In the list of available references, select from any of the following versions of MSXML you have installed and wish to reference in your VBA project: Microsoft XML, v 3.0. Notice that I am selecting the load to be performed synchronously and not validation be carried out on parsing the document. The following C/C++ example creates DOMDocument and queries for the other interfaces. Why are only 2 out of the 3 boosters on Falcon Heavy reused? Can I spend multiple charges of my Blood Fury Tattoo at once? Includes members for retrieving and creating all other XML objects. You can call the QueryInterface method on DOMDocument to get the following interfaces. The following methods always return E_NOTIMPL: Enables a host application to provide extra contextual information, such the base URL. If a creature would die from an equipment unattaching, does that creature die with the effects of the equipment? LLPSI: "Marcus Quintum ad terram cadere uidet.". Change your threads to use single-threaded apartments(COINIT_APARTMENTTHREADED) and then marshall interface pointers between your threads (See CoMarshalInterThreadInterfaceInStream). Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, First, you test an attribute and then an element. The fact that using MSXML2.DOMDocument.SelectNodes() selects nodes is because in this early version of MSXML the default selection language is not XPath but something called "XSL" (if I remember well) and it is not the standard, W3C XPath language. I need to use MSXML2.DOMDocument in my ASP page. When using Classic ASP and manipulating Xml within a single page request, you're working on a single thread -> Use DomDocument, When using Classic ASP and storing Xml in the Application Object or Session Object (which is a questionable practice, can affect performance, and is not recommend for the inexperienced) -> Use FreeThreadedDomDocument, There is not any good reason that I can think of to use FreeThreadedDomDocument in a Single Threaded Exe (unless you're marshalling it off somewhere). How can I get a huge Saturn-like ringed moon in the sky? What is the best way to show results of a multiple-choice quiz where multiple options may be right? Just do 2 steps as below.. 1. Somehow, xd.hasChildNodes return False, i.e . right-click->definition on MSXML2 shows me the object in the object browser. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. will not select any node, because in XPath 1.0 there are no > or < comparison operators for strings (only for numbers). The MSXML2.DOMDocument object allows you to easily traverse through an XML structure an extract any XML node and/or attribute needed. Horror story: only people who smoke could see some monsters. Reply; 13 years ago . Stack Overflow for Teams is moving to its own domain! A value of True for the ServerHTTPRequest property indicates that you should use the "thread-safe" ServerXMLHTTP component to load the document. The context is this - I have code that makes many calls to retrieve web pages. Microsoft XML, v 4.0 (if you have installed MSXML 4.0 separately). When developing applications, you might typically consider an interface separately from any CoClasses that implement it. Difference between Msxml2.DOMDocument and Msxml2.XMLHTTP, http://msdn.microsoft.com/en-us/library/aa468547.aspx, http://msdn.microsoft.com/en-us/library/windows/desktop/ms766487(v=vs.85).aspx, http://msdn.microsoft.com/en-us/library/windows/desktop/ms760218(v=vs.85).aspx, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned, 2022 Moderator Election Q&A Question Collection. If you use that symbolic name in your C++ program, it resolves to the GUID of the control. makes perfect sense, thanks for the point in the right direction. by bsmith123. Files that are very data-dense, such as an attribute - heavy XML - persisted ADO recordset, can end up more than twice the disk-file size when loaded into memory. In VBA I have the folowing expression: If I define the SourceXml as MSXML2.DOMDocument it retrieves a list with the desired nodes. The behavior of the two models is identical; rental-threaded documents exhibit better performance because the parser does not need to manage concurrent access among threads. Did Dick Cheney run a death squad that killed Benazir Bhutto? With Microsoft Xml Parser MSXML2 how to retrieve value of an attribute using XPath? An example of a symbolic name is CLSID_DOMDocument60. This is not fully implemented. .NET has much richer and highly nuanced XML support. The context is this - I have code that makes many calls to retrieve web pages. while XMLHTTP "Provides client-side protocol support for communication with HTTP servers.". Extract value of attribute node via XPath. Normally, interfaces and CoClasses might be documented separately and used independently of one another. Replies (1) Email updates; Last post was 24 Feb 2008 at 13:05 xml MacKinney, United States. Represents the top level of the XML source. Xpath works on "MSXML2.DOMDocument" but not on "MSXML2.DOMDocument60" [duplicate], String greater, less, and equal comparison in XmlDocument, blogs.msdn.com/b/xmlteam/archive/2006/10/23/, msdn.microsoft.com/en-us/library/ms754679%28v=vs.85%29.aspx, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned, 2022 Moderator Election Q&A Question Collection. Hi, For example, something like this: This seems to work the same way if I create an object using: Can anyone explain or point me to a reference that clearly outlines the differences (and intended usages) for each of those? XML is very powerful, but remember that even though it's easy to use [Xml.Load ("somexml.xml")] it's also easy to GREATLY slow your code down in VERY few lines of code. Proxy. After just wallowing through a project in classic ASP that relies heavily on MSXML, I basically, used your recommendations, but, I have a few questions regaring the dubiousness of FTDOM in the Application object. DOMDocument represents the top node in the tree. Using the default Microsoft.XMLDOM is safe in that it will work without having to . I still have the reference to Microsoft XML, v6.0. Set objXMLDoc = Server.CreateObject (" MSXML2 . All other objects are accessed or created from the document. An example of an inefficient operation would be to load a 3000k XML file into a DOM, then perform a SelectNodes("//somenode") in order to retrieve a single value. The MSXML header file and library are installed when installing the MSXML SDK. For example, something like this: Below we start by loading the XML document. :). Finding features that intersect QgsRectangle but are not equal to themselves using PyQGIS, Horror story: only people who smoke could see some monsters. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. XML is very powerful, but remember that even though it's easy to use [Xml.Load("somexml.xml")] it's also easy to GREATLY slow your code down in VERY few lines of code. 2. Only one object can be created: the document. Does activating the pump in a vacuum chamber produce movement of the air inside? Note: The fastest way to load an XML Document (assuming you're loading it into a DOM) The fastest way to load an XML document is to use the default "rental" threading model (which means the DOM document can be used by only one thread at a time) with validateOnParse, resolveExternals, and preserveWhiteSpace all disabled, like this in (for examplenote it could happily be in VBScript) Javascript: var doc = new ActiveXObject("MSXML2.DOMDocument"); doc.validateOnParse = false; doc.resolveExternals = false; doc.preserveWhiteSpace = false; doc.load("somexml.xml"); If you have an element-heavy XML document that contains a lot of white space between elements and stored in Unicode, it can actually be smaller in memory than on disk. The latest is 6.0 (AFAIK). I've noticed a lot of folks who still do COM development using MSXML (2, 3, or 4) and MSXML2.DOMDocument or MSXML2.FreeThreadedDOMDocument in wrongheaded ways. CreateObject("MSXML2.ServerXMLHTTP") getPage.Open "HEAD", URL, false , username , password which checks the URL using the username and password supplied.
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