It can be safely stored in ASP Application state on IIS. I am using this practice for the following reason: An Oldie but a Goodie: MSXML and FreeThreadedDomDocument vs. DomDocument. Notice that I am selecting the load to be performed synchronously and not validation be carried out on parsing the document. . 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. In your case you might be able to use this XPath expression successfully: Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Replies (1) Email updates; Last post was 24 Feb 2008 at 13:05 xml MacKinney, United States. An example of a symbolic name is CLSID_DOMDocument60. Normally, interfaces and CoClasses might be documented separately and used independently of one another. They are DIFFERENT and using one vs. the other (depending GREATLY on how) can make a 7x to 10x diference in performance. will not select any node, because in XPath 1.0 there are no > or < comparison operators for strings (only for numbers). Files that have a more balanced ratio of elements to text content end up at about 1.25 to 1.5 the UCS-2 disk file size when in memory. 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? How to detect the namespaces in a foreign XML document using MSXML2? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. When you are using C++, you can create the control via its symbolic name. You use them when you want to share a document among multiple threads at the same time, avoiding the need for each of those threads to load it's own copy. DOMDocument represents the top node in the tree. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The latest is 6.0 (AFAIK). Free-threaded documents are generally slower than rental documents because of the extra thread safety work they do. This is a name that is defined as a macro in a header file. This object can be safely shared across any thread in the same process. 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. You cannot combine nodes or documents that are created using differing threading models. Dim doc As New MSXML2.DOMDocument. Example-Dim xmlhttp As Object Set xmlhttp = CreateObject("MSXML2. Can I spend multiple charges of my Blood Fury Tattoo at once? This page explains it better: http://msdn.microsoft.com/en-us/library/windows/desktop/ms760218(v=vs.85).aspx, DOMDocument "Represents the top node of the XML DOM tree." What does puncturing in cryptography mean. The following is my code: xml.asp: ===== <% dim sx sx="<root><a>text1</a>text2</root>" dim xd set xd=Server.CreateObject("MSXML2.DOMDocument") xd.loadXML(sx) Response.write xd.hasChildNodes %> What do you get when you do: Response.Write xd.xml? Employer made me redundant, then retracted the notice after realising that I'm about to start on a new project. The IXMLDOMDocument interface, however, was not designed to be implemented separately from one of its provided CoClasses/implementations. [Listening to: The Verve Pipe - The Freshman (Special Version)]. How can I get a huge Saturn-like ringed moon in the sky? Proxy. The two strings above are first converted to numbers, which yields NaN and any comparison involving NaN is false(). All other objects are accessed or created from the document. What is the best way to show results of a multiple-choice quiz where multiple options may be right? 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. To learn more, see our tips on writing great answers. setAttributeNode Method (for example) will use version 5.0. Same click on DOMDocument shows me a message: " Identifier under cursor isn't a procedure name ". An example of a symbolic name is CLSID_DOMDocument60. I wanted to make folks aware of a few tips and thoughts around these two components from experience and elsewhere around the net. Includes members for retrieving and creating all other XML objects. 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). Msxml2.DOMDocument Msxml2.XMLHTTP ? The following C/C++ example creates DOMDocument and queries for the other interfaces. Specify header as #include <msxml.h>. Did Dick Cheney run a death squad that killed Benazir Bhutto? If a creature would die from an equipment unattaching, does that creature die with the effects of the equipment? They are DIFFERENT and using one vs. the other (depending GREATLY on how) can make a 7x to 10x diference in performance. TechnologyAdvice does not include all companies or all types of products available in the marketplace. If I define the SourceXml as MSXML2.DOMDocument60 it retrieves a list with 0 elements inside. 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. And of course, the other question is which one will work best for my purpose as described below? Just a question more; is "translate" part of Xpath or from DomDocument? He is a failed stand-up comic, a cornrower, and a book author. Is there a way to make trades similar/identical to a university endowment manager to copy them? And of course, the other question is which one will work best for my purpose as described below? 2. Somehow, xd.hasChildNodes return False, i.e . Both synchronous and asynchronous loading are supported using, Used to save and load the XML document to and from an, You can read and write directly to the document through the, Msxml2.DOMDocument.3.0 / Msxml2.DOMDocument.6.0, Msxml2.FreeThreadedDOMDocument.3.0 / Msxml2.FreeThreadedDOMDocument.6.0, F6D90F11-9C73-11D3-B32E-00C04F990BB4/ 88d96a05-f192-11d4-a65f-0040963251e5, F6D90F12-9C73-11D3-B32E-00C04F990BB4/ 88d96a06-f192-11d4-a65f-0040963251e5, FreeThreadedDOMDocument30 / FreeThreadedDOMDocument60. ? An example of a ProgID is Msxml2.DOMDocument.6.0. It implements all of the base Document Object Model (DOM) document methods and provides additional members that support Extensible Stylesheet Language (XSL) and XML transformations. Hot Network Questions The following is an example of instantiating an instance of MSXML 6.0:<o:p></o:p> The MSXML header file and library are installed when installing the MSXML SDK. It should always be implemented with either DOMDocument or DOMDocument2. 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. See my answer for an explanation of the problem and for a suggested solution. I am looking for the most efficient object for this task. If you do need to share objects between threads, you have two choices: 1. use "FreeThreadedDOMDocument", which exposes all the same interfaces as DOMDocument, but is multi-thread safe (with a corresponding performance hit due to internal locking and synchronization). by bsmith123. If you are writing an application where multiple threads access will simultaneously access a DOM, use the free threaded model (Msxml2.FreeThreadedDOMDocument.3.0 or Msxml2.FreeThreadedDOMDocument.6.0). Why are only 2 out of the 3 boosters on Falcon Heavy reused? Reply; 13 years ago . Leading a two people project, I feel like the other person isn't pulling their weight or is actively silently quitting or obstructing it, Short story about skydiving while on a time dilation drug. MSXML::IXMLDOMDocument2Ptr loadXML; 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. For example, the DOMDocument CoClass implements the IXMLDOMDocument interface. Represents the top level of the XML source. 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). Provides control over how to bind the XML document to persistent data. Is there something like Retr0bright but already made and trustworthy? Let's look at the example below. Just do 2 steps as below.. 1. Therefore, the value of the predicate is false() and the expression doesn't select any node. Extract value of attribute node via XPath. All other objects are accessed or created from the document. The node is only part of the document tree when it is explicitly added to the tree by calling insertBefore, replaceChild, or appendChild (or for attributes, setAttributeNode). The document threading model is determined by the following settings. Asking for help, clarification, or responding to other answers. Does activating the pump in a vacuum chamber produce movement of the air inside? check out the. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. The document can be created using either a free-threaded or a rental-threaded model. Is a planet-sized magnet a good interstellar weapon? Using the default Microsoft.XMLDOM is safe in that it will work without having to . You must use the setProperty method of MSXML2.DOMDocument to set the ServerHTTPRequest property to True. When developing applications, you might typically consider an interface separately from any CoClasses that implement it. 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. by bsmith123. Interface used by dynamic late-bound scripting languages such as Microsoft Visual Basic Scripting Edition (VBScript) and Microsoft JScript. I later went to the defination of MSXML2, and change DOMDocument into IXMLDOMDocument, now the project can run, while I still don't know why - Elderry. In VBA I have the folowing expression: If I define the SourceXml as MSXML2.DOMDocument it retrieves a list with the desired nodes. MSXML2.DOMDocument not defined. 2. An example of a ProgID is Msxml2.DOMDocument.6.0. What value for LANG should I use for "sort -u correctly handle Chinese characters. The "free-threaded" DOM document exposes the same interface as the "rental" threaded document. What does puncturing in cryptography mean, Water leaving the house when water cut off, Leading a two people project, I feel like the other person isn't pulling their weight or is actively silently quitting or obstructing it. A value of True for the ServerHTTPRequest property indicates that you should use the "thread-safe" ServerXMLHTTP component to load the document. Reply; 13 years ago . If you use that symbolic name in your C++ program, it resolves to the GUID of the control. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Make a wide rectangle out of T-Pipes without loops, Non-anthropic, universal units of time for active SETI. Below we start by loading the XML document. insertBefore Method Open Visual Basic Editor in Microsoft Word by editing a Macro. How can we create psychedelic experiences for healthy people without drugs? String greater, less, and equal comparison in XmlDocument. It implements all of the base Document Object Model (DOM) document methods and provides additional members that support Extensible Stylesheet Language (XSL) and XML transformations. 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. Do US public school students have a First Amendment right to be able to perform sacred music? Header and IDL files (C/C++): msxml2.h, msxml2.idl, msxml6.h, msxml6.idl, appendChild Method How can I find an element by CSS class with XPath? Possible Duplicate: If you use that symbolic name in your C++ program, it resolves to the GUID of the control. Whath is wrong with the Xpath expression? Disclaimer: The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way. DOMDocument represents the top node in the tree. I had already installed MSXML.2, MSXML 3 and MSXML.6, what else should I do? Code: Copy to clipboard. replaceChild Method while XMLHTTP "Provides client-side protocol support for communication with HTTP servers.". capture a pages xmlhttp requests with a userscript, How to retrieve onClick/onChange data using xmlhttp, Xmlhttp request is raising an Access Denied error. The MSXML2.DOMDocument object allows you to easily traverse through an XML structure an extract any XML node and/or attribute needed. Scott Hanselman is a former professor, former Chief Architect in finance, now speaker, consultant, father, diabetic, and Microsoft employee. Should we burninate the [variations] tag? IXMLDOMDocument-DOMDocument Members 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. :). LLPSI: "Marcus Quintum ad terram cadere uidet.". Why is proving something is NP-complete useful, and where can I use it? When using Single Threaded EXEs (VB6, etc) and manipulating Xml with in a single transaction, you're working on a single thread -> Use DomDocument. CreateObject("MSXML2.ServerXMLHTTP") getPage.Open "HEAD", URL, false , username , password which checks the URL using the username and password supplied. Persistence and the DOM, More info about Internet Explorer and Microsoft Edge. Not the answer you're looking for? MSXML2.DOMDocument60 abstracts the difference between the two, . Connect and share knowledge within a single location that is structured and easy to search. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. This is a name that is defined as a macro in a header file. Thanks, John . Should we burninate the [variations] tag? Microsoft XML, v 4.0 (if you have installed MSXML 4.0 separately). Ben Smith Change your threads to use single-threaded apartments(COINIT_APARTMENTTHREADED) and then marshall interface pointers between your threads (See CoMarshalInterThreadInterfaceInStream). Only one object can be created: the document. VBA Compare 2 XML nodes to see if they are the same node, Xpath works for MSXML2.DOMDocument, but not for MSXML2.DOMDocument.6.0. Does the Fog Cloud spell work in conjunction with the Blind Fighting fighting style the way I think it does? DomDocument .3.0") objXMLDoc.async = false objXMLDoc.load (xmlfeed) Dim objChildNodes, strNode Set objChildNodes = objXMLDoc.documentElement.childNodes 'And if we then iterate through the child nodes, displaying their node names, you will see that they are the two <State> tags of our XML file. Only one object can be created: the document. .NET has much richer and highly nuanced XML support. rev2022.11.3.43003. The context is this - I have code that makes many calls to retrieve web pages. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. The context is this - I have code that makes many calls to retrieve web pages. right-click->definition on MSXML2 shows me the object in the object browser. If you install MSXML 6.0 SDK, by default your directory will be C:\Program Files\MSXML 6.0, with subdirectories named inc and lib. Set getPage = Server . Also note that loading XML into a DOM is fairly slow anywhere since you're loading XML in to a pre-parsed and indexed tree. Used by a COM container to send an OLECMDID_STOP command to stop an asynchronous download. To download MSXML SDK, go to the XML Downloads page of MSDN Online Library and choose the appropriate MSXML version. Confusion: When can I preform operation of infinity in limit (without using the explanation of Epsilon Delta Definition). Stack Overflow for Teams is moving to its own domain! For example, something like this: 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. MSXML exposes DOMDocument and FreeThreadedDOMDocument. . Connect and share knowledge within a single location that is structured and easy to search. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. DOMDocument DOMXpath store attributes like unique ids in php. Thanks for contributing an answer to Stack Overflow! Finding features that intersect QgsRectangle but are not equal to themselves using PyQGIS, Horror story: only people who smoke could see some monsters. If for some reason, you need to load a particular library version of MSXML, then you would need to instantiate the instance by pointing directly to that particular library. This is not fully implemented. DOMDocument60 for some reason can't find the node, but using DOMDocument the node is found.. makes perfect sense, thanks for the point in the right direction. The difference is that the data needs to be placed in the body of the request instead of on the URL. In addition to the DOM interfaces, DOMDocument implements a number of standard COM interfaces. Not the answer you're looking for? The interesting things are: It worked well with MSXML::DOMDocument40 coclass, but MSXML . 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