node of expression

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• Cannot see items under the node Application Express on the schema of the APEX

  I installed 3.1.2 in my database (10.2.0.4) APEX, and I want to explore the developer SQL 1.5.5 / Apex integration feature.
  
  Problem is... when I go on the pattern that has the Apex applications, I see the 'Application Express' node, but SQL Developer shows nothing under (it's just blank).
  
  I'm doing something wrong? I've looked under all the schema associated with the APEX (i.e. flows_030100), but the node Application Express is always empty.
  
  Any help much appreciated.

  Hello

  I think that you must be logged in as owner of the analysis of an application schema to see under the node Application Express.

  HTH,

  Chris

• LabVIEW. Write an equation within a formula node

  How I would write this equation chl = (4.9467 * mv)-0.3239 inside a formula node? Thank you

  You don't need even a node form. A node of expression would suffice.

• How to get started developing applications with Webworks

  Hi all!

  So I have an idea to build an HTML5 app for use by the Office on BES10. Basically it digitizes a 2 page paper form to be used on a device (PlayBook or Android) taking advantage of the function of swipping and scrolling of screen minimizing

  Here are the details:

  (1) the office worker: take Excel data and partially fills a form (or multiple shapes - similar to mail merge) to a specific area coordinator.

  (2) the office worker: push forms pre-filled as a coordinator on a PlayBook application or another html5 client connected to BES10 (private App)

  (3) Coordinator: logs in-App to 'their space '.

  (4) Coordinator: filling out form and supports (or partially fill in form to submit later).

  (5) time stamp is applied to participate "forms" submitted.

  (6) field coordinator: can view their history of completed forms (read-only)

  (7) the office worker: can view, print, save, or extract data from forms.

  How I started with this project? I have to go back and take a class HTML5 then a webworks courses?

  Thanks for your comments.

  Hello

  When you think Webworks is a framework that relies on HTML5, CSS and JavaScript for its applications.

  So if you are looking to develop an application, with a background in HTML5, JavaScript and CSS is certainly recommended and would be the best starting point that I can recommend.

  In your case, it seems that it would also be a bit of work on the backbone (to store data on a server) for which I highly recommend looking in Node.js + Express.js (for the web server) and MySQL for any back-end storage.

  WebWorks which gives you on top of that is a subset of the JavaScript APIs specific BlackBerry that allows you to take advantage of the native features (Toast messages, Push Services, etc.)
  https://developer.BlackBerry.com/HTML5/APIs/v2_1/

  However the structure underlying and functionality is always HTML5, JavaScript and CSS.

  Once your application is HTML5 writes, and you have chosen to use / not use WebWorks APIs, you can then use WebWorks to 'package' for your project of HTML5 in a file that runs on BlackBerry 10 devices.

  The app itself is so standard web technology, with the ability to use native APIs via WebWorks. And WebWorks place it in a container that can be run on a physical device.

  For PlayBook, it's the best starting point:
  https://developer.BlackBerry.com/PlayBook/HTML5/

• Join the Session after 3rd party authentication OAuth

  I use 5 APEX and integrate my application with another 3rd party solution. This 3rd party solution uses OAuth2 for authentication, which has a static redirect_url (a successful authentication post) which cannot be defined in the URL to call. Rather, it is defined as part of their application.

  I know it's confusing, so here is the whole process that happens:

  • Web server is Node.js (Express with Passport for OAuth authentication) makes queries APEX proxies to ADR 3 / Tomcat.
  • The user connects to the application of the APEX and gets a new session ID.
    • ex: f? p = 100:1:20953642103077
  • Once logged in, there are a few JS on Page 1 (P1) that detects whether the user has been authenticated with this 3rd party service (call the 3PS for that matter). It does this by looking at a custom cookie that is set by the web server for Node.js (let's call this 3ps_token).
    • If 3ps_token is null, then it will trigger the process of 3PS OAuth and use is redirected to their site to connect and to grant the appropriate privileges.
    • Once 3PS has granted the privileges, the user will be redirected to a predefined URL which is stored as an attribute in the 3PS area. I can't pass in the URL as a parameter to URL redirection and don't have, so no real way to back the session APEX I was coming.
    • The redirect URL is currently going back to the Node.js, which sets the 3ps_token in a cookie, and then tries to redirect to the APEX and 'join' the existing session. This is where I'm having issues as the URL that I provided is/ords/f? p = 100 (as I don't know the original session).

  How can I join my existing session of APEX (in the example above, 20953642103077)? If the following solution here: login page of APEX 4.1 kills the existing session cookie but this would require a custom authentication which I was hoping to avoid. Christian Neumueller-Oracle made a comment at the bottom of its solution join session is not secure. Is their a best practice because this so?

  Hi Martin,

  I have good news for you, we implemented session to return to the APEX 5. It will allow you to have an APEX URLs without a session id. You must first enable this feature in the Administration of the proceedings (see https://docs.oracle.com/cd/E59726_01/doc.50/e39151/adm_wrkspc002.htm#BABJCGAG) and then at the page or application level. Please consider the implications of security in this article, because to return potentially open your application to XSS attacks from other applications on the same server.

  Kind regards

  Christian

• Removal of application execution environment

  Anyone know how to remove a request of the APEX runtime environment?
  It doesn't seem to be a function in APEX_INSTANCE_ADMIN.
  
  I assumed that the removal of the entry in the table WWV_FLOWS propbably would prevent from running, but of course that would leave most of the application in place.

  Keith,

  I have never tried this with an installation before reading, but have you tried to use SQL Developer to do this? The node Application Express allows you to right click and remove applications...

  Kind regards
  Dan

  Blog: http://DanielMcGhan.us/
  Work: http://SkillBuilders.com/

• Add pre-configured function palette of expression node?

  Is there a way to add a node of preconfigured expression custom palette funtion?

  LabVIEW offers a couple of them (like the radians into degrees and degrees in radians) in the NI_AngleConversion.lvlib.  I can view the palette of rapid decline, type rad to deg and click in my block diagram to get to this:

  

  I watched the screws in this library and tried to set up a library for me in the same way, but have not had much luck.

  I CAN add to the library, but I have to wire the terminals get a square standard VI icon in my diagram when I try to use it.

  However, I really like the compactness of the Expression node on my block diagram and do not want the VI icon to be used.  I want just a node expression preconfigured to appear that looks like this:

  

  Anyone know if this is possible?

  Thank you

  -Randy

  You can place materials VI of the items on the pallet.

  Read this.  http://digital.NI.com/public.nsf/allkb/61A6A949B060A20186256AD900793E52

  In addition, you can do a Subvi.  It doesn't have to be a square icon.  You can make your smaller icon and using a smaller box on your icon.  Do not fill the external pixels of the icon.

  For something like a basic trigonometric calculations, I think you're better off using primitive LabVIEW and a Subvi.  Just as the icon of the size.

• Expression node Bug?

  Hello

  anyone (using the decimal point decimal) could you please try this expression in the node of the expression:

  100 * (1 + x * 0, 003908 + Pow (x, 2) * (-5, 7746 * Pow (10, -7)))

  The error message is: lack of parenthesis (error is marked by a character ' # ': 100 * (1 + x * 0 003908 #+ pow(x,2) *(-5,7746*pow")" "))

  I use the decimal point comma (this is Germany).

  Funny facts:

  -to any other number instead of work 0,003908

  -replace the separator of decimal with a dot (.) makes it work, too--even if the second factor (5,7746) ends with a semicolon

  I'm using LabVIEW 2011, BTW.

  Not a big deal. In any case, I am writing my applications in c# after too many real issues of LV. I wanted just a small sign test and thought I give another chance to LabVIEW.

  Read the help:

  Note  Formula node accepts only the period (.) as the decimal separator. The node does not recognize decimal separators located.

• XQuery insert node and assign the value based on an XPATH expression

  Hello

  I am trying to write a function that receives an XML as input parameters and return updated XML output

  -nodes are removed from the input XML code

  -a node must be inserted and the node value must be 1 or 0, based on an XPATH expression

  I discovered how to remove nodes, I discovered how to insert a new node, but I can not set the value of the conditionally inserted node an XPATH expression.

  Here's my current procedure and below a sample of one XML of entry. I use Oracle 12 c.

  CREATE OR REPLACE FUNCTION STRIP_XML
  (
    IN_XML IN SYS.XMLTYPE
  ) RETURN SYS.XMLTYPE AS
  p_result XMLType;
  BEGIN
    select
        xmlquery(
           'declare default element namespace "http://mad.evs.com/search"; (: :)
            copy $d := .
            modify (
    delete node $d//MainCategory/@logId,
             delete node $d/MainCategory/@id,
  -- a lot more of those delete node
   -- insert a node, but the value 1 is conditional
             insert node <DMZ>1</DMZ> after $d/MainCategory/SDataSection/EventDate)
            return $d'
          passing in_xml
          returning content
          ) into p_result
          from dual;
  
  
    RETURN p_result;
  END STRIP_XML;
  

  The condition for the value of is

  
  

  HASPATH (//DigitalAssets/DigitalAsset [@ available = "true" and @videoFormatId = "11"] / VideoLocations/Videorental [@typeId = "8"]) then 1 else 0

  
  

  It is complex because DigitalAssets/DigitalAsset is a collection. Here is an example of an XML to entry

  
  

  
  

  <MainCategory xmlns="http://mad.evs.com/search" id="9" logId="3349" logType="3">
    <Name>Sport</Name>
    <Serie id="163" externalId="557">
    <TitleAKA>UCL 2006/07</TitleAKA>
    <DigitalAssets available="true" som="20:28:49:05" dur="00:02:46:04" videoDurationMinutes="3">
       <DigitalAsset available="true" som="20:28:49:05" dur="00:02:46:04" videoDurationMinutes="3" videoFormatId="3">
          <VideoLocations>
              <VideoLocation id="3" path="003349MA.mxf" typeId="1" locationId="1" priority="0"/>
              <VideoLocation id="3" path="003349MA.mxf" typeId="2" locationId="1" priority="0"/>
              <VideoLocation id="3" path="003349MA.mxf" typeId="5" locationId="1" priority="0"/>
           </VideoLocations>
        </DigitalAsset>
        <DigitalAsset available="true" som="20:28:49:05" dur="00:02:46:04" videoDurationMinutes="3" videoFormatId="11">
           <VideoLocations>
              <VideoLocation id="101" path="003349MA.mpg" typeId="1" locationId="1" priority="0"/>
              <VideoLocation id="101" path="003349MA.mpg" typeId="2" locationId="1" priority="0"/>
              <VideoLocation id="101" path="003349MA.mpg" typeId="8" locationId="1" priority="0"/>
           </VideoLocations>
        </DigitalAsset>
    </DigitalAssets>
    <SDataSection xmlns="http://mad.evs.com/search">
      <EventDate>2006-08-09</EventDate>
      <LogType>3</LogType>
    </SDataSection>
  </MainCategory>
  

  
  

  In this case, because HASPATH expression could be set to true, the value of the added node must be 1.

  
  

  Any help or advice how I should fight against that would be appreciated. I have no experience with XML and XQuery, I create my function through from trial and error of the doc.
  

  
  

  Thanks and regards, Pierre
  

  Hi Pierre,.

  You can use the if-then-else statement, like this:

  Insert the node

  {

  If ($d/MainCategory/DigitalAssets/DigitalAsset[@available="true' and @videoFormatId = '11'] / VideoLocations/Videorental [@typeId = '8'])

  then 1

  0 otherwise

  }

  After $d, MainCategory, SDataSection, EventDate

  XSLT can be an alternative to the XQuery Update in this case.

• Change the color of the nodes in the tree based on a regular expression

  Dear Experts,
  
  Given:
  Sample:
  http://Apex.Oracle.com/pls/Apex/f?p=53647:5
  Test/test
  
  Information from the workspace
  Workspace: ralab
  user: test
  password: test
  application: trees-samples
  page: 5
  
  Mandatory
  I can change the color of node using jQuery contains() selector based on a value, for example the project

  apex.jQuery("#eba_demo_tree").find("a:contains('Project')").css("color","red");

  Now, the question:
  How can I update the jQuery code to change the node based on a regular expression as

  ^[P]

  or in other words for all the nodes starts with P, the color needs to be changed in red?
  
  Best regards
  Mahmoud

  $("#eba_demo_tree a").filter(function(index){
     var lRegExp = /^m/i; //or new RegExp('^m', 'i');
     //trim to get rid of leading space due to space in encapsulated ins-element
     return lRegExp.test($(this).text().trim());
  });
  

  http://API.jQuery.com/filter/
  http://www.w3schools.com/jsref/jsref_obj_regexp.asp
  http://www.regular-expressions.info/JavaScript.html

• Why ADF links node is not displayed in the generator Expression window?

  Hello
  
  I use Oracle JDeveloper Studio Edition Version 11.1.1.1.0and I created a Web Application from merger and I configured ADF authentication and security for my web project, using the provided Wizard.
  
  On a specific page, I placed a component link to go, and I'm trying to edit the text and the Destination property using Expressions of EL. When I open the expression builder window all I can see are the following nodes: ADF controller objects, ADF Managed Beans, JSF managed Beans and JSP objects, but no links ADF. I need to access the properties of securityContext , and what I read in B31974-03, I need links to the ADF.
  
  Also, I have tryied using the search field from the windows of generator expressions, without a bit of luck.
  
  It's probably a problem of beginner, but I really can't understand it. Help, please.
  
  Bogdan.

  Hello

  Maybe your problem is that you have not created pageDef in connection with your page. Try to right click on your page and go to the Page definition. It will create the related pageDef, if it does not exist.

  Hope this helps

  Joseba

• Why Express PSD gives a different result of amplitude as FFT PSD?

  Hello

  When I use the express VI of spectral measures to trace the power spectral density, I get a different result than when using the FFT PSD VI. The data are the same but the amplitudes are different in the PSD plot. Everyone comes through this?

  Thank you

  Donners,

  The PSD2 and graphic PSD2 are different because you are breastfeeding two extra points in the tables (t0, df). When graphic entry of data in the tables, they interpret not automatically information of t0 and df.  Actually they do not yet receive this information.  You must program the scales with nodes of property.  If you simply draw the order of magnitude, the spectra are very similar.

  

  ^ ^ ^ This confuses only the chart!

  The spectral forms differ slightly as the power spectrum of FFT and PSD.vi uses a default Hanning window.

  Lynn

• Compilation of FPGA - real formal error on the cost of the port cannot be an expression

  Details:
  ERROR: HDLCompiler:192 - "C:\NIFPGA\jobs\BPO5kq2_O6tyN2U\OC4_Sine_Cosine_LUT_Constant_Amplitude_dash_optimised_vi_c.vhd" line 1408: real formal on the cost of the port cannot be an expression
  ERROR: HDLCompiler:854 - "C:\NIFPGA\jobs\BPO5kq2_O6tyN2U\OC4_Sine_Cosine_LUT_Constant_Amplitude_dash_optimised_vi_c.vhd" line 69: Unit ignored due to previous errors.
  File VHDL C:\NIFPGA\jobs\BPO5kq2_O6tyN2U\OC4_Sine_Cosine_LUT_Constant_Amplitude_dash_optimised_vi_c.vhd ignored errors
  -->

  The compilation happens to step "using the unit felt" but then stops soon after with a compilation error.

  The line in question (1408) refers to the output of a "Reinterpretation FXP" node with the text

  Cost => (others-online '0'),

  in the part of port of the code card.  This is the output of the FXP reinterpret node is directly connected to an indicator in a VI sub whose output is then entered directly at a crossing high multiply node.  The code is part of a cosine sine LUT I programmed.  She used to compile without a problem, but I think I know where is the problem.  In one case, I have used only the sine of output of the algorithm and theory, Xilinx can optimize away from the part of cosine.  I have two instances of this VI in my code and looking at those generating any errors, the output is associated with a cosine indicator.

  Cost-online s_Cosine_2434,

  It seems that the track is essentially optimized away, but the compiler, Xilinx has a problem with the flag being present on the sub - VI but the idnicator is not used anywhere.  As a result, the cost gets set to an invalid value.  I guess close to reinterpret it FXP at the exit of the Subvi is an important aspect of this problem.

  I think I know enough now to fix this (remove the path manually by duplicating the sub - vi), but it may be useful for future bug fixes feedback in the FPGA module.  It is not the first time that this kind of removal of incorrect code me has given problems, but this is the first time I could clearly identify the problem.

  Shane

  Hey Shane,

  Looks like someone filed a bug report on it a month or two ago. It's the CAR # 475397 if you want to check for it in the list bug fixed for 2014 SP1.

• Change the precision of the express vi table

  Hello friends.

  I have a problem.

  I use an Express VI to create a Table.

  If you see an example below, he has a table with precision set to 2.

  Now if I want to change the precision, I must right click, go to properties and make the change in accuracy.

  Is there a way to change the accuracy by programming. I couldnot see any node property for precision adjustment.

  Can someone help me?

  PS: I'm not very familiar with Labview, so I would stick to screw Express. I know that they are not preferred by the senior programmers, but they are somehow very easy and convenient to use for newbies like me.

  Rgds,

  Rohit Chawla.

  Not possible in Express VI itself, but you can add your own code between the Express VI and the resulting table. See that attached to modified VI to get the idea.

  See you soon,.

  Cerati

• Screw vs Express SoftMotion function blocks

  Hello

  Are there differences between express screw SoftMotion function blocks? I intend to drive a servomotor through a NI 9505. Examples AND show how using function blocks, but I've been advised to use the screw Express instead, work around odd behavior when using a simulated axis (http://forums.ni.com/t5/LabVIEW/SoftMotion-quot-Update-Buffer-quot-VI-refuses-to-take-more/m-p/22508...

  Thank you!

  Hi JKSH,

  If I booted up a new application, I would use screw Express on function blocks. Here is a list of things to consider when choosing:

  1. By default, function blocks are asynchronous. They run on the rising edge of the entry "run" and are carried out when the output "done" is high. They do not block and function block architecture will almost always call the same function blocks again and again in a loop. You control the flow of execution with the 'run' and 'done' entry and exit. Screw Express, on the other hand, are synchronous by default. They don't have an entry not "run" and instead start running as soon as they are called. They block also until the end screw Express can be converted to asynchronous by right-clicking on them and by changing the "calendar model. When you change the calendar in asynchronous model, the Express VI will now act exactly like a function block.
  
  
  2. In general, you should never mix asynchronous and synchronous API. Your application should be one or the other. If it is possible to have safe synchronous and asynchronous calls, you must be very careful and really know what you're doing.
  
  
  3. To my experience, write simple applications is easier with a synchronous API, and more complex applications are better suited to an asynchronous API. Since blocking synchronous calls, you need more loops in your application and it can become difficult to maintain.
  
  
  4. There is also the property node / API call, on which are based the functional blocks and screw Express. You can do a right click on a function block or Express VI and convert it into a Subvi to see the underlying code. Then the function blocks and screw Express can be pleasant to work with, you must sometimes lower level control that is offered by the property and invoke nodes.

  I looked at your other post and it seems that you meet one of the intricacies of asynchronous calls. In point 1 above, I mentioned that function blocks increase sensitive edge on the execute line. In your modified sample and the original sample, the 'Update buffer' function block is executed when space becomes higher or equal to the "size of the Contour data. In the original example, the size of the table is 40, but in your example, it is 100. We will follow the stream through the example:

  1. We do nothing in the first round since we do not see a rising edge of the signal "run" "Initialize the buffer" until the second iteration.
  
  
  2. At the beginning of the second iteration, we initialize the table with 20 points, leaving 20 spaces available. This function block can take more than one iteration to complete, so that the loop can run several cycles before the release of "Done" is set to true. In this case, the next block runs.
  
  
  3. Then we start the move of contour. No point is taken in the buffer zone This occurs in the part of the user rather than the scan code.
  
  
  4. Then, we see that there are 20 spaces available, so we add more than 20 points to the buffer, leaving us with 0 beds available. This means that in the next iteration of the loop, the signal "run" function block 'Update buffer' will be false. This is essential to the functioning of the example.
  
  
  5. Since there is no abandonment called, we have a loop around back.
  
  
• Each scan, SoftMotion takes a point in the buffer zone. Finally, the number of available points will be 20. When this happens, the entry "run" will switch from false to true on the 'Update buffer' function block and 20 points more will be added to the buffer. This cycle continues until you stop.

So, what was wrong with your changes? You did the size of the table 100 points. If you look at the steps above, you will see that in the example, we have 40 points in the buffer before taking points. If you increase the size of the table to 100, it means that there are 60 places available. However, 60 is always higher than the "size of data contours" (which is 20) and so the entry "run" function block 'Update buffer' will never wrong; We have always more available space than the "size of data contours. Since "run" is sensitive edge up, we are never really new data in the buffer, and so you get only two cycles that you initially put in. I agree that it is difficult, but it's exactly as function blocks are supposed to work and are certainly something to think about when you use the asynchronous API.

Thank you