Calling a member function

Similar Questions

• Call a member function from a cursor in a procedure

  Hello people
  
  I'm a newbie in the process of learning of 10 G and oracle. My question is:
  
  I created a type called row_po and set a member function getCost() that returns the total cost of the order with headings like the nested table, which I intend to call from a procedure. In the procedure my SELECT returns more than one record, and that's why I need to use a cursor. For each record, I've got display the order_no, quantity, and the order_cost (qty, and order_cost are part of a nested table headings). I am able to access the order_no and quantity, but do not know how to call the member function to get the order_cost. Here are my steps:
  
  CREATE OR REPLACE PROCEDURE get_podet (part_num number)
  AS
  CURSOR c2 is
  SELECT *.
  OF po, TABLE (in. LineItemList_nestab) tab_po L
  WHERE L.PartNo = part_num;
  BEGIN
  TO crec looped c2
  DBMS_OUTPUT. Put_line (' ORDER NUMBER: ' | crec.) PONo);
  DBMS_OUTPUT. Put_line (' LINE QTY: ' | crec.) Qty);
  {color: #ff0000} * DBMS_OUTPUT. PUT_LINE (' ORDER VALUE: ' |) ''); -order_cost, which must be returned by the member function I mentioned-*.
  {color} END LOOP;
  EXCEPTION
  WHILE OTHERS THEN
  DBMS_OUTPUT. Put_line ('Failed' |) "SQLCODE: ' |" SQLCODE);
  DBMS_OUTPUT. PUT_LINE ('SQL ERROR MESSAGE' |) SQLERRM);
  END;
  /
  
  The red line is where I want to call my function getCost() which is a member of the tab_po in. as stated in my SELECTION.
  
  All thoughts were highly appreciated.
  
  Thanks and greetings

  It's always tricky with objects (or so I think...)

  Modify the query in your procedure:

  SELECT treat (value (po) as row_po).getCost() tot_cost
       , po.*
       , l.*
  FROM tab_po po, TABLE (po.LineItemList_nestab) L
  

  This would make the function:

  CREATE OR REPLACE PROCEDURE get_podet(part_num in number)
  AS
  CURSOR c2 is
  SELECT treat (value (po) as row_po).getCost() tot_cost
       , po.*
       , l.*
  FROM tab_po po, TABLE (po.LineItemList_nestab) L
  WHERE L.PartNo = part_num;
  BEGIN
  FOR crec in c2 LOOP
  DBMS_OUTPUT.PUT_LINE('ORDER NUMBER: ' || crec.PONo);
  DBMS_OUTPUT.PUT_LINE('LINE QTY: ' || crec.Qty);
  DBMS_OUTPUT.PUT_LINE('ORDER VALUE: ' ||crec.tot_cost
  ); -- order_cost which should be returned from the member function i've mentioned --
  END LOOP;
  EXCEPTION
  WHEN OTHERS THEN
  DBMS_OUTPUT.PUT_LINE('Failed' || 'SQLCODE: ' || SQLCODE);
  DBMS_OUTPUT.PUT_LINE('SQL ERROR MESSAGE ' || SQLERRM);
  END;
  

  Published by: Alex Nuijten on January 13, 2009 15:29

• pl/sql appellant java class member function obtains ora-00932 in 11g.

  Call a member function of class of java from a pl/sql script, I get an error ora-00932.

  ORA-00932: inconsistent data types: waiting for an IN argument in position 1 which is an instance of an O

  convertible to an instance of a user defined class Java got a type of Oracle that could not be converted

  The code works fine when the java function is declared static.   However, since there could be thousands of users hitting the function at the same time and there is no instance of the object, I wasn't sure if it would be a matter of how oracle manages memory for each user in a session, if it would not be a problem, I can go forward with this approach.   However, I have greatly simplified this for an example that reproduces the problem.

  Create the oracle type:

  CREATE OR REPLACE TYPE MyObject AS OBJECT

  (

  col1Data VARCHAR2 (10),

  MEMBER FUNCTION createData

  RETURN VARCHAR2 AS LANGUAGE JAVA

  NAME "java.lang.String return MyObject.createData ().

  );

  Java code:

  CREATE OR REPLACE AND FIX JAVA SOURCE NAMED 'MyObject' AS

  import java. IO;

  public class MyObject

  {

  private String col1Data;

  public void createData)

  {

  System.out.println ("col1:" + col1Data);

  }

  }

  Java function call vai pl/sql function:

  FUNCTION to CREATE or REPLACE fn_myobject

  (col1 IN varchar2)

  RETURN VARCHAR2

  AS

  p_rc varchar2 (100);

  myObj MyObject;

  BEGIN

  myObj: = new MyObject (col1);

  p_rc: = myObj.createData ();   -This line gets an error 00932

  RETURN p_rc;

  END;

  /

  And finally, the script from sqlplus to test:

  Set serverout

  call dbms_java.set_output (50);

  Set line 120

  declare

  VARCHAR2 (64) RC: = ";

  R1 varchar2 (64): = 'abc ';

  Start

  RC: = fn_myobject (r1);

  end;

  /

  I tried all sorts of things without success.   Any ideas on this would be most appreciated.  It is once again, 11g.

  Thank you.

  MarkF says:

  If you go back to the example code I posted, it is mapping a java class oracle object.

  No, it isn't.

  Your example simply sets an Oracle object type whose member createData function is implemented in Java.

  The fact that the implementing class has the same name does not have a direct mapping between the class and the type of Oracle.

  The important part to read and understand in the link I posted is:

  A call specification outlines the top level of an Oracle database Java method entry point. So, you can publish only public static methods.

  However, there is an exception. You can publish instance methods as members of an SQL object type methods.

  You are in the first case.

  To be in the exceptional cases and be able to publish instance methods, the Java class must implement SQLData.

  See the latest example here:

  https://docs.Oracle.com/database/121/JJDEV/chsix.htm#JJDEV13273

  Adapted to your example:

  CREATE OR REPLACE AND compile JAVA SOURCE NAMED "MyObject" AS
  import java.sql.*;
  
  public class MyClass implements SQLData
  {
    // Implement the attributes and operations for this type.
    private String col1Data;
  
    public String createData ()
    {
        System.out.println ("col1: " + col1Data);
        return col1Data;
    }
  
    // Implement SQLData interface.
    String sql_type;
  
    public String getSQLTypeName() throws SQLException
    {
      return sql_type;
    }
  
    public void readSQL(SQLInput stream, String typeName) throws SQLException
    {
      sql_type = typeName;
      col1Data = stream.readString();
    }
  
    public void writeSQL(SQLOutput stream) throws SQLException
    {
      stream.writeString(col1Data);
    }
  }
  /
  

  CREATE OR REPLACE TYPE MyObject AS OBJECT
  (
    col1Data  VARCHAR2(10),
    MEMBER FUNCTION createData
            RETURN VARCHAR2 AS LANGUAGE JAVA
      NAME 'MyClass.createData() return java.lang.String'
  );
  /
  

  Test:

  SQL> exec dbms_java.set_output(1000)
  
  PL/SQL procedure successfully completed.
  
  SQL> set serverout on
  SQL>
  SQL> select MyObject('ABC').createData() from dual;
  
  MYOBJECT('ABC').CREATEDATA()
  --------------------------------------------------------------------------------
  ABC
  
  col1: ABC
  

• Fatal error: call to a member function find() a non-object in www/index.php on line 27 /app/

  Fatal error: Call to a member function find() on a non-object in www/index.php on line 27 /app/,.

  I get this message when I try to open a Web page, is there an easy solution?

  Hello

  1 - is the question confined with any particular Web site?

  2. what web browser do you use?

  3. don't you make changes to the computer until the problem occurred?

  I suggest you to try the steps below and check if it helps.

  Method 1: Try the steps from the link below.

  Can't access some Web sites in Internet Explorer: http://support.Microsoft.com/kb/967897

  Important: Reset Internet Explorer to its default configuration. This step will disable also any add-ons, plug-ins or toolbars that are installed. Although this solution is fast, it also means that, if you want to use one of these modules in the future, they must be reinstalled.

  Method 2: How to troubleshoot script errors

  in Internet Explorer on Windows computers: http://support.microsoft.com/kb/308260

  Hope this information is useful.

• By the way Self as a parameter or by passing an object Variable to a member function, both in the approach IN OUT NOCOPY Mode which is better?

  Hi all
  Asking for help which approach is better of the two in terms of performance and why (if there is no difference) or are they an and they same and only different in terms of syntax only.

  (A) to call a function with itself in passing as IN OUT nocopy
  (B) passing the calling object, same as IN OUT NOCOPY.

  @
  (In my approach, I need to pass an object with almost 30 attributes and I must assign values to few attributes of the object in a few member functions that will impact object)

  I have an object created in the
  CREATE or REPLACE TYPE my_obj AS OBJECT
  (
  NAME VARCHAR2 (100),
  FUNCTION CONSTRUCTOR My_obj RETURNS SELF AS RESULTS,
  FUNCTION MEMBER put_name (SELF IN OUT NOCOPY my_obj) RETURN PLS_INTEGER,
  RETURN of the MEMBER FUNCTION insert_name (v_my_obj IN OUT NOCOPY my_obj)
  PLS_INTEGER,
  MEMBER get_name PROCEDURE
  );
  /
  CREATE OR REPLACE TYPE BODY MY_OBJ

  FUNCTION CONSTRUCTOR RETURN self AS RESULT My_obj IS
  BEGIN
  NULL;
  RETURN;
  END;

  FUNCTION MEMBER (SELF IN OUT NOCOPY my_obj) put_name IS BACK PLS_INTEGER
  BEGIN
  Self.Name: = "my_name_in_self";
  RETURN 1;
  END put_name;

  MEMBER FUNCTION insert_name (v_my_obj IN OUT NOCOPY my_obj)
  IS BACK PLS_INTEGER
  BEGIN
  v_my_obj. Name: = "my_name_in_Alias";
  RETURN 1;
  END insert_name;

  MEMBER get_name PROCEDURE IS
  BEGIN
  dbms_output.put_line (self. (Name)
  END;
  END;
  /

  (a) put_name heel 1 call:

  declare
  v my_obj: = my_obj();
  number of ret_val;
  Start
  ret_val: = v.put_name;
  v.get_Name;
  end;

  o/p: my_name_in_self

  (a) insert_name citing heel 2:

  declare
  v my_obj: = my_obj();
  number of ret_val;
  Start
  ret_val: = v.insert_name (v);
  v.get_Name;
  end;

  o/p: my_name_in_Alias

  What is better to use the put_name or use the function insert_name.
  I manipulate the object when it is passed to a function.

  Thanks in advance,
  Kind regards
  Gaurav R

  As Billy said above, each member method has implicitly (which can be made explicit, as with "put_name", when required, for example, to specify the "nocopy" option) parameter named 'home '. For member functions, the passage of default mode is "inside". For the procedures of members, the passage of default mode is "outside". Therefore, the actual signature of the function of your 'insert_name":

  ...
  member function insert_name(self in my_obj, v_my_obj in out nocopy my_obj) return pls_integer
  ...
  

  Since you don't self directly access this function, it is logically equivalent to a static type function (which has no implicit setting of "self"):

  ...
  static function insert_name(v_my_obj in out nocopy my_obj) return pls_integer
  ...
  

  which is basically no different than using a non-object function that takes a parameter of type of object:

  create function insert_name(v_my_obj in out nocopy my_obj) return pls_integer
  

  Gerard

• receive the following error code when searching for a piece of music I did several times without a music problem but have recently updated Firefax: Fatal error: Call to undefined function AmazonData() in/home/boss/public_html/mc on line 13

  I am in the page web http://www.songarea.com/ and after searching a piece of music, I get the following error message:
  "Fatal error: Call to undefined function AmazonData() in/home/boss/public_html/mc on line 13.
  I did this several times before without a problem, but have recently updated Firefox with the Skype add-on and wonder if the two things are related.

  URL of affected sites

  http://www.songarea.com/

  Hi John,.

  It is an error message from the web server providing this site. Specifically, it is something wrong with their PHP code.

  It is not browser specific and would go into another browser besides Firefox.

  You will need to contact the webmaster of this site to report this problem. A quick test does not show this problem, but you do not specify what search query, you tried:

  http://www.songarea.com/music-codes/test.html

• Two parallel executions, calling a DLL function

  Hello

  Since this test takes about 6 hours to test my USE, I plan to use the parallel model to test 2 UUT at the same time in parallel.

  I implement the test code as a DLL of CVI.

  However, to my surprise, it seems that the steps that call a DLL function actually traveled in one series, not in parallel:

  Test 2 power outlets if one enters and executes a DLL works, the other waits for the first to complete its operation and return. While the other runs on the same copy of the DLL, so that the DLL global variables are actually shared between executions.

  So if a DLL will take 5 minutes to complete, two executions in the running at the same time take 10 minutes. This isn't a running in parallel in every way.

  What I want and expect also TestStand, was to completely isolate the copies of these two executions DLL such as test two casings could run at the same time the same DLL function by arbitrary executiong their copy of the function, completely isolated from one another.

  So they separated globals, discussions, etc., and two parallel jacks take 5 minutes to run a step, instead of 10.

  Such a scenario is possible?

  If not, how can I use my test in parallel (in truly parallel) when the use of 2-socket test?

  (1) Yes, he'll call the multiple executions in TestStand calling into the same dll in memory the same copy of this DLL. Thus dll called in this way must be thread-safe (that is written in a way that is safe for multiple threads running the code at the same time). This means usually avoiding the use of global variables among other things. Instead, you can store the thread shows in local variables within your sequence and pass it in the dll as a parameter as needed. Keep in mind all the DLLs your dll calls must also be thread-safe or you need to synchronize calls in other DLLs with locks or other synchronization primitives.

  1 (b) even if your dll are not thread-safe, you might still be able to get some benefits from parallel execution using the type of automatic planning step and split your sequence in independent sections, which can be performed in an order any. What it will do is allow you to run Test a socket A and B Test to another socket in parallel, and then once they are then perhaps test B will take place on one and test one run on the other. In this way, as long as each test is independent of the other you can safely run them in parallel at the same time even if it is not possible to run the same test in parallel at the same time (that is, if you can not run test on two Sockets at the same time, you might still be able to get an advantage of parallelism by running the Test B in one take during the tests in the other. See the online help for the type of step in autoscheduling for more details).

  (2) taken executions (and all executions of TestStand really) are threads separated within the same process. Since they are in the same process, the global variables in the dll are essentially shared between them. TestStand Station globals are also shared between them. TestStand Globals file, however, are not shared between runs (each run gets its own copy) unless you enable the setting in the movie file properties dialog box.

  (3) course, using index as a way to distinguish data access are perfectly valid. Just be careful that what each thread does not affect data that other threads have access. For example, if you have a global network with 2 elements, one for each grip test, you can use safely the decision-making of index in the table and in this way are not sharing data between threads even if you use a global variable, but the table should be made from the outset before start running threads , or it must be synchronized in some way, otherwise it is possible to have a thread tries to access the data, while the other thread is created. Basically, you need to make sure that if you use global data which the creation/deletion, modification and access in a thread does not affect the global data that the other thread use anyway in or we must protect these creation/deletion, modification and access to global data with locks, mutex or critical sections.

  Hope this helps,

  -Doug

• Error when you try to call the Javascript function in the ActiveX Web browser

  I have a requirement to call a Javascript function in a web page that is displayed in the browser's ActiveX control.  I have the control on the front panel, and I use the Navigate method to call to the top of the appropriate page.  Based on an example, I found, I'm trying to get a reference to the HTML Document so that I can then get a reference to the Fenetreparent.  There is a method of the HTML Window object called execScript who I'm calling.  See the attached image of the code (reference close calls do not appear, but when I run it, they are there).

  I can't the node property that returns the parentWindow reference.  The error I get is the following.

  Error-2147467262 LabVIEW: (Hex 0 x 80004002) No. taken such interface supported.

  Any ideas on where to go from here?

  

  Hello

  I have reproduced the issue and the error you are seen and tried to understand what is the solution.

  It seems that the problem is with getting the pointer to the parentWindow.  From what I read on MSDN, it's maybe a limitation in the use of an ActiveX control in LabVIEW. It seems like Internet Explorer creates the object of the window, and so opening in one ActiveX control you free access to this top-level object.

  Here could be workaround for javascript execution in your program:

  

  I would like to know if it works for you and if it will work in your program.

• How to use the node to call a library function to convert C++ source codes

  Hi all

  There are two dll name 'QMSL_WLAN_Transport.dll' and 'QCAMSL_MSVC10R.dll' and some codes c ++ to connect to the DUT. The two DLLs work together for communicaite with the DUT.

  I am confused as how to use the node to call a library function to load the 'QCAMSL_MSVC10R.dll' function as

  g_hResourceContext = QLIB_ConnectServer_UserDefinedTransport((HANDLE) USER_HANDLE,
  UserDefinedSend,
  UserDefinedReceive,
  UserDefinedFlushTxRx,
  true,
  true);
  

  It seems that 'UserDefinedReceive, UserDefinedSend, UserDefinedFlushTxRx' Processaddress?  And "UserDefinedReceive, UserDefinedSend, UserDefinedFlushTxRx"'s functions in 'QMSL_WLAN_Transport.dll '.

  UserDefinedReceive = (_UserDefinedReceive)GetProcAddress(hUDT,"UserDefinedReceive");
  UserDefinedSend = (_UserDefinedSend)GetProcAddress(hUDT,"UserDefinedSend");
  UserDefinedFlushTxRx = (_UserDefinedFlushTxRx)GetProcAddress(hUDT,"UserDefinedFlushTxRx");
  

  Attached DLLs and C++ code snippets.

  Need help.

  Thank you.

  These parameters are reminders - pointers to functions that are called by the DLL - and there is no way to duplicate this purely in LabVIEW. Search this forum for the word "recall" and you will find similar questions (for other DLLs). You will need to write your own DLL (in C, C++, etc.) that implements these functions and provides a way to transfer data to LabVIEW.

• How to call a DLL function that has need of an array initialized structures which can be written in by the DLL?

  I need to call the following function in a C DLL:

  __declspec (dllexport) int MSIL_EnumSpectrometers (SPECTROMETER_ID * spectrometers);

  where the only parameter is a pointer to:

  typedef struct
  {
  tank model [32];
  series char [32];
  Channel int;
  } SPECTROMETER_ID;

  Before LabVIEW 2011 I would use a CIN allocate the memory and call the function, but in LabVIEW 2011, the INC has been deleted and I have to use a library function node call instead. When I go to set the parameter, it seems that I need to set the type to "Adapt to the Type" and data for 'Pointer to data in table' Format, then pass an initialized array of SPECTROMETER_ID with the many elements he so the DLL can fill the table with data. (See the attached picture.) When I do that, however, it blocks LabVIEW desktop.  I guess it is because the DLL is corrupting the memory space of LabVIEW, but I don't see why, because I'm basically passing in a void pointer to an array initialized in the right size. Note that the first node of NSI returns the number of elements required in the table.  Anyone have any idea what I'm doing wrong here?

  In LabVIEW, when a table is in a cluster - cluster don't detain actually table but sort of a pointer that points to the table. If you need the cluster to contain 32 to 32 Add to the cluster. See the VI attached to how it's supposed to be done.

• Call the library function does not find the DLL in the directory where are my LLBs

  I'm using LabVIEW 8.6.  I have a set of screws in several LLBs.  All LLBs located in a directory.  Most of my screws is wrappers for the functions in a DLL.  I was told to put my DLL in the directory where are the LLBs, and apparently this is how the previous programmer has worked (using an earlier version of LabView).

  In the configuration of the library call, I've specified .dll without path.  (This is how we want our screws are an API that will integrate other programmers, so I don't know where they put things and I can't use absolute paths).

  When I insert the VIs in LabVIEW, LabVIEW can not find the DLL and wonder of spotted.  It's just that here in the directory with the LLBs and when I double click on it, everything works fine.  However my absolute path to the DLL now appears in the library to call configuration, and we don't want that.

  Does anyone know how to make this work?  I guess the location of the screw (or LLBs, in this case) should be the current directory and thus Windows search there for the DLL.  However, it seems that this is not the case (in the least, in the latest version of LabVIEW).

  Thank you.

  Batya

  Well someone using your library should not have to dig into your screws and do it all on his own. Instead your library must wrap that and hide disorders it altogether.

  The cluster of error has been added when the dynamic path option has been added. It is not useful hide this error output, so it's always there. As well as the dynamic path, there was the improved error handling added the CLN. One of them is that the level of verification when calling function errors (exception handling) can be specified. I guess that some of these options may generate an error code instead of bring up a dialog box, as they did before and that the output of error code can be useful even in the case of static calls.

  As to what you want to do, I would have long managed that with a DLL that has essentially the same functions as your other wrapper DLLs and an initiliasation function that returns a pointer to a structure of functional distribution based on the actual DLL you want to call. Quite like what an object-oriented function dispatch table is. Then, when your interface initilising you call initialize function and specify the device interface/type that you want to use and after that all other functions take a pointer extra function parameter expedition as the first parameter, in addition to the parameters of the real function. This dispatch function pointer would be just a pointer to a structure that contains the table of function for this interface pointers and the sake of LabVIEW would simply be an integer of size pointer.

  The wrapper function then checks the pointer structure validity send feature and call the actual function with the remaining parameters. It is a C programming and may require a planning and desigining the different interfaces to facilitate this kind of technique of the expedition, but it will certainly pay to long-term and make your library even can be used in previous versions of LabVIEW, so that VB etc. without delicate dynamic loading in the level high, programming environment.

  Rolf Kalbermatter

• How to read / write to a HID device with call a library function?

  I had tons of problems to read from a device USB HID in VISA. I had no problem make a driver for him and write it in LabVIEW. However, whenever I try to read using Read Visa, Visa USB Control In or interrupt USB event get different types of error messages.

  I decided to give up this route and talk to the device through hid.dll, setupapi.dll and any other .dll that I need to use. The problem is that I'm not sure I correctly use the nodes to call a library function... I've seen several KB articles that explain how to set up the nodes call library feature, but I need more information. I can configure stuff and sometimes get things to work, but I don't always know what each specific selections in Settings tab is doing. Can someone give me more detailed information on what do the settings tab and all of its components?

  Thank you

  Matt

  Have you looked HERE?

  Shane.

• Fatal error: Call to undefined function get_header() in /home/rascal98/public_html/index.php on line 1.

  I received this message: Fatal error: Call to undefined function get_header() in /home/rascal98/public_html/index.php on line 1.  This has happened after that I tried to load a model of Web site using FTP Filezilla.  I asked advice of HostGator support, but offered only man I should have a backup.  Not much help at the moment.  I may be in the last two days charged that more than just a Web site template to the same file or directory public_html, it is called. I tried to reverse all this leaving the Site Manager to erase all files.  That did not help.  I'm stuck because I can't establish a few areas I need.  The terminology "fatal error" was quite worried.

  Hi rascal98,

   

  Welcome to Microsoft Answers Forums.

  The question you have posted is related to the area and would be better suited to the TechNet community. Please visit the link below to find a community that will provide the best support.

  http://social.msdn.Microsoft.com/forums/en-us/category/iedevelopment/

  Halima S - Microsoft technical support.

  Visit our Microsoft answers feedback Forum and let us know what you think.

• Flash cannot call the javascript function in the local html file

  Hello!

  Us is to develop our first application on Playbook. It is an html file including a flash file and javascript code. Everything is packed in. in the file bar, a config.xml file and has been correctly loaded into the Playbook. Everything works locally (no web access)

  Everything works well except when we use an ExternalInterface.call("saveglobalscore",score) in flash that calls a javascript function in the .html file.

  In the actionscript3, we selected the "authorized local file access" and put the 'Security.allowDomain("*) '.

  Any ideas? Thank you!

  External interface tries to access the files packaged locally is currently a known issue.  I have not really of a calendar when or if this can be resolved.  It may be in the code base of flash.

• How to call stunts c ++ function from javascript

  Hello

  Is it possible to call stunts c ++ functions of javascript cascading bb10 without use of qml files. This is a very important part of my application.

  Where runs JavaScript code?

  If it is in Web mode, then the docs document something where you can call "navigator.cascades.postMessage ()" JavaScript and the other side (which could be C++) watch the messageReceived() signal.

  If this isn't in a WebView, where is it if not in QML?