Check if a path exists or if it is not a path

Similar Questions

• How to check if a table exists in the database or not?

  People,

  Hello. I use the server of Oracle 11 GR 1 material with Oracle Linux 5 database.

  My instance of database is named HRCS90, which the user access Id is MyName, and his identification of user SYS system.

  I have a few questions about user ID to access the PSRECDEL and PSROLEDEFN table in the HRCS90 database as below:

  SQL > select * from PSRECDEL;

  His output under the SYS user: table or view does not exist.

  His output under user myName: no selected lines. This means that the table THAT PSRECDEL exists, and myName user can access.

  SQL > select * from PSROLEDEFN;

  His output under SYS and MyName: table or view does not exist.

  My questions are:

  How to check if a table really exists in the instance of database HRCS90 or not?

  Thanks in advance.

  
  

  If a table is present in the database, it must be present in DBA_OBJECTS. If he fell, he would be present in the TRASH. If he fell purged, it is not available in the database, Cant it confirm you this object is not in the database? See a little test here

  SQL > CREATE TABLE TESTTAB (ID);

  Table created.

  SQL >

  SQL > SELECT MASTER, OBJECT_NAME FROM DBA_OBJECTS WHERE OBJECT_NAME = 'TESTTAB.

  OBJECT_NAME OWNER

  ------------------------------ ---------------------------------------------

  SCOTT TESTTAB

  SQL >

  -Drop table (without purging. So now, it will be in the recyclebin)

  SQL > DROP TABLE TESTTAB;

  Deleted table.

  SQL >

  SQL > SELECT * FROM DBA_RECYCLEBIN WHERE ORIGINAL_NAME = "TESTTAB;

  OBJECT_NAME ORIGINAL_NAME OWNER

  ------------------------------ ------------------------------ --------------

  SCOTT BIN$ 8LKloIv3SYWA0WJ33GS + Aw == $0 TESTTAB

  Now see this case when you use PURGE. If it won't move the table to the trash. First of all I am clear the existing dba_recyclebin to the user entries. Then I'm falling table using purge.

  SQL > PURGE TABLESPACE USERS USER SCOTT.

  Purged tablespace.

  SQL >

  SQL > SELECT * FROM DBA_RECYCLEBIN WHERE ORIGINAL_NAME = "TESTTAB;

  no selected line

  SQL > CREATE TABLE TESTTAB (ID);

  Table created.

  SQL >

  SQL > SELECT MASTER, OBJECT_NAME FROM DBA_OBJECTS WHERE OBJECT_NAME = 'TESTTAB;

  OBJECT_NAME OWNER

  ------   ----------

  SYS TESTTAB

  SQL > DROP TABLE TESTTAB PURGE;

  Deleted table.

  SQL > SELECT * FROM DBA_RECYCLEBIN WHERE ORIGINAL_NAME = "TESTTAB;

  no selected line

  SQL > SELECT MASTER, OBJECT_NAME FROM DBA_OBJECTS WHERE OBJECT_NAME = 'TESTTAB;

  no selected line

  Since there is no entry to both DBA_OBJECTS and DBA_RECYCLEBIN. So that means that the particular object is not in the database.

• Check if a path of the file exists

  I need to check if a file exists. He started to do this by searching for the first file expected in a sequence and that worked, but only when the artists returned correctly. To find this file, I was reading in what was expected and if it has returned true, pass the path of the next folder. Basically, I'm trying to go through the numbered files and find the most recent version, IE version_01

  Probably something like this:

  var myFolderPath = / / your folder path

  var myFolder = new Folder (myFolderPath);

  If {(myFolder.exists)

  do things

  } else {}

  do other things

  }

  Dan

• Check if a path is valid

  I need to check if a path entered by the user is valid.

  It is to say I want to be able to return an error if the path is empty, doesn't point to the right type (.csv in this case) or the file points to an invalid location (i.e. a typo in user).

  The first and the second are simple (using 'Empty string/path' and a simple string comparison, respectively), but I don't know how to implement the third.  I tried the "Not a number/path/refnum" block, but nothing helped.

  Any suggestions gratefully received.

  Dan

  Hi Dan,.

  What version of LabVIEW are you using? In LabVIEW 8.5 year later, there is a function "check if the file or folder exists. If you use an earlier version, then you can try to open this file and check if you get an error.

  Mike

• How to check if a file exists?

  Hi guys.

  I am running javascript in Acrobat .pdf file created in LiveCycle Designer.

  I need to check in silence if an external file outside the open document (C:\something\something\something.pdf) exists or not.

  I understand that I'm only able to do this as a function of confidence within a script to the folder level javascript.  I am familiar with those.   The problem is, I don't know what function I should use and will have a difficult time in the research on it.

  Try to use: doc.exists?

  Try to open the document with a function and catch the error if the file does not exist?

  I'm not so sure that if I just spend my path as a string, say "/ C/Something/something/something.pdf" or if I should first deal with the file as an object like:

  var myFile = new File("/C/Something/something/something.pdf") (which was not in Acrobat... don't try to run it as a function of confidence)

  Please notify.

  Thank you!

  I finished this figure myself.

  XFA/JavaScript in my paper, I call a custom function that I have written and pass a string (or a string variable containing) my file path for that I would like to check:

  if(typeof(MJS_FileExists) == "function") {
      try {
          if(MJS_FileExists("/C/something/somethingelse/filetocheckfor.pdf") == true) {
              xfa.host.messageBox("file is there");
          } else {
              xfa.host.messageBox("file is NOT there");
          }
      }
      catch(e) {
          app.alert("Processing error: "+e)
      }
  }
  

  The function I call is a folder level javascript.   You have to maybe do some Googleing on how and where to install them.   In the my file .js file real javascript level where the function is housed I use:

  var MJS_FileExists = app.trustedFunction(function(filename) {
      app.beginPriv();
      var existingDoc = false;
      try {
           var checkDoc = app.openDoc(filename);
           checkDoc.closeDoc();
       existingDoc = true;
      } catch(e) {
       existingDoc = false;
      }
      return existingDoc;
      app.endPriv();
  });
  

  It took me a lot of trial and error.  It sucks there is not a lot of in on the internet on how to do it via Acrobat / Live Cycle.   Hope this helps someone else.

• Check if certain files exist

  Hi all
  
  I wrote a reference guide and I was wondering if I can check if certain files exist on a page.
  If it exists then I can send the user to a page.
  And if not, they will see another page.
  Grateful if someone points me to the right direction.
  
  Thank you
  Karen

  Hello Cognethos,

  You must use the double backslashes in your path of the file reference. Your script is OK except this line:
  If (FSO. FileExists ("C:\Program Files\Common Files\My file.txt Directory\My"))

  It should read this:
  If (FSO. FileExists ("file.txt C:\\Program Program Files\\My Directory\\My"))

  The technical reason for this is that there are special characters that you cannot use directly in a string. In this case, your path is the chain. Backslash is be one of the special characters that you cannot use directly in a string. To work around this problem, you must do what is called an escape sequence. In this case, the escape sequence for------is------.

• DB tools: SELECT to check if the record exists?

  I use the database connectivity toolset.

  Our IT guy advised me that I should use the SELECT clause to check if a record exists in a table.

  When I send LabVIEW through a UDL file:

  SELECT id

  FROM [ProdTestData]. [dbo]. [TestResults]

  WHERE MONumber = 'C00322. '

  I get nothing back. See attachment.
  When the guys in IT are doing the same to their API, they receive in return a number.

  I must add a FETCH or something else to my VI?

  Try adding DB tools Fetch Recordset Data.vi between your application VI and the free VI.

• How can I check if a file exists in the CVI real-time?

  Also, it would be nice if designated so help file functions have been supported in real time or now.

  I tried this:

  If (GetFileAttrs (DataFileName, NULL, NULL, NULL, NULL) == - 1).

  You can check if a file exists in the CVI real-time using GetFileInfo.

  CVI provides a list of the available functions in the CVI real-time here: CVI real-time functions

• Msconfig, boot.ini tab, check all boot paths

  It seems that the next line in the boot.ini file does not refer to a valid operating system:

  C:\CMDCONS\Bootsect.dat="Microsoft Windows Recovery Console" / cmdcons

  You want to delete the boot.ini file? y/n

  Hi, the above msg has been received after the installation of the recovery console (from my xp pro svc pk 2, reinstallation cd). The installation went well. However, while I was checking the boot.ini tab in msconfig, there was a box to "check all boot paths", I selected, and the first time I checked yes, thus losing my option console startup recovery upward. Joselbarra helped me on a previous post to make it back as I still had the files on the c: drive. After that I got the option to start xp pro or the recovery console, I went back to msconfig and selected the "check all boot paths" again. The same msg appeared but this time I chose no because I didn't lose my option to start again.

  Can someone tell me why this msg makes its appearance? Joselbarra, after helping me to recover my option put the same line on its charger to start and got the same msg, but couldn't understand why. As it was said the previous post, I decided to post this question in itself.

  I have a Dell Dimension 3000, running Windows XP pro and IE8 with svc pk 3, completely developed to date.

  Thanks in advance for any help. Liz.

  I think it's just the way it works.

  Almost all of the systems that I touch has or will have the installed Recovery Console and I looked a little and msconfig did the same thing on them...  I never really use this feature in msconfig too often I guess or I would have noticed and taken note of it (but I have now).

  Whenever msconfig quirks get out a bit, the usual answer (and that's a fair answer) along the lines of: "msconfig is a troubleshooting tool..." "... blah, blah, blah (or if you are a fan of Seinfeld: blah, blah, blah)."  It's true.

  I will focus it a little bit later or maybe someone else will enlighten us.

  It's a little awkward for me too now.

  I quit your job and watch... If there is no activity in 5-10 days, the response of the Support Engineer will be suddenly marked as ipso facto "Answer" for three reasons:

  1. it is a response to a self (or MSM)
  2. it has a link to a Microsoft KB article
  3. the wire has been idle for 5-10 days

  It does not work or be right.  This seems to be the way it works here.

• How to check if a value exists in a column

  Hello Experts,

  version: 10.1.0.5

  I am a novice in pl/sql programming. I am trying to create a procedure that checks if a value exists in a column and if it is not it inserts. Here's the procedure and errors,

  SQL > CREATE OR REPLACE PACKAGE BODY manr.audit_pkg

  2 PROCEDURE audit_proc (number of p_sessionid, p_username VARCHAR2, date of the p_date) IS

  3 BEGIN

  4 If p_sessionid not in (select manr.audit_history sessionid)

  5. can

  6 INSERT INTO manr.audit_history VALUES (p_sessionid, p_username, p_date);

  7 validation;

  8 end if;

  9 END;

  10 END audit_pkg;

  11.

  WARNING: The body of a Package created with compilation errors.

  SQL > show error

  PACKAGE BODY HÉLÈNE errors. AUDIT_PKG:

  LINE/COL ERROR

  -------- -----------------------------------------------------------------

  4/1 PL/SQL: statement ignored

  4/22 PLS-00405: subquery not allowed in this context

  Could you please tell me where I'm wrong. Thanks for your help.

  Rocky

  Hello

  If p_sessionid not in (select manr.audit_history sessionid)

  Try:

  .....

  Select count (*) in the v_sessionid of manr.audit_history

  where sessionid = p_sessionid;

  If v_sessionid > 0 then

  .....

  on the other

  ....

  end if;

  Ziut

• How to check if a node exists in the XML file?

  I was asked to program a method to import data from xml files in our Coldfusion 8 Web site, I am new to the use of XML.

  My method worked however I encountered the following error:

  Element NETWORKORDER. SECONDARYADDRESS. CONTACTNAME is undefined in MYDOC.

  Investigation on the node in the XML file was not present.

  Is there a method I can use to resolve this error by checking if a node exists in the xml file, which works with my current code below?

  <!--> reading XML file
  < cffile action = "read" file = "D:\website\XML\#FileName#" variable = "myxml" >
  < cfset mydoc = XmlParse (myxml) >

  <!--> to extract data from the XML of NDS file
  < cfset aPrimaryContactName =(#mydoc.NetworkOrder.PrimaryAddress.ContactName#) >
  < cfset aPrimaryContactNumber =(#mydoc.NetworkOrder.PrimaryAddress.ContactNumber#) >
  < cfset aPrimaryContactNumber = tostring(#mydoc.NetworkOrder.PrimaryAddress.ContactNumber#) >
  < cfset aPrimaryContactAddressLine1 =(#mydoc.NetworkOrder.PrimaryAddress.line1#) >
  < cfset aPrimaryContactAddressLine2 =(#mydoc.NetworkOrder.PrimaryAddress.line2#) >
  < cfset aPrimaryContactAddressLine3 =(#mydoc.NetworkOrder.PrimaryAddress.line3#) >
  < cfset aPrimaryContactAddressLine4 =(#mydoc.NetworkOrder.PrimaryAddress.line4#) >
  < cfset aPrimaryContactAddressLine5 =(#mydoc.NetworkOrder.PrimaryAddress.line5#) >
  < cfset aPrimaryContactCity =(#mydoc.NetworkOrder.PrimaryAddress.City#) >
  < cfset aPrimaryContactPostcode =(#mydoc.NetworkOrder.PrimaryAddress.PostalCode#) >
  < cfset aPrimaryContactCounty =(#mydoc.NetworkOrder.PrimaryAddress.CountrySubdivision#) >
  < cfset aPrimaryContactCountryCode =(#mydoc.NetworkOrder.PrimaryAddress.CountryCode#) >
  < cfset aPrimaryContactCountry =(#mydoc.NetworkOrder.SecondaryAddress.Country#) >
  < cfset aSecondaryContactName =(#mydoc.NetworkOrder.SecondaryAddress.ContactName#) >
  < cfset aSecondaryAttentionOfName =(#mydoc.NetworkOrder.SecondaryAddress.AttentionOfName#) >
  < cfset aSecondaryContactNumber =(#mydoc.NetworkOrder.SecondaryAddress.ContactNumber#) >
  < cfset aSecondaryContactAddressLine1 =(#mydoc.NetworkOrder.SecondaryAddress.line1#) >
  < cfset aSecondaryContactAddressLine2 =(#mydoc.NetworkOrder.SecondaryAddress.line2#) >
  < cfset aSecondaryContactAddressLine3 =(#mydoc.NetworkOrder.SecondaryAddress.line3#) >
  < cfset aSecondaryContactAddressLine4 =(#mydoc.NetworkOrder.SecondaryAddress.line4#) >
  < cfset aSecondaryContactAddressLine5 =(#mydoc.NetworkOrder.SecondaryAddress.line5#) >
  < cfset aSecondaryContactCity =(#mydoc.NetworkOrder.SecondaryAddress.City#) >
  < cfset aSecondaryContactPostcode =(#mydoc.NetworkOrder.SecondaryAddress.PostalCode#) >
  < cfset aSecondaryContactCounty =(#mydoc.NetworkOrder.SecondaryAddress.CountrySubdivision#) >
  < cfset aSecondaryContactCountryCode =(#mydoc.NetworkOrder.SecondaryAddress.CountryCode#) >
  < cfset aSecondaryContactCountry =(#mydoc.NetworkOrder.SecondaryAddress.Country#) >

  Since you already have the XML parsed in a document, the easiest is to use xmlSearch(). Take a look at the doc, it is pretty easy to use. Something as simple as:

  To the most complex as:

  And in both cases:

  Read the doc and google is your friend "coldfusion xmlsearch.

• Check if the user_id exists in the LDAP server

  Hello

  I was wandering if their whole approach to communicate with the LDAP server. I have a requirement where - in that I have a table of database users; I need an audit of validation against the LDAP server to check if the user exists in the LDAP server or not and if it is an active user. I was watching the DBMS_LDAP API; but don't know how to use it. Please help me with one possible approach. I use the Oracle 10 g R2 database.

  Any help is appreciated.

  Thank you

  Orton

  That DBMS_LDAP must be used, in three basic steps. To connect to the server. To authenticate with a username and password (assuming that anonymous access is not allowed). A query (by using a LDAP search) if the username exists.

  And that's essentially what the code example.

  My sample code uses a service account to open an LDAP session - as anonymous access does not have the code perform the research needed in my case. The code also uses a search based on the Security Accounts Manager (SAM) account name as search criteria - that is the username for a Windows (used by the user to authenticate to the domain NTLM) account. This can be changed to a different search criteria.

  One thing about LDAP is not simplistic. There is not a single LDAP command which will tell you if a username exists, or not. At least a simple search to do - after the connection to the server and authentication with the server.

  The code example shows most of these pieces, you will need to do your checking of user using LDAP name.

• Fastest way to check if a file exists

  Hello
  
  I have a table with more than 100 M records. What is the fastest way to check if a record exists or not. Currently I use Oracle 11.2. Here is the SQL code I used, id is the primary key of the table_test.
  
  Select count (*) from existFlag
  of table_test
  where id = testID
  ;

  Yes, you could use double fusion using the clause, but a line of K + 10 k 10 inserts a line MERGE statements will be much less effective than 1 INSERTING rows 10 K + 1 MERGER of 10 K lines.

  SY.

• How to check if a folder exists

  Hello
  
  I have a custom filter component:

  public class BarcodeMetadataFilter implements FilterImplementor{
  }

  I check here if the file exists in xCollectionId value, so I have two qustions:
  
  (1) should what service I call to check if the file exists?
  (2) how to call this service from the filter?
  
  Kuba

  Call a service such as COLLECTION_GET_INFO. Pass the parameter dCollectionID which must be xCollectionID. If you receive and error, it may mean that the folder does not exist. You should check the error (exception) to ensure what he wants to say to you is that the folder does not exist.

  http://docs.Oracle.com/CD/E23943_01/doc.1111/e11011/c07_folders.htm#i1082467

  The following blog post will show you how to run a service, a filter: http://jonathanhult.com/blog/2012/06/execute-a-service-from-a-java-filter/

  Jonathan
  http://jonathanhult.com

• How to check if a string exists in varray or not

  Hi all
  
  How to check if a string exists in varray or not.
  
  

  Version Details 
  
  
  BANNER
  ----------------------------------------------------------------
  Oracle Database 10g Express Edition Release 10.2.0.1.0 - Product
  PL/SQL Release 10.2.0.1.0 - Production
  CORE    10.2.0.1.0      Production
  TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
  NLSRTL Version 10.2.0.1.0 - Production

  SQL> get test
    1  DECLARE
    2     TYPE dnames_var IS VARRAY(7) OF VARCHAR2(30);
    3     dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5    if dept_names.exists('Shipping')
    6    then
    7       dbms_output.put_line('Exists ................');
    8    end if ;
    9  /*   DBMS_OUTPUT.PUT_LINE('dept_names has ' || dept_names.COUNT
   10                          || ' elements now');
   11     DBMS_OUTPUT.PUT_LINE('dept_names''s type can hold a maximum of '
   12                           || dept_names.LIMIT || ' elements');
   13     DBMS_OUTPUT.PUT_LINE('The maximum number you can use with '
   14         || 'dept_names.EXTEND() is ' || (dept_names.LIMIT - dept_names.COUNT));
   15  */
   16* END;
   17  
   18  /
  DECLARE
  *
  ERROR at line 1:
  ORA-06502: PL/SQL: numeric or value error: character to number conversion error
  ORA-06512: at line 5
  
  
  SQL> 
  
  Any help in this regard is appreciated ...

  Thank you
  Prakash P
  
  Published by: prakash on April 29, 2012 05:42

  EXISTS checks for the existence of an element, not a value. Since you're using VARRAY (btw, it is not recommended), your only choice is a loop through:

  SQL> DECLARE
    2       TYPE dnames_var IS VARRAY(7) OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      for i in 1..dept_names.count loop
    6        if dept_names(i) = 'Shipping'
    7          then
    8            dbms_output.put_line('Exists ................');
    9            exit;
   10        end if;
   11      end loop;
   12  END;
   13  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL>  
  

  If you use the nested table, you can use MEMBER, SUMBULTISET, MULTISET EXCEPT:

  SQL> DECLARE
    2       TYPE dnames_var IS TABLE OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      if 'Shipping' member of dept_names
    6      then
    7         dbms_output.put_line('Exists ................');
    8      end if ;
    9  END;
   10  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL> DECLARE
    2       TYPE dnames_var IS TABLE OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      if dnames_var('Shipping') submultiset dept_names
    6      then
    7         dbms_output.put_line('Exists ................');
    8      end if ;
    9  END;
   10  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL> DECLARE
    2       TYPE dnames_var IS TABLE OF VARCHAR2(30);
    3       dept_names dnames_var := dnames_var('Shipping','Sales','Finance','Payroll');
    4  BEGIN
    5      if dnames_var('Shipping') multiset except dept_names = dnames_var()
    6      then
    7         dbms_output.put_line('Exists ................');
    8      end if ;
    9  END;
   10  /
  Exists ................
  
  PL/SQL procedure successfully completed.
  
  SQL> 
  

  SY.

• UTL_FILE. OPEN_FILE question to check if a file exists and is not empty

  Hello
  
  I'm writing a code in 3 separate files are created based on certain conditions of parameter for the call of the extract.
  Say that the parameters are NULL, 'A' and 'B '.
  When the Null State is passed to the call of the extract then it should create file A and B if the records are found. If this isn't the case, then create empty files.
  It is possible that the setting of the extract is just 'A', then it would create a file say no zero and B with file from scratch.
  Now when the extract is called with the parameter 'B' and if the file already exists and is not empty then I shouldn't touch/crash with empty folders.
  Is there a simple way I can do this to check if a file exists and is not empty?
  
  I use
  OPEN_FILE
  (gv_utl_file_path
  lv_file_name
  lv_file_handle
  );
  
  Help, please.
  Thank you

  @OP: no need to open

  SQL> declare
    2   lb_file_exist boolean;
    3   ln_size number;
    4   ln_block_size number;
    5  begin
    6   sys.utl_file.fgetattr('TEST_DIR','a.txt',lb_file_exist,ln_size,ln_block_size);
    7   if lb_file_exist then
    8    dbms_output.put_line('a Exists');
    9    dbms_output.put_line(to_char(ln_size));
   10   else
   11    dbms_output.put_line('a Not Exists');
   12   end if;
   13   sys.utl_file.fgetattr('TEST_DIR','b.txt',lb_file_exist,ln_size,ln_block_size);
   14   if lb_file_exist then
   15    dbms_output.put_line('b Exists');
   16    dbms_output.put_line(to_char(ln_size));
   17   else
   18    dbms_output.put_line('b Not Exists');
   19   end if;
   20   sys.utl_file.fgetattr('TEST_DIR','c.txt',lb_file_exist,ln_size,ln_block_size);
   21   if lb_file_exist then
   22    dbms_output.put_line('c Exists');
   23    dbms_output.put_line(to_char(ln_size));
   24   else
   25    dbms_output.put_line('c Not Exists');
   26   end if;
   27  end;
   28  /
  a Exists
  0
  b Exists
  3
  c Not Exists
  
  PL/SQL procedure successfully completed.
  

  Published by: JAC on March 30, 2012 01:21