Recursive Calls
I have implemented a logic for my requirement with a recursive call. The logic is I need to get IDs from database for a scenario. There are corresponding records for each ID.
I need to store these IDs in an array variable. Then I need to get (dependent)IDs for the fields in each ID. There may be morethan one dependent per each ID. I append these IDs to my array. Like this it goes.
The problem is if there are many levels like this, the number of database cursor count is reaching to maximum and I'm getting the error
{Microsoft OLE DB Provider for ODBC Drivers error '80004005'
[Microsoft][ODBC driver for Oracle][Oracle]ORA-00604: error occurred at recursive SQL level 1 ORA-01000: maximum open cursors exceeded }
each recursive call runs a SELECT query.
Can any one suggest me an alternate solution for this ?
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..:: The Specs:
MS Access 2000 (host charges extra for SQL/MySQL)
MS Windows Server 2003 (prod) / MS XP SP1 (dev)
..:: The setup:
The database has been setup with two tables;
tblDownloads
tblCatagories
Each "download" consists of a catagory field that corresponds to fldID in
tblCatagories. Each catagory, where the catagory is a parent, has a parent
field of value: 0 and each child, has a field with a value corresponding to
the fldID of it's parent. Code:
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I'm using the following function, which uses a recursive call. every time when I get a conf it opens a record set. So increases the cusor count. Some times I'm getting the following error:
Microsoft OLE DB Provider for ODBC Drivers error '80004005'
[Microsoft][ODBC driver for Oracle][Oracle]ORA-00604: error occurred at recursive SQL level 1 ORA-01000: maximum open cursors exceeded.
How can I avoid this ? Code:
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I have an SQL table structure full of main categories and subcategories as follows
ID (Primary key)
Title ( varchar)
Content ( varchar)
ParentID ( this will refer to the primary key of the main category records)
Hope I'm making sense anyway. Has anyone tackled this successfully?
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I need to write a recursive function and treeview using asp. It will show the manager and staffs under him/her. There will not be a fixed layer for the tree. Can someone guide me how to write?
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i am working on ecommerce site and would like to display the categories (and sub categories) from the db recursively,
i did it but i also want to add the level of each category like :
main_cat_1 (level 1)
--------sub_1 (level 1_1)
--------sub_2 (level 1_2)
------------sub_sub_2 (level 1_2_1)
------------sub_sub_2 (level 1_2_2)
------------sub_sub_2 (level 1_2_3)
--------sub_3 (level 1_3)
main_cat_2 (level 2)
main_cat_3 (level 3)
--------sub_3 (level 3_1)
and so on ... how can i do that ?
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I have a table inside access DB built like a tree, every record(=node) is a "title" that has a 'name' and 'paret' fields (and some other fields that are not relevant).
I'm simpley trying to print out all the tree's records but I keep getting only a path from the root record to the first leaf.
I have a recursive sub called 'deleteTitles' that needs to perform this task.
The var 'currentTitle' is the root node.
On every iteration of the sub I print one son of the current node 'T'. Code:
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I have adapted the code below but it gives me an error "exception occcured"
after the first recursion. Any ideas what can be done to make the following code work. Code:
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I've recently made a recursive sub in asp to search all folder and subfolders of the map "file" for a certain filename. It will list all results and show a link.
Now there's still a bug. I can't place files in the root because this script won't find 'em. The root i mean files.
If i replace the empty dir with Server.MapPath("") it will show the files in the root but it will show 'em twice. Code:
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I'm terribly sorry if this has been asked before, but I need a clear explenation without having to sift through other bits of information.
Can somone explain how functions work in asp (not asp.net)? I need to call a function that returns a value, and I get an error when I have a return statement in there. If there is no "return" statement, then what do you use to get this value back?
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I am using WindowsXP and a book to try to learn ASP.
The book instructed me to install IIS & .Net Framework v1.1 (which I did)
In the book they gave me the following code:
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I'm very interested in finding out what ways you experts out there have made your data dips more efficient in your asp (not asp.net) code.
I have a wizard-type application that dips into the database with each page, I know there's a better way to do this out there, just pressed for time and can't think right now.
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I need to implement an application that receives http calls from a remote
client, do something with it and returns some feedback. I want to use IIS
(version 6) as my front end http server (with https and ssl services) which
will facilitate all the requirements of a http server and then foreword the
incoming call to my application and will return the process result to the
client at the end.
Does IIS support this? And if yes - what are the requirement from my application to use it (built in .net if anyone interested)?
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Is there a way I can see how many database calls were made from my script to the db server to check how well my SQL queries are formed?
I get the time taken to execute the queries, but in that time taken, I want to know how many calls were made to the DB server. Is it possible?
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I'd want to make a custom class that will generate breadcrumb navigation for my site via a recursive query, e.g. Home > Page1 > Subpage 1. I've structured my database with hierarchical parent/child relationships.
I'm using ASP VBScript, and I have a table structure similar to the following: Code:
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I'm developing web surveys where users logon to a web survey and answer up
to about 50 questions, one after the other, shown only one question at a
time. The answers are saved in a database.
A fellow developer and I are discussing when is the best time to save the
answers. We have two approaches in mind:
Approach 1:
After each question is answered, the answer is saved in the database.
Sessions are only used to store the User ID.
Approach 2:
After each question is answered, the answer is saved in a session variable.
When the user has finished the entire survey, all the answers are saved at
once in the database. Also, if the user logs out, or if the session times
out, the answers answered so far are all saved in the database at once.
The amount of actual data sent to the database is the same in both
approaches, but Approach 1 have much more frequent calls to the DB, thus
creating an overhead of opening and closing connections. I'm not sure how
significant that is. On the oter hand, Approach 2 store a lot of data in
sessions. I'm not sure how bad a thing that is.
Which approach is better and for what reasons? I'd be happy to supply more
information if needed.
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I am looking for a tool/product (commerical or shareware) to correlate
classic ASP pages (not ASP.NET) with timings of ADO calls made from
each ASP page. The information I am looking for are
T1, url = http://..../product.asp,
DB Server=SQLSvr1, DB Name=products
ADODB.Connection.Open 10ms
ADODB.Recordset.Open 189ms
...
T2, url = http://.../search.asp,
DB Server=SQLSvr2, DB Name=productindex
ADODB.Connection.Open 15ms
ADODB.Connection.Execute 350ms
...
It would be nice if the tool can automatically rewrite existing ASP
pages if necessary.
This would be a good performance monitoring tool for classic ASP
pages.
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Any body know of a resource that compares/benchmarks the expense (in terms of milli seconds, or server load) of using various programing options?
I know a lot of articles and forum posts reccomend best practices between functions and programming options, but I would be interested in some type of definitive benchmark to decide between various prgramming options, depending on the need.
For example, I can call a Recordset and quickly write it into an array, so that the connection can be closed even before I write the data to the HTML page. This would save conection time and server resources, but I'd like to be able to judge the worth when considering coding it.
Every time I do a Server.Transfer how expensive is it to the server? How much am I loading the server with Session varaibles? If I store some info in a cookie, but have to call it, how long will that take? Am I using up server resources by creating large arrays?
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I developed a website that posts data to another url via the Inet object.
I should mention that the posting code is wrapped in a VB 6 dll, and that
dll is called from ASP. Code:
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