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  • Getting error on inserting tuple values in postgreSQL table using python

    - by rahman.bd
    Hello, I want to keep last.fm's user recent music tracks list to postgresql database table using pylast interface.But when I tried to insert values to the table it shows errors.Code example: for i, artist in enumerate(recent_tracks): for key in sorted(artist): cur.execute(""" INSERT INTO u_recent_track(Playback_date,Time_stamp,Track) VALUES (%s,%s)""", (key, artist[key])) conn.commit() cur.execute("SELECT * FROM u_recent_track;") cur.fetchone() for row in cur: print ' '.join(row[1:]) cur.close() conn.close() Here "recent_tracks" tuple have the values for example: artist 0 - playback_date : 5 May 2010, 11:14 - timestamp : 1273058099 - track : Brian Eno - Web I want to store these value under u_recent_track(Tid,Playback_date,Time_stamp,Track).Can anybody have idea how to sort out this problem? when I tried to run, it shows error: Traceback (most recent call last): File "F:\JavaWorkspace\Test\src\recent_track_database.py", line 50, in <module> VALUES (%s,%s,%s)""", (key, artist[key])) IndexError: tuple index out of range Thanks in advanced!

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  • handling Concurrency in SQL SERVER 2005

    - by sameer
    Hi, I have one question for you, if you can answer and refer resource it will be great help. I have a scenario where i need to create a appointment slot and a serial no for each slot memberwise. ex: Member Id |App Slot # 1|1 1|2 2|1 2|2 1|3 what im doing is take the Max slot number,increamenting it and insert it memberwise. but the problem is concurrent user can create a slot when i take the max slot after that if any other user insert the slot the value that im working with is no more valid, how to over come this problem Thanks & Regards, Sameer

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  • Rolling back file moves, folder deletes and mysql queries

    - by Workoholic
    This has been bugging me all day and there is no end in sight. When the user of my php application adds a new update and something goes wrong, I need to be able to undo a complex batch of mixed commands. They can be mysql update and insert queries, file deletes and folder renaming and creations. I can track the status of all insert commands and undo them if an error is thrown. But how do I do this with the update statements? Is there a smart way (some design pattern?) to keep track of such changes both in the file structure and the database? My database tables are MyISAM. It would be easy to just convert everything to InnoDB, so that I can use transactions. That way I would only have to deal with the file and folder operations. Unfortunately, I cannot assume that all clients have InnoDB support. It would also require me to convert many tables in my database to InnoDB, which I am hesitant to do.

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  • I need a fast runtime expression parser

    - by Chris Lively
    I need to locate a fast, lightweight expression parser. Ideally I want to pass it a list of name/value pairs (e.g. variables) and a string containing the expression to evaluate. All I need back from it is a true/false value. The types of expressions should be along the lines of: varA == "xyz" and varB==123 Basically, just a simple logic engine whose expression is provided at runtime. UPDATE At minimum it needs to support ==, !=, , =, <, <= Regarding speed, I expect roughly 5 expressions to be executed per request. We'll see somewhere in the vicinity of 100/requests a second. Our current pages tend to execute in under 50ms. Usually there will only be 2 or 3 variables involved in any expression. However, I'll need to load approximately 30 into the parser prior to execution. UPDATE 2012/11/5 Update about performance. We implemented nCalc nearly 2 years ago. Since then we've expanded it's use such that we average 40+ expressions covering 300+ variables on post backs. There are now thousands of post backs occurring per second with absolutely zero performance degradation. We've also extended it to include a handful of additional functions, again with no performance loss. In short, nCalc met all of our needs and exceeded our expectations.

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  • How do I impliment a hidden field in a post form so users can't accidentally double post? (PHP/Mysql

    - by ggfan
    When users submit a form, they will sometimes click refresh or backspace then resubmit which causes multiple entries in mysql. How can i prevent mysql from allowing more than 1 of the same entry? People suggested a hidden field with a value, but how do I use that? <label for="state" class="styled">State:</label> <input type="text" id="state" name="state" value="<?php if (!empty($state)) echo $state; ?>" size="30" /><br /> //a hidden field of a certain value? ________________________________________ <input type="submit" value="Post Ad!" name="submit" /> //php to insert to mysql $query4 = "INSERT INTO posting (state) VALUES ('$state')"; mysqli_query($dbc, $query4);

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  • Troubleshoot MySQL query

    - by Victor
    I need help with this code, it doesent insert the values to my database. Probably a simple problem but it's late here in Sweden so i would appriciate if someone could have a look at this and tell me what's wrong: include "../../inc/mysql_config.php"; $to = mysql_real_escape_string($_POST['to']); $message = mysql_real_escape_string($_POST['message']); mysql_query("INSERT INTO messages (to, message) VALUES ('".$to."', '".$message."')"); Every variable have an value, double checked that and the mysql_config.php is working.

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  • Fastest way to convert a list of doubles to a unique list of integers?

    - by javanix
    I am dealing with a MySQL table here that is keyed in a somewhat unfortunate way. Instead of using an auto increment table as a key, it uses a column of decimals to preserve order (presumably so its not too difficult to insert new rows while preserving a primary key and order). Before I go through and redo this table to something more sane, I need to figure out how to rekey it without breaking everything. What I would like to do is something that takes a list of doubles (the current keys) and outputs a list of integers (which can be cast down to doubles for rekeying). For example, input {1.00, 2.00, 2.50, 2.60, 3.00} would give output {1, 2, 3, 4, 5). Since this is a database, I also need to be able to update the rows nicely: UPDATE table SET `key`='3.00' WHERE `key`='2.50'; Can anyone think of a speedy algorithm to do this? My current thought is to read all of the doubles into a vector, take the size of the vector, and output a new vector with values from 1 => doubleVector.size. This seems pretty slow, since you wouldn't want to read every value into the vector if, for instance, only the last n/100 elements needed to be modified. I think there is probably something I can do in place, since only values after the first non-integer double need to be modified, but I can't for the life of me figure anything out that would let me update in place as well. For instance, setting 2.60 to 3.00 the first time you see 2.50 in the original key list would result in an error, since the key value 3.00 is already used for the table.

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  • IIS site always returns 404 to WinMo emulator

    - by Derick Bailey
    I'm running Win7x64 Ultimate with Visual Studio 2008. I have a website built in ASP.NET 3.5 and hosted via IIS on my box. I can run the website perfectly fine and I can hit all of the web services that I have built in the website, using a web browser. When I pull up my Windows Mobile 6 emulator and hit the site (using my IP address) it always returns a 404 error. I have the emulator cradled w/ Device Emulator Manager and I can interact with the emulated device normally. I am also able to get out to google.com and other websites w/ the emulated device. I have also verified that the emulator is hitting my box by stopping the IIS website and seeing that the WinMo emulator cannot get any response. Then when I start the site again, I get a 404 error. When I pull up my site on my local dev box via FireFox or IE using the IP address it works perfectly fine. The worst part is this worked perfectly fine a few weeks ago, when I used it last. I don't know that I've changed anything since then - I'm just trying to use the emulator to hit my site again. Help?! Update: my http requests comign from the WinMo emulator are not getting logged in the IIS log files, while my requests from FireFox on my local box are getting logged. Not sure if that helps in figuring out the problem... Update 2: I can use the ruby Webbrick server on my local box and hit that server from my emulator just fine. is in IIS not allowing me to hit the IIS site from the emu? UPdate 3: I cradled an actual WinMo device to my box with it's networking turned off and was able to hit the IIS site just fine. that makes me think it's something set up wrong in the emulator.

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  • Why doesn't this simple regex match what I think it should?

    - by Kevin Stargel
    I have a data file that looks like the following example. I've added '%' in lieu of \t, the tab control character. 1234:56% Alice Worthington alicew% Jan 1, 2010 10:20:30 AM% Closed% Development Digg: Reddit: Update%% file-one.txt% 1.1% c:/foo/bar/quux Add%% file-two.txt% 2.5.2% c:/foo/bar/quux Remove%% file-three.txt% 3.4% c:/bar/quux Update%% file-four.txt% 4.6.5.3% c:/zzz ... many more records of the above form The records I'm interested in are the lines beginning with "Update", "Add", "Remove", and so on. I won't know what the lines begin with ahead of time, or how many lines precede them. I do know that they always begin with a string of letters followed by two tabs. So I wrote this regex: generate-report-for 1234:56 | egrep "^[[:alpha:]]+\t\t.+" But this matches zero lines. Where did I go wrong? Edit: I get the same results whether I use '...' or "..." for the egrep expression, so I'm not sure it's a shell thing.

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  • Queue-like data structure with fast search and insertion

    - by Max
    I need a datastructure with the following properties: It contains integer numbers, no duplicates. After it reaches the maximal size the first element is removed. So if the capacity is 3, then this is how it would look when putting in it sequential numbers: {}, {1}, {1, 2}, {1, 2, 3}, {2, 3, 4}, {3, 4, 5} etc. Only two operations are needed: inserting a number into this container (INSERT) and checking if the number is already in the container (EXISTS). The number of EXISTS operations is expected to be approximately 2 * number of INSERT operations. I need these operations to be as fast as possible. What would be the fastest data structure or combination of data structures for this scenario?

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  • MySQL Normalization stored procedure performance

    - by srkiNZ84
    Hi, I've written a stored procedure in MySQL to take values currently in a table and to "Normalize" them. This means that for each value passed to the stored procedure, it checks whether the value is already in the table. If it is, then it stores the id of that row in a variable. If the value is not in the table, it stores the newly inserted value's id. The stored procedure then takes the id's and inserts them into a table which is equivalent to the original de-normailized table, but this table is fully normalized and consists of mainly foreign keys. My problem with this design is that the stored procedure takes approximately 10ms or so to return, which is too long when you're trying to work through some 10million records. My suspicion is that the performance is to do with the way in which I'm doing the inserts. i.e. INSERT INTO TableA (first_value) VALUES (argument_from_sp) ON DUPLICATE KEY UPDATE id=LAST_INSERT_ID(id); SET @TableAId = LAST_INSERT_ID(); The "ON DUPLICATE KEY UPDATE" is a bit of a hack, due to the fact that on a duplicate key I don't want to update anything but rather just return the id value of the row. If you miss this step though, the LAST_INSERT_ID() function returns the wrong value when you're trying to run the "SET ..." statement. Does anyone know of a better way to do this in MySQL? Thank you

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  • Returning mySQL error with jQuery & AJAX

    - by kel
    I've got a form inserting data into mySQL. It works but I'm trying to add error handling in case something happens. If I break the Insert statements mySQL dies but I'm still getting a success message on the front end. What am I doing wrong? AJAX function postData(){ var employeeName = jQuery('#employeeName').val(); var hireDate = jQuery('#hireDate').val(); var position = jQuery('#position').val(); var location = jQuery('#location').val(); var interveiwer = jQuery('#interviewersID').val(); var q01 = jQuery('#q01').val(); var q02 = jQuery('#q02').val(); var q03 = jQuery('#q03').val(); var q04 = jQuery('#q04').val(); var q05 = jQuery('#q05').val(); var summary = jQuery('#summary').val(); jQuery.ajax({ type: 'POST', url: 'queryDay.php', data: 'employeeName='+ employeeName +'&hireDate='+ hireDate +'&position='+ position +'&location='+ location +'&interveiwer='+ interveiwer +'&q01='+ q01 +'&q02='+ q02 +'&q03='+ q03 +'&q04='+ q04 +'&q05='+ q05 +'&summary='+ summary, success: function(){ jQuery('#formSubmitted').show(); }, error: function(jqXHR, textStatus, errorThrown){ jQuery('#returnError').html(errorThrown); jQuery('#formError').show(); } }); }; PHP require_once 'config.php'; $employeeName = $_POST['employeeName']; $hireDate = $_POST['hireDate']; $position = $_POST['position']; $location = $_POST['location']; $interviewerID = $_POST['interveiwer']; $q01 = $_POST['q01']; $q02 = $_POST['q02']; $q03 = $_POST['q03']; $q04 = $_POST['q04']; $q05 = $_POST['q05']; $summary = $_POST['summary']; mysql_query("INSERT INTO employee (name, hiredate, position, location) VALUES ('$employeeName', '$hireDate', '$position', '$location')") or die (mysql_error()); $employeeID = mysql_insert_id(); mysql_query("INSERT INTO day (employee, interviewer, datetaken, q01, q02, q03, q04, q05, summary) VALUES ('$employeeID', '$interviewerID', NOW(), '$q01', '$q02', '$q03', '$q04', '$q05', '$summary')") or die (mysql_error());

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  • Implementing Excel 2003 COM Add-in UDF in Asyc Programming model using C#(VS 2005)

    - by Venu
    Hi: I am trying to implement a UDF using Excel COM Add-in(2003) with Visual Studio 2005 in C#. I would like to implement the UDF using async programming. The UDF is a slow operation as its results are fetched from a server. As an illustration(not a real world example),the following UDF works fine without any issue: public double mul(double number1, double number2) { return number1 * number2; } How can I do the same functionality in an async way: For example, I would like the UDF return immediately and later when the results are available from a server, I would like to update the desired cells. // This method returns immediately. public object mul(double number1, double number2) { return "calculating"; } // This method of a worker thread will update the results. public OnResultsAvailable(object result) { // Question: how should I update the cells that triggerred the calcualtions above? } Constraints: I cannot use Excel RTD as I have to work with existing codebase written using Excel C# COM Add-in. Thanks for the help. -Venu

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  • SQLITE basic syntax

    - by Doori Bar
    I seem to misunderstand a basic syntax, why this sample works: sqlite3_prepare_v2(db, "insert into test values('boo','boo',0);", strlen(querystring)+1 , &stmt, NULL); if ((rc = sqlite3_step(stmt)) != SQLITE_DONE) fprintf(stderr, "Error: sqlite3_step() %d. Error Message %s;\n",rc,sqlite3_errmsg(db)); But when I try this query: "insert into test(strtest) values('boo');" I get an error: Error: sqlite3_step() 19. Error Message constraint failed; What am I missing? table test is: "create table test (blobtest BLOB(4) NOT NULL, strtest VARCHAR NOT NULL, inttest INTEGER NOT NULL );" Thanks, Doori Bar

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  • Android ADB has moved and Eclipse is looking in the old place

    - by Peter Nelson
    I did an SDK update last night and it moved adb.exe. In its place it left a file called "adb_has_moved.txt" saying The adb tool has moved to platform-tools/ If you don't see this directory in your SDK, launch the SDK and AVD Manager (execute the android tool) and install "Android SDK Platform-tools" Please also update your PATH environment variable to include the platform-tools/ directory, so you can execute adb from any location. So I did all that, including the PATH and now I can start adb.exe from any DOS prompt. But I still can't start it from Eclipse (Galileo 3.52). When I try it says Location of the Android SDK has not been set up in the preferences ... which is not true. The SDK IS set up in Preferences. The real problem is at the top of the Preferences window where it says "Could not find C:\SDK\android-sdk-windows\ tools \adb.exe!" ...No kidding - the update moved it to C:\SDK\android-sdk-windows\ platform-tools. Because it's specifying a specific (wrong) path Eclipse is bypassing the PATH variable. So how do I get Eclipse to look in the right place?

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  • The instruction at "0x7c910a19" referenced memory at "oxffffffff". The memory could not be "read"

    - by ClareBear
    Hello guys/girls The instruction at "0x7c910a19" referenced memory at "oxffffffff". The memory could not be "read" I have a small issue, I receive the error above before the .vbs terminates. I don't know why this error is thrown. Below is the process of the .vbs file: Call ImportTransactions() Call UpdateTransactions() Function ImportTransactions() Dim objConnection, objCommand, objRecordset, strOracle Dim strSQL, objRecordsetInsert Set objConnection = CreateObject("ADODB.Connection") objConnection.Open "DSN=*****;UID=*****;PWD==*****;" Set objCommand = CreateObject("ADODB.Command") Set objRecordset = CreateObject("ADODB.Recordset") strOracle = "SELECT query here from Oracle database" objCommand.CommandText = strOracle objCommand.CommandType = 1 objCommand.CommandTimeout = 0 Set objCommand.ActiveConnection = objConnection objRecordset.cursorType = 0 objRecordset.cursorlocation = 3 objRecordset.Open objCommand, , 1, 3 If objRecordset.EOF = False Then Do Until objRecordset.EOF = True strSQL = "INSERT query here into SQL database" strSQL = Query(strSQL) Call RunSQL(strSQL, objRecordsetInsert, False, conTimeOut, conServer, conDatabase, conUsername, conPassword) objRecordset.MoveNext Loop End If objRecordset.Close() Set objRecordset = Nothing Set objRecordsetInsert = Nothing End Function Function UpdateTransactions() Dim strSQLUpdateVAT, strSQLUpdateCodes Dim objRecordsetVAT, objRecordsetUpdateCodes strSQLUpdateVAT = "UPDATE query here SET [value:costing output] = ([value:costing output] * -1)" Call RunSQL(strSQLUpdateVAT, objRecordsetVAT, False, conTimeOut, conServer, conDatabase, conUsername, conPassword) strSQLUpdateCodes = "UPDATE query here SET [value:costing output] = ([value:costing output] * -1) different WHERE clause" Call RunSQL(strSQLUpdateCodes, objRecordsetUpdateCodes, False, conTimeOut, conServer, conDatabase, conUsername, conPassword) Set objRecordsetVAT = Nothing Set objRecordsetUpdateCodes = Nothing End Function UDPATE: If I exit the function after I open the connection (see below) it still causes the same error. Function ImportTransactions() Dim objConnection, objCommand, objRecordset, strOracle Dim strSQL, objRecordsetInsert Set objConnection = CreateObject("ADODB.Connection") objConnection.Open "DSN=*****;UID=*****;PWD==*****;" Set objCommand = CreateObject("ADODB.Command") Set objRecordset = CreateObject("ADODB.Recordset") Exit Function End Function It does both the import and update and seems to throw this error after. Thanks in advance for any help, Clare

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  • Fastest way to modify a decimal-keyed table in MySQL?

    - by javanix
    I am dealing with a MySQL table here that is keyed in a somewhat unfortunate way. Instead of using an auto increment table as a key, it uses a column of decimals to preserve order (presumably so its not too difficult to insert new rows while preserving a primary key and order). Before I go through and redo this table to something more sane, I need to figure out how to rekey it without breaking everything. What I would like to do is something that takes a list of doubles (the current keys) and outputs a list of integers (which can be cast down to doubles for rekeying). For example, input {1.00, 2.00, 2.50, 2.60, 3.00} would give output {1, 2, 3, 4, 5). Since this is a database, I also need to be able to update the rows nicely: UPDATE table SET `key`='3.00' WHERE `key`='2.50'; Can anyone think of a speedy algorithm to do this? My current thought is to read all of the doubles into a vector, take the size of the vector, and output a new vector with values from 1 => doubleVector.size. This seems pretty slow, since you wouldn't want to read every value into the vector if, for instance, only the last n/100 elements needed to be modified. I think there is probably something I can do in place, since only values after the first non-integer double need to be modified, but I can't for the life of me figure anything out that would let me update in place as well. For instance, setting 2.60 to 3.00 the first time you see 2.50 in the original key list would result in an error, since the key value 3.00 is already used for the table.

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  • Calculate the year for ending month/day?

    - by Dave Jarvis
    Given: Start Year Start Month & Start Day End Month & End Day What SQL statement results in TRUE if a date lands between the Start and End days? 1st example: Start Date = 11-22 End Date = 01-17 Start Year = 2009 Specific Date = 2010-01-14 TRUE 2nd example: Start Date = 11-22 End Date = 11-16 Start Year = 2009 Specific Date = 2010-11-20 FALSE 3rd example: Start Date = 02-25 End Date = 03-19 Start Year = 2004 Specific Date = 2004-02-29 TRUE I was thinking of using the MySQL functions datediff and sign plus a CASE condition to determine whether the year wraps, but it seems rather expensive. Am looking for a simple, efficient calculation. Update 1 The problem is the end date cannot simply use the year. The year must be increased if the end month/day combination happens before the start date. The start date is easy: Start Date = date( concat_ws( '-', year, Start Month, Start Day ) ) The end date is not so simple. Update 2 Here is what I was thinking about for obtaining the end year: end_year = case sign( diff( date( concat_ws( year, start_month, start_day ) ), date( concat_ws( year, end_month, end_day ) ) ) ) when -1 then Start_Year + 1 else Start_Year end case Then wrap that expression (once syntactically correct) inside of another date, followed by BETWEEN statement. Update 3 To clear up some confusion: there is no end year. The end year must be calculated. Thank you!

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  • i want to search my database for example i want to search the word "google yahoo"

    - by user2926370
    i want to search my database for example i want to search the word "google yahoo" and when i enter that i should able to look the rows which has google and yahoo. It is not required to be in the same order and google besides yahoo. No matter wherever it is in the line and give me a simple logic to it. i can able to query that thing.something like select * from table where column like("%google%yahoo%"). I want to develop this thing in php but how can i insert %. Do i need to use if statement so that i can insert % in between the words whenever i find spaces orelse is there any other logic to do it simpler?

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  • LINQ2SQL DataLayer / Repository Suggestion

    - by MindlessProgrammer
    My current respository is as follows , please suggest , i am currently using LINQ2SQL Data context per insert/delele/update namespace Lib.Repository { public class MotorRenewalDataRepository { public MotorRenewalDataRepository() { } public MotorRenewalData GetByID(long id) { using(var _context=DatabaseFactory.Create(false)) { return _context.MotorRenewalDatas.Where(p => p.MotorRenewalDataID == id).FirstOrDefault(); } } public MotorRenewalData Insert(MotorRenewalData entity) { using (var _context = DatabaseFactory.Create(false)) { _context.MotorRenewalDatas.InsertOnSubmit(entity); _context.SubmitChanges(); return entity; } } public void Update(MotorRenewalData entity) { using (var _context = DatabaseFactory.Create(true)) { var dbEntity = _context.MotorRenewalDatas.Where(p => p.MotorRenewalDataID == entity.MotorRenewalDataID) .FirstOrDefault(); Common.CopyObject<MotorRenewalData>(entity, dbEntity); _context.SubmitChanges(); } } } }

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  • Can I interrupt javascript code and then continue on a keystroke?

    - by Brian Ramsay
    I am porting an old game from C to Javascript. I have run into an issue with display code where I would like to have the main game code call display methods without having to worry about how those status messages are displayed. In the original code, if the message is too long, the program just waits for the player to toggle through the messages with the spacebar and then continues. This doesn't work in javascript, because while I wait for an event, all of the other program code continues. I had thought to use a callback so that further code can execute when the player hits the designated key, but I can't see how that will be viable with a lot of calls to display.update(msg) scattered throughout the code. Can I architect things differently so the event-based, asynchronous model works, or is there some other solution that would allow me to implement a more traditional event loop? Am I making sense? Example: // this is what the original code does, but obviously doesn't work in Javascript display = { update : function(msg) { // if msg is too long // wait for user input // ok, we've got input, continue } }; // this is more javascript-y... display = { update : function(msg, when_finished) { // show part of the message $(document).addEvent('keydown', function(e) { // display the rest of the message when_finished(); }); } }; // but makes for amazingly nasty game code do_something(param, function() { // in case do_something calls display I have to // provide a callback for everything afterwards // this happens next, but what if do_the_next_thing needs to call display? // I have to wait again do_the_next_thing(param, function() { // now I have to do this again, ad infinitum } }

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  • Chrome Extension contenteditable get and set caret position

    - by jwize
    I am creating an extension where I need to insert a link into the gmail window. I am able to create a simple extension button in the top of the window and execute code that does replaces all the links. Now, I want to do add links in the contenteditable section as I type. It seems like there should be a simple way to replace text with a link in the document object model. If this is not true I need to do three things. Insert text from the current caret position Capture the caret position. Set the caret position by its offset. I have tried using window.getSelection within the gmail context(that is a body element that is set to contenteditable and embedded inside an iframe in the gmail tab) to get the current range and position. The selection is always empty and contains no ranges regardless of whether text is selected or not.

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  • Lucene.NET - Find documents that do not contain a specified field

    - by Brandon
    Let's say I have 2 instance of a class called 'Animal'. Animal has 3 fields: Name, Age, and Type The name field is nullable, so before I insert an instance of Animal as a Lucene indexed document, I check if Animal.Name == null, and if it does, I do not insert it as a field in my document. If I were to retrieve all animals, I would see that the Name field does not exist and I can set its value to null. However, there may be situations where I want to say "Get me all animals that do not have a name specified yet." In this situation I want to retrieve all Lucene.NET documents from my animal index that do not contain the Name field. Is there an easy way to do this with Lucene.NET? I want to stay away from having to perform some sort of hack to check if my name field has a value of 'null'.

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  • Struts Tiles application

    - by rav83
    Am trying a tiles application.Below is my code tiles-defs.xml </tiles-definitions> <definition name="${YOUR_DEFINITION_HERE}"> </definition> <definition name="commonPage" path="/jsps/template.jsp"> <put name="header" value="/jsps/header.jsp" /> <put name="menu" value="/jsps/menu.jsp" /> <put name="body" value="/jsps/homebody.jsp" /> <put name="footer" value="/jsps/footer.jsp" /> </definition> <definition name="aboutUsPage" extends="commonPage"> <put name="body" value="/jsps/aboutUsBody.jsp" /> </definition> </tiles-definitions> struts-config.xml <action path="/aboutus" type="java.com.mbest.core.action.AboutUsAction" parameter="method"> <forward name="success" path="aboutUsPage"/> <forward name="failure" path="aboutUsPage"/> </action> </action-mappings> template.jsp <%@ taglib uri="/WEB-INF/struts-tiles.tld" prefix="tiles" %> <html> <head><title></title></head> <body> <table border="1" cellspacing="0" cellpadding="0" style="width: 98%; height: 100%"> <tr> <td colspan="2"> <tiles:insert attribute="header"/> </td> </tr> <tr style="height: 500px"> <td valign="top" style="width: 200px"> <tiles:insert attribute="menu"/> </td> <td valign="baseline" align="left"> <tiles:insert attribute="body"/> </tr> <tr> <td colspan="2"> <tiles:insert attribute="footer"/> </td> </tr> </table> </body> </html> homebody.jsp <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %> <%@taglib uri="/WEB-INF/struts-html.tld" prefix="html"%> <%@taglib uri="/WEB-INF/struts-tiles.tld" prefix="tiles" %> <html> <head> <title></title> <style type="text/css"> <%@include file="../css/helper.css"%> <%@include file="../css/dropdown.css" %> <%@include file="../css/default.ultimate.css" %> </style> </head> <body> <div id="header"> <ul id="nav" class="dropdown dropdown-horizontal"> <li><span class="dir"><html:link page="/aboutus.do?method=aboutUsPage" >About Us</html:link></span></li> <li><span class="dir"><a href="./">Products</a></span></li> <li><span class="dir"><a href="./">Infrastructure</a></span></li> <li><span class="dir"><a href="./">Pharmaceutical Formulations</a></span></li> <li><span class="dir"><a href="./">Contact Us</a></span></li> </ul> </div> </body> </html> AboutUsAction.java package java.com.mindbest.core.action; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.actions.DispatchAction; public class AboutUsAction extends DispatchAction { public ActionForward aboutUsPage(ActionMapping mapping,ActionForm form, HttpServletRequest request,HttpServletResponse response)throws Exception { return mapping.findForward("success"); } } aboutUsBody.jsp hello In my above code if i try to access the app using (domainname)/example/aboutus.do its giving 500 error.Can anyone help me figure this out?

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  • ADO.NET Multiple simultaneous reads from an open database.

    - by Deverill
    Answer not needed - my logic was wrong and this question is invalid. Charles helped me see where I went off-tracks. Thanks I have a utility that moves data from one source to another. In the process of writing the record I check to see if it exists and do an update/insert as necessary. The difficulty I have is that as I'm writing the main record info there is a 2nd table for "custom data" that I have to check to see if it exists and do an update/insert for that as well. Example: I may be loading a pencil sharpener that may or may not exist. While I'm writing it into destination it has characteristics such as style, color, etc. and each of them may or may not exist. As written I seem to need to have 2 DataReaders open, one for the sharpener and one to check for and update color. I am new to ADO.NET, but not to programming and it's more complicated than I listed but for sanity's sake I didn't put all the details. My question is: What am I missing? You can't have 2 readers open at the same time on a connection, yet I can't close the first if I'm stepping through all products. It seems inefficient to have 2 connections, readers, etc. for this. Is there a feature of ADO.NET DBs that I'm missing? How would you do it? Thanks!

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