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  • click events issue in jquery.

    - by alex
    I don't know if the title explain this situation well. Below is a code i wrote to create div elements when the button is pressed. Then By clicking on any of the created divs, we can change the div background by choosing a color from the drop down box. However if i click on another div and tried to change the color by selecting another color from the drop down, the previously clicked divs also gets affected by the new color. Why is this happening. I only want the selected div to change color, without affecting the previously clicked divs. I read allot of threads on this site, some of which talks about unbinding clicks, but I'm unable to solve the problem. Thanks for the help. <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" type="text/javascript"></script> <style> .aaa { width:100px; height:100px;background-color:#ccc;margin-bottom:5px;} p{widht:500px; height:500px; margin:0px; padding:0px;border:2px solid red;color:#000;} </style> <select id="item_select" name="item"> <option value="1">red</option> <option value="2">blue</option> <option value="3">green</option> </select> <button>Click to create divs</button> <p id="ptest"></p> <script type="text/javascript"> var dividcount = 1; $("button").click(run); function run(){ var myDiv = $('<div id=lar'+dividcount+' class=aaa></div>'); $(myDiv).clone().appendTo('#ptest'); $(dividcount++); $("div").bind('click',(function() { var box = $("div").index(this); var idd = (this.id); $("#"+idd).text("div #"+idd); $("select").change(function(){ var str= $("select option:selected").text(); $("#"+idd).css("background-color",str); }); })); }; </script>

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  • djb2 Hash Function

    - by Jainish
    I am using the djb2 algorithm to generate the hash key for a string which is as follows hash(unsigned char *str) { unsigned long hash = 5381; int c; while (c = *str++) hash = ((hash << 5) + hash) + c; /* hash * 33 + c */ return hash; } Now with every loop there is a multiplication with two big numbers, After some time with the 4th of 5th character of the string there is a overflow as the hash value becomes huge What is the correct way to refactor so that the hash value does not overflow and the hashing also happens correctly

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  • pchart pie chart legend and graph not correlating

    - by madphp
    Hi, I have ten values in the dataset, numbers 1 - 10 and corresponding values. Some of the values are coming back as zero, so they are not added to the chart, BUT, the legend is still listing 1 - 10. Because theres values missing in the chart, the colour coding is knocked off. ie Item 1, has a value of zero, its passed over in the chart, the colour in the legend is red, Item 2, has a value of 4, the percentage is calculated, and the chart gives it the colour red which is the colour for item 1 in the legend. Hope that makes sense. How can I print the legend just for the values that are displayed in the chart? --Mark

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  • Python Ctypes Read/WriteProcessMemory() - Error 5/998 Help!

    - by user299805
    Please don't get scared but the following code, if you are familiar with ctypes or C it should be easy to read. I have been trying to get my ReadProcessMemory() and WriteProcessMemory() functions to be working for so long and have tried almost every possibility but the right one. It launches the target program, returns its PID and handle just fine. But I always get a error code of 5 - ERROR_ACCESS_DENIED. When I run the read function(forget the write for now). I am launching this program as what I believe to be a CHILD process with PROCESS_ALL_ACCESS or CREATE_PRESERVE_CODE_AUTHZ_LEVEL. I have also tried PROCESS_ALL_ACCESS and PROCESS_VM_READ when I open the handle. I can also say that it is a valid memory location because I can find it on the running program with CheatEngine. As for VirtualQuery() I get an error code of 998 - ERROR_NOACCESS which further confirms my suspicion of it being some security/privilege problem. Any help or ideas would be very appreciated, again, it's my whole program so far, don't let it scare you =P. from ctypes import * from ctypes.wintypes import BOOL import binascii BYTE = c_ubyte WORD = c_ushort DWORD = c_ulong LPBYTE = POINTER(c_ubyte) LPTSTR = POINTER(c_char) HANDLE = c_void_p PVOID = c_void_p LPVOID = c_void_p UNIT_PTR = c_ulong SIZE_T = c_ulong class STARTUPINFO(Structure): _fields_ = [("cb", DWORD), ("lpReserved", LPTSTR), ("lpDesktop", LPTSTR), ("lpTitle", LPTSTR), ("dwX", DWORD), ("dwY", DWORD), ("dwXSize", DWORD), ("dwYSize", DWORD), ("dwXCountChars", DWORD), ("dwYCountChars", DWORD), ("dwFillAttribute",DWORD), ("dwFlags", DWORD), ("wShowWindow", WORD), ("cbReserved2", WORD), ("lpReserved2", LPBYTE), ("hStdInput", HANDLE), ("hStdOutput", HANDLE), ("hStdError", HANDLE),] class PROCESS_INFORMATION(Structure): _fields_ = [("hProcess", HANDLE), ("hThread", HANDLE), ("dwProcessId", DWORD), ("dwThreadId", DWORD),] class MEMORY_BASIC_INFORMATION(Structure): _fields_ = [("BaseAddress", PVOID), ("AllocationBase", PVOID), ("AllocationProtect", DWORD), ("RegionSize", SIZE_T), ("State", DWORD), ("Protect", DWORD), ("Type", DWORD),] class SECURITY_ATTRIBUTES(Structure): _fields_ = [("Length", DWORD), ("SecDescriptor", LPVOID), ("InheritHandle", BOOL)] class Main(): def __init__(self): self.h_process = None self.pid = None def launch(self, path_to_exe): CREATE_NEW_CONSOLE = 0x00000010 CREATE_PRESERVE_CODE_AUTHZ_LEVEL = 0x02000000 startupinfo = STARTUPINFO() process_information = PROCESS_INFORMATION() security_attributes = SECURITY_ATTRIBUTES() startupinfo.dwFlags = 0x1 startupinfo.wShowWindow = 0x0 startupinfo.cb = sizeof(startupinfo) security_attributes.Length = sizeof(security_attributes) security_attributes.SecDescriptior = None security_attributes.InheritHandle = True if windll.kernel32.CreateProcessA(path_to_exe, None, byref(security_attributes), byref(security_attributes), True, CREATE_PRESERVE_CODE_AUTHZ_LEVEL, None, None, byref(startupinfo), byref(process_information)): self.pid = process_information.dwProcessId print "Success: CreateProcess - ", path_to_exe else: print "Failed: Create Process - Error code: ", windll.kernel32.GetLastError() def get_handle(self, pid): PROCESS_ALL_ACCESS = 0x001F0FFF PROCESS_VM_READ = 0x0010 self.h_process = windll.kernel32.OpenProcess(PROCESS_VM_READ, False, pid) if self.h_process: print "Success: Got Handle - PID:", self.pid else: print "Failed: Get Handle - Error code: ", windll.kernel32.GetLastError() windll.kernel32.SetLastError(10000) def read_memory(self, address): buffer = c_char_p("The data goes here") bufferSize = len(buffer.value) bytesRead = c_ulong(0) if windll.kernel32.ReadProcessMemory(self.h_process, address, buffer, bufferSize, byref(bytesRead)): print "Success: Read Memory - ", buffer.value else: print "Failed: Read Memory - Error Code: ", windll.kernel32.GetLastError() windll.kernel32.CloseHandle(self.h_process) windll.kernel32.SetLastError(10000) def write_memory(self, address, data): count = c_ulong(0) length = len(data) c_data = c_char_p(data[count.value:]) null = c_int(0) if not windll.kernel32.WriteProcessMemory(self.h_process, address, c_data, length, byref(count)): print "Failed: Write Memory - Error Code: ", windll.kernel32.GetLastError() windll.kernel32.SetLastError(10000) else: return False def virtual_query(self, address): basic_memory_info = MEMORY_BASIC_INFORMATION() windll.kernel32.SetLastError(10000) result = windll.kernel32.VirtualQuery(address, byref(basic_memory_info), byref(basic_memory_info)) if result: return True else: print "Failed: Virtual Query - Error Code: ", windll.kernel32.GetLastError() main = Main() address = None main.launch("C:\Program Files\ProgramFolder\Program.exe") main.get_handle(main.pid) #main.write_memory(address, "\x61") while 1: print '1 to enter an address' print '2 to virtual query address' print '3 to read address' choice = raw_input('Choice: ') if choice == '1': address = raw_input('Enter and address: ') if choice == '2': main.virtual_query(address) if choice == '3': main.read_memory(address) Thanks!

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  • Jqgrid search option not working and edit popups not closed after submit

    - by Sajith
    i have facing two problem in Jqgrid. Search option not working and there is not closed editpopups after submit. my code below <table id="jQGridpending" style="width:auto"> </table> <div id="jQGridpendingPager"> </div> <table id="searchpending"></table> <div id="filterpending"></div> jQuery("#jQGridpending").jqGrid({ url: '@Url.Action("DiscountRequest", "Admin")', datatype: "json", mtype: "POST", colNames: [ "Id", "ClientName", "BpName", "Pdt", "DiscountReq", "DiscountAllowed", "Status", ], colModel: [ { name: "Id", width: 100, key: true, formatter: "integer", sorttype: "integer", hidden: true }, { name: "ClientName", width: 150, sortable: true,search:true,stype:'text', editrules: { required: false } }, { name: "BpName", width: 200, sortable: true, editable: false, editrules: { required: false } }, { name: "Pdt", width: 150, sortable: true, editable: false, editrules: { required: false } }, { name: "DiscountReq", width: 150, sortable: false, editable: false, editrules: { required: false } }, { name: "DiscountAllowed", width: 200, sortable: true, editable: true, editrules: { required: true } }, { name: 'Status', index: 'Status', width: 200, sortable: false, editable: true, formatter: 'select', edittype: 'select', editoptions: { value: "pending:pending;approved:approved;rejected:rejected" } }, @* { name: "Status", width: 200, sortable: false, editable: true, editrules: { required: true, minValue: 1, }, edittype: "select", editoptions: { async: false, dataUrl: "@Url.Action("GetStatus", "Admin")", buildSelect: function (response) { var s = "<select>"; s += '<option value="0">--Select--</option><option value="pending">pending</option>'; return s + "</select>"; } } },*@ //{ name: "Status", width: 150, sortable: true, editable: true, editrules: { required: true } }, //{ name: "Created", width: 120, formatter: "date", formatoptions: { srcformat: "ISO8601Long", newformat: "n/j/Y g:i:s A" }, align: "center", sorttype: "date" }, ], loadtext: "Processing pending request data please wait...", rowNum: 10, gridview: true, autoencode: true, loadonce: true, height: "auto", rownumbers: true, prmNames: { id: "Id" }, rowList: [10, 20, 30], pager: '#jQGridpendingPager', sortname: 'id', sortorder: "asc", viewrecords: true, jqModal: true, caption: "Pending List", reloadAfterSubmit: true, editurl: '@Url.Action("UpdateDiscount", "Admin")', }); jQuery("#jQGridpending").jqGrid('navGrid', '#jQGridpendingPager', { search: true,recreateFilter: true, add: false, searchtext: "Search", edittext: "Edit", deltext: "Delete", }, {//EDIT url: '@Url.Action("UpdateDiscount", "Admin")', width: "auto", jqModal: true, closeOnEscape: true, closeAfterEdit: true, reloadAfterSubmit: true, afterSubmit: function () { // Reload grid records after edit a entry in the db. $(this).jqGrid('setGridParam', { datatype: 'json' }); return [true, '', false]; }, }, {//DELETE url: '@Url.Action("DelDiscount", "Admin")', closeOnEscape: true }, {//SEARCH closeOnEscape: true, searchOnEnter: true, multipleSearch: true, //overlay: 0, width: "auto", height: "auto", });

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  • PHP - Foreach in a foreach + CodeIgniter

    - by Sebhael
    I got an image upload function working, but there's 4 images required in this image. And my current function is simply just overwriting the image despite the number. I'm wondering how I would insert (preferably) a letter into my foreach function. $uploads = array($this->uploads->data()); foreach ( $uploads as $key[] => $value ) { $imagename = $cleaned . '-s' . $value['file_ext']; //outputs clean-name-s.ext } By the time all is said and done, 4 images will require this function. Leaving me with clean-name-sa.ext, clean-name-sb.ext, clean-name-sc.ext, and clean-name-sd.ext (numbers work as well). The form does require that all 4 fields are filled out before submission, so would I just create an array of my desired identifiers and create a foreach loop that outputs 4 different $imagenames? Or is there a simpler, more logical approach to this.

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  • Python performance: iteration and operations on nested lists

    - by J.J.
    Problem Hey folks. I'm looking for some advice on python performance. Some background on my problem: Given: A mesh of nodes of size (x,y) each with a value (0...255) starting at 0 A list of N input coordinates each at a specified location within the range (0...x, 0...y) Increment the value of the node at the input coordinate and the node's neighbors within range Z up to a maximum of 255. Neighbors beyond the mesh edge are ignored. (No wrapping) BASE CASE: A mesh of size 1024x1024 nodes, with 400 input coordinates and a range Z of 75 nodes. Processing should be O(x*y*Z*N). I expect x, y and Z to remain roughly around the values in the base case, but the number of input coordinates N could increase up to 100,000. My goal is to minimize processing time. Current results I have 2 current implementations: f1, f2 Running speed on my 2.26 GHz Intel Core 2 Duo with Python 2.6.1: f1: 2.9s f2: 1.8s f1 is the initial naive implementation: three nested for loops. f2 is replaces the inner for loop with a list comprehension. Code is included below for your perusal. Question How can I further reduce the processing time? I'd prefer sub-1.0s for the test parameters. Please, keep the recommendations to native Python. I know I can move to a third-party package such as numpy, but I'm trying to avoid any third party packages. Also, I've generated random input coordinates, and simplified the definition of the node value updates to keep our discussion simple. The specifics have to change slightly and are outside the scope of my question. thanks much! f1 is the initial naive implementation: three nested for loops. 2.9s def f1(x,y,n,z): rows = [] for i in range(x): rows.append([0 for i in xrange(y)]) for i in range(n): inputX, inputY = (int(x*random.random()), int(y*random.random())) topleft = (inputX - z, inputY - z) for i in xrange(max(0, topleft[0]), min(topleft[0]+(z*2), x)): for j in xrange(max(0, topleft[1]), min(topleft[1]+(z*2), y)): if rows[i][j] <= 255: rows[i][j] += 1 f2 is replaces the inner for loop with a list comprehension. 1.8s def f2(x,y,n,z): rows = [] for i in range(x): rows.append([0 for i in xrange(y)]) for i in range(n): inputX, inputY = (int(x*random.random()), int(y*random.random())) topleft = (inputX - z, inputY - z) for i in xrange(max(0, topleft[0]), min(topleft[0]+(z*2), x)): l = max(0, topleft[1]) r = min(topleft[1]+(z*2), y) rows[i][l:r] = [j+1 for j in rows[i][l:r] if j < 255]

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  • Default Database Collations got messed up

    - by dominicdinada
    I am using Ubuntu 9.10 with XAMPP ( Lampp "MYSQL 5.1.45 PHPMYADMIN 3.3.1 PHP 5.3.2 ) What my problem is, is that I set up my testing env to debug my scripts locally and when I did so there arose a problem. This problem is that I used firefox's addon SQLinject ME to test for weakness' and upon doing so it caused mysql to change the default local collations; character sets dir /opt/lampp/share/mysql/charsets/ collation connection latin1_general_ci (Global value) latin1_swedish_ci collation database latin1_swedish_ci collation server latin1_swedish_ci I have searched for quite sometime in regards to a solution to this problem and have come up with searching for the db.opt file which stores this information without success. Upon not finding a solution I removed lampp with the "sudo rm -fR /opt" command and reinstall and the problem still persists. I have tried to change the collations manually and still come up with the database displaying latin1_swedish_ci as the default language. Why is this a problem?? Why is it a problem with mysql? Because the application I am testing and debugging locally is built on the CodeIgnitor with Smarty framework and since this combination of framework is built to detect the LOCALES, Rather what the database defaults are I keep getting errors saying no language file for swedish...... Of course I could get the swedish language file to work around this problem but I do not feel the need to make this work around a perminant solution as with time when I move on to projects I will run into simular problems every time that A; When importing database files, backups etc it will default to import such databases as the locale swedish. B; As time passes on I might completly forget of this error and will be back to square one. I have found this code in searches for a fix,which seems to alter the tables to a desired Collaion; $value) { mysql_query("ALTER TABLE $value COLLATE latin1_general_ci"); }} echo "The collation of your database has been successfully changed!"; ? Which is handy to switch collations in One Schema at a time however this is not a fix when a framework doesnt care that the said database is in one langugae. It tests for the Default of the entire server. Someone with any knowledge of a purge or fix to this I would greatly appricate the help. One more final note is that when I was testing I only figured to back up the applications DataBase and not the entire Schema of the install. No matter if I uninstall or reinstall the database still seems to carry these problems.

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  • Render html code in sql server client report (rdlc)

    - by masoud ramezani
    I am using the asp.net web application and microsoft visual studio reportviewer control and rdlc for creating a report ( not using sql server reporting). I used the Product table to view the result. It has five fields and I display all the itemsin the report. One field is Description and it store the html code as the value(eg: <div><ul><li>a</li><li>b</li></ul><b>aaaa</b></div> ). I want to disply the output of this html code in my report's description field. But in my report, it shows the html value that I stored in my table (: <div><ul><li>a</li><li>b</li></ul><b>aaaa</b></div> ). How can I render the html in my report. Please give me a solution.

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  • Cross domain AJAX requests using YQL

    - by nav
    Hi , I need to query a locations WOEID and grab the WOEID value from the xml returned. So the user would type e.g. London, UK and I need to load the query as below: http://query.yahooapis.com/v1/public/yql?q=select%20woeid%20from%20geo.places%20where%20text%20%3D%20%22London%2C%20UK%2C%20UK%22&format=xml After which I need to grab the WOEID value from the XML content returned. I know this can be done when HTML content is returned as this link shows - http://ajaxian.com/archives/using-yql-as-a-proxy-for-cross-domain-ajax Is there a way to use similar code to query the XML data returned? Thanks alot

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  • Quick, beginner MASM register question - DX:AX

    - by Francisco P.
    Hello, I am currently studying for an exam I'll have on x86 assembly. I didn't have much luck googling for ":", too common of a punctuation mark :/ IDIV - Signed Integer Division Usage: IDIV src Modifies flags: (AF,CF,OF,PF,SF,ZF undefined) Signed binary division of accumulator by source. If source is a byte value, AX is divided by "src" and the quotient is stored in AL and the remainder in AH. If source is a word value, DX:AX is divided by "src", and the quotient is stored in AL and the remainder in DX. Taken from "Intel Opcodes and Mnemonics" What does DX:AX mean? Thanks a lot for your time :)

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  • ActiveReports Conditional Formatting - Picture Visibility

    - by Joe
    In ActiveReports, how can I change formatting based on values in the report data? Specifically, I want to show or hide pictures based on a value in the data. The report gets bound to a list of objects via a set to its DataSource property. These objects have a Condition property with values "Poor", "Normal", etc. I have some pictures in the report that correspond to the different conditions, and I want to hide all the pictures except for the one corresponding to the value. Should I subscribe to the Format event for the detail section? If so, how do I get to the "current record" data?

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  • CUDA: accumulate data into a large histogram of floats

    - by shoosh
    I'm trying to think of a way to implement the following algorithm using CUDA: Working on a large volume of voxels, for each voxel I calculate an index i and a value c. after the calculation I need to perform histogram[i] += c c is a float value and the histogram can have up to 15,000 bins. I'm looking for a way to implement this efficiently using CUDA. The first obvious problem is that with compute capabilities 1.3 which is what I'm using I can't even do an atomicAdd() of floats so how can I accumulate anything reliably? This example by nVidia does something somewhat simpler. The histograms are saved in the shared memory (which I can't do due to its size) and it only accumulates integers. Can this approach be generalized to my case?

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  • Javascript event chaining / binding

    - by Charlie Brown
    I have a select list which has a function with a jQuery .post bound on the change() event. <select id="location"> <option value="1"></option> <option value="2"></option> </select> $('#location').change(location_change); function location_change(){ var url = ''; $.post(url, callback); } What I would like to happen is other controls on the page can bind to the $.post callback function like it was an event, so after the location is changed the data is posted back to the server and once the post returns successfully, the subscriber events are fired.

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  • dynamically getting base url inside js file

    - by uzay95
    I eant to run function inside web service (.asmx file) $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: '/Admin/WebSrvcs/Management.asmx/f_SearchLabel', data: "{_sQuery:'" + obj.value + "'}", dataType: "json", But I don't know where will be my root url(http://localhost:4399/VirDir or something else it may be) address inside js file. And i need to reach root folder of application to find asmx file. $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: 'http://localhost:4399/virDir/Admin/WebSrvcs/Management.asmx/f_SearchLabel', data: "{_sQuery:'" + obj.value + "'}", dataType: "json", I am working on Visual Studio 2008 and building web site with C#. any help would be greatly appreciated

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  • TCL array values updation based on command line argument

    - by Raj
    Hi, I am trying to substitute variable value inside array so as to update array values based on command line inputs. e.g. I am receiving IP address as command line argument for my TCL script and trying to update commands with recvd IP value. My array is: array set myArr { 1 myCmd1("192.268.2.1","abc.txt") 2 myCmd2("192.268.2.1","xyz.txt") 3 myCmd3("192.268.2.1","klm.txt") } Here, "192.268.2.1" will actually be supplied as command line argument. I tried doing array set myArr { 1 myCmd1($myIP,"abc.txt") 2 myCmd2($myIP,"xyz.txt") 3 myCmd3($myIP,"klm.txt") } and other combinations like ${myIP}, {[set $myIP]} but none is working. Thanks in advance for any help/inputs.

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  • trying to pass file name from aspx page to console.exe

    - by ryder1211212
    i want to pass the value of a lable or textbox in an aspx page to a console.exe application such that the if the value is sample.doc it changes to that. i am calling from the aspx page with string f = TextBox1.Text; System.Diagnostics.Process.Start("C:/DocUpload/ConsoleApplication1.exe", f); i have tried converting to string then using the string vatiable inplace of sample.doc but no luck object FileName = System.IO.Path.Combine(ExecutableFileInfo.DirectoryName, "sample.doc"); any help or ideas will be welcomed. thank u

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  • Coldfusion 8: Array of structs to struct of structs

    - by davidosomething
    I've got an array items[] Each item in items[] is a struct. item has keys id, date, value (i.e., item.id, item.date, item.value) I want to use StructSort to sort the item collection by a date Is this the best way to do it in ColdFusion 8: <cfset allStructs = StructNew()> <cfloop array = #items# index = "item"> <cfset allStructs[item.id] = item> <cfset unixtime = DateDiff("s", CreateDate(1970,1,1), item.date)> <cfset allStructs[item.id].unixtime = unixtime> </cfloop> <cfset allStructs = StructSort(allStructs, "numeric", "desc", "unixtime")> It's going to be dreadfully slow

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  • Improving Performance of RDP Over LAN

    - by Jared Brown
    Architecture: A deployment of 6 new HP thin clients (Windows XP Embedded) with TCP/IP access to several new HP servers (Windows 2003 Server). Each thin client is connected over fiber optic to a Gigabit Cisco switch, which the servers are connected to. There are 10/100 Ethernet to fiber converter boxes on each end of the fiber cables. Problem: Noticeable lag over RDP while using the Unigraphics CAD package. 3D models take .5 to 1 second to respond to mouse actions. Other Details: Network throughput on each thin client's RDP session is 7288 kbps. RDP connection settings - color setting: 15k, all themes, etc. turned off. Local and remote system performance stats are well within norms (CPU, Memory, and Network). Question: Are there newer versions of terminal services or RDP I can use on my existing OSes? Are there compression algorithms, etc. that are well suited for a high-bandwidth LAN? Are there valid alternatives that will yield higher performance (i.e. UltraVNC with drivers installed)? Are there TCP/IP tuning options I can exploit?

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  • Opinions on sensor / reading / alert database design

    - by Mark
    I've asked a few questions lately regarding database design, probably too many ;-) However I beleive I'm slowly getting to the heart of the matter with my design and am slowly boiling it down. I'm still wrestling with a couple of decisions regarding how "alerts" are stored in the database. In this system, an alert is an entity that must be acknowledged, acted upon, etc. Initially I related readings to alerts like this (very cut down) : - [Location] LocationId [Sensor] SensorId LocationId UpperLimitValue LowerLimitValue [SensorReading] SensorReadingId Value Status Timestamp [SensorAlert] SensorAlertId [SensorAlertReading] SensorAlertId SensorReadingId The last table is associating readings with the alert, because it is the reading that dictate that the sensor is in alert or not. The problem with this design is that it allows readings from many sensors to be associated with a single alert - whereas each alert is for a single sensor only and should only have readings for that sensor associated with it (should I be bothered that the DB allows this though?). I thought to simplify things, why even bother with the SensorAlertReading table? Instead I could do this: [Location] LocationId [Sensor] SensorId LocationId [SensorReading] SensorReadingId SensorId Value Status Timestamp [SensorAlert] SensorAlertId SensorId Timestamp [SensorAlertEnd] SensorAlertId Timestamp Basically I'm not associating readings with the alert now - instead I just know that an alert was active between a start and end time for a particular sensor, and if I want to look up the readings for that alert I can do. Obviously the downside is I no longer have any constraint stopping me deleting readings that occurred during the alert, but I'm not sure that the constraint is neccessary. Now looking in from the outside as a developer / DBA, would that make you want to be sick or does it seem reasonable? Is there perhaps another way of doing this that I may be missing? Thanks. EDIT: Here's another idea - it works in a different way. It stores each sensor state change, going from normal to alert in a table, and then readings are simply associated with a particular state. This seems to solve all the problems - what d'ya think? (the only thing I'm not sure about is calling the table "SensorState", I can't help think there's a better name (maybe SensorReadingGroup?) : - [Location] LocationId [Sensor] SensorId LocationId [SensorState] SensorStateId SensorId Timestamp Status IsInAlert [SensorReading] SensorReadingId SensorStateId Value Timestamp There must be an elegant solution to this!

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  • Can I programatically get hold of the Autos/local variables that is shown when debugging?

    - by Stefan
    Im trying to build an error-logger that loggs running values that is active in the function that caused the error. (just for fun so its not a critical problem) When going in break-mode and looking at the locals-tab and autos-tab you can see all active variables (name, type and value), it would be useful to get hold of that for logging purposes when an error occur and on some other occasions. For my example, I just want to find all local variables that are of type string and integer and store the name and value of them. Is this possible with reflection? Any tips or pointers that get me closer to my goal would be very appreciated. I have toyed with using expression on a specifik object (a structure) to create an automapper against a dataset, but I have not done anything like what I ask for above, so please make me happy and say its possible. Thanks.

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  • Deletes not cascading for self-referencing entities

    - by jwaddell
    I have the following (simplified) Hibernate entities: @Entity @Table(name = "package") public class Package { protected Content content; @OneToOne(cascade = {javax.persistence.CascadeType.ALL}) @JoinColumn(name = "content_id") @Fetch(value = FetchMode.JOIN) public Content getContent() { return content; } public void setContent(Content content) { this.content = content; } } @Entity @Table(name = "content") public class Content { private Set<Content> subContents = new HashSet<Content>(); private ArchivalInformationPackage parentPackage; @OneToMany(fetch = FetchType.EAGER) @JoinTable(name = "subcontents", joinColumns = {@JoinColumn(name = "content_id")}, inverseJoinColumns = {@JoinColumn(name = "elt")}) @Cascade(value = {org.hibernate.annotations.CascadeType.DELETE, org.hibernate.annotations.CascadeType.REPLICATE}) @Fetch(value = FetchMode.SUBSELECT) public Set<Content> getSubContents() { return subContents; } public void setSubContents(Set<Content> subContents) { this.subContents = subContents; } @ManyToOne(cascade = {CascadeType.ALL}) @JoinColumn(name = "parent_package_id") public Package getParentPackage() { return parentPackage; } public void setParentPackage(Package parentPackage) { this.parentPackage = parentPackage; } } So there is one Package, which has one "top" Content. The top Content links back to the Package, with cascade set to ALL. The top Content may have many "sub" Contents, and each sub-Content may have many sub-Contents of its own. Each sub-Content has a parent Package, which may or may not be the same Package as the top Content (ie a many-to-one relationship for Content to Package). The relationships are required to be ManyToOne (Package to Content) and ManyToMany (Content to sub-Contents) but for the case I am currently testing each sub-Content only relates to one Package or Content. The problem is that when I delete a Package and flush the session, I get a Hibernate error stating that I'm violating a foreign key constraint on table subcontents, with a particular content_id still referenced from table subcontents. I've tried specifically (recursively) deleting the Contents before deleting the Package but I get the same error. Is there a reason why this entity tree is not being deleted properly? EDIT: After reading answers/comments I realised that a Content cannot have multiple Packages, and a sub-Content cannot have multiple parent-Contents, so I have modified the annotations from ManyToOne and ManyToMany to OneToOne and OneToMany. Unfortunately that did not fix the problem. I have also added the bi-directional link from Content back to the parent Package which I left out of the simplified code.

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  • How to do early binding for event handler in JavaScript? (example with jQuery)

    - by Sven Larson
    JavaScript's late binding is great. But how do I early bind when I want to? I am using jQuery to add links with event handlers in a loop to a div. The variable 'aTag ' changes in the loop. When I click the links later, all links alert the same message, which is the last value of 'aTag'. How do I bind a different alert message to all links? All links should alert with the value that aTag had when the event handler was added, not when it was clicked. for (aTag in tagList) { if (tagList.hasOwnProperty(aTag)) { nextTag = $('<a href="#"></a>'); nextTag.text(aTag); nextTag.click(function() { alert(aTag); }); $('#mydiv').append(nextTag); $('#mydiv').append(' '); } }

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  • image focus calculation

    - by Oren Mazor
    Hi folks, I'm trying to develop an image focusing algorithm for some test automation work. I've chosen to use AForge.net, since it seems like a nice mature .net friendly system. Unfortunately, I can't seem to find information on building autofocus algorithms from scratch, so I've given it my best try: take image. apply sobel edge detection filter, which generates a greyscale edge outline. generate a histogram and save the standard dev. move camera one step closer to subject and take another picture. if the standard dev is smaller than previous one, we're getting more in focus. otherwise, we've past the optimal distance to be taking pictures. is there a better way? update: HUGE flaw in this, by the way. as I get past the optimal focus point, my "image in focus" value continues growing. you'd expect a parabolic-ish function looking at distance/focus-value, but in reality you get something that's more logarithmic

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