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  • UnboundLocalError: local variable 'rows' referenced before assignment

    - by patrick
    i'm trying to make a database connection by an other script. But the script didn't work propperly. and if I do a 'print' on the rows then I get the value 'null' But if I use a 'select * from incidents' query then i get the result from the table incidents. import database rows = database.database("INSERT INTO incidents VALUES(3 ,'test_title1', 'test', TO_DATE('25-07-2012', 'DD-MM-YYYY'), CURRENT_TIMESTAMP, 'sector', 50, 60)") #print database.database() print rows database.py script: import psycopg2 import sys import logfile def database(query): logfile.log(20, 'database.py', 'Executing...') con = None try: con = psycopg2.connect(database='incidents', user='ipfit5', password='tester') cur = con.cursor() #print query cur.execute(query) rows = cur.fetchall() con.commit() #test row does work #cur.execute("INSERT INTO incidents VALUES(3 ,'test_titel1', 'test', TO_DATE('25-07-2012', 'DD-MM-YYYY'), CURRENT_TIMESTAMP, 'sector', 50, 60)") except: logfile.log(40, 'database.py', 'Er is iets mis gegaan') logfile.log(40, 'database.py', str(sys.exc_info())) finally: if con: con.close() return rows

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  • Java Compare Two Lists

    - by agazerboy
    Hi All, Thanks for stoping to help me :) I have a question, may be for some of you, it will be a basic question :) I have two lists ( not java lists, you can say two columns) For example **List 1** **Lists 2** milan hafil dingo iga elpha binga hafil mike meat dingo iga neeta.peeta What I want ! I want that it returns me that how many elements are same. For this example it should be 3 and it should return me similar values of both list and different values too. Should I use hashmap if yes then what method to get my result? Please help P.S: It is not a school assignment :) So if you just guide me it will be enough

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  • System.Data.SQLite parameter issue

    - by CasperT
    I have the following code: try { //Create connection SQLiteConnection conn = DBConnection.OpenDB(); //Verify user input, normally you give dbType a size, but Text is an exception var uNavnParam = new SQLiteParameter("@uNavnParam", SqlDbType.Text) { Value = uNavn }; var bNavnParam = new SQLiteParameter("@bNavnParam", SqlDbType.Text) { Value = bNavn }; var passwdParam = new SQLiteParameter("@passwdParam", SqlDbType.Text) {Value = passwd}; var pc_idParam = new SQLiteParameter("@pc_idParam", SqlDbType.TinyInt) { Value = pc_id }; var noterParam = new SQLiteParameter("@noterParam", SqlDbType.Text) { Value = noter }; var licens_idParam = new SQLiteParameter("@licens_idParam", SqlDbType.TinyInt) { Value = licens_id }; var insertSQL = new SQLiteCommand("INSERT INTO Brugere (navn, brugernavn, password, pc_id, noter, licens_id)" + "VALUES ('@uNameParam', '@bNavnParam', '@passwdParam', '@pc_idParam', '@noterParam', '@licens_idParam')", conn); insertSQL.Parameters.Add(uNavnParam); //replace paramenter with verified userinput insertSQL.Parameters.Add(bNavnParam); insertSQL.Parameters.Add(passwdParam); insertSQL.Parameters.Add(pc_idParam); insertSQL.Parameters.Add(noterParam); insertSQL.Parameters.Add(licens_idParam); insertSQL.ExecuteNonQuery(); //Execute query //Close connection DBConnection.CloseDB(conn); //Let the user know that it was changed succesfully this.Text = "Succes! Changed!"; } catch(SQLiteException e) { //Catch error MessageBox.Show(e.ToString(), "ALARM"); } It executes perfectly, but when I view my "brugere" table, it has inserted the values: '@uNameParam', '@bNavnParam', '@passwdParam', '@pc_idParam', '@noterParam', '@licens_idParam' literally. Instead of replacing them. I have tried making a breakpoint and checked the parameters, they do have the correct assigned values. So that is not the issue either. I have been tinkering with this a lot now, with no luck, can anyone help? Oh and for reference, here is the OpenDB method from the DBConnection class: public static SQLiteConnection OpenDB() { try { //Gets connectionstring from app.config const string myConnectString = "data source=data;"; var conn = new SQLiteConnection(myConnectString); conn.Open(); return conn; } catch (SQLiteException e) { MessageBox.Show(e.ToString(), "ALARM"); return null; } }

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  • delta-dictionary/dictionary with revision awareness in python?

    - by shabbychef
    I am looking to create a dictionary with 'roll-back' capabilities in python. The dictionary would start with a revision number of 0, and the revision would be bumped up only by explicit method call. I do not need to delete keys, only add and update key,value pairs, and then roll back. I will never need to 'roll forward', that is, when rolling the dictionary back, all the newer revisions can be discarded, and I can start re-reving up again. thus I want behaviour like: >>> rr = rev_dictionary() >>> rr.rev 0 >>> rr["a"] = 17 >>> rr[('b',23)] = 'foo' >>> rr["a"] 17 >>> rr.rev 0 >>> rr.roll_rev() >>> rr.rev 1 >>> rr["a"] 17 >>> rr["a"] = 0 >>> rr["a"] 0 >>> rr[('b',23)] 'foo' >>> rr.roll_to(0) >>> rr.rev 0 >>> rr["a"] 17 >>> rr.roll_to(1) Exception ... Just to be clear, the state associated with a revision is the state of the dictionary just prior to the roll_rev() method call. thus if I can alter the value associated with a key several times 'within' a revision, and only have the last one remembered. I would like a fairly memory-efficient implementation of this: the memory usage should be proportional to the deltas. Thus simply having a list of copies of the dictionary will not scale for my problem. One should assume the keys are in the tens of thousands, and the revisions are in the hundreds of thousands. We can assume the values are immutable, but need not be numeric. For the case where the values are e.g. integers, there is a fairly straightforward implementation (have a list of dictionaries of the numerical delta from revision to revision). I am not sure how to turn this into the general form. Maybe bootstrap the integer version and add on an array of values? all help appreciated.

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  • (Fluent)NHibernate: Mapping an IDictionary<MappedClass, MyEnum>

    - by anthony
    I've found a number of posts about this but none seem to help me directly. Also there seems to be confusion about solutions working or not working during different stages of FluentNHibernate's development. I have the following classes: public class MappedClass { ... } public enum MyEnum { One, Two } public class Foo { ... public virtual IDictionary<MappedClass, MyEnum> Values { get; set; } } My questions are: Will I need a separate (third) table of MyEnum? How can I map the MyEnum type? Should I? What should Foo's mapping look like? I've tried mapping HasMany(x = x.Values).AsMap("MappedClass")... This results in: NHibernate.MappingException : Association references unmapped class: MyEnum

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  • SQL WHERE clause not returning rows when field has NULL value

    - by JohnB
    Ok, so I'm aware of this issue: When SET ANSI_NULLS is ON, all comparisons against a null value evaluate to UNKNOWN SQL And NULL Values in where clause SQL Server return Rows that are not equal < to a value and NULL However, I am trying to query a DataTable. I could add to my query: OR col_1 IS NULL OR col_2 IS NULL for every column, but my table has 47 columns, and I'm building dynamic SQL (string concatenation), and it just seems like a pain to do that. Is there another solution? I was to bring back all the rows that have NULL values in the WHERE comparison. UPDATE Example of query that gave me problems: string query = col_1 not in ('Dorothy', 'Blanche') and col_2 not in ('Zborna', 'Devereaux') grid.DataContext = dataTable.Select(query).CopyToDataTable(); (didn't retrieve rows if/when col_1 = null and/or col_2 = null)

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  • iphone compass tilt compensation

    - by m01d
    hi, has anybody already programmed a iphone compass heading tilt compensation? i have got some approaches, but some help or a better solution would be cool! FIRST i define a vector Ev, calculated out of the cross product of Gv and Hv. Gv is a gravity vector i build out of the accelerometer values and Hv is an heading vector built out the magnetometer values. Ev stands perpendicular on Gv and Hv, so it is heading to horizonatl East. SECOND i define a vector Rv, calculated out of the cross product Bv and Gv. Bv is my looking vector and it is defined as [0,0,-1]. Rv is perpendicular to Gv and Bv and shows always to the right. THIRD the angle between these two vectors, Ev and Rv, should be my corrected heading. to calculate the angle i build the dot product and thereof the arcos. phi = arcos ( Ev * Rv / |Ev| * |Rv| ) Theoretically it should work, but maybe i have to normalize the vectors?! Has anybody got a solution for this? Thanks, m01d

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  • Asp.NET MVC ActionFilter cannot get Form Submit data

    - by Goden
    I want to use custom action filter to manipulate parameters to one action. User inputs: 2 names in a form ; Action: actually needs to take 2 ids; Action Filter (onExecuting, will verify the input names and if valid, convert them into 2 ids and replace in the routedata) because i don't want to put validation logic in Action Controller. here's part of the code: Routing Info routes.MapRoute( "Default", // Route name "{controller}/{action}", // URL with parameters new { controller = "Home", action = "Index"} // Parameter defaults ); routes.MapRoute( "RelationshipResults", // Route Name "Relationship/{initPersonID}/{targetPersonID}", // URL with parameters new { controller = "Relationship", action = "Results" }); Form to submit (Create 2 input box and submit via jquery) <% using (Html.BeginForm("Results", "Relationship", FormMethod.Post, new { id = "formSearch" })) {% ... <td align="left"><%: MvcWeibookWeb.Properties.Resource.Home_InitPersonName%></td> <td align="right"> <%= Html.TextBox("initPersonName")%></td> <td rowspan="3" valign="top"> <div id="sinaIntro"> <%: MvcWeibookWeb.Properties.Resource.Home_SinaIntro %> <br /> <%: MvcWeibookWeb.Properties.Resource.Genearl_PromotionSina %> </div> </td> </tr> <tr> <td align="left" width="90px"><%: MvcWeibookWeb.Properties.Resource.Home_TargetPersonName%></td> <td align="right"><%= Html.TextBox("targetPersonName")%></td> </tr> <tr> <td colspan="2" align="right"> <a href="#" class="btn-HomeSearch" onclick="$('#formSearch').submit();"><%: MvcWeibookWeb.Properties.Resource.Home_Search%></a> </td> Action Filter public override void OnActionExecuting(ActionExecutingContext filterContext) { Sina.Searcher searcher = new Sina.Searcher(Sina.Processor.UserNetwork); String initPersonName, targetPersonName; // form submit names, we need to process them and convert them to IDs before it enters the real controller. initPersonName = filterContext.RouteData.Values["initPersonName"] as String; targetPersonName = filterContext.RouteData.Values["targetPersonName"] as String; // do sth to convert it to ids and replace Action/Controller [ValidationActionFilter] [HandleError] public ActionResult Results( Int64 initPersonName, Int64 targetPersonName) { ... My problem is: in the actionFilter, it never gets the 2 parameter "initPersonName" and "targetPersonName", the RouteData.Values don't contain these 2 keys... :(

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  • Calling oracle stored procedure from Excel - VBA

    - by Ram
    I have to execute an Oracle stored procedure from vba (Excel) with around 38 input parameters. The stored procedure will insert some values in the destination table once that is executed. When it is executed through VBA the number of fields which is inserted is less than when it is executed directly from the backend (oracle). For example it is creating around 17 fields of records while executing directly from the back end. (I have created a wrapper class in the back-end and passing the same parameter values in the back-end.). It is creating around 15 fields of records while executing from the excel VBA in the destination table. Kindly let me know what could be the possible reasons for this.

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  • Convert SQLITE SQL dump file to POSTGRESQL

    - by DevX
    I've been doing development using SQLITE database with production in POSTGRESQL. I just updated my local database with a huge amount of data and need to transfer a specific table to the production database. SQLITE outputs a table dump in the following format: BEGIN TRANSACTION; CREATE TABLE "courses_school" ("id" integer PRIMARY KEY, "department_count" integer NOT NULL DEFAULT 0, "the_id" integer UNIQUE, "school_name" varchar(150), "slug" varchar(50)); INSERT INTO "courses_school" VALUES(1,168,213,'TEST Name A',NULL); INSERT INTO "courses_school" VALUES(2,0,656,'TEST Name B',NULL); .... COMMIT; How do I convert the above into a POSTGRESQL compatible dump file that I can import into my production server?

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  • Get Column Header in GridViewRow in asp.net

    - by Suryakavitha
    Hi, I am using a website and i have a gridview in that website.... I want to delete a row in that gridview by using that selected row column values and Column headers... i got the column values by using GridViewRow but i cant get that column value's Corresponding Column header.... how shall i get that Column header by using GridViewRow.... Please anyOne Tell me the solution of this.... Thanks in Advance! And My code is: int Row = Convert.ToInt16(e.RowIndex); GridViewRow Collection = GrdViewDetails.Rows[Row]; for (int i = 0; i < Collection.Cells.Count;i++) { strColumnValue = Collection.Cells[i].Text; //strColumnName=? }

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  • Why does SQL 2005 SSIS component install fail?

    - by Ducain
    I am trying to install SSIS on our production SQL 2005 SP2 box. Each time I try, the install/setup screen results in failure, starting with the native client, and moving on down. Screen shots below show what I see: Here is the result of clicking on the status link to the right of the native client after the install failed: === Verbose logging started: 3/28/2012 16:38:08 Build type: SHIP UNICODE 3.01.4000.4042 Calling process: C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\setup.exe === MSI (c) (DC:00) [16:38:08:875]: Resetting cached policy values MSI (c) (DC:00) [16:38:08:875]: Machine policy value 'Debug' is 0 MSI (c) (DC:00) [16:38:08:875]: ******* RunEngine: ******* Product: {F9B3DD02-B0B3-42E9-8650-030DFF0D133D} ******* Action: ******* CommandLine: ********** MSI (c) (DC:00) [16:38:08:875]: Client-side and UI is none or basic: Running entire install on the server. MSI (c) (DC:00) [16:38:08:875]: Grabbed execution mutex. MSI (c) (DC:00) [16:38:08:875]: Cloaking enabled. MSI (c) (DC:00) [16:38:08:875]: Attempting to enable all disabled priveleges before calling Install on Server MSI (c) (DC:00) [16:38:08:875]: Incrementing counter to disable shutdown. Counter after increment: 0 MSI (s) (90:F0) [16:38:08:875]: Grabbed execution mutex. MSI (s) (90:D4) [16:38:08:875]: Resetting cached policy values MSI (s) (90:D4) [16:38:08:875]: Machine policy value 'Debug' is 0 MSI (s) (90:D4) [16:38:08:875]: ******* RunEngine: ******* Product: {F9B3DD02-B0B3-42E9-8650-030DFF0D133D} ******* Action: ******* CommandLine: ********** MSI (s) (90:D4) [16:38:08:875]: Machine policy value 'DisableUserInstalls' is 0 MSI (s) (90:D4) [16:38:08:890]: Warning: Local cached package 'C:\WINDOWS\Installer\65eb99.msi' is missing. MSI (s) (90:D4) [16:38:08:890]: User policy value 'SearchOrder' is 'nmu' MSI (s) (90:D4) [16:38:08:890]: User policy value 'DisableMedia' is 0 MSI (s) (90:D4) [16:38:08:890]: Machine policy value 'AllowLockdownMedia' is 0 MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Media enabled only if package is safe. MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Looking for sourcelist for product {F9B3DD02-B0B3-42E9-8650-030DFF0D133D} MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Adding {F9B3DD02-B0B3-42E9-8650-030DFF0D133D}; to potential sourcelist list (pcode;disk;relpath). MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Now checking product {F9B3DD02-B0B3-42E9-8650-030DFF0D133D} MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Media is enabled for product. MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Attempting to use LastUsedSource from source list. MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Trying source C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\Cache\. MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Source is invalid due to invalid package code (product code doesn't match). MSI (s) (90:D4) [16:38:08:890]: Note: 1: 1706 2: -2147483646 3: sqlncli.msi MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Processing net source list. MSI (s) (90:D4) [16:38:08:890]: Note: 1: 1706 2: -2147483647 3: sqlncli.msi MSI (s) (90:D4) [16:38:08:890]: SOURCEMGMT: Processing media source list. MSI (s) (90:D4) [16:38:09:921]: SOURCEMGMT: Trying media source F:\. MSI (s) (90:D4) [16:38:09:921]: Note: 1: 2203 2: F:\sqlncli.msi 3: -2147287038 MSI (s) (90:D4) [16:38:09:921]: SOURCEMGMT: Source is invalid due to missing/inaccessible package. MSI (s) (90:D4) [16:38:09:921]: Note: 1: 1706 2: -2147483647 3: sqlncli.msi MSI (s) (90:D4) [16:38:09:921]: SOURCEMGMT: Processing URL source list. MSI (s) (90:D4) [16:38:09:921]: Note: 1: 1402 2: UNKNOWN\URL 3: 2 MSI (s) (90:D4) [16:38:09:921]: Note: 1: 1706 2: -2147483647 3: sqlncli.msi MSI (s) (90:D4) [16:38:09:921]: Note: 1: 1706 2: 3: sqlncli.msi MSI (s) (90:D4) [16:38:09:921]: SOURCEMGMT: Failed to resolve source MSI (s) (90:D4) [16:38:09:921]: MainEngineThread is returning 1612 MSI (c) (DC:00) [16:38:09:921]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1 MSI (c) (DC:00) [16:38:09:921]: MainEngineThread is returning 1612 === Verbose logging stopped: 3/28/2012 16:38:09 === Here is the log visible when I click the failed status for MSXML6: === Verbose logging started: 3/28/2012 16:38:12 Build type: SHIP UNICODE 3.01.4000.4042 Calling process: C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\setup.exe === MSI (c) (DC:58) [16:38:12:250]: Resetting cached policy values MSI (c) (DC:58) [16:38:12:250]: Machine policy value 'Debug' is 0 MSI (c) (DC:58) [16:38:12:250]: ******* RunEngine: ******* Product: {56EA8BC0-3751-4B93-BC9D-6651CC36E5AA} ******* Action: ******* CommandLine: ********** MSI (c) (DC:58) [16:38:12:250]: Client-side and UI is none or basic: Running entire install on the server. MSI (c) (DC:58) [16:38:12:250]: Grabbed execution mutex. MSI (c) (DC:58) [16:38:12:250]: Cloaking enabled. MSI (c) (DC:58) [16:38:12:250]: Attempting to enable all disabled priveleges before calling Install on Server MSI (c) (DC:58) [16:38:12:250]: Incrementing counter to disable shutdown. Counter after increment: 0 MSI (s) (90:58) [16:38:12:265]: Grabbed execution mutex. MSI (s) (90:DC) [16:38:12:265]: Resetting cached policy values MSI (s) (90:DC) [16:38:12:265]: Machine policy value 'Debug' is 0 MSI (s) (90:DC) [16:38:12:265]: ******* RunEngine: ******* Product: {56EA8BC0-3751-4B93-BC9D-6651CC36E5AA} ******* Action: ******* CommandLine: ********** MSI (s) (90:DC) [16:38:12:265]: Machine policy value 'DisableUserInstalls' is 0 MSI (s) (90:DC) [16:38:12:265]: Warning: Local cached package 'C:\WINDOWS\Installer\ce6d56e.msi' is missing. MSI (s) (90:DC) [16:38:12:265]: User policy value 'SearchOrder' is 'nmu' MSI (s) (90:DC) [16:38:12:265]: User policy value 'DisableMedia' is 0 MSI (s) (90:DC) [16:38:12:265]: Machine policy value 'AllowLockdownMedia' is 0 MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Media enabled only if package is safe. MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Looking for sourcelist for product {56EA8BC0-3751-4B93-BC9D-6651CC36E5AA} MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Adding {56EA8BC0-3751-4B93-BC9D-6651CC36E5AA}; to potential sourcelist list (pcode;disk;relpath). MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Now checking product {56EA8BC0-3751-4B93-BC9D-6651CC36E5AA} MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Media is enabled for product. MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Attempting to use LastUsedSource from source list. MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Trying source d:\2a2ac35788eea9066bae01\. MSI (s) (90:DC) [16:38:12:265]: Note: 1: 2203 2: d:\2a2ac35788eea9066bae01\msxml6.msi 3: -2147287037 MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Source is invalid due to missing/inaccessible package. MSI (s) (90:DC) [16:38:12:265]: Note: 1: 1706 2: -2147483647 3: msxml6.msi MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Processing net source list. MSI (s) (90:DC) [16:38:12:265]: Note: 1: 1706 2: -2147483647 3: msxml6.msi MSI (s) (90:DC) [16:38:12:265]: SOURCEMGMT: Processing media source list. MSI (s) (90:DC) [16:38:12:296]: SOURCEMGMT: Trying media source F:\. MSI (s) (90:DC) [16:38:12:296]: Note: 1: 2203 2: F:\msxml6.msi 3: -2147287038 MSI (s) (90:DC) [16:38:12:296]: SOURCEMGMT: Source is invalid due to missing/inaccessible package. MSI (s) (90:DC) [16:38:12:296]: Note: 1: 1706 2: -2147483647 3: msxml6.msi MSI (s) (90:DC) [16:38:12:296]: SOURCEMGMT: Processing URL source list. MSI (s) (90:DC) [16:38:12:296]: Note: 1: 1402 2: UNKNOWN\URL 3: 2 MSI (s) (90:DC) [16:38:12:296]: Note: 1: 1706 2: -2147483647 3: msxml6.msi MSI (s) (90:DC) [16:38:12:296]: Note: 1: 1706 2: 3: msxml6.msi MSI (s) (90:DC) [16:38:12:296]: SOURCEMGMT: Failed to resolve source MSI (s) (90:DC) [16:38:12:296]: MainEngineThread is returning 1612 MSI (c) (DC:58) [16:38:12:296]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1 MSI (c) (DC:58) [16:38:12:296]: MainEngineThread is returning 1612 === Verbose logging stopped: 3/28/2012 16:38:12 === When I click on the failed status for SSIS, no log file appears at all. To be honest, I'm not even sure where to start on this one - never guessed it would be so much trouble to add a component right from the disk. Any help or pointers whatsoever would be greatly appreciated. If any more details are needed, please ask - I'd be glad to add them.

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  • Sharepoint Web Part OnPreRender PostBack Dynamic TextBoxes Not Accessible In Button Handler

    - by Matt
    I have a custom webpart which extends System.Web.UI.WebControls.WebPart and implements an EditorPart. I have all the static controls being added in the overridden CreateChildControls method as I know this makes them persistent across PostBacks. However, I have some TextBoxes being added in the overridden OnPreRender method because the actual TextBoxes that I add depend upon the data returned from a Web Service which I am calling in OnPreRender. The Web Service has to be called in OnPreRender because I need some of the Property values that are set in the EditorPart. If I build this logic into the CreateChildControls method, obviously the data is not available on first PostBack after an edit is applied because the PostBack events are restored after CreateChildControls. This means the page has to be posted twice before the data is refreshed and that is just cludgy. How can make these TextBoxes along with their entered text values persistent across PostBacks so that I can access them in the button handler? Thanks for any help, Matt

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  • MongoMapper and migrations

    - by Clint Miller
    I'm building a Rails application using MongoDB as the back-end and MongoMapper as the ORM tool. Suppose in version 1, I define the following model: class SomeModel include MongoMapper::Document key :some_key, String end Later in version 2, I realize that I need a new required key on the model. So, in version 2, SomeModel now looks like this: class SomeModel include MongoMapper::Document key :some_key, String key :some_new_key, String, :required => true end How do I migrate all my existing data to include some_new_key? Assume that I know how to set a reasonable default value for all the existing documents. Taking this a step further, suppose that in version 3, I realize that I really don't need some_key at all. So, now the model looks like this class SomeModel include MongoMapper::Document key :some_new_key, String, :required => true end But all the existing records in my database have values set for some_key, and it's just wasting space at this point. How do I reclaim that space? With ActiveRecord, I would have just created migrations to add the initial values of some_new_key (in the version1 - version2 migration) and to delete the values for some_key (in the version2 - version3 migration). What's the appropriate way to do this with MongoDB/MongoMapper? It seems to me that some method of tracking which migrations have been run is still necessary. Does such a thing exist? EDITED: I think people are missing the point of my question. There are times where you want to be able to run a script on a database to change or restructure the data in it. I gave two examples above, one where a new required key was added and one where a key can be removed and space can be reclaimed. How do you manage running these scripts? ActiveRecord migrations give you an easy way to run these scripts and to determine what scripts have already been run and what scripts have not been run. I can obviously write a Mongo script that does any update on the database, but what I'm looking for is a framework like migrations that lets me track which upgrade scripts have already been run.

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  • Webbrowser control: Get text value from html text

    - by Khou
    The web browser has the following displayed content, within a html table. [Element] [Value] Name John Smith Email [email protected] We know that the value of the elements are on to the right of the element and they are both on the same line (this is how it appears on the screen but in the html code it might not appear like this). How do you get the values of element name and element email? (first remove all html tag? then somehow use regular express to get the values? or figure out how to use html agility pack?)

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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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  • Dyanamic Chart Series Labels

    - by McVey
    I have some Visual Basic Code that creates a chart for each row. It sets the series values using this code: .SeriesCollection(1).Values = "=" & Ws.Name & "!R" & CurrRow & "C3:R" & CurrRow & "C8" What I am struggling with is how do I set the series labels? The series labels will always be the 1st row and be in the corresponding column. I know this is much simplier than the code above, but I am stumped. Any help is appreciated.

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  • HTML table to “graphical text” for code comments

    - by Atif Aziz
    Is there a tool (ideally command-line-based) that can help in converting the source to HTML tables into “graphical text” (think perhaps ASCII art for HTML tables) for use in code comments (like /*…*/), as show below? /* +--------------------------------------------------------------------+ | Network | +--------------------------------------------------------------------+ | 11.05.2010 | ABC | DEF | +------------+-------------+-------------+-------------+-------------+ | | INPUT | OUTPUT | INPUT | OUTPUT | +------------+-------------+-------------+-------------+-------------+ | Value | 366,899,791 | 0 | 213,001 | 2,132,827 | +------------+-------------+-------------+-------------+-------------+ */ Background: A piece of code that reads values from HTML tables can be annotated with comments depicting text-based graphical representations of complex HTML table layouts. Someone maintaining the code later can then find it easier to understand, for example, how a piece of code is slicing and dicing an HTML table or plucking values at certain cell positions.

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  • Hi, I want to create new DOCX file by reading DOCX template (it's content is already replaced)

    - by ruwan Kumara
    Up to now code is read the template and replace with new values and finally replace the docx file with new values. Can any one please tell me how to save the replaced docx file in diffrent name?. My code is bellow. using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(document, true)) { string docText = null; using (StreamReader sr = new StreamReader(wordDoc.MainDocumentPart.GetStream())) { docText = sr.ReadToEnd(); } Regex regexText = new Regex("#ApplicationCompleteDate#"); docText = regexText.Replace(docText,DataHolding.ApplicationCompleteDate); regexText = new Regex("#ApplicantPrivateAddress#"); docText = regexText.Replace (docText,UserDataHolding.ApplicantPrivateAddress); using (StreamWriter sw = new StreamWriter(wordDoc.MainDocumentPart.GetStream (FileMode.Create))) { sw.Write(docText); } } If any one help me with this creating new docx file by changing above code, it will be very helpful for me. thank You.

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  • Linear Regression and Java Dates

    - by Smithers
    I am trying to find the linear trend line for a set of data. The set contains pairs of dates (x values) and scores (y values). I am using a version of this code as the basis of my algorithm. The results I am getting are off by a few orders of magnitude. I assume that there is some problem with round off error or overflow because I am using Date's getTime method which gives you a huge number of milliseconds. Does anyone have a suggestion on how to minimize the errors and compute the correct results?

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  • Resizing and rotating an image in Android

    - by kingrichard2005
    I'm trying to rotate and resize an image in Android. The code I have is as follows, (taken from this tutorial): Bitmap originalSprite = BitmapFactory.decodeResource(getResources(), R.drawable.android); int orgHeight = a.getHeight(); int orgWidth = a.getWidth(); //Create manipulation matrix Matrix m = new Matrix(); // resize the bit map m.postScale(.25f, .25f); // rotate the Bitmap by the given angle m.postRotate(180); //Rotated bitmap Bitmap rotatedBitmap = Bitmap.createBitmap(originalSprite, 0, 0, orgWidth, orgHeight, m, true); return rotatedBitmap; The image seems to rotate just fine, but it doesn't scale like I expect it to. I've tried different values, but the image only gets more pixelized as I reduce the scale values, but remains that same size visually; whereas the goal I'm trying to achieve is to actually shrink it visually. I'm not sure what to do at this point, any help is appreciated.

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  • How do i rotate a CALayer around a diagonal line?

    - by Mattias Wadman
    Hi. I'm trying to implement a flip animation to be used in board game like iPhone-application. The animation is supposed to look like a game piece that rotates and changes to the color of its back (kind of like an Reversi piece). I've managed to create an animation that flips the piece around its orthogonal axis, but when I try to flip it around a diagonal axis by changing the rotation around the z-axis the actual image also gets rotated (not surprisingly). Instead I would like to rotate the image "as is" around a diagonal axis. I have tried to change layer.sublayerTransform but with no success. Here is my current implementation. It works by doing a trick to resolve the issue of getting a mirrored image at the end of the animation. The solution is to not actually rotate the layer 180 degrees, instead it rotates it 90 degrees, changes image and then rotates it back. + (void)flipLayer:(CALayer *)layer toImage:(CGImageRef)image withAngle:(double)angle { const float duration = 0.5f; CAKeyframeAnimation *diag = [CAKeyframeAnimation animationWithKeyPath:@"transform.rotation.z"]; diag.duration = duration; diag.values = [NSArray arrayWithObjects: [NSNumber numberWithDouble:angle], [NSNumber numberWithDouble:0.0f], nil]; diag.keyTimes = [NSArray arrayWithObjects: [NSNumber numberWithDouble:0.0f], [NSNumber numberWithDouble:1.0f], nil]; diag.calculationMode = kCAAnimationDiscrete; CAKeyframeAnimation *flip = [CAKeyframeAnimation animationWithKeyPath:@"transform.rotation.y"]; flip.duration = duration; flip.values = [NSArray arrayWithObjects: [NSNumber numberWithDouble:0.0f], [NSNumber numberWithDouble:M_PI / 2], [NSNumber numberWithDouble:0.0f], nil]; flip.keyTimes = [NSArray arrayWithObjects: [NSNumber numberWithDouble:0.0f], [NSNumber numberWithDouble:0.5f], [NSNumber numberWithDouble:1.0f], nil]; flip.calculationMode = kCAAnimationLinear; CAKeyframeAnimation *replace = [CAKeyframeAnimation animationWithKeyPath:@"contents"]; replace.duration = duration / 2; replace.beginTime = duration / 2; replace.values = [NSArray arrayWithObjects:(id)image, nil]; replace.keyTimes = [NSArray arrayWithObjects: [NSNumber numberWithDouble:0.0f], nil]; replace.calculationMode = kCAAnimationDiscrete; CAAnimationGroup *group = [CAAnimationGroup animation]; group.removedOnCompletion = NO; group.duration = duration; group.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; group.animations = [NSArray arrayWithObjects:diag, flip, replace, nil]; group.fillMode = kCAFillModeForwards; [layer addAnimation:group forKey:nil]; }

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  • Cocos2d:How to Zoom-in Zoom-out effect on a Sprite image?

    - by user187532
    Hello everyone, I am developing module where-in i pick the image from photo library and put into a Sprite. I want to implement Zoom-in, Zoom-out kind of effect for a Sprite image, same like camera album images zoom in/out effect. Could someone please guide me how do i implement it? I see somewhere is that, i have to detect two touch events in TouchBegan and then Adjust the Sprite Scale size to up or down based on the distance of two fingers touch event values. Could someone please tell me, How do i detect two fingers touch values in TouchBegan? How to allow to touch and Zoom-in/out of Sprite image by user? Please give me samples. I tried already some stuff (http://groups.google.com/group/cocos2d-iphone-discuss/browse_thread/thread/61808fd6b578e5e1?hide_quotes=no&utoken=9AdrAzkAAABFNHPPibbeOSHIuKOkxTWQ066onEraO3W2r08xbUjNmAwT6_SsyC2n0d69MF_vYn77vPb7MuI5eIWgjrXT32Kd) but doesn't work for my requirement. Thank you.

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  • VB FFT - stuck understanding relationship of results to frequency

    - by WaveyDavey
    Trying to understand an fft (Fast Fourier Transform) routine I'm using (stealing)(recycling) Input is an array of 512 data points which are a sample waveform. Test data is generated into this array. fft transforms this array into frequency domain. Trying to understand relationship between freq, period, sample rate and position in fft array. I'll illustrate with examples: ======================================== Sample rate is 1000 samples/s. Generate a set of samples at 10Hz. Input array has peak values at arr(28), arr(128), arr(228) ... period = 100 sample points peak value in fft array is at index 6 (excluding a huge value at 0) ======================================== Sample rate is 8000 samples/s Generate set of samples at 440Hz Input array peak values include arr(7), arr(25), arr(43), arr(61) ... period = 18 sample points peak value in fft array is at index 29 (excluding a huge value at 0) ======================================== How do I relate the index of the peak in the fft array to frequency ?

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  • DataMining / Analyzing responses to Multiple Choice Questions in a survey

    - by Shailesh Tainwala
    Hi, I have a set of training data consisting of 20 multiple choice questions (A/B/C/D) answered by a hundred respondents. The answers are purely categorical and cannot be scaled to numerical values. 50 of these respondents were selected for free product trial. The selection process is not known. What interesting knowledge can be mined from this information? The following is a list of what I have come up with so far- A study of percentages (Example - Percentage of people who answered B on Qs.5 and got selected for free product trial) Conditional probabilities (Example - What is the probability that a person will get selected for free product trial given that he answered B on Qs.5) Naive Bayesian classifier (This can be used to predict whether a person will be selected or not for a given set of values for any subset of questions). Can you think of any other interesting analysis or data-mining activities that can be performed? The usual suspects like correlation can be eliminated as the response is not quantifiable/scoreable. Is my approach correct?

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