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  • Java Scripting Engine importing my classes does not work

    - by Ayman
    A code is worth 1000 words of explaining it :-) package jasim; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class JSTest { public static void main(String[] args) throws ScriptException { ScriptEngine jse = new ScriptEngineManager().getEngineByExtension("js"); jse.eval("println(new jasim.JSTest().toString)"); } @Override public String toString() { return "JSTest Object"; } } This code will fail with the below exception: Exception in thread "main" javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "jasim" is not defined. (<Unknown source>#1) in <Unknown source> at line number 1 How do I import my own classes into the ScriptEngine?

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  • Dynamic Linq help, different errors depending on object passed as parameter?

    - by sah302
    I have an entityDao that is inherbited by everyone of my objectDaos. I am using Dynamic Linq and trying to get some generic queries to work. I have the following code in my generic method in my EntityDao : public abstract class EntityDao<ImplementationType> where ImplementationType : Entity { public ImplementationType getOneByValueOfProperty(string getProperty, object getValue){ ImplementationType entity = null; if (getProperty != null && getValue != null) { LCFDataContext lcfdatacontext = new LCFDataContext(); //Generic LINQ Query Here entity = lcfdatacontext.GetTable<ImplementationType>().Where(getProperty + " =@0", getValue).FirstOrDefault(); //.Where(getProperty & "==" & CStr(getValue)) } //lcfdatacontext.SubmitChanges() //lcfdatacontext.Dispose() return entity; } }         Then I do the following method call in a unit test (all my objectDaos inherit entityDao): [Test] public void getOneByValueOfProperty() { Accomplishment result = accomplishmentDao.getOneByValueOfProperty("AccomplishmentType.Name", "Publication"); Assert.IsNotNull(result); } The above passes (AccomplishmentType has a relationship to accomplishment) Accomplishment result = accomplishmentDao.getOneByValueOfProperty("Description", "Can you hear me now?"); Accomplishment result = accomplishmentDao.getOneByValueOfProperty("LocalId", 4); Both of the above work Accomplishment result = accomplishmentDao.getOneByValueOfProperty("Id", New Guid("95457751-97d9-44b5-8f80-59fc2d170a4c"))       Does not work and says the following: Operator '=' incompatible with operand types 'Guid' and 'Guid Why is this happening? Guid's can't be compared? I tried == as well but same error. What's even moreso confusing is that every example of Dynamic Linq I have seen simply usings strings whether using the parameterized where predicate or this one I have commented out: //.Where(getProperty & "==" & CStr(getValue)) With or without the Cstr, many datatypes don't work with this format. I tried setting the getValue to a string instead of an object as well, but then I just get different errors (such as a multiword string would stop comparison after the first word). What am I missing to make this work with GUIDs and/or any data type? Ideally I would like to be able to just pass in a string for getValue (as I have seen for every other dynamic LINQ example) instead of the object and have it work regardless of the data Type of the column.

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  • Why does this crash with access violation to 0xcccccc...?

    - by Mike
    I have a random piece of code, I use for reading from CSV files... and it's fine... until after about 2000 reads... then the getline line fails with an access violation to 0xcccccc... which I assume means that the input stream (file) has been cleared... Not that I know why :) int CCSVManager::ReadCSVLine ( fstream * fsInputFile, vector <string> * recordData ) { string s; getline ( *fsInputFile, s ); stringstream iss( s ); for ( unsigned int i = 0; i < getNumFields (); i++ ) { getline ( iss, s, ',' ); (*recordData)[i] = s; } return 0; } Any ideas why?

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  • Derived Column Editor

    - by Rob Bowman
    Hi I need to assign a formatted date to a column in a data flow. I have added a Derived Column editor and entered the following expression: "BBD" + SUBSTRING((DT_WSTR,4)DATEADD("Day",30,GETDATE()),1,4) + SUBSTRING((DT_WSTR,2)DATEADD("Day",30,GETDATE()),6,2) + SUBSTRING((DT_WSTR,2)DATEADD("Day",30,GETDATE()),9,2) The problem is that the "Derived Column Transformation Editor" automatically assigns a Data Type of "Unicode string[DT_WSTR]" and a length of "7". Howver, the length of a string is 11, therefore the following exception is thrown each time: [Best Before Date [112]] Error: The "component "Best Before Date" (112)" failed because truncation occurred, and the truncation row disposition on "output column "Comments" (132)" specifies failure on truncation. A truncation error occurred on the specified object of the specified component. Does anyone know why the edit is insisting on a length of 7? I don't seem to be able to change this. Many thanks, Rob.

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  • MySQLNonTransientConnectionException in jdbc program at run time

    - by Sunil Kumar Sahoo
    Hi I have created jdbc mysql connection. my program works fine for simple execution of query. But if i run the same program for more than 10 hour and execute query then i receives the following mysql exception. I have not used close() method anywhere. i created database connection and opened it forever and always execute query. there is no where that i explicitly mentioned timeout for connection. i am unable to identify the problem com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Connection.close() has already been called. Invalid operation in this state. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after statement closed. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) sample code for database connection: String driver = PropertyReader.getDriver(); String url = dbURLPath; Class.forName(driver); connectToServerDB = DriverManager.getConnection(url); connectToServerDB.setAutoCommit(false);

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  • Error connecting to exchange mailbox using WebDav

    - by Warda
    We have a windows service that uses the “WebDAV .NET for Exchange” libraries to access the mail server. The WebDav libraries attempts to access the mailbox to process mails. The Error occurs on attempting to retrieve the mailbox contents. The Code snippet below is how the code retrieves the mailbox contents: NetworkCredential credential = new NetworkCredential(Username, Password, Domain); WebdavSession session = new WebdavSession(credential); session.UserMailbox = MailServerURL; Resource resource = new Resource(session); if (UseFormsBasedAuthentication) resource.PerformFormsBasedAuthentication(https://owa.domain.company.org/[email protected]/Inbox"); Mailbox myMailbox = resource.Mailbox; Calling the “resource.Mailbox” raises the following exception: --- System.Net.WebException: The remote server returned an error: (405) Method Not Allowed. at System.Net.HttpWebRequest.GetResponse() at Independentsoft.Webdav.Exchange.Resource.a(String A_0, PropertyName[] A_1) at Independentsoft.Webdav.Exchange.Resource.e(String A_0) at Independentsoft.Webdav.Exchange.Resource.get_Mailbox() at Any helps will be more than appreciated. Thanks

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  • Binary comparison operators on generic types

    - by Brian Triplett
    I have a generic class that takes a type T. Within this class I have a method were I need to compare a type T to another type T such as: public class MyClass<T> { public T MaxValue { // Implimentation for MaxValue } public T MyMethod(T argument) { if(argument > this.MaxValue) { // Then do something } } } The comparison operation inside of MyMethod fails with Compiler Error CS0019. Is it possible to add a constraint to T to make this work? I tried adding a where T: IComparable<T> to the class definition to no avail.

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  • How to add multiple values to the ViewData using asp.net MVC

    - by kumar
    Hello Friends, I have one ActionResult method public ActionResult StudentInfo(string id,string studentType) { var Info= Student.GetStudentInfo(Convert.ToInt32(e),studentType); return PartialView(Info); } } This ActionResult is executed multiple time accoording the number user selected from previous page..each and every student id and StudentType is passed by that view to this ActionResult. my question is there any way that in ViewData we can store all these id's and studentType's so that I can use these id' and StudentType's in other ActionResult? bec I need only these two things in other ActionResult? I can implement this using cache but I dont want to do with that. thanks for patience..

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  • Missing output when running system command in perl/cgi file

    - by aladine
    I need to write a CGI program and it will display the output of a system command: script.sh echo "++++++" VAR=$(expect -c " spawn ssh -o StrictHostKeyChecking=no $USER@$HOST $CMD match_max 100000 expect \"*?assword:*\" send -- \"$PASS\r\" send -- \"\r\" expect eof ") echo $VAR echo "++++++" In CGI file: my $command= "ksh ../cgi-bin/script.sh"; my @output= `$command`; print @output; Finally, when I run the CGI file in unix, the $VAR is a very long string including \n and some delimiters. However, when I run on web server, the output is ++++++ ++++++ So $VAR is missing when passing in the web interface/browser. I know maybe the problem is $VAR is very long string. But anyway, is there anyway to solve this problem except writing the output to a file then retrieve it from browser? Thanks if you are interested in my question.

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  • Object Dump JavaScript

    - by Jessy Houle
    Is there a 3rd party add-on/application or some way to perform object map dumping in script debugger for a JavaScript object? Here is the situation... I have a method being called twice, and during each time something is different. I'm not sure what is different, but something is. So, if I could dump all the properties of window (or at least window.document) into a text editor, I could compare the state between the two calls with a simple file diff. Thoughts? Thank you in advance. -Jessy Houle

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  • SharePoint's CAML query the "Created By" field with username

    - by yellowblood
    Hey, I have a form for administrators where they insert a user name ("domain\name") and the code gets and sets some information out of it. It's a huge project and some of the lists contain the username as a string ("domain\name"), but some lists only count on the "Created By" column, which is auto-created. I want to know what's the fastest way to query these lists using the username string. I tried to use the same query as the one I use for the first kind of lists and it obviously didn't work - <Where><Eq><FieldRef Name='UserName'/><Value Type='Text'>domain\\username</Value></Eq></Where> Thank you.

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  • Achieve Rails-style migrations in MS Access VBA application

    - by avguchenko
    This is a simple way to do Rails-style migrations in a VBA application. Just add additional migrations like migration(name, sql_string, database) to run_migratons and call run_migrations somewhere in the beginning of your execution. Function migrate(signature As String, sql As String, dbs As DAO.database) Dim rs As DAO.Recordset Set rs = dbs.OpenRecordset("select * from versions where migration = '" & signature & "'") If rs.EOF Then dbs.Execute (sql) rs.AddNew rs("migration") = signature rs.Update End If End Function Function setup_versions(dbs As DAO.database) Dim t As DAO.TableDef On Error Resume Next Set t = dbs.TableDefs("versions") If Err.Number <> 0 Then dbs.Execute ("CREATE TABLE versions (migration text)") End If Err.Clear End Function Function run_migrations(dbs As DAO.database) setup_versions(dbs) migrate("20100315142400_create_table", "CREATE TABLE table_name (field1 type, field 2 type)", dbs) 'add migrations here' End Function

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  • Can Nokogiri use a SAX parser to parse an HTML fragment?

    - by .yahoo.co.jpaqwsykcj3aulh3h1k0cy6nzs3isj
    I have this code. class MyParser < Nokogiri::XML::SAX::Document def characters(string) LOG.debug("characters #{string}") end def start_element(name, attrs = []) LOG.debug("start_element #{name}") end def end_element(name) LOG.debug("end_element #{name}") end end parser = Nokogiri::HTML::SAX::Parser.new(MyParser.new) parser.parse(File.new($*[0], 'rb')) Run on an HTML fragment like this, <h1>Hello</h1> <p>Hi.</p> the output shows that only the first element is processed: start_element h1 characters Hello end_element h1 If I wrap the fragment in html and body tags, the whole input is parsed. Is there a way to use a SAX style parser on HTML fragments?

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  • reference parent class function in AS 3.0

    - by vasion
    I am trying to run a function of the main class, but even with casting it does not work. I get this error TypeError: Error #1009: Cannot access a property or method of a null object reference. at rpflash.communication::RPXMLReader/updateplaylist() at rpflash.communication::RPXMLReader/dataHandler() at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at flash.net::XMLSocket/scanAndSendEvent() this is the main class code package{ import flash.display.MovieClip; import rpflash.communication.RPXMLReader; public class Main extends MovieClip{ var reader:RPXMLReader = new RPXMLReader(); public function Main(){ trace('Main actionscript loaded'); } public function test(){ trace('test worked');} } } and this is the function trying to call it: private function updateplaylist(){ //xml to string var xmls:String= xml.toXMLString(); trace('playlist updated debug point'); MovieClip(this.parent).test();} what am i doing wrong?

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  • Using Multiple File Handles for Single File

    - by Ryan Rosario
    I have an O(n^2) operation that requires me to read line i from a file, and then compare line i to every line in the file. This repeats for all i. I wrote the following code to do this with 2 file handles, but it does not yield the result I am looking for. I imagine this is a simple error on my part. IN1 = open("myfile.dat","r") IN2 = open("myfile.dat","r") for line1 in IN1: for line2 in IN2: print line1.strip(), line2.strip() IN1.close() IN2.close() The result: Hello Hello Hello World Hello This Hello is Hello an Hello Example Hello of Hello Using Hello Two Hello File Hello Pointers Hello to Hello Read Hello One Hello File The output should contain 15^2 lines.

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  • How to create simple animations in 3gp format?

    - by yaseemin
    I am trying to create a simple animation which includes face of a famous character. For example Santa Clause. The face and the lips of the character will act according to the given input message. For example if a string is inputed then the lips of the character will be opened and closed till the end of the string while the given input message is vocalized using a text to speech converter. Moreover if the " :) " is used the character in the animation will smile. How could I do this? I was told that I can create this type of animations using "smill". But this is not convenient for the other purposes therefore I need to use a different method. Could you give me any suggestions? Thanks in advence.

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  • Android OutOfMemoryError - Loading JSON File

    - by jeremynealbrown
    The app I am working on needs to read a JSON file that may be anywhere from 1.5 to 3 MB in size. It seems to have no problem opening the file and converting the data to a string, but when it attempts to convert the string to a JSONArray, OutOfMemoryErrors are thrown. The exceptions look something like this: E/dalvikvm-heap( 5307): Out of memory on a 280-byte allocation. W/dalvikvm( 5307): Exception thrown (Ljava/lang/OutOfMemoryError;) while throwing internal exception (Ljava/lang/OutOfMemoryError;) One strange thing about this is that the crash only occurs every 2nd or 3rd time the app is run, leaving me to believe that the memory consumed by the app is not being garbage collected each time the app closes. Any insight into how I might get around this issue would be greatly appreciated. I am open to the idea of loading the file in chunks, but I'm not quite sure what the best approach is for such a task. Thank you

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  • How to use Apache HWPF to extract text and images out of a DOC file

    - by Hamed
    Hi...! I downloaded the Apache HWPF. I want to use it to read a doc file and write its text into a plain text file. I don't know the HWPF so well. My very simple program is here: I have 3 problems now: 1-Some of packages have errors ( they can't find apache hdf). How I can fix them? 2-How I can use the methods of HWDF to find and extract the images out? 3-Some piece of my program is incomplete and incorrect.So please help me to complete it. I have to complete this program in 2 days. once again I repeat Please Please help me to complete this. Thanks you Guys a lot for your help!!! This is My Elementary code : import org.apache.poi.poifs.filesystem.*; import org.apache.poi.hwpf.*; import org.apache.poi.hwpf.extractor.*; import org.apache.poi.hwpf.model.PicturesTable; import org.apache.poi.hwpf.usermodel.Picture; public class test { public void m1 (){ String filesname = "Hello.doc"; POIFSFileSystem fs = null; fs = new POIFSFileSystem(new FileInputStream(filesname ); HWPFDocument doc = new HWPFDocument(fs); WordExtractor we = new WordExtractor(doc); String str = we.getText() ; String[] paragraphs = we.getParagraphText(); Picture pic = new Picture(. . .) ; pic.writeImageContent( . . . ) ; PicturesTable picTable = new PicturesTable( . . . ) ; if ( picTable.hasPicture( . . . ) ){ picTable.extractPicture(..., ...); picTable.getAllPictures() ; } }

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  • Which layer should create DataContext?

    - by Kevin
    I have a problem to decide which layer in my system should create DataContext. I have read a book, saying that if do not pass the same DataContext object for all the database updates, it will sometimes get an exception thrown from the DataContext. That's why i initially create new instance of DataContext in business layer, and pass it into data access layer. So that the same datacontext is used for all the updates. But this lead to one design problem, if i wanna change my DAL to Non-LinqToSQL in future, i need to re-write the code in business layer as well. Please give me some advice on this. Thanks. Example code 'Business Layer Public Sub SaveData(name As String) Using ts AS New TransactionScope() Using db As New MyDataContext() DAL.Insert(db,name) DAL.Insert(db,name) End Using ts.Complete() End Using End Sub 'Data Access Layer Public Sub Insert(db as MyDataContext,name As string) db.TableAInsert(name) End Sub

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  • Python equivalent of Java's compareTo()

    - by astay13
    I'm doing a project in Python (3.2) for which I need to compare user defined objects. I'm used to OOP in Java, where one would define a compareTo() method in the class that specifies the natural ordering of that class, as in the example below: public class Foo { int a, b; public Foo(int aa, int bb) { a = aa; b = bb; } public int compareTo(Foo that) { // return a negative number if this < that // return 0 if this == that // return a positive number if this > that if (this.a == that.a) return this.b - that.b; else return this.a - that.a; } } I'm fairly new to classes/objects in Python, so I'd like to know what is the "pythonic" way to define the natural ordering of a class?

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  • newbie question: how to show a drop down menu with this function

    - by Mellon
    My model object (e.g. MyObject) has one property (e.g. color), the "color" property holds a string value which comes from a list of string (e.g. colors=['red','yellow', 'black']). now, I have one instance of myObject get from database and show on the view page in a row, I need to show the 'color' property of myObject in a drop down menu with the current value as the default selected. How to implement this in Rails 3 in my view page. (Later, when user select from the dropdown menu, the object will be updated in DB based on user's selection) Please explain with instance "myObject" and list "colors=[...]"

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  • Sequel Migration not running up?

    - by Sleepycat
    Having some trouble with the Migrations in Sequel and could use another set of eyes. I am running a migration that looks ok but no table is created. It is definitely connecting because I can see the schema_info table has been created. -M 0/1 changes the version as you would expect but still no table. The command: sequel -m . -M 1 ~/Desktop/dbtest/testdb.yml 001_testdb.rb: class TestDb < Sequel::Migration def up create_table( "terminals") do primary_key :id Integer :location_id Integer :merchant_id BigDecimal :terminal_id, :size=>[11, 0] String :reference, :size=>255 DateTime :created_at DateTime :updated_at String :image, :default=>"default.jpg", :size=>255 end end def down drop_table :terminals end end The output in Postgres: test_db=# \dt List of relations Schema | Name | Type | Owner --------+-------------+-------+---------- public | schema_info | table | postgres (1 row) test_db=# select * from schema_info; version --------- 1 (1 row)

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  • Csharp component which generates fragmens with highlights for diffs for 2 strings

    - by MicMit
    I need C# equivalent ( ideally open source ) which is similar to Delphi DLL. I am currently using the wrapper ( C# syntax is provided , but it is a call from a different language ) zdiff( string ref str1, string ref str2, int range , int trim ) it calls inside str1 = GetHiDiff(@str1,1,trim) str2 = GetHiDiff(@str1,2,trim) where function GetHiDiff(s:pchar; sIndex:integer; wtrim:integer): pchar; stdcall; What it does it returns a left fragment html of str1 and a right html fragment of str2 with diffs highlighted as strings are passed by reference. Range parameter determines the size of html fragment. Not sure what trim 0 does.

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  • Odd ActiveRecord model dynamic initialization bug in production

    - by qfinder
    I've got an ActiveRecord (2.3.5) model that occasionally exhibits incorrect behavior that appears to be related to a problem in its dynamic initialization. Here's the code: class Widget < ActiveRecord::Base extend ActiveSupport::Memoizable serialize :settings VALID_SETTINGS = %w(show_on_sale show_upcoming show_current show_past) VALID_SETTINGS.each do |setting| class_eval %{ def #{setting}=(val); self.settings[:#{setting}] = (val == "1"); end def #{setting}; self.settings[:#{setting}]; end } end def initialize_settings self.settings ||= { :show_on_sale => true, :show_upcoming => true } end after_initialize :initialize_settings # All the other stuff the model does end The idea was to use a single record field (settings) to persist a bunch of configuration data for this object, but allow all the settings to seamlessly work with form helpers and the like. (Why this approach makes sense here is a little out of scope, but let's assume that it does.) Net-net, Widget should end up with instance methods (eg #show_on_sale= #show_on_sale) for all the entires in the VALID_SETTINGS array. Any default values should be specified in initialize_settings. And indeed this works, mostly. In dev and staging, no problems at all. But in production, the app sometimes ends up in a state where a) any writes to the dynamically generated setters fail and b) none of the default values appear to be set - although my leading theory is that the dynamically generated reader methods are just broken. The code, db, and environment is otherwise identical between the three. A typical error message / backtrace on the fail looks like: IndexError: index 141145 out of string (eval):2:in []=' (eval):2:inshow_on_sale=' [GEM_ROOT]/gems/activerecord-2.3.5/lib/active_record/base.rb:2746:in send' [GEM_ROOT]/gems/activerecord-2.3.5/lib/active_record/base.rb:2746:inattributes=' [GEM_ROOT]/gems/activerecord-2.3.5/lib/active_record/base.rb:2742:in each' [GEM_ROOT]/gems/activerecord-2.3.5/lib/active_record/base.rb:2742:inattributes=' [GEM_ROOT]/gems/activerecord-2.3.5/lib/active_record/base.rb:2634:in `update_attributes!' ...(then controller and all the way down) Ideas or theories as to what might be going on? My leading theory is that something is going wrong in instance initialization wherein the class instance variable settings is ending up as a string rather than a hash. This explains both the above setter failure (:show_on_sale is being used to index into the string) and the fact that getters don't work (an out of bounds [] call on a string just returns nil). But then how and why might settings occasionally end up as a string rather than hash?

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  • DataReceived Event handler not receiving messages using c#

    - by karthik
    I'm using the below code to receive the messages using serial port event handler. But it dosent receives any.I am not getting errors. The code breaks in "string msg = comport.Readline()" Am i doing something wrong ? public partial class SerialPortScanner : Form { private SerialPort comPort = new SerialPort(); public SerialPortScanner() { InitializeComponent(); comPort.Open(); comPort.DataReceived += new SerialDataReceivedEventHandler(comPort_DataReceived); } void comPort_DataReceived(object sender, SerialDataReceivedEventArgs e) { if (comPort.IsOpen == true) { string msg = comPort.ReadLine(); MessageBox.Show(msg); } } }

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