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  • Hibernate mapping, on a unmapped class

    - by Jan
    Hi, I' ve got 2 tables... Challenge and ChallengeYear, ChallengeYear is only to create a list of years in challenge. I only want to make Challenge an entity, containing a list of List years. Is this possible? I've looked in to @SecondaryTable together with @JoinColumn and @OneToMany, but neither of those can do the trick, or i am overlooking something. Can someone help me? Greetings, Jan

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  • How to call base abstract or interface from DAL into BLL?

    - by programmerist
    How can i access abstract class in BLL ? i shouldn't see GenAccessor in BLL it must be private class GenAccessor . i should access Save method over _AccessorForSQL. ok? MY BLL cs: public class AccessorForSQL: GenoTip.DAL._AccessorForSQL { public bool Save(string Name, string SurName, string Adress) { ListDictionary ld = new ListDictionary(); ld.Add("@Name", Name); ld.Add("@SurName", SurName); ld.Add("@Adress", Adress); return **base.Save("sp_InsertCustomers", ld, CommandType.StoredProcedure);** } } i can not access base.Save....???????? it is my DAL Layer: namespace GenoTip.DAL { public abstract class _AccessorForSQL { public abstract bool Save(string sp, ListDictionary ld, CommandType cmdType); public abstract bool Update(); public abstract bool Delete(); public abstract DataSet Select(); } private class GenAccessor : _AccessorForSQL { DataSet ds; DataTable dt; public override bool Save(string sp, ListDictionary ld, CommandType cmdType) { SqlConnection con = null; SqlCommand cmd = null; SqlDataReader dr = null; try { con = GetConnection(); cmd = new SqlCommand(sp, con); con.Open(); cmd.CommandType = cmdType; foreach (string ky in ld.Keys) { cmd.Parameters.AddWithValue(ky, ld[ky]); } dr = cmd.ExecuteReader(); ds = new DataSet(); dt = new DataTable(); ds.Tables.Add(dt); ds.Load(dr, LoadOption.OverwriteChanges, dt); } catch (Exception exp) { HttpContext.Current.Trace.Warn("Error in GetCustomerByID()", exp.Message, exp); } finally { if (dr != null) dr.Close(); if (con != null) con.Close(); } return (ds.Tables[0].Rows.Count 0) ? true : false; } public override bool Update() { return true; } public override bool Delete() { return true; } public override DataSet Select() { DataSet dst = new DataSet(); return dst; } private static SqlConnection GetConnection() { string connStr = WebConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; SqlConnection conn = new SqlConnection(connStr); return conn; }

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  • how does a sql query work?

    - by Anand
    Hi, How does a sql query work ? how does it get compiled ? Is the from clause complied first to see if the table exists ? How does it actually retrieve data from the database ? How and in what format are the tables stored in a database ? I am using phpmyadmin is there anyway I can peek into the files where data is stored ??

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  • MySQL DUMP as CSV

    - by swt83
    I've looked around and nothing seems to work: $file = '/path/to/file.csv'; $cmd = 'mysqldump DATABASE TABLE > '.$file.' --host=localhost --user=USER --password=PASS'; $cmd .= ' --lock-tables=false --no-create-info --tab=/tmp --fields-terminated-by=\',\''; exec($cmd); Everything I try creates an empty CSV file. Any ideas? Thanks much.

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  • Issue with python string join.

    - by Pradyot
    I have some code in which I apply a join to a list. The list before the join looks like this: ["'DealerwebAgcy_NYK_GW_UAT'", "'DealerwebAgcy'", "'UAT'", '@ECNPhysicalMarketCo nfigId', "'GATEWAY'", "'DEALERWEB_MD_AGCY'", "'NU1MKVETC'", "'mkvetcu'", "'C:\te mp'", '0', "'NYK'", '0', '1', "'isqlw.exe'", 'GetDate()', '12345', "'NYK'", '350 ', '7'] After the join this is the resulting string 'DealerwebAgcy_NYK_GW_UAT','DealerwebAgcy','UAT',@ECNPhysicalMarketConfigId,'GAT EWAY','DEALERWEB_MD_AGCY','NU1MKVETC','mkvetcu','C: emp',0,'NYK',0,1,'isqlw. exe',GetDate(),12345,'NYK',350,7 Note the element "'C:\temp'" which ends up as ,'C: emp', I tried something similar on the python command prompt , but I wasn't able to 2 repeat this. the relevant code responsible for this magic is as follows. values_dict["ECNMarketInstance"] = [strVal(self.EcnInstance_),strVal (self.DisplayName_) ,strVal(self.environment_), '@ECNPhysicalMarketConfigId', strVal(self.EcnGatewaTypeId_),strVal(self.ConnectionComponent_) ,strVal(self.UserName_),strVal(self.Password_),strVal(self.WorkingDir_),"0",strVal(self.region_),"0","1", strVal(self.LUVersion_), "GetDate()" , self.LUUserId_ ,strVal(self.LUOwningSite_),self.QuoteColumnId_ , self.Capabilities_] delim = "," joined = delim.join(values) print values print joined

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  • Avoiding Redundancies in XML documents

    - by MarceloRamires
    I was working with a certain XML where there were no redundancies <person> <eye> <eye_info> <eye_color> blue </eye_color> </eye_info> </eye> <hair> <hair_info> <hair_color> blue </hair_color> </hair_info> </hair> </person> As you can see, the sub-tag eye-color makes reference to eye in it's name, so there was no need to avoid redundancies, I could get the eye color in a single line after loading the XML into a dataset: dataset.ReadXml(path); value = dataset.Tables("eye_info").Rows(0)("eye_color"); I do realise it's not the smartest way of doing so, and this situation I'm having now wasn't unforeseen. Now, let's say I have to read xml's that are in this format: <person> <eye> <info> <color> blue </color> </info> </eye> <hair> <info> <color> blue </color> </info> </hair> </person> So If I try to call it like this: dataset.ReadXml(path); value = dataset.Tables("info").Rows(0)("color"); There will be a redundancy, because I could only go as far as one up level to identify a single field in a XML with my previous method, and the 'disambiguator' is three levels above. Is there a practical way to reach with no mistake a single field given all the above (or at least a few) fields ?

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  • Castle ActiveRecord - schema generation without enforcing referential integrity?

    - by Simon
    Hi all, I've just started playing with Castle active record as it seems like a gentle way into NHibernate. I really like the idea of the database schema being generate from my classes during development. I want to do something similar to the following: [ActiveRecord] public class Camera : ActiveRecordBase<Camera> { [PrimaryKey] public int CameraId {get; set;} [Property] public int CamKitId {get; set;} [Property] public string serialNo {get; set;} } [ActiveRecord] public class Tripod : ActiveRecordBase<Tripod> { [PrimaryKey] public int TripodId {get; set;} [Property] public int CamKitId {get; set;} [Property] public string serialNo {get; set;} } [ActiveRecord] public class CameraKit : ActiveRecordBase<CameraKit> { [PrimaryKey] public int CamKitId {get; set;} [Property] public string description {get; set;} [HasMany(Inverse=true, Table="Cameras", ColumnKey="CamKitId")] public IList<Camera> Cameras {get; set;} [HasMany(Inverse=true, Table="Tripods", ColumnKey="CamKitId")] public IList<Camera> Tripods {get; set;} } A camerakit should contain any number of tripods and cameras. Camera kits exist independently of cameras and tripods, but are sometimes related. The problem is, if I use createschema, this will put foreign key constraints on the Camera and Tripod tables. I don't want this, I want to be able to to set CamKitId to null on the tripod and camera tables to indicate that it is not part of a CameraKit. Is there a way to tell activerecord/nhibernate to still see it as related, without enforcing the integrity? I was thinking I could have a cameraKit record in there to indicate "no camera kit", but it seems like oeverkill. Or is my schema wrong? Am I doing something I shouldn't with an ORM? (I've not really used ORMs much) Thanks!

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  • PHP Doctrine: Custom nested set?

    - by ropstah
    Is it possible to have nested set capabilities in this somewhat custom setup? Consider these 4 tables: Object: (oid, name) contains: [1, 'Licence'] and [2, 'Exemption'] Licence: (lid, name) Exemption: (eid, name) Cost: (oid, oid_ref, cost_oid, cost_oid_ref) For: P = Licence with lid [1] R = Exemption with eid [2] i can say "object P is a parent to object R" if the following Cost record exists: [oid: 2 oid_ref: 2 cost_oid: 1 cost_oid_ref: 1] I understand that this creates somesort of 'conditional foreign key' relation which I need to define in code. Is it possible to have the nested set loaded with these conditions?

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  • Sharepoint Variations Error

    - by marcocampos
    I'm getting some crazy errors when trying to create variations in Sharepoint. Has anybody seen this error? PublishingPage::AttemptPairUpWithPage() Ends. this: http://wseasp05/PT/Paginas/Destaque1.aspx, destPageUrl: /ES/Paginas/Destaque1.aspx Begin DeploymentWrapper::SynchronizePeerPages(), sourcePage = Paginas/Destaque1.aspx DeploymentWrapper::SynchronizePeerPages(), synchronizeDestUrl = /ES/Paginas/Destaque1.aspx Access to the path 'C:\Windows\TEMP\11c7c12e-030d-4860-a942-f5ab71f0930d\ExportSettings.xml' is denied. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options) at System.IO.FileInfo.Create() at Microsoft.SharePoint.Deployment.Ex... ...portDataFileManager.Initialize() at Microsoft.SharePoint.Deployment.SPExport.InitializeExport() at Microsoft.SharePoint.Deployment.SPExport.Run() Export Completed. DeploymentWrapper.SynchronizePeerPages() catches UnauthorizedAccessException. Spawn failed for /ES/Paginas/Destaque1.aspx End of DeploymentWrapper.SynchronizePeerPages() Thanks in advance.

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  • Repeated Squaring - Matrix Multiplication using NEWMAT

    - by Dinakar Kulkarni
    I'm trying to use the repeated squaring algorithm (using recursion) to perform matrix exponentiation. I've included header files from the NEWMAT library instead of using arrays. The original matrix has elements in the range (-5,5), all numbers being of type float. # include "C:\User\newmat10\newmat.h" # include "C:\User\newmat10\newmatio.h" # include "C:\User\newmat10\newmatap.h" # include <iostream> # include <time.h> # include <ctime> # include <cstdlib> # include <iomanip> using namespace std; Matrix repeated_squaring(Matrix A, int exponent, int n) //Recursive function { A(n,n); IdentityMatrix I(n); if (exponent == 0) //Matrix raised to zero returns an Identity Matrix return I; else { if ( exponent%2 == 1 ) // if exponent is odd return (A * repeated_squaring (A*A, (exponent-1)/2, n)); else //if exponent is even return (A * repeated_squaring( A*A, exponent/2, n)); } } Matrix direct_squaring(Matrix B, int k, int no) //Brute Force Multiplication { B(no,no); Matrix C = B; for (int i = 1; i <= k; i++) C = B*C; return C; } //----Creating a matrix with elements b/w (-5,5)---- float unifRandom() { int a = -5; int b = 5; float temp = (float)((b-a)*( rand()/RAND_MAX) + a); return temp; } Matrix initialize_mat(Matrix H, int ord) { H(ord,ord); for (int y = 1; y <= ord; y++) for(int z = 1; z<= ord; z++) H(y,z) = unifRandom(); return(H); } //--------------------------------------------------- void main() { int exponent, dimension; cout<<"Insert exponent:"<<endl; cin>>exponent; cout<< "Insert dimension:"<<endl; cin>>dimension; cout<<"The number of rows/columns in the square matrix is: "<<dimension<<endl; cout<<"The exponent is: "<<exponent<<endl; Matrix A(dimension,dimension),B(dimension,dimension); Matrix C(dimension,dimension),D(dimension,dimension); B= initialize_mat(A,dimension); cout<<"Initial Matrix: "<<endl; cout<<setw(5)<<setprecision(2)<<B<<endl; //----------------------------------------------------------------------------- cout<<"Repeated Squaring Result: "<<endl; clock_t time_before1 = clock(); C = repeated_squaring (B, exponent , dimension); cout<< setw(5) <<setprecision(2) <<C; clock_t time_after1 = clock(); float diff1 = ((float) time_after1 - (float) time_before1); cout << "It took " << diff1/CLOCKS_PER_SEC << " seconds to complete" << endl<<endl; //--------------------------------------------------------------------------------- cout<<"Direct Squaring Result:"<<endl; clock_t time_before2 = clock(); D = direct_squaring (B, exponent , dimension); cout<<setw(5)<<setprecision(2)<<D; clock_t time_after2 = clock(); float diff2 = ((float) time_after2 - (float) time_before2); cout << "It took " << diff2/CLOCKS_PER_SEC << " seconds to complete" << endl<<endl; } I face the following problems: The random number generator returns only "-5" as each element in the output. The Matrix multiplication yield different results with brute force multiplication and using the repeated squaring algorithm. I'm timing the execution time of my code to compare the times taken by brute force multiplication and by repeated squaring. Could someone please find out what's wrong with the recursion and with the matrix initialization? NOTE: While compiling this program, make sure you've imported the NEWMAT library. Thanks in advance!

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  • How to build a search engine in C#

    - by Kumar
    I am trying to build a web application in ASP.NET MVC and need build a pretty complex search feature. When a user enters a search term I want to search a variety of data sources which include documents, tables in the database, webpage urls and some APIs like facebook. Any tips, tutorials and hints would be greatly appreciated.

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  • A MySQL schema parser in Java?

    - by Richard
    Hi all, Does anyone know whether there is a java library for parsing a MySQL schema? In code I want to be able to determine the tables and fields specified in a schema. Or am I going to have to write my own? Thanks Richard.

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  • How do I rename a table in SQL Server Compact Edition?

    - by romkyns
    I've designed my SQL CE tables using the built-in designer in VS2008. I chose the wrong names for a couple. I am now completely stuck trying to find a way to rename them. I am refusing to believe that such a feature could have been "forgotten". How do I rename an existing table using the VS2008 designer, or a free stand-alone app?

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  • Product with Last Purchase Date

    - by mikewin86
    Hello , I would like to query from SQL Server 2000 Database.I have got two tables. They are Purchase and PurchaseDetails. I would like to get product records with Last Purchase ID but I can't query with the following statements.So please help me. SELECT TOP 100 PERCENT dbo.Purchase.PurchaseID AS LastOfPurchaseID, dbo.PurchaseDetails.ProductID, MAX(dbo.Purchase.PurchaseDate) AS LastOfPurchaseDate FROM dbo.Purchase INNER JOIN dbo.PurchaseDetails ON dbo.Purchase.PurchaseID = dbo.PurchaseDetails.PurchaseID GROUP BY dbo.PurchaseDetails.ProductID, dbo.Purchase.PurchaseDate,dbo.Purchase.PurchaseID ORDER BY MAX(dbo.Purchase.PurchaseDate) DESC

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  • Using a Linq-To-SQL class automagically generates the connection string for me; is there a way to ma

    - by Sergio Tapia
    I'm just beginning to use Linq-to-SQL and it's just wonderful to use. The problem is, this software is going to be run on a lot of machines and each machine will have a unique connection string. Is there a way for me to manually set the connection the Linq-to-SQL (.dbml) uses? The way I'm doing things now is creating the .dbml file, and in the graphic designer I'm dragging tables from the Server Explorer to the white board of the .dbml.

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  • Installing bitarray in Python 2.6 on Windows

    - by John Fouhy
    I would like to install bitarray in Windows running python 2.6. I have mingw32 installed, and I have C:\Python26\Lib\distutils\distutils.cfg set to: [build] compiler = mingw32 If I type, in a cmd.exe window: C:\Documents and Settings\john\My Documents\bitarray-0.3.5>python setup.py install I get: [normal python messages skipped] C:\MinGW\bin\gcc.exe -mno-cygwin -mdll -O -Wall -IC:\Python26\include -IC:\Python26\PC -c bitarray/_bitarray.c -o build\temp.win32-2.6\Release\bitarray\_bitarray.o bitarray/_bitarray.c:2197: error: initializer element is not constant bitarray/_bitarray.c:2197: error: (near initialization for `BitarrayIter_Type.tp_getattro') bitarray/_bitarray.c:2206: error: initializer element is not constant bitarray/_bitarray.c:2206: error: (near initialization for `BitarrayIter_Type.tp_iter') bitarray/_bitarray.c:2232: error: initializer element is not constant bitarray/_bitarray.c:2232: error: (near initialization for `Bitarraytype.tp_getattro') bitarray/_bitarray.c:2253: error: initializer element is not constant bitarray/_bitarray.c:2253: error: (near initialization for `Bitarraytype.tp_alloc') bitarray/_bitarray.c:2255: error: initializer element is not constant bitarray/_bitarray.c:2255: error: (near initialization for `Bitarraytype.tp_free') error: command 'gcc' failed with exit status 1 Can anyone help?

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  • SQL update query using joins

    - by Shyju
    I have to update a field with a value which is returned by a join of 3 tables. Example: select im.itemid ,im.sku as iSku ,gm.SKU as GSKU ,mm.ManufacturerId as ManuId ,mm.ManufacturerName ,im.mf_item_number ,mm.ManufacturerID from item_master im, group_master gm, Manufacturer_Master mm where im.mf_item_number like 'STA%' and im.sku=gm.sku and gm.ManufacturerID = mm.ManufacturerID and gm.manufacturerID=34 I want to update the mf_item_number field values of table master with some other value which is joined in the above condition. How to frame the SQL ?

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  • Convert a MSSQL database to MYSQL database

    - by soldieraman
    Alright so I want to convert an already exist MSSQL database (2005) to a MYSQL database. There is nothing extraordinary to be done The only things I need to achieve is Recreate the tables Transfer data Relationships would be nice but not necessary No views, no sprocs, no functions. Any easy way to do this. Also do you know of any DST (Database Synchronization Tool) which would let me do MSSQL to MYSQL MYSQL to MYSQL MSSQL to MSSQL (I know there is SQL Delta for this)

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  • OneToOne JPA / Hibernate eager loading cause N+1 select

    - by Alexandre Lavoie
    I created a method to have multilingual text on different objects without creating field for each languages or tables for each objects types. Now the only problem I've got is N+1 select queries when doing a simple loading. Tables schema : CREATE TABLE `testentities` ( `keyTestEntity` int(11) NOT NULL, `keyMultilingualText` int(11) NOT NULL, PRIMARY KEY (`keyTestEntity`) ) ENGINE=MyISAM AUTO_INCREMENT=0 DEFAULT CHARSET=utf8; CREATE TABLE `common_multilingualtexts` ( `keyMultilingualText` int(11) NOT NULL auto_increment, PRIMARY KEY (`keyMultilingualText`) ) ENGINE=MyISAM AUTO_INCREMENT=0 DEFAULT CHARSET=utf8; CREATE TABLE `common_multilingualtexts_values` ( `languageCode` varchar(5) NOT NULL, `keyMultilingualText` int(11) NOT NULL, `value` text, PRIMARY KEY (`languageCode`,`keyMultilingualText`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8; MultilingualText.java @Entity @Table(name = "common_multilingualtexts") public class MultilingualText implements Serializable { private Integer m_iKeyMultilingualText; private Map<String, String> m_lValues = new HashMap<String, String>(); public void setKeyMultilingualText(Integer p_iKeyMultilingualText) { m_iKeyMultilingualText = p_iKeyMultilingualText; } @Id @GeneratedValue @Column(name = "keyMultilingualText") public Integer getKeyMultilingualText() { return m_iKeyMultilingualText; } public void setValues(Map<String, String> p_lValues) { m_lValues = p_lValues; } @ElementCollection(fetch = FetchType.EAGER) @CollectionTable(name = "common_multilingualtexts_values", joinColumns = @JoinColumn(name = "keyMultilingualText")) @MapKeyColumn(name = "languageCode") @Column(name = "value") public Map<String, String> getValues() { return m_lValues; } public void put(String p_sLanguageCode, String p_sValue) { m_lValues.put(p_sLanguageCode,p_sValue); } public String get(String p_sLanguageCode) { if(m_lValues.containsKey(p_sLanguageCode)) { return m_lValues.get(p_sLanguageCode); } return null; } } And it is used like this on a object (having a foreign key to the multilingual text) : @Entity @Table(name = "testentities") public class TestEntity implements Serializable { private Integer m_iKeyEntity; private MultilingualText m_oText; public void setKeyEntity(Integer p_iKeyEntity) { m_iKeyEntity = p_iKeyEntity; } @Id @GeneratedValue @Column(name = "keyEntity") public Integer getKeyEntity() { return m_iKeyEntity; } public void setText(MultilingualText p_oText) { m_oText = p_oText; } @OneToOne(cascade = CascadeType.ALL) @JoinColumn(name = "keyText") public MultilingualText getText() { return m_oText; } } Now, when doing a simple HQL query : from TestEntity, I get a query selecting TestEntity's and one query for each MultilingualText that need to be loaded on each TestEntity. I've searched a lot and found absolutely no solutions. I have tested : @Fetch(FetchType.JOIN) optional = false @ManyToOne instead of @OneToOne Now I am out of idea!

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  • Style guide for database metadata naming

    - by Nulldevice
    We want to establish some database metadata naming rules in our new project. For example: tables are named as nouns in a plural form (courses, books, lessons) if present, an adjective goes before a noun in a table name and is separated by an underscore (red_books, new_lessons) table index column is always named "id" foreign key names are derived from a table name with suffix _id (book_id, red_book_id) so on Does someone know any guide like this?

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