Business objects use this class to connect to a data service.
This is an abstract class that is not meant to be used directly.
Instead, the DataServiceFactory class will instantiate a subclass
of this class, depending on the actual configuration of the factory.
Individual subclasses could connect to different data sources in different
ways, such as a direct connection to SQL Server, or a connection
to a web service, and the like.

System.Object
  EPS.Data.DataService

public abstract class DataService : object, IDataService,
   IDisposable,
   IStoredProcedureFacadeService

Class Members

Member	Description
NonQueryComplete	This event fires whenever a non-query database command has been completed
QueryComplete	This event fires whenever a query has been completed
ScalarQueryComplete	This event fires whenever a scalar query has been completed
AbortTransaction	Abstract implementation public abstract bool AbortTransaction();
ApplyAppRole	Abstract implementation public abstract bool ApplyAppRole( string role, string password );
BeginTransaction	Abstract implementation public abstract bool BeginTransaction();
BuildAllRecordsQueryCommand	Builds a command object that queries all records (with specified fields) from the specified table. public abstract IDbCommand BuildAllRecordsQueryCommand( string tableName, string fieldList, string orderBy, DataRowProcessMethod selectMethod );
BuildDeleteCommand	Creates a delete command object for the defined table and primary key. public abstract IDbCommand BuildDeleteCommand( string tableName, string primaryKeyFieldName, object primaryKeyValue, DataRowProcessMethod updateMethod );
BuildEmptyRecordQueryCommand	Builds a command object that queries an empty record containing all fields of the specified table. public abstract IDbCommand BuildEmptyRecordQueryCommand( string tableName, string fieldList, DataRowProcessMethod selectMethod );
BuildSingleRecordQueryCommand	Returns a single record (with a specified list of fields) by primary key. public abstract IDbCommand BuildSingleRecordQueryCommand( string tableName, string fieldList, string primaryKeyFieldName, object primaryKeyValue, DataRowProcessMethod selectMethod );
BuildUpdateCommand	Creates an update command object for the row passed along. public abstract IDbCommand BuildUpdateCommand( DataRow changedRow, KeyType primaryKeyType, string primaryKeyFieldName, DataRowUpdateMode updateMode, DataRowProcessMethod updateMethod );
CommitTransaction	Abstract implementation public abstract bool CommitTransaction();
Dispose	Implementation of IDisposable, in particular the Dispose() method public sealed void Dispose();
ExecuteNonQuery	Abstract implementation public abstract int ExecuteNonQuery( IDbCommand command ); public sealed bool ExecuteNonQuery( IDbCommand command, int expectedRecordCount );
ExecuteNonQueryAsync	Abstract implementation public virtual void ExecuteNonQueryAsync( IDbCommand command, AsyncCallback callback );
ExecuteQuery	Abstract implementation public abstract DataSet ExecuteQuery( IDbCommand command, string entityName ); public abstract DataSet ExecuteQuery( IDbCommand command, string entityName, DataSet existingDataSet );
ExecuteQueryAsync	Abstract implementation public virtual void ExecuteQueryAsync( IDbCommand command, string entityName, DataSet existingDataSet, AsyncCallback callback );
ExecuteScalar	Abstract implementation public abstract object ExecuteScalar( IDbCommand command );
ExecuteScalarAsync	Abstract implementation public virtual void ExecuteScalarAsync( IDbCommand command, AsyncCallback callback );
ExecuteStoredProcedure	Executes a stored procedure public abstract bool ExecuteStoredProcedure( IDbCommand command );
ExecuteStoredProcedureQuery	Executes a stored procedure and returns the result in a DataSet public abstract DataSet ExecuteStoredProcedureQuery( IDbCommand command, string entityName ); public abstract DataSet ExecuteStoredProcedureQuery( IDbCommand command, string entityName, DataSet existingDataSet );
GetCommandParameterValue	Generically returns the value of the specified parameter in a public abstract object GetCommandParameterValue( string parameterName, IDbCommand command );
IsValid	Abstract implementation public abstract bool IsValid();
NewCommandObject	Returns an instance of an object that implements IDbCommand. public abstract IDbCommand NewCommandObject();
NewCommandObjectParameter	Returns an instance of a parameter object that can be added public abstract IDbDataParameter NewCommandObjectParameter( string parameterName, object parameterValue );
RevertAppRole	Reverts to a previous app role. This is typically done after an public abstract bool RevertAppRole();
SetConfigurationPrefix	This method sets the prefix used in this configuration public virtual void SetConfigurationPrefix( string prefix );
ConnectionStatus	Connection status (online, offline,...)
DateMaxValue	Maximum date value supported by this data source
DateMinValue	Minimum date value supported by this data source
InvalidStatus	This property provides additional information why the status may be invalid.
ServiceInstanceIdentifier	Returns an identifier string that allows the developer to compare two different
StoredProcedureFacade	Reference to a stored procedure facade
TransactionStatus	Indicates the current transaction status.

Requirements

Namespace: EPS.Data
Assembly: DATA.DLL