256 lines
10 KiB
VB.net
256 lines
10 KiB
VB.net
Imports DigitalData.Modules.Encryption
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Imports DigitalData.Modules.Logging
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Imports Oracle.ManagedDataAccess.Client
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Public Class Oracle
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Implements IDatabase
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Public Property DBInitialized As Boolean = False Implements IDatabase.DBInitialized
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Public Property CurrentConnectionString As String = "" Implements IDatabase.CurrentConnectionString
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Private ReadOnly _Timeout As Integer
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Private ReadOnly _Logger As Logger
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Public Sub New(LogConfig As LogConfig, ConnectionString As String, Optional Timeout As Integer = 120)
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_Timeout = Timeout
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_Logger = LogConfig.GetLogger()
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ConnectionString = ConnectionString
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DBInitialized = TestCanConnect(ConnectionString)
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End Sub
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Public Sub New(LogConfig As LogConfig, Server As String, Database As String, UserId As String, Password As String, Optional Timeout As Integer = 120)
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_Timeout = Timeout
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_Logger = LogConfig.GetLogger()
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CurrentConnectionString = GetConnectionString(Server, Database, UserId, Password)
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DBInitialized = TestCanConnect(CurrentConnectionString)
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End Sub
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Private Function TestCanConnect(ConnectionString As String) As Boolean
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Try
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Dim oSQLconnect As New OracleConnection
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oSQLconnect.ConnectionString = ConnectionString
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oSQLconnect.Open()
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oSQLconnect.Close()
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Return True
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Catch ex As Exception
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_Logger.Error(ex)
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Return False
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End Try
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End Function
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Public Shared Function GetConnectionString(Server As String, Database As String, UserId As String, Password As String) As String
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Dim oConnectionString = $"Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST={Server})(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME={Database})));User Id={UserId};Password={Password};"
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Return oConnectionString
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End Function
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''' <summary>
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''' Encrypts a connection string password.
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''' </summary>
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''' <param name="ConnectionString">A connection string with a plain-text password</param>
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''' <returns>The connection string with the password encrypted.</returns>
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<DebuggerStepThrough()>
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Public Shared Function EncryptConnectionString(ConnectionString As String) As String
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Dim oEncryption As New EncryptionLegacy()
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Dim oBuilder As New OracleConnectionStringBuilder() With {.ConnectionString = ConnectionString}
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Dim oEncryptedPassword = oEncryption.EncryptData(oBuilder.Password)
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oBuilder.Password = oEncryptedPassword
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Return oBuilder.ToString()
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End Function
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''' <summary>
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''' Decrypts a connection string password.
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''' </summary>
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''' <param name="ConnectionString">A connection string with a encrypted password</param>
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''' <returns>The connection string with the password decrypted.</returns>
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<DebuggerStepThrough()>
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Public Shared Function DecryptConnectionString(ConnectionString As String) As String
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Dim oEncryption As New EncryptionLegacy()
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Dim oBuilder As New OracleConnectionStringBuilder() With {.ConnectionString = ConnectionString}
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Dim oDecryptedPassword = oEncryption.DecryptData(oBuilder.Password)
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oBuilder.Password = oDecryptedPassword
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Return oBuilder.ToString()
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End Function
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''' <summary>
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''' Executes the passed sql-statement
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''' </summary>
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''' <param name="executeStatement">the sql statement</param>
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''' <returns>Returns true if properly executed, else false</returns>
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Public Function NewExecutenonQuery(executeStatement As String) As Boolean
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Try
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Dim oSQLconnect As New OracleConnection
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Dim oSQLCOmmand As OracleCommand
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oSQLconnect.ConnectionString = CurrentConnectionString
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oSQLconnect.Open()
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oSQLCOmmand = oSQLconnect.CreateCommand()
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oSQLCOmmand.CommandText = executeStatement
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oSQLCOmmand.CommandTimeout = _Timeout
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oSQLCOmmand.ExecuteNonQuery()
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oSQLCOmmand.Dispose()
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oSQLconnect.Close()
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Return True
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Catch ex As Exception
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_Logger.Error(ex)
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_Logger.Debug("executeStatement: " & executeStatement)
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Return False
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End Try
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End Function
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''' <summary>
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''' Executes the passed sql-statement as Scalar
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''' </summary>
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''' <param name="executeStatement">the sql statement</param>
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''' <returns>Returns the scalarvalue</returns>
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Public Function NewExecuteScalar(executeStatement As String)
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Dim result
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Try
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Dim oSQLconnect As New OracleConnection
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Dim oSQLCOmmand As OracleCommand
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oSQLconnect.ConnectionString = CurrentConnectionString
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oSQLconnect.Open()
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oSQLCOmmand = oSQLconnect.CreateCommand()
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oSQLCOmmand.CommandText = executeStatement
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oSQLCOmmand.CommandTimeout = _Timeout
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result = oSQLCOmmand.ExecuteScalar()
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oSQLCOmmand.Dispose()
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oSQLconnect.Close()
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Return result
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Catch ex As Exception
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_Logger.Error(ex)
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_Logger.Debug("executeStatement: " & executeStatement)
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Throw ex
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End Try
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End Function
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Public Function GetDatatable(pSQLCommand As String, Optional pTimeout As Integer = Constants.DEFAULT_TIMEOUT) As DataTable Implements IDatabase.GetDatatable
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Try
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Using oConnection = GetConnection(CurrentConnectionString)
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Dim oSQLCommand As OracleCommand
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oSQLCommand = oConnection.CreateCommand()
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oSQLCommand.CommandText = pSQLCommand
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oSQLCommand.CommandTimeout = pTimeout
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Dim oAdapter As OracleDataAdapter = New OracleDataAdapter(oSQLCommand)
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Dim oTable As DataTable = New DataTable()
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_Logger.Debug("GetDatatable: Running Query [{0}]", oSQLCommand)
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oAdapter.Fill(oTable)
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Return oTable
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End Using
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Catch ex As Exception
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_Logger.Error(ex)
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_Logger.Warn("GetDatatable: Error in GetDatatable while executing command: [{0}]", pSQLCommand)
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Return Nothing
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End Try
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End Function
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Public Function GetDatatable(SqlCommand As SqlClient.SqlCommand, Optional Timeout As Integer = 120) As DataTable Implements IDatabase.GetDatatable
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Throw New NotImplementedException()
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End Function
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Public Function ExecuteNonQuery(pSQLCommand As String, pTimeout As Integer) As Boolean Implements IDatabase.ExecuteNonQuery
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Try
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Using oConnection = GetConnection(CurrentConnectionString)
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Dim oSQLCOmmand As OracleCommand
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oSQLCOmmand = oConnection.CreateCommand()
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oSQLCOmmand.CommandText = pSQLCommand
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oSQLCOmmand.CommandTimeout = pTimeout
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_Logger.Debug("ExecuteNonQuery: Running Query [{0}]", oSQLCOmmand)
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oSQLCOmmand.ExecuteNonQuery()
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oSQLCOmmand.Dispose()
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Return True
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End Using
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Catch ex As Exception
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_Logger.Error(ex)
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_Logger.Warn("ExecuteNonQuery: Error in ExecuteNonQuery while executing command: [{0}]", pSQLCommand)
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Return False
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End Try
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End Function
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Public Function ExecuteNonQuery(pSQLCommand As String) As Boolean Implements IDatabase.ExecuteNonQuery
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Return ExecuteNonQuery(pSQLCommand, _Timeout)
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End Function
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Public Function GetScalarValue(pSQLCommand As String, pTimeout As Integer) As Object Implements IDatabase.GetScalarValue
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Dim result
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Try
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Using oConnection = GetConnection(CurrentConnectionString)
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Dim oSQLCOmmand As OracleCommand
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oSQLCOmmand = oConnection.CreateCommand()
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oSQLCOmmand.CommandText = pSQLCommand
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oSQLCOmmand.CommandTimeout = pTimeout
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_Logger.Debug("GetScalarValue: Running Query [{0}]", oSQLCOmmand)
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result = oSQLCOmmand.ExecuteScalar()
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Return result
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End Using
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Catch ex As Exception
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_Logger.Error(ex)
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_Logger.Warn("GetScalarValue: Error in GetScalarValue while executing command: [{0}]", pSQLCommand)
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Throw ex
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End Try
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End Function
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Public Function GetScalarValue(pSQLCommand As String) As Object Implements IDatabase.GetScalarValue
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Return GetScalarValue(pSQLCommand, _Timeout)
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End Function
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Private Function GetConnection(ConnectionString As String) As OracleConnection
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Try
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Dim oConnection As New OracleConnection(ConnectionString)
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oConnection = OpenSQLConnection(oConnection)
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Dim oMaskedConnectionString = MaskConnectionString(ConnectionString)
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_Logger.Debug("The Following Connection is open: {0}", oMaskedConnectionString)
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Return oConnection
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Catch ex As Exception
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_Logger.Error(ex)
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Return Nothing
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End Try
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End Function
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''' <summary>
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''' This Function intentionally has no try..catch block to have any errors caught outside
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''' </summary>
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''' <param name="Connection"></param>
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''' <returns></returns>
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Private Function OpenSQLConnection(Connection As OracleConnection) As OracleConnection
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If Connection.State = ConnectionState.Closed Then
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Connection.Open()
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End If
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Return Connection
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End Function
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<DebuggerStepThrough()>
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Private Function MaskConnectionString(ConnectionString As String) As String
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Try
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If ConnectionString Is Nothing OrElse ConnectionString.Length = 0 Then
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Throw New ArgumentNullException("ConnectionString")
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End If
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Dim oBuilder As New OracleConnectionStringBuilder() With {.ConnectionString = ConnectionString}
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Dim oConnectionString = ConnectionString.Replace(oBuilder.Password, "XXXXX")
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Return oConnectionString
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Catch ex As Exception
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_Logger.Error(ex)
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Return "Invalid ConnectionString"
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End Try
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End Function
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End Class
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