Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / Microsoft / SqlServer / Server / SmiEventSink_Default.cs / 2 / SmiEventSink_Default.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //----------------------------------------------------------------------------- namespace Microsoft.SqlServer.Server { using System.Data.Sql; using System.Data.SqlClient; using System.Diagnostics; internal class SmiEventSink_Default : SmiEventSink { private SmiEventSink _parent; // next level up, which we'll defer to if we don't need to handle the event. private SqlErrorCollection _errors; private SqlErrorCollection _warnings; private SqlErrorCollection Errors { get { if ( null == _errors ) { _errors = new SqlErrorCollection( ); } return _errors; } } internal bool HasMessages { get { SmiEventSink_Default parent = (SmiEventSink_Default)_parent; if (null != parent) { return parent.HasMessages; } else { bool result = (null != _errors || null != _warnings); return result; } } } virtual internal string ServerVersion { get { return null; } } internal SmiEventSink Parent { get { return _parent; } set { _parent = value; } } private SqlErrorCollection Warnings { get { if ( null == _warnings ) { _warnings = new SqlErrorCollection( ); } return _warnings; } } protected virtual void DispatchMessages(bool ignoreNonFatalMessages) { // virtual because we want a default implementation in the cases // where we don't have a connection to process stuff, but we want to // provide the connection the ability to fire info messages when it // hooks up. SmiEventSink_Default parent = (SmiEventSink_Default)_parent; if (null != parent) { parent.DispatchMessages(ignoreNonFatalMessages); } else { SqlException errors = ProcessMessages(true, ignoreNonFatalMessages); // ignore warnings, because there's no place to send them... if (null != errors) { throw errors; } } } protected SqlException ProcessMessages(bool ignoreWarnings, bool ignoreNonFatalMessages) { SqlException result = null; SqlErrorCollection temp = null; // temp variable to store that which is being thrown - so that local copies can be deleted if ( null != _errors ) { Debug.Assert( 0 != _errors.Count, "empty error collection?" ); // must be something in the collection if (ignoreNonFatalMessages) { temp = new SqlErrorCollection(); foreach(SqlError error in _errors) { if (error.Class >= TdsEnums.FATAL_ERROR_CLASS){ temp.Add(error); } } if (temp.Count <= 0) { temp = null; } } else { if (null != _warnings ) { // When we throw an exception we place all the warnings that // occurred at the end of the collection - after all the errors. // That way the user can see all the errors AND warnings that // occurred for the exception. foreach ( SqlError warning in _warnings ) { _errors.Add( warning ); } } temp = _errors; } _errors = null; _warnings = null; } else { Debug.Assert( null == _warnings || 0 != _warnings.Count, "empty warning collection?" );// must be something in the collection if (!ignoreWarnings) { temp = _warnings; } _warnings = null; } if ( null != temp ) { result = SqlException.CreateException( temp, ServerVersion ); } return result; } internal void ProcessMessagesAndThrow() { ProcessMessagesAndThrow(false); } internal void ProcessMessagesAndThrow(bool ignoreNonFatalMessages) { if (HasMessages) { DispatchMessages(ignoreNonFatalMessages); } } internal enum UnexpectedEventType { BatchCompleted, ColumnInfoAvailable, DefaultDatabaseChanged, MessagePosted, MetaDataAvailable, ParameterAvailable, ParametersAvailable, RowAvailable, StatementCompleted, TableNameAvailable, TransactionCommitted, TransactionDefected, TransactionEnlisted, TransactionEnded, TransactionRolledBack, TransactionStarted, } internal SmiEventSink_Default () { } internal SmiEventSink_Default ( SmiEventSink parent ) { _parent = parent; } // NOTE: See the note in SmiEventSink about throwing from these methods; // We're throwing here because we don't want to miss something, but // you'll need to turn on Bid tracing to figure out what it is that // was thrown, because they will be eaten by the server and replaced // with a different exception. // Called at end of stream internal override void BatchCompleted( ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.BatchCompleted); } _parent.BatchCompleted(); } internal override void ParametersAvailable(SmiParameterMetaData[] metaData, ITypedGettersV3 paramValues) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.ParametersAvailable); } _parent.ParametersAvailable(metaData, paramValues); } internal override void ParameterAvailable(SmiParameterMetaData metaData, SmiTypedGetterSetter paramValue, int ordinal) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.ParameterAvailable); } _parent.ParameterAvailable(metaData, paramValue, ordinal); } // Called when the server database context changes (ENVCHANGE token) internal override void DefaultDatabaseChanged( string databaseName ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.DefaultDatabaseChanged); } _parent.DefaultDatabaseChanged( databaseName ); } // Called for messages and errors (ERROR and INFO tokens) internal override void MessagePosted ( int number, byte state, byte errorClass, string server, string message, string procedure, int lineNumber ) { if (null == _parent) { if (Bid.AdvancedOn) { Bid.Trace("%d#, number=%d state=%d errorClass=%d server='%ls' message='%ls' procedure='%ls' linenumber=%d.\n", 0, number, state, errorClass, (null != server) ? server : " ", (null != message) ? message : " ", (null != procedure) ? procedure : " ", lineNumber ); } SqlError error = new SqlError ( number, state, errorClass, server, message, procedure, lineNumber ); if ( error.Class < TdsEnums.MIN_ERROR_CLASS ) { Warnings.Add( error ); } else { Errors.Add( error ); } } else { _parent.MessagePosted( number, state, errorClass, server, message, procedure, lineNumber ); } } // Called for new resultset starting (COLMETADATA token) internal override void MetaDataAvailable( SmiQueryMetaData[] metaData, bool nextEventIsRow ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.MetaDataAvailable); } _parent.MetaDataAvailable( metaData, nextEventIsRow ); } // Called when a new row arrives (ROW token) internal override void RowAvailable( ITypedGetters rowData ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.RowAvailable); } _parent.RowAvailable( rowData ); } // Called when a new row arrives (ROW token) internal override void RowAvailable( ITypedGettersV3 rowData ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.RowAvailable); } _parent.RowAvailable( rowData ); } // Called when any statement completes on server (DONE token) internal override void StatementCompleted( int rowsAffected ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.StatementCompleted); } _parent.StatementCompleted( rowsAffected ); } // Called when a transaction is commited (ENVCHANGE token) internal override void TransactionCommitted( long transactionId ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.TransactionCommitted); } _parent.TransactionCommitted( transactionId ); } // Called when a transaction is commited (ENVCHANGE token) internal override void TransactionDefected( long transactionId ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.TransactionDefected); } _parent.TransactionDefected( transactionId ); } // Called when a transaction is commited (ENVCHANGE token) internal override void TransactionEnlisted( long transactionId ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.TransactionEnlisted); } _parent.TransactionEnlisted( transactionId ); } // Called when a transaction is forcibly ended in the server, not requested // by the provider's batch (ENVCHANGE token) internal override void TransactionEnded( long transactionId ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.TransactionEnded); } _parent.TransactionEnded( transactionId ); } // Called when a transaction is rolled back (ENVCHANGE token) internal override void TransactionRolledBack( long transactionId ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.TransactionRolledBack); } _parent.TransactionRolledBack( transactionId ); } // Called when a transaction is started (ENVCHANGE token) internal override void TransactionStarted( long transactionId ) { if (null == _parent) { throw SQL.UnexpectedSmiEvent(UnexpectedEventType.TransactionStarted); } _parent.TransactionStarted( transactionId ); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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