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tony |
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{************************************************************************}
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{ }
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{ Borland Delphi Visual Component Library }
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{ InterBase Express core components }
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{ }
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{ Copyright (c) 1998-2000 Inprise Corporation }
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{ }
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{ InterBase Express is based in part on the product }
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{ Free IB Components, written by Gregory H. Deatz for }
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
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{ Free IB Components is used under license. }
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{ }
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{ The contents of this file are subject to the InterBase }
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{ Public License Version 1.0 (the "License"); you may not }
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{ use this file except in compliance with the License. You }
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
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{ Software distributed under the License is distributed on }
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
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{ express or implied. See the License for the specific language }
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{ governing rights and limitations under the License. }
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{ The Original Code was created by InterBase Software Corporation }
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{ and its successors. }
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{ Portions created by Inprise Corporation are Copyright (C) Inprise }
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{ Corporation. All Rights Reserved. }
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{ Contributor(s): Jeff Overcash }
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{ }
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{************************************************************************}
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unit IB;
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interface
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uses
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Windows, SysUtils, Classes, IBHeader, IBExternals, IBUtils, DB, IBXConst;
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type
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TTraceFlag = (tfQPrepare, tfQExecute, tfQFetch, tfError, tfStmt, tfConnect,
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tfTransact, tfBlob, tfService, tfMisc);
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TTraceFlags = set of TTraceFlag;
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EIBError = class(EDatabaseError)
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private
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FSQLCode: Long;
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FIBErrorCode: Long;
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public
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constructor Create(ASQLCode: Long; Msg: string); overload;
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constructor Create(ASQLCode: Long; AIBErrorCode: Long; Msg: string); overload;
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property SQLCode: Long read FSQLCode;
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property IBErrorCode: Long read FIBErrorCode;
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end;
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EIBInterBaseError = class(EIBError);
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EIBClientError = class(EIBError);
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TIBDataBaseErrorMessage = (ShowSQLCode,
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ShowIBMessage,
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ShowSQLMessage);
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TIBDataBaseErrorMessages = set of TIBDataBaseErrorMessage;
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TIBClientError = (
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ibxeUnknownError,
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ibxeInterBaseMissing,
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ibxeInterBaseInstallMissing,
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ibxeIB60feature,
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ibxeNotSupported,
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ibxeNotPermitted,
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ibxeFileAccessError,
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ibxeConnectionTimeout,
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ibxeCannotSetDatabase,
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ibxeCannotSetTransaction,
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ibxeOperationCancelled,
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ibxeDPBConstantNotSupported,
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ibxeDPBConstantUnknown,
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ibxeTPBConstantNotSupported,
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ibxeTPBConstantUnknown,
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ibxeDatabaseClosed,
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ibxeDatabaseOpen,
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ibxeDatabaseNameMissing,
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ibxeNotInTransaction,
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ibxeInTransaction,
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ibxeTimeoutNegative,
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ibxeNoDatabasesInTransaction,
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ibxeUpdateWrongDB,
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ibxeUpdateWrongTR,
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ibxeDatabaseNotAssigned,
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ibxeTransactionNotAssigned,
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ibxeXSQLDAIndexOutOfRange,
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ibxeXSQLDANameDoesNotExist,
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ibxeEOF,
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ibxeBOF,
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ibxeInvalidStatementHandle,
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ibxeSQLOpen,
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ibxeSQLClosed,
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ibxeDatasetOpen,
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ibxeDatasetClosed,
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ibxeUnknownSQLDataType,
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ibxeInvalidColumnIndex,
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ibxeInvalidParamColumnIndex,
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ibxeInvalidDataConversion,
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ibxeColumnIsNotNullable,
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ibxeBlobCannotBeRead,
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ibxeBlobCannotBeWritten,
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ibxeEmptyQuery,
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ibxeCannotOpenNonSQLSelect,
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ibxeNoFieldAccess,
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ibxeFieldReadOnly,
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ibxeFieldNotFound,
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ibxeNotEditing,
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ibxeCannotInsert,
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ibxeCannotPost,
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ibxeCannotUpdate,
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ibxeCannotDelete,
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ibxeCannotRefresh,
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ibxeBufferNotSet,
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ibxeCircularReference,
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ibxeSQLParseError,
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ibxeUserAbort,
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ibxeDataSetUniDirectional,
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ibxeCannotCreateSharedResource,
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ibxeWindowsAPIError,
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ibxeColumnListsDontMatch,
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ibxeColumnTypesDontMatch,
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ibxeCantEndSharedTransaction,
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ibxeFieldUnsupportedType,
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ibxeCircularDataLink,
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ibxeEmptySQLStatement,
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ibxeIsASelectStatement,
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ibxeRequiredParamNotSet,
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ibxeNoStoredProcName,
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ibxeIsAExecuteProcedure,
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ibxeUpdateFailed,
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ibxeNotCachedUpdates,
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ibxeNotLiveRequest,
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ibxeNoProvider,
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ibxeNoRecordsAffected,
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ibxeNoTableName,
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ibxeCannotCreatePrimaryIndex,
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ibxeCannotDropSystemIndex,
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ibxeTableNameMismatch,
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ibxeIndexFieldMissing,
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ibxeInvalidCancellation,
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ibxeInvalidEvent,
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ibxeMaximumEvents,
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ibxeNoEventsRegistered,
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ibxeInvalidQueueing,
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ibxeInvalidRegistration,
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ibxeInvalidBatchMove,
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ibxeSQLDialectInvalid,
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ibxeSPBConstantNotSupported,
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ibxeSPBConstantUnknown,
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ibxeServiceActive,
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ibxeServiceInActive,
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ibxeServerNameMissing,
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ibxeQueryParamsError,
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ibxeStartParamsError,
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ibxeOutputParsingError,
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ibxeUseSpecificProcedures,
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ibxeSQLMonitorAlreadyPresent
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);
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TStatusVector = array[0..19] of ISC_STATUS;
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PStatusVector = ^TStatusVector;
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const
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IBPalette1 = 'InterBase'; {do not localize}
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IBPalette2 = 'InterBase Admin'; {do not localize}
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IBLocalBufferLength = 512;
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IBBigLocalBufferLength = IBLocalBufferLength * 2;
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IBHugeLocalBufferLength = IBBigLocalBufferLength * 20;
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IBErrorMessages: array[TIBClientError] of string = (
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SUnknownError,
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SInterBaseMissing,
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SInterBaseInstallMissing,
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SIB60feature,
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SNotSupported,
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SNotPermitted,
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SFileAccessError,
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SConnectionTimeout,
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SCannotSetDatabase,
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SCannotSetTransaction,
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SOperationCancelled,
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SDPBConstantNotSupported,
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SDPBConstantUnknown,
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STPBConstantNotSupported,
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STPBConstantUnknown,
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SDatabaseClosed,
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SDatabaseOpen,
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SDatabaseNameMissing,
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SNotInTransaction,
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SInTransaction,
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STimeoutNegative,
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SNoDatabasesInTransaction,
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SUpdateWrongDB,
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SUpdateWrongTR,
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SDatabaseNotAssigned,
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STransactionNotAssigned,
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SXSQLDAIndexOutOfRange,
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SXSQLDANameDoesNotExist,
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SEOF,
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SBOF,
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SInvalidStatementHandle,
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SSQLOpen,
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SSQLClosed,
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SDatasetOpen,
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SDatasetClosed,
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SUnknownSQLDataType,
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SInvalidColumnIndex,
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SInvalidParamColumnIndex,
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SInvalidDataConversion,
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SColumnIsNotNullable,
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SBlobCannotBeRead,
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SBlobCannotBeWritten,
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SEmptyQuery,
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SCannotOpenNonSQLSelect,
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SNoFieldAccess,
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SFieldReadOnly,
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SFieldNotFound,
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SNotEditing,
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SCannotInsert,
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SCannotPost,
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SCannotUpdate,
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SCannotDelete,
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SCannotRefresh,
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SBufferNotSet,
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SCircularReference,
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SSQLParseError,
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SUserAbort,
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SDataSetUniDirectional,
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SCannotCreateSharedResource,
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SWindowsAPIError,
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SColumnListsDontMatch,
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SColumnTypesDontMatch,
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SCantEndSharedTransaction,
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SFieldUnsupportedType,
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SCircularDataLink,
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SEmptySQLStatement,
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SIsASelectStatement,
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SRequiredParamNotSet,
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SNoStoredProcName,
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SIsAExecuteProcedure,
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SUpdateFailed,
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SNotCachedUpdates,
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SNotLiveRequest,
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SNoProvider,
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SNoRecordsAffected,
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SNoTableName,
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SCannotCreatePrimaryIndex,
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SCannotDropSystemIndex,
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STableNameMismatch,
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SIndexFieldMissing,
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SInvalidCancellation,
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SInvalidEvent,
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SMaximumEvents,
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SNoEventsRegistered,
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SInvalidQueueing,
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SInvalidRegistration,
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SInvalidBatchMove,
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SSQLDialectInvalid,
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SSPBConstantNotSupported,
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SSPBConstantUnknown,
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SServiceActive,
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SServiceInActive,
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SServerNameMissing,
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SQueryParamsError,
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SStartParamsError,
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SOutputParsingError,
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SUseSpecificProcedures,
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SSQLMonitorAlreadyPresent
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);
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var
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IBCS: TRTLCriticalSection;
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procedure IBAlloc(var P; OldSize, NewSize: Integer);
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procedure IBError(ErrMess: TIBClientError; const Args: array of const);
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procedure IBDataBaseError;
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function StatusVector: PISC_STATUS;
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function StatusVectorArray: PStatusVector;
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function CheckStatusVector(ErrorCodes: array of ISC_STATUS): Boolean;
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function StatusVectorAsText: string;
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procedure SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
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function GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
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implementation
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uses
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IBIntf;
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var
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IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
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threadvar
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FStatusVector : TStatusVector;
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procedure IBAlloc(var P; OldSize, NewSize: Integer);
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var
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i: Integer;
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begin
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ReallocMem(Pointer(P), NewSize);
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for i := OldSize to NewSize - 1 do PChar(P)[i] := #0;
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end;
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procedure IBError(ErrMess: TIBClientError; const Args: array of const);
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begin
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raise EIBClientError.Create(Ord(ErrMess),
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Format(IBErrorMessages[ErrMess], Args));
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end;
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procedure IBDataBaseError;
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var
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sqlcode: Long;
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IBErrorCode: Long;
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local_buffer: array[0..IBHugeLocalBufferLength - 1] of char;
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usr_msg: string;
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status_vector: PISC_STATUS;
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IBDataBaseErrorMessages: TIBDataBaseErrorMessages;
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begin
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usr_msg := '';
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{ Get a local reference to the status vector.
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Get a local copy of the IBDataBaseErrorMessages options.
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Get the SQL error code }
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status_vector := StatusVector;
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IBErrorCode := StatusVectorArray[1];
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IBDataBaseErrorMessages := GetIBDataBaseErrorMessages;
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sqlcode := isc_sqlcode(status_vector);
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if (ShowSQLCode in IBDataBaseErrorMessages) then
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usr_msg := usr_msg + 'SQLCODE: ' + IntToStr(sqlcode); {do not localize}
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Exclude(IBDataBaseErrorMessages, ShowSQLMessage);
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if (ShowSQLMessage in IBDataBaseErrorMessages) then
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begin
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isc_sql_interprete(sqlcode, local_buffer, IBLocalBufferLength);
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if (ShowSQLCode in IBDataBaseErrorMessages) then
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usr_msg := usr_msg + CRLF;
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usr_msg := usr_msg + string(local_buffer);
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end;
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if (ShowIBMessage in IBDataBaseErrorMessages) then
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begin
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if (ShowSQLCode in IBDataBaseErrorMessages) or
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(ShowSQLMessage in IBDataBaseErrorMessages) then
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usr_msg := usr_msg + CRLF;
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while (isc_interprete(local_buffer, @status_vector) > 0) do
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begin
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if (usr_msg <> '') and (usr_msg[Length(usr_msg)] <> LF) then
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usr_msg := usr_msg + CRLF;
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usr_msg := usr_msg + string(local_buffer);
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end;
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end;
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if (usr_msg <> '') and (usr_msg[Length(usr_msg)] = '.') then
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Delete(usr_msg, Length(usr_msg), 1);
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raise EIBInterBaseError.Create(sqlcode, IBErrorCode, usr_msg);
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end;
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359 |
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360 |
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{ Return the status vector for the current thread }
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361 |
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function StatusVector: PISC_STATUS;
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362 |
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begin
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result := @FStatusVector;
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364 |
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end;
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365 |
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366 |
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function StatusVectorArray: PStatusVector;
|
367 |
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begin
|
368 |
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result := @FStatusVector;
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end;
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370 |
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|
371 |
|
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function CheckStatusVector(ErrorCodes: array of ISC_STATUS): Boolean;
|
372 |
|
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var
|
373 |
|
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p: PISC_STATUS;
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374 |
|
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i: Integer;
|
375 |
|
|
procedure NextP(i: Integer);
|
376 |
|
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begin
|
377 |
|
|
p := PISC_STATUS(PChar(p) + (i * SizeOf(ISC_STATUS)));
|
378 |
|
|
end;
|
379 |
|
|
begin
|
380 |
|
|
p := @FStatusVector;
|
381 |
|
|
result := False;
|
382 |
|
|
while (p^ <> 0) and (not result) do
|
383 |
|
|
case p^ of
|
384 |
|
|
3: NextP(3);
|
385 |
|
|
1, 4:
|
386 |
|
|
begin
|
387 |
|
|
NextP(1);
|
388 |
|
|
i := 0;
|
389 |
|
|
while (i <= High(ErrorCodes)) and (not result) do
|
390 |
|
|
begin
|
391 |
|
|
result := p^ = ErrorCodes[i];
|
392 |
|
|
Inc(i);
|
393 |
|
|
end;
|
394 |
|
|
NextP(1);
|
395 |
|
|
end;
|
396 |
|
|
else
|
397 |
|
|
NextP(2);
|
398 |
|
|
end;
|
399 |
|
|
end;
|
400 |
|
|
|
401 |
|
|
function StatusVectorAsText: string;
|
402 |
|
|
var
|
403 |
|
|
p: PISC_STATUS;
|
404 |
|
|
function NextP(i: Integer): PISC_STATUS;
|
405 |
|
|
begin
|
406 |
|
|
p := PISC_STATUS(PChar(p) + (i * SizeOf(ISC_STATUS)));
|
407 |
|
|
result := p;
|
408 |
|
|
end;
|
409 |
|
|
begin
|
410 |
|
|
p := @FStatusVector;
|
411 |
|
|
result := '';
|
412 |
|
|
while (p^ <> 0) do
|
413 |
|
|
if (p^ = 3) then
|
414 |
|
|
begin
|
415 |
|
|
result := result + Format('%d %d %d', [p^, NextP(1)^, NextP(1)^]) + CRLF;
|
416 |
|
|
NextP(1);
|
417 |
|
|
end
|
418 |
|
|
else begin
|
419 |
|
|
result := result + Format('%d %d', [p^, NextP(1)^]) + CRLF;
|
420 |
|
|
NextP(1);
|
421 |
|
|
end;
|
422 |
|
|
end;
|
423 |
|
|
|
424 |
|
|
|
425 |
|
|
{ EIBError }
|
426 |
|
|
constructor EIBError.Create(ASQLCode: Long; Msg: string);
|
427 |
|
|
begin
|
428 |
|
|
inherited Create(Msg);
|
429 |
|
|
FSQLCode := ASQLCode;
|
430 |
|
|
end;
|
431 |
|
|
|
432 |
|
|
constructor EIBError.Create(ASQLCode: Long; AIBErrorCode: Long; Msg: string);
|
433 |
|
|
begin
|
434 |
|
|
inherited Create(Msg);
|
435 |
|
|
FSQLCode := ASQLCode;
|
436 |
|
|
FIBErrorCode := AIBErrorCode;
|
437 |
|
|
end;
|
438 |
|
|
|
439 |
|
|
procedure SetIBDataBaseErrorMessages(Value: TIBDataBaseErrorMessages);
|
440 |
|
|
begin
|
441 |
|
|
EnterCriticalSection(IBCS);
|
442 |
|
|
try
|
443 |
|
|
IBDataBaseErrorMessages := Value;
|
444 |
|
|
finally
|
445 |
|
|
LeaveCriticalSection(IBCS);
|
446 |
|
|
end;
|
447 |
|
|
end;
|
448 |
|
|
|
449 |
|
|
function GetIBDataBaseErrorMessages: TIBDataBaseErrorMessages;
|
450 |
|
|
begin
|
451 |
|
|
EnterCriticalSection(IBCS);
|
452 |
|
|
try
|
453 |
|
|
result := IBDataBaseErrorMessages;
|
454 |
|
|
finally
|
455 |
|
|
LeaveCriticalSection(IBCS);
|
456 |
|
|
end;
|
457 |
|
|
end;
|
458 |
|
|
|
459 |
|
|
initialization
|
460 |
|
|
IsMultiThread := True;
|
461 |
|
|
InitializeCriticalSection(IBCS);
|
462 |
|
|
IBDataBaseErrorMessages := [ShowSQLMessage, ShowIBMessage];
|
463 |
|
|
|
464 |
|
|
finalization
|
465 |
|
|
DeleteCriticalSection(IBCS);
|
466 |
|
|
|
467 |
|
|
end.
|