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118 lines
3.6 KiB
ObjectPascal
118 lines
3.6 KiB
ObjectPascal
unit uDAOracleInterfaces;
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{----------------------------------------------------------------------------}
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{ Data Abstract Library - Core Library }
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{ }
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{ compiler: Delphi 6 and up, Kylix 3 and up }
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{ platform: Win32, Linux }
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{ }
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{ (c)opyright RemObjects Software. all rights reserved. }
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{ }
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{ Using this code requires a valid license of the Data Abstract }
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{ which can be obtained at http://www.remobjects.com. }
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{----------------------------------------------------------------------------}
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{$I DataAbstract.inc}
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interface
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uses
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uDAInterfaces, uDAEngine;
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type
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{ IDAOracleConnection
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For identification purposes Implemented by all Oracle connections }
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IDAOracleConnection = interface(IDAConnection)
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['{C7C88680-12BF-402A-8843-80016429BAC1}']
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end;
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IOracleConnection = IDAOracleConnection;
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TDAOracleLockMode = (olmNone, olmLockImmediate, olmLockDelayed);
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TDAOracleOption = (opAutoClose,
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opDefaultValues,
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opLongStrings,
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opQueryRecCount,
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opCacheLobs,
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opDeferredLobRead,
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opKeepPrepared);
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TDAOracleOptions = set of TDAOracleOption;
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{ IOracleDataset
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Provides access to features of ODAC mostly which might or might not be mappable
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to other drivers for Oracle. }
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IDAOracleDataset = interface
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['{D555E209-0ED7-40D4-B97B-7C2044453E70}']
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function GetLockMode: TDAOracleLockMode;
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procedure SetLockMode(Value: TDAOracleLockMode);
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function GetOptions: TDAOracleOptions;
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procedure SetOptions(Value: TDAOracleOptions);
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property LockMode: TDAOracleLockMode read GetLockMode write SetLockMode;
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property Options: TDAOracleOptions read GetOptions write SetOptions;
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end;
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IOracleDataset = IDAOracleDataset;
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TDAOracleDriver = class(TDAEDriver)
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protected
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function GetDefaultConnectionType(const AuxDriver: string): string; override; safecall;
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end;
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function Oracle_CreateMacroProcessor: TDASQLMacroProcessor;
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function Oracle_GetSPSelectSyntax(HasArguments: Boolean): String;
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function Oracle_DoGetLastAutoInc(const GeneratorName: string;Query: IDADataset): integer;
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function Oracle_GetNextAutoinc(const GeneratorName: string;Query: IDADataset): integer;
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const
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Oracle_DriverType = 'Oracle';
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implementation
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uses
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uDAMacroProcessors;
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function Oracle_CreateMacroProcessor: TDASQLMacroProcessor;
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begin
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Result := TDAOracleMacroProcessor.Create;
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end;
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function Oracle_GetSPSelectSyntax(HasArguments: Boolean): String;
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begin
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if HasArguments then
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Result := 'CALL {0}({1})'
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else
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Result := 'CALL {0}';
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end;
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function Oracle_DoGetLastAutoInc(const GeneratorName: string;Query: IDADataset): integer;
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begin
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try
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Query.SQL := 'SELECT ' + GeneratorName + '.Currval FROM dual';
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Query.Open;
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result := Query.Fields[0].Value;
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finally
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Query := nil;
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end;
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end;
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function Oracle_GetNextAutoinc(const GeneratorName: string;Query: IDADataset): integer;
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begin
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try
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Query.SQL := 'SELECT ' + GeneratorName + '.Nextval FROM dual';
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Query.Open;
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result := Query.Fields[0].Value;
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finally
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Query := nil;
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end;
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end;
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{ TDAOracleDriver }
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function TDAOracleDriver.GetDefaultConnectionType(
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const AuxDriver: string): string;
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begin
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Result := Oracle_DriverType;
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end;
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end.
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