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FIBQuery.pas
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FIBQuery.pas
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{***************************************************************}
{ FIBPlus - component library for direct access to Firebird and }
{ InterBase databases }
{ }
{ FIBPlus is based in part on the product }
{ Free IB Components, written by Gregory H. Deatz for }
{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
{ mailto:gdeatz@hlmdd.com }
{ }
{ Copyright (c) 1998-2013 Devrace Ltd. }
{ Written by Serge Buzadzhy (buzz@devrace.com) }
{ }
{ ------------------------------------------------------------- }
{ FIBPlus home page: http://www.fibplus.com/ }
{ FIBPlus support : http://www.devrace.com/support/ }
{ ------------------------------------------------------------- }
{ }
{ Please see the file License.txt for full license information }
{***************************************************************}
unit FIBQuery;
interface
{$I FIBPlus.inc}
uses
SysUtils, Classes, ibase,IB_Intf, IB_Externals,FIBPlatforms,
DB, fib, FIBDatabase, StdFuncs,IB_ErrorCodes,SqlTxtRtns,pFIBProps,
pFIBInterfaces {, FIBXMLDataSetReader}
{$IFDEF SUPPORT_ARRAY_FIELD}, pFIBArray {$ENDIF}
{$IFDEF D6+},FMTBcd, Variants{$ENDIF} ;
type
(*Stream Events*)
TCallBackBlobReadWrite= procedure(BlobSize:integer; BytesProcessing:integer; var Stop:boolean) of object;
TFIBQuery = class;
TFIBXSQLDA = class;
TFIBXSQLVAR = class;
TExtDescribeSQLVar =
record
sql_relation_alias: array[0..LENGTH_METANAMES-1] of AnsiChar;
end;
TTypeSetToParam =(tspNull,tspIsNullable,tspScale, tspValue,tspSqlVar);
(* TFIBXSQLVAR *)
TFIBXSQLVAR = class(TObject)
private
function GetAsBoolean: boolean;
procedure SetAsBoolean(const Value: boolean);
protected
FIndex: Integer;
FModified: Boolean;
FName: string;
FQuery: TFIBQuery;
FVariantFalse,
FVariantTrue: Variant;
FXSQLVAR: PXSQLVAR; // Point to the PXSQLVAR in the owner object
FParent : TFIBXSQLDA;
// Added variables
FIsMacro :boolean;
FQuoted :boolean;
FOldValue:Variant; // Value Param from last ExecQuery
FDefMacroValue :string;
FSrvSQLType :integer;
FSrvSQLSubType :integer;
FSrvSQLLen :Smallint;
FSrvSQLScale :Smallint;
FInWhereClause :boolean;
FCanForceIsNull:boolean;
FInitialized :boolean;
FBeginPosInText:integer;
FEndPosInText :integer;
FIsDefferedSetting:boolean;
FStreamValue :TMemoryStream;
FWideTempValue :WideString;
FParDataIsPrepared:boolean;
{$IFDEF SUPPORT_ARRAY_FIELD}
vFIBArray:TpFIBArray;
{$ENDIF}
function GetAsInt64: Int64;
function GetAsCurrency: Currency;
{$IFNDEF NO_USE_COMP}
function GetAsComp: Comp;
{$ENDIF}
function GetAsDateTime: TDateTime;
function GetAsTimeStamp: TTimeStamp;
function GetAsDouble: Double;
function GetAsFloat: Double;
function GetAsSingle: Float;
function GetAsLong: Long;
function GetAsPointer: Pointer;
function GetAsQuad: TISC_QUAD;
function GetAsShort: Short;
function GetAsString: string;
function GetAsAnsiString: Ansistring;
function GetAsVariant: Variant;
function GetAsExtended: Extended;
function GetAsXSQLVAR: PXSQLVAR;
function GetIsNull: Boolean;
function GetIsNullable: Boolean;
function GetSize: Integer;
function GetSQLType: Integer;
function GetServerSQLType:Integer;
function GetSQLSubtype: Short;
function GetServerSQLSubType:Integer;
function GetServerSQLSize:Integer;
function GetServerSQLScale:Integer;
// Array Support
{$IFDEF SUPPORT_ARRAY_FIELD}
procedure CheckArrayType;
function GetDimensionCount:Integer;
function GetDimension(Index: Integer): TISC_ARRAY_BOUND;
function GetSliceSize:integer;
function GetElementType:TFieldType;
function GetArraySize:integer;
{$ENDIF}
//
procedure SetValue(aSQLType,aSize:integer;ValueType:TTypeSetToParam;const aValue;ws:PWideString=nil);
procedure SetAsCurrency(aValue: Currency);
{$IFNDEF NO_USE_COMP}
procedure SetAsComp(aValue: comp); //patchInt64A
{$ENDIF}
procedure SetAsInt64(aValue: Int64);
procedure SetAsDateTime(aValue: TDateTime);
procedure SetAsTime(aValue: TDateTime);
procedure SetAsDate(aValue: TDateTime);
procedure SetAsTimeStamp(aValue: TTimeStamp);
procedure SetAsDouble(aValue: Double);
procedure SetAsFloat(aValue: Double);
procedure SetAsSingle(aValue: Float);
procedure SetAsExtended(aValue: Extended);
procedure SetAsLong(aValue: Long);
procedure SetAsQuad(aValue: TISC_QUAD);
procedure SetAsShort(aValue: Short);
procedure InternalSetAsString(aValue:Pointer; IsWide:boolean; AdjustDeffered:boolean=False);
procedure SetAsString(const aValue: string);
procedure SetAsWideString(const aValue: WideString);
procedure SetAsAnsiString(const aValue: Ansistring);
procedure SetAsStrData(Len:Integer;const aValue);
function GetAsWideString:WideString;
procedure SetAsVariant(Value: Variant);
procedure SetAsXSQLVAR(aValue: PXSQLVAR);
procedure SetIsNull(aValue: Boolean);
procedure SetIsNullable(aValue: Boolean);
function GetScale: integer;
procedure SetScale(Value: integer);
function GetAsBcd: TBcd;
procedure SetAsBcd(Value: TBcd);
function GetAsGUID: TGUID;
procedure SetAsGuid(aValue: TGUID);
procedure SetSQLLen(A:SmallInt);
public
constructor Create(AParent: TFIBXSQLDA);
destructor Destroy; override;
procedure Assign(Source: TFIBXSQLVAR);
// procedure SetSQLLen(A:SmallInt);
function IsNumericType(SQLType:Integer):boolean;
function IsRealType(SQLType:Integer):boolean;
function IsDateTimeType(SQLType:Integer):boolean;
procedure LoadFromFile(const FileName: string); overload;
procedure LoadFromFile(const FileName: string;cb: TCallBackBlobReadWrite); overload;
procedure LoadFromStream(Stream: TStream);
procedure SaveToFile(const FileName: string;cb: TCallBackBlobReadWrite=nil);
procedure SaveToFileStream(const FileName: string);
procedure SaveToStream(Stream: TStream);
procedure Clear;
function IsParam:boolean;
function IsBlob:boolean;
function SqlName:string;
function AliasName:string;
function RelationName:string;
function CharacterSet :string;
// Array Support
{$IFDEF SUPPORT_ARRAY_FIELD}
function IsArray:boolean;
function GetArrayElement(Indexes: array of Integer):Variant;
function GetArrayValues:Variant;
procedure SetArrayValue(Value:Variant);
{$ENDIF}
function IsDefMacroValue :boolean;
procedure SetDefMacroValue;
//
property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
{$IFNDEF NO_USE_COMP}
property AsComp: comp read GetAsComp write SetAsComp;
{$ENDIF}
property AsExtended: Extended read GetAsExtended write SetAsExtended;
property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
property AsBcd: TBcd read GetAsBcd write SetAsBcd;
property AsGuid:TGUID read GetAsGUID write SetAsGUID ;
property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
property AsDate: TDateTime read GetAsDateTime write SetAsDate;
property AsTime: TDateTime read GetAsDateTime write SetAsTime;
property AsTimeStamp:TTimeStamp read GetAsTimeStamp write SetAsTimeStamp;
property AsDouble: Double read GetAsDouble write SetAsDouble;
property AsFloat: Double read GetAsFloat write SetAsFloat;
property AsSingle: Float read GetAsSingle write SetAsSingle;
property AsInteger: Integer read GetAsLong write SetAsLong;
property AsLong: Long read GetAsLong write SetAsLong;
property AsPointer: Pointer read GetAsPointer ;
property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
property AsShort: Short read GetAsShort write SetAsShort;
property AsString: string read GetAsString write SetAsString;
property AsWideString: WideString read GetAsWideString write SetAsWideString;
property AsAnsiString: AnsiString read GetAsAnsiString write SetAsAnsiString;
property AsVariant: Variant read GetAsVariant write SetAsVariant;
property AsXSQLVAR: PXSQLVAR read GetAsXSQLVAR write SetAsXSQLVAR;
property AsBoolean: boolean read GetAsBoolean write SetAsBoolean;
property Data: PXSQLVAR read FXSQLVAR write FXSQLVAR;
property IsNull: Boolean read GetIsNull write SetIsNull;
property IsNullable: Boolean read GetIsNullable write SetIsNullable;
property Scale: Integer read GetScale write SetScale;
property Index: Integer read FIndex;
property Modified: Boolean read FModified write FModified;
property Name: string read FName;
property Size: Integer read GetSize;
property ServerSize: Integer read GetServerSQLSize;
property SQLType: Integer read GetSQLType;
property ServerSQLType: Integer read GetServerSQLType;
property SQLSubtype:Short read GetSQLSubtype;
property ServerSQLSubType: Integer read GetServerSQLSubType;
property Value: Variant read GetAsVariant write SetAsVariant;
property OldValue: Variant read FOldValue;
property VariantFalse: Variant read FVariantFalse write FVariantFalse;
property VariantTrue: Variant read FVariantTrue write FVariantTrue;
// Added properties
property IsMacro:boolean read FIsMacro write FIsMacro;
property Quoted :boolean read FQuoted write FQuoted;
property DefMacroValue:string read FDefMacroValue write FDefMacroValue;
property InWhereClause:boolean read FInWhereClause;
property BeginPosInText:integer read FBeginPosInText;
property EndPosInText :integer read FEndPosInText;
// Array Support
{$IFDEF SUPPORT_ARRAY_FIELD}
property FIBArray:TpFIBArray read vFIBArray;
property DimensionCount:integer read GetDimensionCount;
property Dimension[Index: Integer]: TISC_ARRAY_BOUND read GetDimension;
property ElementType:TFieldType read GetElementType;
property ArraySize:Integer read GetArraySize;
{$ENDIF}
end;
TFIBXSQLVARArray = array[0..0] of TFIBXSQLVAR;
PFIBXSQLVARArray = ^TFIBXSQLVARArray;
(* TFIBXSQLVAR *)
TFIBXSQLDA = class(TObject)
private
FEquelNames: TStringList;
FCachedNames:TStringList;
FCount: Integer;
FHasDefferedSettings:Boolean;
procedure AdjustDefferedSettings;
protected
FNames : TStringList;
FQuery: TFIBQuery;
FSize: Integer;
FXSQLDA: PXSQLDA;
FXSQLVARs: PFIBXSQLVARArray; // array of FIBXQLVARs
FIsParams: boolean;
function GetModified: Boolean;
function GetNames: string;
function GetRecordSize: Integer;
function GetXSQLDA: PXSQLDA;
function GetXSQLVAR(Idx: Integer): TFIBXSQLVAR;
function GetXSQLVARByName(const Idx: string): TFIBXSQLVAR;
procedure Initialize;
procedure SetCount(Value: Integer);
procedure AddName(const FieldName: string; Idx: Integer; aQuoted:boolean);
procedure SetUnModifiedToVars;
public
constructor Create(aIsParams:boolean);
destructor Destroy; override;
procedure ClearValues;
function FindParam(const aParamName: string): TFIBXSQLVAR;
function ParamByName(const aParamName: string): TFIBXSQLVAR;
procedure AssignValues(SourceSQLDA:TFIBXSQLDA);
property Query: TFIBQuery read FQuery;
property AsXSQLDA: PXSQLDA read GetXSQLDA;
property ByName[const Idx: string]: TFIBXSQLVAR read GetXSQLVARByName;
property Count: Integer read FCount write SetCount;
property Modified: Boolean read GetModified;
property Names: string read GetNames;
property RecordSize: Integer read GetRecordSize;
property Vars[Idx: Integer]: TFIBXSQLVAR read GetXSQLVAR; default;
end;
(* TFIBBatch - basis for batch input and batch output objects. *)
TBatchState = (bsNotPrepared,bsFileReady,bsInProcess,bsInError);
TFIBBatch = class(TObject)
protected
FFilename: string;
FColumns: TFIBXSQLDA;
FParams : TFIBXSQLDA;
FState : TBatchState;
FVersion: integer;
FCharset:Ansistring;
public
constructor Create;
procedure ReadyStream; virtual; abstract;
property Columns: TFIBXSQLDA read FColumns;
property Filename: string read FFilename write FFilename;
property Params: TFIBXSQLDA read FParams;
property State : TBatchState read FState ;
end;
(* TFIBBatchInputStream - see FIBMiscellaneous for good examples. *)
TFIBBatchInputStream = class(TFIBBatch)
public
function ReadParameters: Boolean; virtual; abstract;
end;
TFIBBatchInputStreamClass = class of TFIBBatchInputStream;
(* TFIBBatchOutputStream - see FIBMiscellaneous for good examples. *)
TFIBBatchOutputStream = class(TFIBBatch)
protected
public
function WriteColumns: Boolean; virtual; abstract;
end;
TFIBBatchOutputStreamClass = class of TFIBBatchOutputStream;
(* TFIBQuery *)
TFIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
SQLUpdate, SQLDelete, SQLDDL,
SQLGetSegment, SQLPutSegment,
SQLExecProcedure, SQLStartTransaction,
SQLCommit, SQLRollback,
SQLSelectForUpdate, SQLSetGenerator,SQLSavePointOperation
);
TOnSQLFetch =procedure (RecordNumber:integer; var StopFetching:boolean
) of object;
TBatchOperation =(boInput,boOutput,boOutputToQuery);
TBatchAction =(baContinue,baStop,baSkip);
TBatchErrorAction =(beFail, beAbort, beRetry,beIgnore);
TOnBatching =
procedure(BatchOperation:TBatchOperation;RecNumber:integer;var BatchAction :TBatchAction) of object;
TOnBatchError = procedure(E:EFIBError;var BatchErrorAction:TBatchErrorAction) of object;
{
TOnBatchXMLFile =
procedure (Reader:TXMLDataSetFileReader; const CurRec:TRecordDesc; const RecordNo:integer; var Stop:boolean) of object;
}
TAllRowsAffected =
record
Updates: integer;
Deletes: integer;
Selects: integer;
Inserts: integer;
end;
TQueryRunStateValues=(qrsInPrepare,qrsInExecute,qrsInClose);
TQueryRunState = set of TQueryRunStateValues;
TFIBQuery = class(TComponent,ISQLObject,IFIBQuery)
private
FOnBatching:TOnBatching;
FDoParamCheck:boolean;
FParser: TSQLParser;
FTransactionEnding:TNotifyEvent;
FTransactionEnded :TNotifyEvent;
FBeforeExecute :TNotifyEvent;
FAfterExecute :TNotifyEvent;
FAfterFirstFetch :TNotifyEvent;
{$IFDEF CSMonitor}
FCSMonitorSupport: TCSMonitorSupport;
procedure SetMonitorSupport(Value:TCSMonitorSupport);
function GetCSMonText: string;
{$ENDIF}
function GetSQLKind: TSQLKind;
protected
FBase: TFIBBase;
FBOF, // At BOF?
FEof, // At EOF
FGoToFirstRecordOnExecute, // Automatically position record on first record after executing
FOpen, // Is a cursor open?
FPrepared: Boolean; // Has the query been prepared?
FRecordCount: Integer; // How many records have been read so far?
FHandle: TISC_STMT_HANDLE; // Once prepared, this accesses the SQL Query
FOnSQLChanging: TNotifyEvent; // Call this when the SQL is changing.
FSQL: TStrings; // SQL Query (by user)
FParamCheck: Boolean; // Check for parameters? (just like TQuery)
FProcessedSQL: string; // SQL Query (pre-processed for param labels)
FPreparedSQL :AnsiString;
FSQLParams, // Any parameters to the query.
FSQLRecord: TFIBXSQLDA; // The current record
FSQLType: TFIBSQLTypes; // Select, update, delete, insert, create, alter, etc...
FUserSQLParams:TFIBXSQLDA;
FProcExecuted:boolean;
FOnSQLFetch:TOnSQLFetch;
FMacroChar :Char;
vUserParamsCreated:boolean;
FCountLockSQL:integer;
FModifyTable:string;
FOptions:TpFIBQueryOptions;
vDiffParams:boolean;
FOnlySrvParams :TStringList;
FCallTime :Cardinal;
FHaveMacros:boolean;
FNeedForceIsNull:boolean;
FMacroChanged:boolean;
FSQLTextChangeCount:integer;
FHaveStreamParams:boolean;
FQueryRunState:TQueryRunState;
FCodePageApplied:boolean;
FAutoCloseOnTransactionEnd:boolean;
vFetched:boolean;
{$DEFINE FIB_INTERFACE}
{$I FIBQueryPT.inc}
{$UNDEF FIB_INTERFACE}
procedure SaveStreamedParams(toParams:TFIBXSQLDA);
procedure ClearStreamedParams;
procedure SetParamCheck(Value:boolean);
function GetModifyTable:string;
procedure DatabaseDisconnecting(Sender: TObject);
function GetDatabase: TFIBDatabase;
function GetDBHandle: PISC_DB_HANDLE;
function GetEOF: Boolean;
function GetFields(const Idx: Integer): TFIBXSQLVAR;
function GetFieldIndex(const FieldName: string): Integer;
function GetPlan: string;
function GetRecordCount: Integer;
function GetRowsAffected: Integer;
function GetAllRowsAffected: TAllRowsAffected ;
function GetSQLParams: TFIBXSQLDA;
function GetTransaction: TFIBTransaction;
function GetTRHandle: PISC_TR_HANDLE;
procedure SetDatabase(Value: TFIBDatabase); virtual;
procedure SetSQL(Value: TStrings);
procedure SetMacroChar(Value:Char);
procedure SetTransaction(Value: TFIBTransaction);
procedure SQLChanging(Sender: TObject);
procedure SQLChange(Sender: TObject);
procedure DoTransactionEnding(Sender: TObject);
// Added procedures
procedure SaveRestoreValues(SQLDA:TFIBXSQLDA;IsSave:boolean);
function GetWhereClause(Index:Integer):string;
procedure SetWhereClause(Index:Integer;const WhereClauseTxt:string);
function GetOrderString:string;
procedure SetOrderString(const OrderTxt:string);
function GetGroupByString:string;
procedure SetGroupByString(const GroupByTxt:string);
function GetFieldsClause:string;
procedure SetFieldsClause(const NewFields:string);
procedure PrepareUserParamsTypes;
procedure StartStatisticExec(const stText:string);
procedure EndStatisticExec(const stText:string);
procedure DoStatisticPrepare(const stText:string);
function ParamsNotExist(const SQLText:string):boolean;
procedure PreprocessSQL(const sSQL:String;IsUserSQL:boolean);
procedure DoBeforeExecute;
procedure DoAfterExecute;
procedure DoAfterFirstFetch;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Loaded; override;
property Handle: TISC_STMT_HANDLE read FHandle;
property QueryRunState:TQueryRunState read FQueryRunState;
private
FExtSQLDA:array of TExtDescribeSQLVar;
procedure FillExtDescribeSQLVars;
procedure ConvertSQLTextToCodePage;
public
function TableAliasForField(FieldIndex:integer):string; overload;
function TableAliasForFieldByName(const aFieldName:string):string;
//{$IFNDEF BCB}
function TableAliasForField(const aFieldName:string):string; overload;
// {$ENDIF}
private
FOnBatchError :TOnBatchError ;
FCursorName :string;
// FOnApplyXMLFile:TOnBatchXMLFile;
// FOnApplyXMLError:TOnBatchError;
// procedure ReadXmlFile(Reader:TXMLDataSetFileReader; const CurRec:TRecordDesc; const RecordNo:integer; var Stop:boolean);
public
function BatchInput(InputObject: TFIBBatchInputStream) :boolean;
function BatchOutput(OutputObject: TFIBBatchOutputStream):boolean;
procedure BatchInputRawFile(const FileName:Ansistring);
procedure BatchOutputRawFile(const FileName:Ansistring;Version:integer=3);
procedure BatchToQuery(ToQuery:TFIBQuery;Mappings:TStrings);
// procedure BatchXmlFile(const aFileName:string);
public
function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
procedure CheckClosed(const OpName:Ansistring);// raise error if query is not closed.
procedure CheckOpen(const OpName:Ansistring); // raise error if query is not open.
procedure CheckValidStatement; // raise error if statement is invalid.
procedure Close; // close the query.
function Current: TFIBXSQLDA;
procedure ExecQuery; virtual; // ExecQuery the query.
procedure ExecuteImmediate;
// procedure CancelQuery; // Only For IB
{$IFDEF SUPPORT_IB2007}
procedure ExecuteAsBatch; overload;
procedure ExecuteAsBatch(const SQLs:array of Ansistring); overload;
{$ENDIF}
procedure FreeHandle;
function Next: TFIBXSQLDA;
procedure Prepare; // Prepare the query.
function FieldByName(const FieldName: string): TFIBXSQLVAR;
function FindField(const FieldName: string): TFIBXSQLVAR;
function FN(const FieldName: string): TFIBXSQLVAR;
function FieldByOrigin(const TableName,FieldName:string):TFIBXSQLVAR; overload;
function SQLFieldName(const aFieldName:string):string;
{$IFDEF SUPPORT_ARRAY_FIELD}
procedure PrepareArrayFields;
procedure PrepareArraySqlVar(
SqlVar:TFIBXSQLVAR;const RelName,aSQLName:string; IsField:boolean
);
{$ENDIF}
procedure SetParamValues(const ParamValues: array of Variant); overload;
procedure SetParamValues(const ParamNames: string;ParamValues: array of Variant); overload;
procedure ExecWP(const ParamValues: array of Variant); overload;
procedure ExecWP(const ParamNames: string;ParamValues: array of Variant); overload;
// Exec Query with ParamValues
procedure ExecWPS(const ParamSources: array of ISQLObject); overload;
procedure ExecWPS(ParamSource:ISQLObject; AllRecords:boolean=True); overload;
procedure BeginModifySQLText;
procedure EndModifySQLText;
function CountModifySQLText:integer;
function GetMainWhereIndex:integer;
function GetMainWhereClause :string;
procedure SetMainWhereClause (const Value:string);
function IsProc :boolean;
function ParamByName(const ParamName:string): TFIBXSQLVAR;
function FindParam (const aParamName: string): TFIBXSQLVAR;
procedure ApplyMacro;
procedure RestoreMacroDefaultValues;
function FieldCount:integer;
function SQLDescribeInfo(InfoRequest:array of AnsiChar):PXSQLDA;
property Bof: Boolean read FBOF;
property DBHandle: PISC_DB_HANDLE read GetDBHandle;
property Eof: Boolean read GetEOF;
property FldByName[const FieldName: string]: TFIBXSQLVAR read FieldByName; default;
property Fields[const Idx: Integer]: TFIBXSQLVAR read GetFields;
property FieldIndex[const FieldName: string]: Integer read GetFieldIndex;
property Open: Boolean read FOpen;
property Params: TFIBXSQLDA read GetSQLParams;
property Plan: string read GetPlan;
property Prepared: Boolean read FPrepared;
property RecordCount: Integer read GetRecordCount;
property RowsAffected: Integer read GetRowsAffected;
property AllRowsAffected: TAllRowsAffected read GetAllRowsAffected;
property SQLType: TFIBSQLTypes read FSQLType;
property TRHandle: PISC_TR_HANDLE read GetTRHandle;
property ProcExecuted:boolean read FProcExecuted write FProcExecuted;
property OnSQLFetch:TOnSQLFetch read FOnSQLFetch write FOnSQLFetch; // for internal use
property OnlySrvParams:TStringList read FOnlySrvParams;
protected
FConditions:TConditions;
procedure AddCondition(const Name,Condition: string; Enabled: boolean);
procedure SetConditions(Value:TConditions);
published
property Conditions: TConditions read FConditions write SetConditions;
public
{ISQLObject}
function ParamCount:integer;
function ParamName(ParamIndex:integer):string;
function FieldName(FieldIndex:integer):string;
function FieldsCount:integer;
function FieldExist(const FieldName:string; var FieldIndex:integer):boolean;
function ParamExist(const ParamName:string; var ParamIndex:integer):boolean;
function FieldValue(const FieldName:string;Old:boolean):variant; overload;
function FieldValue(const FieldIndex:integer;Old:boolean):variant; overload;
function ParamValue(const ParamName:string):variant; overload;
function ParamValue(const ParamIndex:integer):variant; overload;
function DefMacroValue(const MacroName:string):string;
procedure SetParamValue(const ParamIndex:integer; aValue:Variant);
function IEof:boolean;
procedure INext;
{End ISQLObject}
function ReadySQLText(ForChangeExecSQL:boolean=True):string;
property SQLTextChangeCount:integer read FSQLTextChangeCount;
private
procedure SetPlanClause(const Value:string);
function GetPlanClause:string;
public
procedure AssignProperties(Source: TFIBQuery);
function WhereClausesCount:integer;
property WhereClause[Index:integer]:string read GetWhereClause write SetWhereClause;
property MainWhereClause:string read GetMainWhereClause write SetMainWhereClause;
property IndexMainWhere:integer read GetMainWhereIndex;
property CursorName :string read FCursorName write FCursorName;
property OrderClause:string read GetOrderString write SetOrderString;
property GroupByClause:string read GetGroupByString write SetGroupByString;
property FieldsClause:string read GetFieldsClause write SetFieldsClause;
property PlanClause:string read GetPlanClause write SetPlanClause;
property ModifyTable:string read GetModifyTable;
property CallTime :Cardinal read FCallTime;
property MacroChanged:boolean read FMacroChanged;
property SQLKind:TSQLKind read GetSQLKind;
property BeforeExecute:TNotifyEvent read FBeforeExecute write FBeforeExecute;
property AfterExecute :TNotifyEvent read FAfterExecute write FAfterExecute;
published
property Transaction: TFIBTransaction read GetTransaction write SetTransaction;
property Database: TFIBDatabase read GetDatabase write SetDatabase;
property GoToFirstRecordOnExecute: Boolean read FGoToFirstRecordOnExecute
write FGoToFirstRecordOnExecute
default True;
property ParamCheck: Boolean read FParamCheck write SetParamCheck default True;
property SQL: TStrings read FSQL write SetSQL;
property OnSQLChanging: TNotifyEvent read FOnSQLChanging write FOnSQLChanging;
property Options : TpFIBQueryOptions read FOptions write FOptions stored False;
property OnBatching : TOnBatching read FOnBatching write FOnBatching ;
property OnBatchError :TOnBatchError read FOnBatchError write FOnBatchError;
// property OnBatchXMLFile:TOnBatchXMLFile read FOnApplyXMLFile write FOnApplyXMLFile;
// property OnBacthXMLError:TOnBatchError read FOnApplyXMLError write FOnApplyXMLError;
property TransactionEnding:TNotifyEvent read FTransactionEnding write FTransactionEnding;
property TransactionEnded :TNotifyEvent read FTransactionEnded write FTransactionEnded;
property AfterFirstFetch:TNotifyEvent read FAfterFirstFetch write FAfterFirstFetch;
{$IFDEF CSMonitor}
property CSMonitorSupport: TCSMonitorSupport read FCSMonitorSupport write SetMonitorSupport;
{$ENDIF}
end;
procedure BlobToStream (ModelVar:TFIBXSQLVAR; BlobID:TISC_QUAD;Stream: TStream);
const
ExecProcPrefix ='EXECUTE ';
//Statistic consts
scPrepareCount ='PrepareCount' ;
scExecuteCount ='ExecuteCount' ;
scSumTimeExecute ='SumTimeExecute';
scAvgTimeExecute ='AvgTimeExecute';
scMaxTimeExecute ='MaxTimeExecute';
scLastTimeExecute='LastTimeExecute';
scLastQuery ='LastQueryName';
fibGUID_NULL: TGUID = '{00000000-0000-0000-0000-000000000000}';
chUnicodeFSS=3;
{$IFDEF SUPPORT_KOI8_CHARSET}
chFBKOI8R=63;
chFBKOI8U=64;
CodePageKOI8R=20866;
CodePageKOI8RU=21866;
{$ENDIF}
var DisableEncodingSQLText:boolean;
TraceString:string;
implementation
uses
FIBMiscellaneous, StrUtil,
IBBlobFilter, FIBConsts,FIBCloneComponents
//Added uses
{$IFNDEF NO_MONITOR}
,FIBSQLMonitor
{$ENDIF}
{$IFDEF CSMonitor}
,FIBDataSet,pFIBDataSet
{$ENDIF}
;
const
cPlanMaxLength=16384;
(* TFIBXSQLVAR *)
constructor TFIBXSQLVAR.Create(AParent: TFIBXSQLDA);
begin
FParent := AParent;
FVariantFalse := 0;
FVariantTrue := 1;
FModified:=False;
FIsMacro :=False;
FQuoted :=False;
FOldValue :=Unassigned;
FInWhereClause:=False;
FInitialized :=False;
FCanForceIsNull:=False;
{$IFDEF SUPPORT_ARRAY_FIELD}
vFIBArray :=nil;
{$ENDIF}
end;
destructor TFIBXSQLVAR.Destroy; //override;
begin
{$IFDEF SUPPORT_ARRAY_FIELD}
if Assigned(vFIBArray) then vFIBArray.Free;
{$ENDIF}
inherited Destroy;
FreeAndNil(FStreamValue);
end;
{$WARNINGS OFF}
procedure TFIBXSQLVAR.Assign(Source: TFIBXSQLVAR);
var
szBuff: PAnsiChar;
s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
bSourceBlob, bDestBlob: Boolean;
iSegs, iMaxSeg, iSize: Long;
iBlobType: Short;
SP:TFIBXSQLVAR;
DestSQLType,SrcSQLType:integer;
begin
if IsMacro then
begin
AsString:=Source.AsString;
Exit;
end;
szBuff := nil;
SrcSQLType :=Source.FXSQLVAR^.sqltype and (not 1);
DestSQLType:=FXSQLVAR^.sqltype and (not 1) ;
bSourceBlob:=SrcSQLType=SQL_BLOB;
bDestBlob :=True;
s_bhandle :=nil;
d_bhandle :=nil;
try
if (Source.IsNull) then
begin
IsNull := True;
Exit;
end
else
if (DestSQLType = SQL_ARRAY) or (SrcSQLType = SQL_ARRAY) then Exit;
// arrays not supported.
if (DestSQLType <> SQL_BLOB) and not bSourceBlob then
begin
AsXSQLVAR := Source.AsXSQLVAR;
Exit;
end
else
if (SrcSQLType <> SQL_BLOB) then
begin
szBuff := nil;
FIBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
iSize := Source.FXSQLVAR^.sqllen;
end
else
if (DestSQLType <> SQL_BLOB) then
begin
if FParent=FQuery.FUserSQLParams then
begin
if not FQuery.Prepared then FQuery.Prepare;
SP:=FQuery.FSQLParams.FindParam(Name);
bDestBlob := not (
(SP=nil) or (SP.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB)
);
if bDestBlob then AsQuad:=SP.AsQuad;
end
else
bDestBlob := False;
end;
if bSourceBlob then
begin
// read the blob
Source.FQuery.Call(
Source.FQuery.Database.ClientLibrary.isc_open_blob2(StatusVector, Source.FQuery.DBHandle,
Source.FQuery.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
0, nil), True
);
with Source.FQuery,Source.FQuery.Database do
try
GetBlobInfo(ClientLibrary,@s_bhandle,iSegs, iMaxSeg, iSize,iBlobType);
szBuff := nil;
FIBAlloc(szBuff, 0, iSize);
ReadBlob(ClientLibrary,@s_bhandle, szBuff, iSize);
if (not bDestBlob) // avoid
or (FXSQLVAR^.sqlsubtype<>Source.FXSQLVAR^.sqlsubtype)
then
IBFilterBuffer(Database,szBuff, iSize, Source.FXSQLVAR^.sqlsubtype, False); // ivan_ra
finally
Source.FQuery.Call(
ClientLibrary.isc_close_blob(StatusVector, @s_bhandle), True
);
end;
end;
if bDestBlob then
begin
// write the blob
FQuery.Call(FQuery.Database.ClientLibrary.isc_create_blob2(StatusVector, FQuery.DBHandle,
FQuery.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
0, nil), True);
try
if (not bSourceBlob) // avoid conversation
or (FXSQLVAR^.sqlsubtype<>Source.FXSQLVAR^.sqlsubtype)
then
IBFilterBuffer(FQuery.Database,szBuff, iSize, Source.FXSQLVAR^.sqlsubtype, True); // ivan_ra
WriteBlob(FQuery.Database.ClientLibrary,@d_bhandle, szBuff, iSize);
IsNull := False;
finally
FQuery.Call(FQuery.Database.ClientLibrary.isc_close_blob(StatusVector, @d_bhandle), True);
end;
end
else
begin
// just copy the buffer
FXSQLVAR.sqltype := SQL_TEXT;
FXSQLVAR.sqllen := iSize;
FIBAlloc(FXSQLVAR.sqldata, iSize, iSize);
Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
end;
finally
FIBAlloc(szBuff, 0, 0);
end;
end;
procedure TFIBXSQLVAR.SetSQLLen(A:SmallInt);
begin
FXSQLVAR^.sqllen:=A
end;
function TFIBXSQLVAR.GetAsInt64: Int64;
begin
Result := 0;
if not IsNull then
case FXSQLVAR^.sqltype and (not 1) of
SQL_TEXT, SQL_VARYING:
begin
try
Result := StrToInt64(AsWideString);
except
on E: Exception do FIBError(feInvalidDataConversion, [nil]);
end;
end;
SQL_SHORT:
Result := PShort(FXSQLVAR^.sqldata)^ div Trunc(E10[-FXSQLVAR^.sqlscale]);
SQL_LONG:
Result := PLong(FXSQLVAR^.sqldata)^ div Trunc(E10[-FXSQLVAR^.sqlscale]);
SQL_INT64:
Result := PInt64(FXSQLVAR^.sqldata)^ div Trunc(E10[-FXSQLVAR^.sqlscale]);
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
Result := Trunc(AsDouble);
SQL_NULL: Result:=0;
else
FIBError(feInvalidDataConversion, [nil]);
end;
end;
function TFIBXSQLVAR.GetAsCurrency: Currency;
begin
if IsNull then
Result:=0
else
if (FQuery.Database.SQLDialect < 3)
or (FXSQLVAR^.sqltype and (not 1)<>SQL_INT64)
then
Result := GetAsDouble
else
Result := PInt64(FXSQLVAR^.sqldata)^*E10[FXSQLVAR^.sqlscale];
end;
{$IFNDEF NO_USE_COMP}
function TFIBXSQLVAR.GetAsComp: Comp;
begin
InitFPU;
Result := 0;
if not IsNull then
if (FXSQLVAR^.sqltype and (not 1))<>SQL_INT64 then
Result:= AsDouble
else
Result := PInt64(FXSQLVAR^.sqldata)^ *E10[FXSQLVAR^.sqlscale];
end;
{$ENDIF}
const
IBBuffDateDelta=678576;
function TFIBXSQLVAR.GetAsTimeStamp: TTimeStamp;
begin
if IsNull then
begin
Result.Time :=0;
Result.Date :=0;
end
else
case FXSQLVAR^.sqltype and (not 1) of
SQL_TEXT, SQL_VARYING:
try
Result := DateTimeToTimeStamp(StrToDate(AsWideString));
except
on E: EConvertError do FIBError(feInvalidDataConversion, [nil]);
end;
SQL_TYPE_TIME:
begin
Result.Date := 0;
Result.Time := PISC_TIME(FXSQLVAR^.sqldata)^ div 10
end;
SQL_TYPE_DATE:
begin
Result.Date := PISC_DATE(FXSQLVAR^.sqldata)^ + IBBuffDateDelta;
Result.Time := 0
end;
SQL_TIMESTAMP:
with PISC_QUAD(FXSQLVAR^.sqldata)^ do
begin
Result.Date := gds_quad_high + IBBuffDateDelta;
Result.Time := gds_quad_low div 10
end;
else
FIBError(feInvalidDataConversion, [nil]);
end;
end;
function TFIBXSQLVAR.GetAsDateTime: TDateTime;
const
MSecsPerDay10 = MSecsPerDay * 10;
begin
Result := 0;
if not IsNull then
case FXSQLVAR^.sqltype and (not 1) of
SQL_TEXT, SQL_VARYING:
try
Result := StrToDate(AsWideString);
except
on E: EConvertError do FIBError(feInvalidDataConversion, [nil]);
end;
SQL_TYPE_TIME:
begin
Result :=PISC_TIME(FXSQLVAR^.sqldata)^/MSecsPerDay10;
end;
SQL_TYPE_DATE:
begin
Result:=PISC_DATE(FXSQLVAR^.sqldata)^-IBDateDelta;
end;
SQL_TIMESTAMP:
begin
{ Result:=
PISC_QUAD(FXSQLVAR^.sqldata)^.gds_quad_high-IBDateDelta+
PISC_QUAD(FXSQLVAR^.sqldata)^.gds_quad_low/MSecsPerDay10;}
Result:=
HookTimeStampToDateTime(AsTimeStamp);
end;
else
FIBError(feInvalidDataConversion, [nil]);
end;
end;
function TFIBXSQLVAR.GetAsDouble: Double;
begin
Result := 0;
if not IsNull then
case FXSQLVAR^.sqltype and (not 1) of
SQL_TEXT, SQL_VARYING:
begin