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FIBDatabase.pas
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FIBDatabase.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:[email protected] }
{ }
{ Copyright (c) 1998-2013 Devrace Ltd. }
{ Written by Serge Buzadzhy ([email protected]) }
{ }
{ ------------------------------------------------------------- }
{ 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 FIBDatabase;
interface
{$I FIBPlus.inc}
{$IFDEF D_XE2}
{$UNDEF NO_GUI}
{$UNDEF DIRECT_USE_DB_LOGIN_FORM}
{$ENDIF}
uses
SysUtils, SyncObjs,Classes,ibase, IB_Intf, IB_Externals,
pFIBProps,IBBlobFilter, Fib, pFIBEventLists,StdFuncs,
pFIBInterfaces, FIBPlatforms
{$IFDEF D6+} ,Variants{$ENDIF}
{$IFDEF D_XE2}
,System.UITypes
{$ENDIF}
{$IFDEF FIBPLUS_TRIAL}
,Windows
{$IFDEF D_XE2}
,VCL.Dialogs
{$ELSE}
,Dialogs
{$ENDIF}
{$ENDIF}
{$IFDEF DIRECT_USE_DB_LOGIN_FORM}
,FIBDBLoginDlg //IS GUI
{$ENDIF}
;
type
TFIBDatabase = class;
TFIBTransaction = class;
TFIBBase = class;
TDesignDBOption=(ddoIsDefaultDatabase,ddoStoreConnected,ddoNotSavePassword);
TDesignDBOptions = set of TDesignDBOption;
TpFIBDBEventType =(detOnConnect,detBeforeDisconnect,detBeforeDestroy);
TFIBUseRepository=(urFieldsInfo,urDataSetInfo,urErrorMessagesInfo);
TFIBUseRepositories=set of TFIBUseRepository;
TFBContextSpace=(csSystem,csSession,csTransaction);
TDatabaseRunStateValues=(drsInCloseLostConnect,drsInRestoreLostConnect);
TDatabaseRunState= set of TDatabaseRunStateValues;
TBeforeSaveBlobToSwap=procedure(const TableName,FieldName:string;
{ const } RecordKeyValues:array of variant;Stream:TStream;var FileName:string; var CanSave:boolean) of object;
TAfterSaveLoadBlobSwap=procedure(const TableName,FieldName:string;
{const }RecordKeyValues:array of variant;const FileName:string) of object;
TBeforeLoadBlobFromSwap=procedure(const TableName,FieldName:string;
{ const } RecordKeyValues:array of variant;var FileName:string; var CanLoad:boolean) of object;
TActionOnIdle=(aiCloseConnect,aiKeepLiveConnect);
TOnIdleConnect=procedure (Sender:TFIBDatabase; IdleTicks:Cardinal; var Action:TActionOnIdle) of object;
TIBCharSets=set of byte;
(* TFIBDatabase *)
{$IFDEF D_XE2}
TDoChangeScreenCursor = procedure(NewCursor:Integer; var OldCursor:Integer) of object ;
{$ENDIF}
TFIBDatabase = class(TComponent,IIbClientLibrary,IFIBConnect)
private
FSQLLogger:ISQLLogger;
FSQLStatMaker:ISQLStatMaker;
FUseRepositories :TFIBUseRepositories;
FLibraryName :string;
FUseBlrToTextFilter :boolean;
FClientLibLoaded :boolean;
FBlobSwapSupport :TBlobSwapSupport;
FBeforeSaveBlobToSwap:TBeforeSaveBlobToSwap;
FAfterSaveBlobToSwap :TAfterSaveLoadBlobSwap;
FAfterLoadBlobFromSwap :TAfterSaveLoadBlobSwap;
FBeforeLoadBlobFromSwap:TBeforeLoadBlobFromSwap;
FOnIdleConnect:TOnIdleConnect;
FAutoReconnect:boolean;
FGenerators :TGeneratorsCache;
FMemoSubtypes : TMemoSubtypes;
{$IFDEF D_XE2}
FLibraryName64 :string;
FDoChangeScreenCursor: TDoChangeScreenCursor ;
{$ENDIF}
function GetMemoSubtypes :string;
procedure SetMemoSubtypes(const Value:string);
procedure SetGenerators(Value:TGeneratorsCache);
procedure SetLibraryName(const LibName:string);
function StoredLibraryName:boolean;
{$IFDEF D_XE2}
function StoredLibraryName64:boolean;
{$ENDIF}
procedure LoadLibrary;
procedure SetBlobSwapSupport(const Value: TBlobSwapSupport);
procedure SetSQLLogger(const Value: ISQLLogger);
procedure SetSQLStatMaker(const Value: ISQLStatMaker);
function GetBusy: boolean;
protected
FClientLibrary :IIBClientLibrary;
FFIBBases : TList; // TFIBBases attached.
FTransactions : TList; // TFIBTransactions attached.
FDBName : Ansistring; // DB's name
FDBParams : TDBParams; // "Pretty" Parameters to database
FDBParamsChanged : Boolean; // Flag to determine if DPB must be regenerated
FDPB : PAnsiChar; // Parameters to DB as passed to IB.
FDPBLength : Short; // Length of parameter buffer
FHandle : TISC_DB_HANDLE; // DB's handle
FHandleIsShared : Boolean; // Is the handle shared with another DB?
FUseLoginPrompt : Boolean; // Show a default login prompt?
FOnConnect : TNotifyEvent; // Upon successful connection...
FOnTimeout : TNotifyEvent; // Upon timing out...
FDefaultTransaction : TFIBTransaction; // Many transaction components can be specified, but this is the primary, or default one to use.
FDefaultUpdateTransaction : TFIBTransaction; //
FStreamedConnected : Boolean; // Used for delaying the opening of the database.
FTimer : TFIBTimer; // The timer ID.
FUserNames : TStringList; // For use only with GetUserNames
FActiveTransactions : TStringList; // For use only with GetActiveTransactions
FBackoutCount: TStringList; // isc_info_backout_count
FDeleteCount: TStringList; // isc_info_delete_count
FExpungeCount: TStringList; // isc_info_expunge_count
FInsertCount: TStringList; // isc_info_insert_count
FPurgeCount: TStringList; // isc_info_purge_count
FReadIdxCount: TStringList; // isc_info_read_idx_count
FReadSeqCount: TStringList; // isc_info_read_seq_count
FUpdateCount: TStringList; // isc_info_update_count
//IB6
FSQLDialect:integer;
FUpperOldNames : boolean; // compatibility with IB4..5 field names conventions
FConnectParams:TConnectParams;
FDesignDBOptions:TDesignDBOptions;
FBeforeDisconnect:TNotifyEvent;
FAfterDisconnect:TNotifyEvent;
FDifferenceTime : double;
FSynchronizeTime:boolean;
vInternalTransaction:TFIBTransaction;
vOnConnected :TNotifyEventList;
vBeforeDisconnect :TNotifyEventList;
vOnDestroy :TNotifyEventList;
vAttachmentID :Long;
FBlobFilters :TIBBlobFilters;
FDBFileName :string;
FConnectType :ShortInt;
FNeedUnicodeFieldsTranslation:boolean;
FIsUnicodeConnect:boolean;
FIsKOI8Connect:boolean;
FIsNoneConnect:boolean;
FDatabaseRunState :TDatabaseRunState;
FLastActiveTime:Cardinal;
FStreammedConnectFail:boolean;
procedure DBParamsChange(Sender: TObject);
procedure DBParamsChanging(Sender: TObject);
function GetConnected: Boolean; // Is DB connected?
function GetDatabaseName: string;
function GetFIBBase(Index: Integer): TFIBBase; // Get the indexed FIBBase.
function GetFIBBasesCount: Integer; // Get the number of FIBBase connected.
function GetDBParamByDPB(const Idx: Integer): string;
function GetTimeout: Cardinal; // Get the timeout
function GetTransaction(Index: Integer): TFIBTransaction;
function GetFirstActiveTransaction: TFIBTransaction;
function GetTransactionCount: Integer;
function GetActiveTransactionCount: Integer;
function Login: Boolean; // Show login prompt
procedure SetConnected(Value: Boolean);
procedure SetDatabaseName(const Value: string);
procedure SetDBParamByDPB(const Idx: Integer; Value: string);
procedure SetDBParamByName(const ParName,Value: string);
procedure SetDBParams(Value: TDBParams);
procedure SetDefaultTransaction(Value: TFIBTransaction);
procedure SetDefaultUpdateTransaction(Value: TFIBTransaction);
procedure CreateTimeoutTimer;
procedure SetHandle(Value: TISC_DB_HANDLE);
procedure SetTimeout(Value: Cardinal);
procedure SetDesignDBOptions(Value:TDesignDBOptions);
procedure TimeoutConnection(Sender: TObject);
(* Database Info procedures -- Advanced stuff (translated from isc_database_info) *)
function GetAllocation: Long; // isc_info_allocation
function GetBaseLevel: Long; // isc_info_base_level
function GetDBFileName: Ansistring; // isc_info_db_id
function GetDBSiteName: Ansistring; // isc_info_db_id
function GetIsRemoteConnect: boolean; // isc_info_db_id
function GetDBImplementationNo: Long; // isc_info_implementation
function GetDBImplementationClass: Long;
function GetNoReserve: Long; // isc_info_no_reserve
function GetODSMinorVersion: Long; // isc_info_ods_minor_version
function GetODSMajorVersion: Long; // isc_info_ods_version
function GetPageSize: Long; // isc_info_page_size
function GetVersion: string; // isc_info_info_version
function GetCurrentMemory: Long; // isc_info_current_memory
function GetForcedWrites: Long; // isc_info_forced_writes
function GetMaxMemory: Long; // isc_info_max_memory
function GetNumBuffers: Long; // isc_info_num_buffers
function GetSweepInterval: Long; // isc_info_sweep_interval
function GetUserNames: TStringList;// isc_info_user_names
function GetFetches: Long;// isc_info_fetches
function GetMarks: Long; // isc_info_marks
function GetReads: Long; // isc_info_reads
function GetWrites: Long; // isc_info_writes
function GetBackoutCount: TStringList;// isc_info_backout_count
function GetDeleteCount: TStringList; // isc_info_delete_count
function GetExpungeCount: TStringList;// isc_info_expunge_count
function GetInsertCount: TStringList; // isc_info_insert_count
function GetPurgeCount: TStringList; // isc_info_purge_count
function GetReadIdxCount: TStringList;// isc_info_read_idx_count
function GetReadSeqCount: TStringList;// isc_info_read_seq_count
function GetUpdateCount: TStringList; // isc_info_update_count
function GetTableOperationInfo(const TableName:string; FromStrs:TStrings):integer;
function GetIndexedReadCount(const TableName:string):integer;
function GetNonIndexedReadCount(const TableName:string):integer;
function GetInsertsCount(const TableName:string):integer;
function GetUpdatesCount(const TableName:string):integer;
function GetDeletesCount(const TableName:string):integer;
function GetOperationCounts(DBInfoCommand: Integer; var FOperation: TStringList): TStringList;
function GetAllModifications:integer;
function GetLogFile: Long; // isc_info_log_file
function GetCurLogFileName: string; // isc_info_cur_logfile_name
function GetCurLogPartitionOffset: Long; // isc_info_cur_log_part_offset
function GetNumWALBuffers: Long; // isc_info_num_wal_buffers
function GetWALBufferSize: Long; // isc_info_wal_buffer_size
function GetWALCheckpointLength: Long; // isc_info_wal_ckpt_length
function GetWALCurCheckpointInterval: Long; // isc_info_wal_cur_ckpt_interval
function GetWALPrvCheckpointFilename: string;// isc_info_wal_prv_ckpt_fname
function GetWALPrvCheckpointPartOffset: Long;// isc_info_wal_prv_ckpt_poffset
function GetWALGroupCommitWaitUSecs: Long; // isc_info_wal_grpc_wait_usecs
function GetWALNumIO: Long; // isc_info_wal_num_id
function GetWALAverageIOSize: Long; // isc_info_wal_avg_io_size
function GetWALNumCommits: Long; // isc_info_wal_num_commits
function GetWALAverageGroupCommitSize: Long; // isc_info_wal_avg_grpc_size
function GetProtectLongDBInfo(DBInfoCommand: Integer;var Success:boolean): Long;
function GetStringDBInfo(DBInfoCommand: Integer): string;
function GetLongDBInfo(DBInfoCommand: Integer): Long;
function GetAttachmentID :Long;
//Firebird Info
function GetActiveTransactions: TStringList; // frb_info_active_transactions
function GetOldestTransaction: Long; // frb_info_oldest_transaction
function GetOldestActive: Long; // frb_info_oldest_active
function GetOldestSnapshot: Long; // frb_info_oldest_snapshot
function GetFBVersion: string; // frb_info_firebird_version
function GetAttachCharset: integer; // frb_info_att_charset
private
// Versions
FServerMajorVersion:integer;
FServerMinorVersion:integer;
FServerRelease:integer;
FServerBuild:integer;
FNeedUTFDecodeDDL:boolean;
FIsFB21OrMore :boolean;
procedure FillServerVersions;
function GetServerMajorVersion: integer;
function GetServerMinorVersion: integer;
function GetServerRelease: integer;
function GetServerBuild: integer;
protected
function GetInternalTransaction:TFIBTransaction; // friend for pFIBDataInfo
property StreammedConnectFail:boolean read FStreammedConnectFail;
protected
//IB6
function GetDBSQLDialect:Word;
function GetSQLDialect:Integer;
procedure SetSQLDialect(const Value: Integer);
function GetReadOnly: Long;
function GetStoreConnected:boolean;
{$IFDEF CSMonitor}
private
FCSMonitorSupport: TCSMonitorSupport;
procedure SetCSMonitorSupport(Value:TCSMonitorSupport);
{$ENDIF}
protected
FIsFireBirdConnect:boolean;
FIsIB2007Connect:boolean;
function GetIsFirebirdConnect :boolean;
procedure Loaded; override;
procedure Notification(AComponent: TComponent; Operation: TOperation);override;
procedure InternalClose(Force: Boolean;DBinShutDown:boolean=False); virtual ;
procedure DoOnConnect;
procedure DoBeforeDisconnect;
procedure DoAfterDisconnect;
{$IFDEF USE_DEPRECATE_METHODS1}
procedure RemoveDataSet(Idx: Integer); deprecated;
procedure RemoveDataSets; deprecated;
function AddDataSet(ds: TFIBBase): Integer; deprecated;
{$ENDIF}
procedure RemoveFIBBase(Idx: Integer);
procedure RemoveFIBBases;
function AddFIBBase(ds: TFIBBase): Integer;
procedure RemoveTransaction(Idx: Integer);
procedure RemoveTransactions;
function AddTransaction(TR: TFIBTransaction): Integer;
procedure IBFilterBuffer(var BlobBuffer:PAnsiChar;var BlobSize:longint;
BlobSubType:integer;ForEncode: boolean);
//IFIBObject
procedure SaveAlias; virtual;
public
procedure AddEvent(Event:TNotifyEvent;EventType:TpFIBDBEventType);
procedure RemoveEvent(Event:TNotifyEvent;EventType:TpFIBDBEventType);
procedure RegisterBlobFilter(BlobSubType:integer;
EncodeProc,DecodeProc:PIBBlobFilterProc);
procedure RemoveBlobFilter(BlobSubType:integer);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
procedure CheckActive(TryReconnect:boolean=False); // Raise error if DB is inactive
procedure CheckInactive; // Raise error if DB is active
procedure CheckDatabaseName; // Raise error if DBName is empty
procedure Close;
procedure CreateDatabase;
property DBParamByDPB[const Idx: Integer]: string read GetDBParamByDPB
write SetDBParamByDPB;
procedure DropDatabase;
function FindTransaction(TR: TFIBTransaction): Integer;
procedure ForceClose;
function IndexOfDBConst(const st: string): Integer; // Get the index of a given constant in DBParams
procedure Open(RaiseExcept:boolean = True); virtual;
function TestConnected: Boolean;
function GetServerTime:TDateTime;
//FB
procedure ShutDown(const ShutParams:array of integer;Delay:integer=0);
procedure Online;
public
function ClientVersion:string;
function ClientMajorVersion:integer;
function ClientMinorVersion:integer;
function IsFirebirdConnect :boolean;
function IsUnicodeConnect :boolean;
function IsIB2007Connect :boolean;
function NeedUTFEncodeDDL :boolean;
function NeedUnicodeFieldsTranslation :boolean;
function NeedUnicodeFieldTranslation(FieldCharacterSet:integer) :boolean;
{$IFDEF SUPPORT_KOI8_CHARSET}
function IsKOI8Connect :boolean;
{$ENDIF}
{FB2 features}
function GetContextVariable(ContextSpace:TFBContextSpace;const VarName:string
;aTransaction:TFIBTransaction=nil
):Variant;
procedure SetContextVariable( ContextSpace:TFBContextSpace;const VarName,VarValue:string
;aTransaction:TFIBTransaction=nil
);
function CanCancelOperationFB21:boolean;
procedure CancelOperationFB21(ConnectForCancel:TFIBDatabase=nil);
procedure RaiseCancelOperations;
procedure EnableCancelOperations;
procedure DisableCancelOperations;
//
function UnicodeCharSets:TIBCharSets;
function BytesInUnicodeChar(CharSetId:integer):Byte;
function ReturnDeclaredFieldSize:boolean;
function MemoSubTypesActive:boolean;
function IsMemoSubtype(aSubtype: ShortInt):boolean;
function LibraryFilePath:string;
(* Properties*)
{$IFDEF USE_DEPRECATE_METHODS1}
property DataSetCount : Integer read GetFIBBasesCount; // deprecated;
property DataSets[Index: Integer]: TFIBBase read GetFIBBase; // deprecated;
{$ENDIF}
property FIBBaseCount: Integer read GetFIBBasesCount;
property FIBBases[Index: Integer]: TFIBBase read GetFIBBase;
property Handle: TISC_DB_HANDLE read FHandle write SetHandle;
property HandleIsShared: Boolean read FHandleIsShared;
property TransactionCount: Integer read GetTransactionCount;
property FirstActiveTransaction:TFIBTransaction read GetFirstActiveTransaction;
property ActiveTransactionCount: Integer read GetActiveTransactionCount;
property Transactions[Index: Integer]: TFIBTransaction read GetTransaction;
property IsFB21OrMore :boolean read FIsFB21OrMore;
(* Database Info properties -- Advanced stuff (translated from isc_database_info) *)
property AttachmentID: Long read GetAttachmentID; // isc_info_attachment_id
property Allocation: Long read GetAllocation; // isc_info_allocation
property BaseLevel: Long read GetBaseLevel; // isc_info_base_level
property DBFileName: Ansistring read GetDBFileName; // isc_info_db_id
property DBSiteName: Ansistring read GetDBSiteName;
property IsRemoteConnect: boolean read GetIsRemoteConnect;
property DBImplementationNo: Long read GetDBImplementationNo; // isc_info_implementation
property DBImplementationClass: Long read GetDBImplementationClass;
property NoReserve: Long read GetNoReserve; // isc_info_no_reserve
property ODSMinorVersion: Long read GetODSMinorVersion; // isc_info_ods_minor_version
property ODSMajorVersion: Long read GetODSMajorVersion; // isc_info_ods_version
property PageSize: Long read GetPageSize; // isc_info_page_size
property Version: string read GetVersion; // isc_info_info_version
property FBVersion:string read GetFBVersion;
property FBAttachCharsetID:Integer read GetAttachCharset;
property ServerMajorVersion:integer read GetServerMajorVersion;
property ServerMinorVersion:integer read GetServerMinorVersion;
property ServerBuild:integer read GetServerBuild;
property ServerRelease:integer read GetServerRelease;
property CurrentMemory: Long read GetCurrentMemory; // isc_info_current_memory
property ForcedWrites: Long read GetForcedWrites; // isc_info_forced_writes
property MaxMemory: Long read GetMaxMemory; // isc_info_max_memory
property NumBuffers: Long read GetNumBuffers; // isc_info_num_buffers
property SweepInterval: Long read GetSweepInterval; // isc_info_sweep_interval
property UserNames: TStringList read GetUserNames; // isc_info_user_names
property Fetches: Long read GetFetches; // isc_info_fetches
property Marks: Long read GetMarks; // isc_info_marks
property Reads: Long read GetReads; // isc_info_reads
property Writes: Long read GetWrites; // isc_info_writes
property BackoutCount: TStringList read GetBackoutCount; // isc_info_backout_count
property DeleteCount: TStringList read GetDeleteCount; // isc_info_delete_count
property ExpungeCount: TStringList read GetExpungeCount; // isc_info_expunge_count
property InsertCount: TStringList read GetInsertCount; // isc_info_insert_count
property PurgeCount: TStringList read GetPurgeCount; // isc_info_purge_count
property ReadIdxCount: TStringList read GetReadIdxCount; // isc_info_read_idx_count
property ReadSeqCount: TStringList read GetReadSeqCount; // isc_info_read_seq_count
property UpdateCount: TStringList read GetUpdateCount; // isc_info_update_count
property IndexedReadCount[const TableName:string]:integer read GetIndexedReadCount;
property NonIndexedReadCount[const TableName:string]:integer read GetNonIndexedReadCount;
property InsertsCount[const TableName:string]:integer read GetInsertsCount;
property UpdatesCount[const TableName:string]:integer read GetUpdatesCount;
property DeletesCount[const TableName:string]:integer read GetDeletesCount;
property AllModifications:integer read GetAllModifications;
property LogFile: Long read GetLogFile; // isc_info_log_file
property CurLogFileName: string read GetCurLogFileName; // isc_info_cur_logfile_name
property CurLogPartitionOffset: Long read GetCurLogPartitionOffset; // isc_info_cur_log_part_offset
property NumWALBuffers: Long read GetNumWALBuffers; // isc_info_num_wal_buffers
property WALBufferSize: Long read GetWALBufferSize; // isc_info_wal_buffer_size
property WALCheckpointLength: Long read GetWALCheckpointLength; // isc_info_wal_ckpt_length
property WALCurCheckpointInterval: Long read GetWALCurCheckpointInterval; // isc_info_wal_cur_ckpt_interval
property WALPrvCheckpointFilename: string read GetWALPrvCheckpointFilename; // isc_info_wal_prv_ckpt_fname
property WALPrvCheckpointPartOffset: Long read GetWALPrvCheckpointPartOffset; // isc_info_wal_prv_ckpt_poffset
property WALGroupCommitWaitUSecs: Long read GetWALGroupCommitWaitUSecs; // isc_info_wal_grpc_wait_usecs
property WALNumIO: Long read GetWALNumIO; // isc_info_wal_num_id
property WALAverageIOSize: Long read GetWALAverageIOSize; // isc_info_wal_avg_io_size
property WALNumCommits: Long read GetWALNumCommits; // isc_info_wal_num_commits
property WALAverageGroupCommitSize: Long read GetWALAverageGroupCommitSize; // isc_info_wal_avg_grpc_size
//IB6
property DBSQLDialect:Word read GetDBSQLDialect;
property ReadOnly :Long read GetReadOnly ;
property DatabaseName: string read GetDatabaseName write SetDatabaseName;
property DifferenceTime : double read FDifferenceTime ;
//Firebird
property ServerActiveTransactions :TStringList read GetActiveTransactions;
property OldestTransactionID :Long read GetOldestTransaction;
property OldestActiveTransactionID :Long read GetOldestActive;
property Busy:boolean read GetBusy;
public
procedure StartTransaction;
procedure Commit;
procedure Rollback;
procedure CommitRetaining;
procedure RollbackRetaining;
function Gen_Id(const GeneratorName: string; Step: Int64;aTransaction:TFIBTransaction =nil): Int64;
function Execute(const SQL: string): boolean;
procedure CreateGUIDDomain;
function InternalQueryValue(const aSQL: string;FieldNo:integer;
ParamValues:array of variant; aTransaction:TFIBTransaction; aCacheQuery:boolean): Variant;
function QueryValue(const aSQL: string;FieldNo: Integer; ATransaction: TFIBTransaction=nil;
aCacheQuery:Boolean = True): Variant; overload;
function QueryValue(const aSQL: string;FieldNo:integer;
ParamValues:array of variant;aTransaction:TFIBTransaction=nil;aCacheQuery:boolean=True):Variant; overload;
function QueryValues(const aSQL: string;aTransaction:TFIBTransaction=nil
;aCacheQuery:boolean=True):Variant; overload;
function QueryValues(const aSQL: string; ParamValues:array of variant;aTransaction:TFIBTransaction=nil;
aCacheQuery:boolean=True):Variant; overload;
function QueryValueAsStr(const aSQL: string;FieldNo:integer):string;overload;
function QueryValueAsStr(const aSQL: string;FieldNo:integer;
ParamValues:array of variant):string; overload;
procedure ClearQueryCacheList;
function EasyFormatsStr :boolean;
property StoreConnected :boolean read GetStoreConnected;
property ClientLibrary:IIbClientLibrary read FClientLibrary implements IIbClientLibrary;
property SQLStatisticsMaker:ISQLStatMaker read FSQLStatMaker write SetSQLStatMaker;
published
property AutoReconnect:boolean read FAutoReconnect write FAutoReconnect default False;
property Connected: Boolean read GetConnected write SetConnected stored GetStoreConnected;
property BlobSwapSupport :TBlobSwapSupport read FBlobSwapSupport write SetBlobSwapSupport;
property DBName: string read GetDatabaseName write SetDatabaseName;
property DBParams: TDBParams read FDBParams write SetDBParams;
property DefaultTransaction: TFIBTransaction read FDefaultTransaction
write SetDefaultTransaction;
property DefaultUpdateTransaction: TFIBTransaction read FDefaultUpdateTransaction
write SetDefaultUpdateTransaction;
//IB6
property SQLDialect : Integer read FSQLDialect write SetSQLDialect;
property Timeout: Cardinal read GetTimeout write SetTimeout;
property UseLoginPrompt: Boolean read FUseLoginPrompt write FUseLoginPrompt default False;
// Events
property OnTimeout: TNotifyEvent read FOnTimeout write FOnTimeout;
property UpperOldNames: boolean read FUpperOldNames write FUpperOldNames
default False; // compatibility with IB4..5 field names conventions
property BeforeDisconnect:TNotifyEvent read FBeforeDisconnect write FBeforeDisconnect;
property AfterDisconnect :TNotifyEvent read FAfterDisconnect write FAfterDisconnect ;
property ConnectParams :TConnectParams read FConnectParams write FConnectParams stored False;
property SynchronizeTime:boolean read FSynchronizeTime write FSynchronizeTime default True;
property DesignDBOptions:TDesignDBOptions read FDesignDBOptions write SetDesignDBOptions default
[ddoStoreConnected]
;
property OnConnect: TNotifyEvent read FOnConnect write FOnConnect stored False; // obsolete
property BeforeSaveBlobToSwap:TBeforeSaveBlobToSwap read FBeforeSaveBlobToSwap write FBeforeSaveBlobToSwap;
property AfterSaveBlobToSwap:TAfterSaveLoadBlobSwap read FAfterSaveBlobToSwap write FAfterSaveBlobToSwap;
property AfterLoadBlobFromSwap :TAfterSaveLoadBlobSwap read FAfterLoadBlobFromSwap write FAfterLoadBlobFromSwap;
property BeforeLoadBlobFromSwap:TBeforeLoadBlobFromSwap read FBeforeLoadBlobFromSwap write FBeforeLoadBlobFromSwap;
property OnIdleConnect:TOnIdleConnect read FOnIdleConnect write FOnIdleConnect;
property UseRepositories:TFIBUseRepositories read FUseRepositories write FUseRepositories
default [urFieldsInfo,urDataSetInfo,urErrorMessagesInfo] ;
property LibraryName:string read FLibraryName write SetLibraryName stored StoredLibraryName;
//libfbclient.so MACOS
{$IFDEF D_XE2}
property LibraryName64:string read FLibraryName64 write FLibraryName64 stored StoredLibraryName64;
{$ENDIF}
property SQLLogger:ISQLLogger read FSQLLogger write SetSQLLogger;
property UseBlrToTextFilter :boolean read FUseBlrToTextFilter write FUseBlrToTextFilter default False;
property GeneratorsCache :TGeneratorsCache read FGenerators write SetGenerators;
{$IFDEF CSMonitor}
property CSMonitorSupport: TCSMonitorSupport read FCSMonitorSupport write SetCSMonitorSupport;
{$ENDIF}
{$IFDEF D_XE2}
property DoChangeScreenCursor: TDoChangeScreenCursor read FDoChangeScreenCursor write FDoChangeScreenCursor;
{$ENDIF}
published
property MemoSubtypes: string read GetMemoSubtypes write SetMemoSubtypes;
end;
(* TFIBTransaction *)
TTransactionAction =
(TARollback, TARollbackRetaining,TACommit, TACommitRetaining);
TTransactionState =
(tsActive,tsClosed,tsDoRollback,tsDoRollbackRetaining,tsDoCommit, tsDoCommitRetaining);
TTransactionRunState=(trsInLoaded);
TTransactionRunStates=set of TTransactionRunState;
TpFIBTrEventType =(tetBeforeStartTransaction,tetAfterStartTransaction,
tetBeforeEndTransaction,tetAfterEndTransaction,tetBeforeDestroy);
TEndTrEvent=procedure(EndingTR:TFIBTransaction;
Action: TTransactionAction; Force: Boolean)of object;
TFIBTransaction = class(TComponent,IFIBTransaction)
protected
FCanTimeout : Boolean; // Can the transaction timeout now?
FDatabases : TList; // TDatabases in transaction.
FFIBBases : TList; // TFIBBases attached.
FDefaultDatabase : TFIBDatabase; // just like DefaultTransaction in FIBDatabase
FHandle : TISC_TR_HANDLE; // TR's handle
FHandleIsShared : Boolean;
FOnTimeout : TNotifyEvent; // When the transaction times out...
FStreamedActive : Boolean;
FTPB : PAnsiChar; // Parameters to TR as passed to IB.
FTPBLength : Short; // Length of parameter buffer
FTimer : TFIBTimer; // Timer for timing out transactions.
FTimeoutAction : TTransactionAction; // Rollback or commit at end of timeout?
FTRParams : TStrings; // Parameters to Transactions.
FTRParamsChanged : Boolean;
FState : TTransactionState;
FTransactionID : integer;
vOnDestroy : TNotifyEventList;
vBeforeStartTransaction : TNotifyEventList;
vAfterStartTransaction : TNotifyEventList;
vBeforeEndTransaction : TCallBackList;
vAfterEndTransaction : TCallBackList;
vTRParams : array of Ansistring;
vTPBArray : array of Ansistring;
FTransactionRunStates :TTransactionRunStates;
FHasUncommitedUpdates :boolean;
FWatchUpdates :boolean;
{$IFDEF CSMonitor}
FCSMonitorSupport: TCSMonitorSupport;
procedure SetCSMonitorSupport(Value:TCSMonitorSupport);
{$ENDIF}
function GetTransactionID: integer;
function DoStoreActive:boolean;
procedure EndTransaction(Action: TTransactionAction; Force: Boolean); virtual;
// End the transaction using specified method...
function GetDatabase(Index: Integer): TFIBDatabase; // Get the indexed database
function GetDatabaseCount: Integer; // Get the number of databases in transaction
function GetFIBBase(Index: Integer): TFIBBase; // Get the indexed Dataset.
function GetFIBBasesCount: Integer; // Get the number of Datasets connected.
function GetInTransaction: Boolean; // Is there an active trans?
function GetTimeout: Cardinal;
procedure Loaded; override;
procedure SetActive(Value: Boolean);
procedure SetDefaultDatabase(Value: TFIBDatabase);
procedure SetHandle(Value: TISC_TR_HANDLE);
procedure SetTimeout(Value: Cardinal); // Set the timeout
procedure SetTRParams(Value: TStrings);
procedure TimeoutTransaction(Sender: TObject);
procedure TRParamsChange(Sender: TObject);
procedure TRParamsChanging(Sender: TObject);
procedure RemoveDatabases;
{$IFDEF USE_DEPRECATE_METHODS1}
procedure RemoveDataSet(Idx: Integer); deprecated;
procedure RemoveDataSets; deprecated;
function AddDataSet(ds: TFIBBase): Integer; deprecated;
{$ENDIF}
procedure RemoveFIBBase(Idx: Integer);
procedure RemoveFIBBases;
function AddFIBBase(ds: TFIBBase): Integer;
procedure CreateTimeoutTimer;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function MainDatabase:TFIBDatabase;
function FindDatabase(db: TFIBDatabase): Integer;
procedure AddEvent(Event:TNotifyEvent;EventType:TpFIBTrEventType);
procedure RemoveEvent(Event:TNotifyEvent;EventType:TpFIBTrEventType);
procedure AddEndEvent(Event:TEndTrEvent;EventType:TpFIBTrEventType);
procedure RemoveEndEvent(Event:TEndTrEvent;EventType:TpFIBTrEventType);
procedure DoOnSQLExec(Query:TComponent;Kind:TKindOnOperation); virtual;
function AddDatabase(db: TFIBDatabase): Integer; overload;
function AddDatabase(db: TFIBDatabase; const aTRParams: string): Integer; overload;
procedure RemoveDatabase(Idx: Integer);
procedure ReplaceDatabase(dbOld,dbNew: TFIBDatabase);
procedure OnDatabaseDisconnecting(DB: TFIBDatabase);
function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
procedure CheckDatabasesInList; // Raise error if no databases in list.
procedure CheckInTransaction; // Raise error if not in transaction
procedure CheckNotInTransaction; // Raise error if in transaction
procedure StartTransaction; virtual;
procedure Commit; virtual;
procedure CommitRetaining; virtual;
procedure Rollback; virtual;
procedure RollbackRetaining;virtual;
procedure ExecSQLImmediate(const SQLText:Widestring);
procedure SetSavePoint(const SavePointName:string);
procedure RollBackToSavePoint(const SavePointName:string);
procedure ReleaseSavePoint(const SavePointName:string);
procedure CloseAllQueryHandles;
function IsReadCommitedTransaction:boolean;
function IsReadOnly:boolean;
property DatabaseCount: Integer read GetDatabaseCount;
property Databases[Index: Integer]: TFIBDatabase read GetDatabase;
{$IFDEF USE_DEPRECATE_METHODS1}
property DataSetCount: Integer read GetFIBBasesCount; //deprecated;
property DataSets[Index: Integer]: TFIBBase read GetFIBBase; //deprecated;
{$ENDIF}
property FIBBaseCount: Integer read GetFIBBasesCount;
property FIBBases[Index: Integer]: TFIBBase read GetFIBBase;
property Handle: TISC_TR_HANDLE read FHandle write SetHandle;
property HandleIsShared: Boolean read FHandleIsShared;
property InTransaction: Boolean read GetInTransaction;
// property TPB: PChar read FTPB;
// property TPBLength: Short read FTPBLength;
property State: TTransactionState read FState;
property TransactionID: integer read GetTransactionID;
property HasUncommitedUpdates :boolean read FHasUncommitedUpdates ;
published
property Active: Boolean read GetInTransaction write SetActive stored DoStoreActive;
property DefaultDatabase: TFIBDatabase read FDefaultDatabase
write SetDefaultDatabase;
property Timeout: Cardinal read GetTimeout write SetTimeout default 0;
property TimeoutAction: TTransactionAction read FTimeoutAction write FTimeoutAction default TARollback;
property TRParams: TStrings read FTRParams write SetTRParams;
// Events
property OnTimeout: TNotifyEvent read FOnTimeout write FOnTimeout;
property WatchUncommitedUpdates :boolean read FWatchUpdates write FWatchUpdates default false;
{$IFDEF CSMonitor}
property CSMonitorSupport: TCSMonitorSupport read FCSMonitorSupport write SetCSMonitorSupport;
{$ENDIF}
end;
(* TFIBBase *)
(* Virtually all components in FIB are "descendents" of TFIBBase. *)
(* It is to more easily manage the database and transaction *)
(* connections. *)
TFIBBase = class(TObject)
protected
FDatabase: TFIBDatabase;
FIndexInDatabase: Integer;
FTransaction: TFIBTransaction;
FIndexInTransaction: Integer;
FOwner: TObject;
procedure FOnDatabaseConnecting;
procedure FOnDatabaseConnected;
procedure FOnDatabaseDisconnecting;
procedure FOnDatabaseDisconnected;
procedure FOnTransactionStarting;
procedure FOnTransactionStarted;
procedure FOnDatabaseFree;
procedure FOnTransactionEnding;
procedure FOnTransactionEnded;
procedure FOnTransactionFree;
function GetDBHandle: PISC_DB_HANDLE;
function GetTRHandle: PISC_TR_HANDLE;
procedure SetDatabase(Value: TFIBDatabase);
procedure SetTransaction(Value: TFIBTransaction);
public
constructor Create(AOwner: TObject);
destructor Destroy; override;
procedure CheckDatabase; virtual;
procedure CheckTransaction; virtual;
public // properties
OnDatabaseConnecting: TNotifyEvent;
OnDatabaseConnected: TNotifyEvent;
OnDatabaseDisconnecting: TNotifyEvent;
OnDatabaseDisconnected: TNotifyEvent;
OnDatabaseFree: TNotifyEvent;
OnTransactionEnding: TNotifyEvent;
OnTransactionEnded: TNotifyEvent;
OnTransactionStarting: TNotifyEvent;
OnTransactionStarted: TNotifyEvent;
OnTransactionFree: TNotifyEvent;
property Database: TFIBDatabase read FDatabase
write SetDatabase;
property DBHandle: PISC_DB_HANDLE read GetDBHandle;
property Owner: TObject read FOwner;
property TRHandle: PISC_TR_HANDLE read GetTRHandle;
property Transaction: TFIBTransaction read FTransaction
write SetTransaction;
end;
procedure SaveSchemaToFile(const FileName:string);
function LoadSchemaFromFile(const FileName:string; const NeedValidate:boolean=True;
DB:TFIBDatabase=nil
):boolean;
procedure IBFilterBuffer(DataBase:TFIBDataBase;
var BlobBuffer:PAnsiChar;var BlobSize:longint; BlobSubType:integer;ForEncode: boolean
);
function ExistBlobFilter(DataBase:TFIBDataBase;BlobSubType:integer):boolean;
function GetConnectedDataBase(const DBName:string ):TFIBDatabase;
procedure CloseAllDatabases;
procedure AssignSQLObjectParams(Dest: ISQLObject; ParamSources : array of ISQLObject);
const
OCTETS_CHARSET_ID=1;
var DefDataBase :TFIBDatabase;
DatabaseList :TThreadList;
FIBHideGrantError :boolean = False;
implementation
uses
{$IFNDEF NO_MONITOR}
FIBSQLMonitor,
{$ENDIF}
{$IFDEF D_XE3}
System.Types, // for inline funcs
{$ENDIF}
FIBMiscellaneous,pFIBDataInfo,FIBQuery, StrUtil,pFIBCacheQueries, FIBConsts;
var
vConnectCS: TCriticalSection;
procedure AssignSQLObjectParams(Dest: ISQLObject; ParamSources : array of ISQLObject);
var
i: Integer;
j: Integer;
k: Integer;
c: Integer;
pName:string;
OldValue:boolean;
begin
if Dest=nil then
Exit;
c:=Pred(Dest.ParamCount);
for i := 0 to c do
begin
pName:=Dest.ParamName(i);
OldValue:=False;
if IsNewParamName(pName) then
pName:=FastCopy(pName,5,MaxInt)
else
if IsOldParamName(pName) then
begin
pName:=FastCopy(pName,5,MaxInt);
OldValue:=True;
end;
for j := Low(ParamSources) to High(ParamSources) do
if Assigned(ParamSources[j]) then
if ParamSources[j].FieldExist(pName,k) then
begin
Dest.SetParamValue(i,ParamSources[j].FieldValue(k,OldValue))
end
else
if ParamSources[j].ParamExist(Dest.ParamName(i),k) then
begin
Dest.SetParamValue(i,ParamSources[j].ParamValue(k))
end;
end;
end;
function GetConnectedDataBase(const DBName:string ):TFIBDatabase;
var i:integer;
begin
Result:=nil;
with DatabaseList.LockList do
try
for I := 0 to Count - 1 do
if (TFIBDatabase(Items[i]).DBName=DBName)and (TFIBDatabase(Items[i]).Connected)
then
begin
Result:=TFIBDatabase(Items[i]);
Break;
end;
finally
DatabaseList.UnLockList
end;
end;
procedure CloseAllDatabases;
var i:integer;
begin
with DatabaseList.LockList do
try
for i:=0 to Count-1 do
begin
if TFIBDatabase(Items[i]).Connected then
TFIBDatabase(Items[i]).ForceClose
end;
finally
DatabaseList.UnLockList
end;
end;
procedure IBFilterBuffer(DataBase:TFIBDataBase;
var BlobBuffer:PAnsiChar;var BlobSize:longint;
BlobSubType:integer;ForEncode: boolean);
begin
if DataBase.FBlobFilters=nil then
Exit;
DataBase.FBlobFilters.IBFilterBuffer(BlobBuffer,BlobSize,BlobSubType,ForEncode);
end;
function ExistBlobFilter(DataBase:TFIBDataBase;BlobSubType:integer):boolean;
var
anIndex:integer;
begin
if Assigned(DataBase.FBlobFilters) then
Result:=DataBase.FBlobFilters.Find(BlobSubType,anIndex)
else
Result:=False
end;
procedure SaveSchemaToFile(const FileName:string);
begin
ListTableInfo.SaveToFile(FileName);
ListDataSetInfo.SaveToFile(ChangeFileExt(FileName,'.dt'));
ListErrorMessages.SaveToFile(ChangeFileExt(FileName,'.err'));
end;
function LoadSchemaFromFile(const FileName:string; const NeedValidate:boolean=True;
DB:TFIBDatabase=nil
):boolean;
begin
Result:=ListTableInfo.LoadFromFile(FileName,DB);
ListTableInfo.NeedValidate:=NeedValidate;
ListDataSetInfo.LoadFromFile(ChangeFileExt(FileName,'.dt'));
ListDataSetInfo.NeedValidate:=NeedValidate;
ListErrorMessages.LoadFromFile(ChangeFileExt(FileName,'.err'));
end;
(* TFIBDatabase *)
constructor TFIBDatabase.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FLibraryName := IBASE_DLL;
FClientLibrary:= nil;
FFIBBases := TList.Create;
FTransactions := TList.Create;
FDBName := '';
FDBParams := TDBParams.Create(Self);
FDBParamsChanged := True;
TStringList(FDBParams).OnChange := DBParamsChange;
TStringList(FDBParams).OnChanging := DBParamsChanging;
{$IFDEF CSMonitor}
FCSMonitorSupport := TCSMonitorSupport.Create(Self);
{$ENDIF}
FConnectParams := TConnectParams.Create(Self);
FDifferenceTime := 0;
if (csDesigning in ComponentState) and not CmpInLoadedState(Self)
then
begin
FSynchronizeTime :=DefSynchronizeTime;
FUpperOldNames :=DefUpperOldNames ;
FUseLoginPrompt :=DefUseLoginPrompt ;
FConnectParams.CharSet:=DefCharSet;
FSQLDialect :=DefSQLDialect;
if DefStoreConnected then
FDesignDBOptions := [ddoStoreConnected]
else
FDesignDBOptions := []
end
else
begin
FSynchronizeTime :=True ;
FUpperOldNames :=False;
FUseLoginPrompt :=False;
FSQLDialect :=1;
FDesignDBOptions := [ddoStoreConnected]
end;
vInternalTransaction:=TFIBTransaction.Create(Self);
vInternalTransaction.DefaultDataBase:=Self;
vInternalTransaction.TimeoutAction:=taCommit;
vInternalTransaction.Timeout :=1000;
with vInternalTransaction.TRParams do
begin
Text:='write'+#13#10+
'isc_tpb_nowait'+#13#10+