| 72 |
|
interface |
| 73 |
|
|
| 74 |
|
uses |
| 75 |
< |
Classes, SysUtils, IB, FBParamBlock, FBActivityMonitor; |
| 75 |
> |
Classes, SysUtils, IB, FBParamBlock, FBActivityMonitor, FBClientAPI, FBOutputBlock; |
| 76 |
|
|
| 77 |
|
type |
| 78 |
|
{ TFBTransaction } |
| 79 |
|
|
| 80 |
|
TFBTransaction = class(TActivityReporter, IActivityMonitor,ITransaction) |
| 81 |
|
private |
| 82 |
+ |
FFirebirdAPI: TFBClientAPI; |
| 83 |
|
function GenerateTPB(sl: array of byte): ITPB; |
| 84 |
|
protected |
| 85 |
|
FTPB: ITPB; |
| 86 |
|
FSeqNo: integer; |
| 87 |
< |
FDefaultCompletion: TTransactionAction; |
| 87 |
> |
FDefaultCompletion: TTransactionCompletion; |
| 88 |
|
FAttachments: array of IAttachment; {Keep reference to attachment - ensures |
| 89 |
|
attachment cannot be freed before transaction} |
| 90 |
+ |
FTransactionName: AnsiString; |
| 91 |
+ |
FForeignHandle: boolean; |
| 92 |
+ |
procedure CheckHandle; |
| 93 |
|
function GetActivityIntf(att: IAttachment): IActivityMonitor; virtual; abstract; |
| 94 |
+ |
function GetJournalIntf(Attachment: IAttachment): IJournallingHook; |
| 95 |
+ |
procedure SetInterface(api: TFBClientAPI); virtual; |
| 96 |
+ |
function GetTrInfo(ReqBuffer: PByte; ReqBufLen: integer): ITrInformation; virtual; abstract; |
| 97 |
+ |
procedure InternalStartSingle(attachment: IAttachment); virtual; abstract; |
| 98 |
+ |
procedure InternalStartMultiple; virtual; abstract; |
| 99 |
+ |
procedure InternalCommit(Force: boolean); virtual; abstract; |
| 100 |
+ |
procedure InternalCommitRetaining; virtual; abstract; |
| 101 |
+ |
procedure InternalRollback(Force: boolean); virtual; abstract; |
| 102 |
+ |
procedure InternalRollbackRetaining; virtual; abstract; |
| 103 |
|
public |
| 104 |
< |
constructor Create(Attachments: array of IAttachment; Params: array of byte; DefaultCompletion: TTransactionAction); overload; |
| 105 |
< |
constructor Create(Attachments: array of IAttachment; TPB: ITPB; DefaultCompletion: TTransactionAction); overload; |
| 106 |
< |
constructor Create(Attachment: IAttachment; Params: array of byte; DefaultCompletion: TTransactionAction); overload; |
| 107 |
< |
constructor Create(Attachment: IAttachment; TPB: ITPB; DefaultCompletion: TTransactionAction); overload; |
| 104 |
> |
constructor Create(api: TFBClientAPI; Attachments: array of IAttachment; Params: array of byte; DefaultCompletion: TTransactionAction; aName: AnsiString); overload; |
| 105 |
> |
constructor Create(api: TFBClientAPI; Attachments: array of IAttachment; TPB: ITPB; DefaultCompletion: TTransactionAction; aName: AnsiString); overload; |
| 106 |
> |
constructor Create(api: TFBClientAPI; Attachment: IAttachment; Params: array of byte; DefaultCompletion: TTransactionAction; aName: AnsiString); overload; |
| 107 |
> |
constructor Create(api: TFBClientAPI; Attachment: IAttachment; TPB: ITPB; DefaultCompletion: TTransactionAction; aName: AnsiString); overload; |
| 108 |
|
destructor Destroy; override; |
| 109 |
|
procedure DoDefaultTransactionEnd(Force: boolean); |
| 110 |
+ |
property FirebirdAPI: TFBClientAPI read FFirebirdAPI; |
| 111 |
|
|
| 112 |
|
public |
| 113 |
|
{ITransaction} |
| 114 |
|
function getTPB: ITPB; |
| 115 |
|
procedure PrepareForCommit;virtual; abstract; |
| 116 |
< |
procedure Commit(Force: boolean=false); virtual; abstract; |
| 117 |
< |
procedure CommitRetaining; virtual; abstract; |
| 116 |
> |
procedure Commit(Force: boolean=false); |
| 117 |
> |
procedure CommitRetaining; |
| 118 |
|
function GetInTransaction: boolean; virtual; abstract; |
| 119 |
+ |
function GetIsReadOnly: boolean; |
| 120 |
+ |
function GetTransactionID: integer; |
| 121 |
|
function GetAttachmentCount: integer; |
| 122 |
|
function GetAttachment(index: integer): IAttachment; |
| 123 |
< |
procedure Rollback(Force: boolean=false); virtual; abstract; |
| 124 |
< |
procedure RollbackRetaining; virtual; abstract; |
| 125 |
< |
procedure Start(DefaultCompletion: TTransactionCompletion=taCommit); overload; virtual; abstract; |
| 123 |
> |
function GetJournalingActive(attachment: IAttachment): boolean; |
| 124 |
> |
function GetDefaultCompletion: TTransactionCompletion; |
| 125 |
> |
procedure Rollback(Force: boolean=false); |
| 126 |
> |
procedure RollbackRetaining; |
| 127 |
> |
procedure Start(DefaultCompletion: TTransactionCompletion=taCommit); overload; |
| 128 |
|
procedure Start(TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit); overload; |
| 129 |
+ |
function GetTrInformation(Requests: array of byte): ITrInformation; overload; |
| 130 |
+ |
function GetTrInformation(Request: byte): ITrInformation; overload; |
| 131 |
+ |
function GetTransactionName: AnsiString; |
| 132 |
+ |
procedure SetTransactionName(aValue: AnsiString); |
| 133 |
|
|
| 134 |
|
property InTransaction: boolean read GetInTransaction; |
| 135 |
|
property TransactionSeqNo: integer read FSeqNo; |
| 136 |
|
end; |
| 137 |
|
|
| 138 |
+ |
{The transaction user interface is used to force an action on the end of the |
| 139 |
+ |
transaction.} |
| 140 |
+ |
|
| 141 |
+ |
ITransactionUser = interface |
| 142 |
+ |
['{156fcdc9-a326-44b3-a82d-f23c6fb9f97c}'] |
| 143 |
+ |
procedure TransactionEnding(aTransaction: ITransaction; Force: boolean); |
| 144 |
+ |
end; |
| 145 |
+ |
|
| 146 |
+ |
{ TTPBItem } |
| 147 |
+ |
|
| 148 |
+ |
TTPBItem = class(TParamBlockItem,ITPBItem) |
| 149 |
+ |
public |
| 150 |
+ |
function getParamTypeName: AnsiString; override; |
| 151 |
+ |
end; |
| 152 |
+ |
|
| 153 |
+ |
{ TTPB } |
| 154 |
+ |
|
| 155 |
+ |
TTPB = class (TCustomParamBlock<TTPBItem,ITPBItem>, ITPB) |
| 156 |
+ |
protected |
| 157 |
+ |
function LookupItemType(ParamTypeName: AnsiString): byte; override; |
| 158 |
+ |
public |
| 159 |
+ |
constructor Create(api: TFBClientAPI); |
| 160 |
+ |
function GetParamTypeName(ParamType: byte): Ansistring; |
| 161 |
+ |
{$IFDEF FPC} |
| 162 |
+ |
function ITPB.GetDPBParamTypeName = GetParamTypeName; |
| 163 |
+ |
{$ELSE} |
| 164 |
+ |
function GetDPBParamTypeName(ParamType: byte): Ansistring; |
| 165 |
+ |
{$ENDIF} |
| 166 |
+ |
function AsText: AnsiString; |
| 167 |
+ |
end; |
| 168 |
+ |
|
| 169 |
+ |
{$IFDEF FPC} |
| 170 |
+ |
TTrInfoItem = class; |
| 171 |
+ |
|
| 172 |
+ |
{ TTrInfoItem } |
| 173 |
+ |
|
| 174 |
+ |
TTrInfoItem = class(TOutputBlockItemGroup<TTrInfoItem,ITrInfoItem>,ITrInfoItem) |
| 175 |
+ |
{$ELSE} |
| 176 |
+ |
TTrInfoItem = class(TOutputBlockItemGroup<TOutputBlockItem,ITrInfoItem>,ITrInfoItem) |
| 177 |
+ |
{$ENDIF} |
| 178 |
+ |
public |
| 179 |
+ |
procedure DecodeTraIsolation(var IsolationType, RecVersion: byte); |
| 180 |
+ |
end; |
| 181 |
+ |
|
| 182 |
+ |
{ TTrInformation } |
| 183 |
+ |
|
| 184 |
+ |
TTrInformation = class(TCustomOutputBlock<TTrInfoItem,ITrInfoItem>, ITrInformation) |
| 185 |
+ |
protected |
| 186 |
+ |
procedure DoParseBuffer; override; |
| 187 |
+ |
public |
| 188 |
+ |
constructor Create(api: TFBClientAPI; aSize: integer = DefaultBufferSize); |
| 189 |
+ |
{$IFNDEF FPC} |
| 190 |
+ |
function Find(ItemType: byte): ITrInfoItem; |
| 191 |
+ |
{$ENDIF} |
| 192 |
+ |
end; |
| 193 |
+ |
|
| 194 |
+ |
|
| 195 |
|
implementation |
| 196 |
|
|
| 197 |
< |
uses FBMessages, FBStatement; |
| 197 |
> |
uses FBMessages; |
| 198 |
> |
|
| 199 |
> |
const |
| 200 |
> |
isc_tpb_last_tpb_constant = isc_tpb_at_snapshot_number; |
| 201 |
> |
|
| 202 |
> |
TPBConstantNames: array[1..isc_tpb_last_tpb_constant] of string = ( |
| 203 |
> |
'consistency', |
| 204 |
> |
'concurrency', |
| 205 |
> |
'shared', |
| 206 |
> |
'protected', |
| 207 |
> |
'exclusive', |
| 208 |
> |
'wait', |
| 209 |
> |
'nowait', |
| 210 |
> |
'read', |
| 211 |
> |
'write', |
| 212 |
> |
'lock_read', |
| 213 |
> |
'lock_write', |
| 214 |
> |
'verb_time', |
| 215 |
> |
'commit_time', |
| 216 |
> |
'ignore_limbo', |
| 217 |
> |
'read_committed', |
| 218 |
> |
'autocommit', |
| 219 |
> |
'rec_version', |
| 220 |
> |
'no_rec_version', |
| 221 |
> |
'restart_requests', |
| 222 |
> |
'no_auto_undo', |
| 223 |
> |
'lock_timeout', |
| 224 |
> |
'read_consistency', |
| 225 |
> |
'at_snapshot_number' |
| 226 |
> |
); |
| 227 |
|
|
| 228 |
|
{ TFBTransaction } |
| 229 |
|
|
| 231 |
|
var |
| 232 |
|
i: Integer; |
| 233 |
|
begin |
| 234 |
< |
Result := TTPB.Create; |
| 234 |
> |
Result := TTPB.Create(FFirebirdAPI); |
| 235 |
|
for i := 0 to Length(sl) - 1 do |
| 236 |
|
Result.Add(sl[i]); |
| 237 |
|
end; |
| 238 |
|
|
| 239 |
< |
constructor TFBTransaction.Create(Attachments: array of IAttachment; |
| 240 |
< |
Params: array of byte; DefaultCompletion: TTransactionAction); |
| 239 |
> |
procedure TFBTransaction.CheckHandle; |
| 240 |
> |
begin |
| 241 |
> |
if not InTransaction then |
| 242 |
> |
IBError(ibxeNotInTransaction,[]); |
| 243 |
> |
end; |
| 244 |
> |
|
| 245 |
> |
function TFBTransaction.GetJournalIntf(Attachment: IAttachment): IJournallingHook; |
| 246 |
> |
begin |
| 247 |
> |
Attachment.QueryInterface(IJournallingHook,Result) |
| 248 |
> |
end; |
| 249 |
> |
|
| 250 |
> |
procedure TFBTransaction.SetInterface(api: TFBClientAPI); |
| 251 |
|
begin |
| 252 |
< |
Create(Attachments,GenerateTPB(Params), DefaultCompletion); |
| 252 |
> |
FFirebirdAPI := api; |
| 253 |
|
end; |
| 254 |
|
|
| 255 |
< |
constructor TFBTransaction.Create(Attachments: array of IAttachment; TPB: ITPB; |
| 256 |
< |
DefaultCompletion: TTransactionAction); |
| 255 |
> |
constructor TFBTransaction.Create(api: TFBClientAPI; Attachments: array of IAttachment; |
| 256 |
> |
Params: array of byte; DefaultCompletion: TTransactionAction; aName: AnsiString); |
| 257 |
> |
begin |
| 258 |
> |
Create(api, Attachments,GenerateTPB(Params), DefaultCompletion, aName); |
| 259 |
> |
end; |
| 260 |
> |
|
| 261 |
> |
constructor TFBTransaction.Create(api: TFBClientAPI; Attachments: array of IAttachment; TPB: ITPB; |
| 262 |
> |
DefaultCompletion: TTransactionAction; aName: AnsiString); |
| 263 |
|
var |
| 264 |
|
i: Integer; |
| 265 |
|
begin |
| 266 |
|
inherited Create(nil); |
| 267 |
+ |
FTransactionName := aName; |
| 268 |
+ |
SetInterface(api); |
| 269 |
|
if Length(Attachments) = 0 then |
| 270 |
|
IBError(ibxeEmptyAttachmentsList,[nil]); |
| 271 |
|
|
| 272 |
+ |
{make sure all attachments use same Firebird API} |
| 273 |
+ |
for i := 0 to Length(Attachments) - 1 do |
| 274 |
+ |
if Attachments[i].getFirebirdAPI.GetFBLibrary.GetHandle <> FFirebirdAPI.GetFBLibrary.GetHandle then |
| 275 |
+ |
IBError(ibxeDifferentAPIs,[nil]); |
| 276 |
+ |
|
| 277 |
|
SetLength(FAttachments,Length(Attachments)); |
| 278 |
|
for i := 0 to Length(Attachments) - 1 do |
| 279 |
|
begin |
| 284 |
|
Start(DefaultCompletion); |
| 285 |
|
end; |
| 286 |
|
|
| 287 |
< |
constructor TFBTransaction.Create(Attachment: IAttachment; |
| 288 |
< |
Params: array of byte; DefaultCompletion: TTransactionAction); |
| 287 |
> |
constructor TFBTransaction.Create(api: TFBClientAPI; Attachment: IAttachment; |
| 288 |
> |
Params: array of byte; DefaultCompletion: TTransactionAction; aName: AnsiString); |
| 289 |
|
begin |
| 290 |
< |
Create(Attachment,GenerateTPB(Params),DefaultCompletion); |
| 290 |
> |
Create(api,Attachment,GenerateTPB(Params),DefaultCompletion,aName); |
| 291 |
|
end; |
| 292 |
|
|
| 293 |
< |
constructor TFBTransaction.Create(Attachment: IAttachment; TPB: ITPB; |
| 294 |
< |
DefaultCompletion: TTransactionAction); |
| 293 |
> |
constructor TFBTransaction.Create(api: TFBClientAPI; Attachment: IAttachment; TPB: ITPB; |
| 294 |
> |
DefaultCompletion: TTransactionAction; aName: AnsiString); |
| 295 |
|
begin |
| 296 |
|
inherited Create(nil); |
| 297 |
+ |
SetInterface(api); |
| 298 |
|
AddMonitor(GetActivityIntf(Attachment)); |
| 299 |
|
SetLength(FAttachments,1); |
| 300 |
|
FAttachments[0] := Attachment; |
| 301 |
|
FTPB := TPB; |
| 302 |
+ |
FTransactionName := aName; |
| 303 |
|
Start(DefaultCompletion); |
| 304 |
|
end; |
| 305 |
|
|
| 311 |
|
|
| 312 |
|
procedure TFBTransaction.DoDefaultTransactionEnd(Force: boolean); |
| 313 |
|
var i: integer; |
| 314 |
< |
intf: TInterfacedObject; |
| 314 |
> |
intf: IUnknown; |
| 315 |
> |
user: ITransactionUser; |
| 316 |
|
begin |
| 317 |
< |
if InTransaction then |
| 317 |
> |
if InTransaction and not FForeignHandle then |
| 318 |
|
begin |
| 319 |
|
for i := 0 to InterfaceCount - 1 do |
| 320 |
|
begin |
| 321 |
|
intf := GetInterface(i); |
| 322 |
< |
if (intf <> nil) and (intf is TFBStatement) then |
| 323 |
< |
TFBStatement(intf).TransactionEnding(self,Force); |
| 322 |
> |
if (intf <> nil) and (intf.QueryInterface(ITransactionUser,user) = S_OK) then |
| 323 |
> |
user.TransactionEnding(self,Force); |
| 324 |
|
end; |
| 325 |
|
case FDefaultCompletion of |
| 326 |
|
taRollback: |
| 336 |
|
Result := FTPB; |
| 337 |
|
end; |
| 338 |
|
|
| 339 |
+ |
procedure TFBTransaction.Commit(Force: boolean); |
| 340 |
+ |
var i: integer; |
| 341 |
+ |
TransactionID: integer; |
| 342 |
+ |
TransactionEndNeeded: array of boolean; |
| 343 |
+ |
begin |
| 344 |
+ |
if not GetInTransaction then Exit; |
| 345 |
+ |
|
| 346 |
+ |
if FForeignHandle then |
| 347 |
+ |
IBError(ibxeTransactionNotOwned,[nil]); |
| 348 |
+ |
|
| 349 |
+ |
SetLength(TransactionEndNeeded,Length(FAttachments)); |
| 350 |
+ |
TransactionID := GetTransactionID; |
| 351 |
+ |
for i := 0 to Length(FAttachments) - 1 do |
| 352 |
+ |
if (FAttachments[i] <> nil) then |
| 353 |
+ |
TransactionEndNeeded[i] := GetJournalingActive(FAttachments[i]) |
| 354 |
+ |
else |
| 355 |
+ |
TransactionEndNeeded[i] := false; |
| 356 |
+ |
InternalCommit(Force); |
| 357 |
+ |
for i := 0 to Length(FAttachments) - 1 do |
| 358 |
+ |
if TransactionEndNeeded[i] then |
| 359 |
+ |
GetJournalIntf(FAttachments[i]).TransactionEnd(TransactionID, TACommit); |
| 360 |
+ |
end; |
| 361 |
+ |
|
| 362 |
+ |
procedure TFBTransaction.CommitRetaining; |
| 363 |
+ |
var i: integer; |
| 364 |
+ |
TransactionID: integer; |
| 365 |
+ |
begin |
| 366 |
+ |
if not GetInTransaction then Exit; |
| 367 |
+ |
|
| 368 |
+ |
TransactionID := GetTransactionID; |
| 369 |
+ |
InternalCommitRetaining; |
| 370 |
+ |
for i := 0 to Length(FAttachments) - 1 do |
| 371 |
+ |
if (FAttachments[i] <> nil) and GetJournalingActive(FAttachments[i]) then |
| 372 |
+ |
GetJournalIntf(FAttachments[i]).TransactionRetained(self,TransactionID, TACommitRetaining); |
| 373 |
+ |
end; |
| 374 |
+ |
|
| 375 |
+ |
function TFBTransaction.GetIsReadOnly: boolean; |
| 376 |
+ |
var Info: ITrInformation; |
| 377 |
+ |
begin |
| 378 |
+ |
Info := GetTrInformation(isc_info_tra_access); |
| 379 |
+ |
if (Info.Count > 0) and (Info[0].getItemType = isc_info_tra_access) then |
| 380 |
+ |
Result := Info[0].getAsInteger = isc_info_tra_readonly |
| 381 |
+ |
else |
| 382 |
+ |
Result := false; |
| 383 |
+ |
end; |
| 384 |
+ |
|
| 385 |
+ |
function TFBTransaction.GetTransactionID: integer; |
| 386 |
+ |
var Info: ITrInformation; |
| 387 |
+ |
begin |
| 388 |
+ |
Result := -1; |
| 389 |
+ |
Info := GetTrInformation(isc_info_tra_id); |
| 390 |
+ |
if (Info.Count > 0) and (Info[0].getItemType = isc_info_tra_id) then |
| 391 |
+ |
Result := Info[0].getAsInteger; |
| 392 |
+ |
end; |
| 393 |
+ |
|
| 394 |
|
function TFBTransaction.GetAttachmentCount: integer; |
| 395 |
|
begin |
| 396 |
|
Result := Length(FAttachments); |
| 404 |
|
IBError(ibxeAttachmentListIndexError,[index]); |
| 405 |
|
end; |
| 406 |
|
|
| 407 |
+ |
function TFBTransaction.GetJournalingActive(attachment: IAttachment): boolean; |
| 408 |
+ |
begin |
| 409 |
+ |
Result := false; |
| 410 |
+ |
if (attachment = nil) and (length(FAttachments) > 0) then |
| 411 |
+ |
attachment := FAttachments[0]; |
| 412 |
+ |
if attachment <> nil then |
| 413 |
+ |
with attachment do |
| 414 |
+ |
Result := self.GetInTransaction and JournalingActive and |
| 415 |
+ |
((((joReadOnlyTransactions in GetJournalOptions) and self.GetIsReadOnly)) or |
| 416 |
+ |
((joReadWriteTransactions in GetJournalOptions) and not self.GetIsReadOnly)); |
| 417 |
+ |
end; |
| 418 |
+ |
|
| 419 |
+ |
function TFBTransaction.GetDefaultCompletion: TTransactionCompletion; |
| 420 |
+ |
begin |
| 421 |
+ |
Result := FDefaultCompletion; |
| 422 |
+ |
end; |
| 423 |
+ |
|
| 424 |
+ |
procedure TFBTransaction.Rollback(Force: boolean); |
| 425 |
+ |
var i: integer; |
| 426 |
+ |
TransactionID: integer; |
| 427 |
+ |
TransactionEndNeeded: array of boolean; |
| 428 |
+ |
begin |
| 429 |
+ |
if not GetInTransaction then Exit; |
| 430 |
+ |
|
| 431 |
+ |
if FForeignHandle then |
| 432 |
+ |
IBError(ibxeTransactionNotOwned,[nil]); |
| 433 |
+ |
|
| 434 |
+ |
SetLength(TransactionEndNeeded,Length(FAttachments)); |
| 435 |
+ |
TransactionID := GetTransactionID; |
| 436 |
+ |
for i := 0 to Length(FAttachments) - 1 do |
| 437 |
+ |
if (FAttachments[i] <> nil) then |
| 438 |
+ |
TransactionEndNeeded[i] := GetJournalingActive(FAttachments[i]) |
| 439 |
+ |
else |
| 440 |
+ |
TransactionEndNeeded[i] := false; |
| 441 |
+ |
InternalRollback(Force); |
| 442 |
+ |
for i := 0 to Length(FAttachments) - 1 do |
| 443 |
+ |
if TransactionEndNeeded[i] then |
| 444 |
+ |
GetJournalIntf(FAttachments[i]).TransactionEnd(TransactionID, TARollback); |
| 445 |
+ |
end; |
| 446 |
+ |
|
| 447 |
+ |
procedure TFBTransaction.RollbackRetaining; |
| 448 |
+ |
var i: integer; |
| 449 |
+ |
TransactionID: integer; |
| 450 |
+ |
begin |
| 451 |
+ |
if not GetInTransaction then Exit; |
| 452 |
+ |
|
| 453 |
+ |
TransactionID := GetTransactionID; |
| 454 |
+ |
InternalRollbackRetaining; |
| 455 |
+ |
for i := 0 to Length(FAttachments) - 1 do |
| 456 |
+ |
if (FAttachments[i] <> nil) and GetJournalingActive(FAttachments[i]) then |
| 457 |
+ |
GetJournalIntf(FAttachments[i]).TransactionRetained(self,TransactionID,TARollbackRetaining); |
| 458 |
+ |
end; |
| 459 |
+ |
|
| 460 |
+ |
procedure TFBTransaction.Start(DefaultCompletion: TTransactionCompletion); |
| 461 |
+ |
var i: integer; |
| 462 |
+ |
begin |
| 463 |
+ |
if GetInTransaction then |
| 464 |
+ |
Exit; |
| 465 |
+ |
|
| 466 |
+ |
FDefaultCompletion := DefaultCompletion; |
| 467 |
+ |
|
| 468 |
+ |
if Length(FAttachments) = 1 then |
| 469 |
+ |
InternalStartSingle(FAttachments[0]) |
| 470 |
+ |
else |
| 471 |
+ |
InternalStartMultiple; |
| 472 |
+ |
for i := 0 to Length(FAttachments) - 1 do |
| 473 |
+ |
if (FAttachments[i] <> nil) and GetJournalingActive(FAttachments[i]) then |
| 474 |
+ |
GetJournalIntf(FAttachments[i]).TransactionStart(self); |
| 475 |
+ |
Inc(FSeqNo); |
| 476 |
+ |
end; |
| 477 |
+ |
|
| 478 |
|
procedure TFBTransaction.Start(TPB: ITPB; DefaultCompletion: TTransactionCompletion |
| 479 |
|
); |
| 480 |
|
begin |
| 482 |
|
Start(DefaultCompletion); |
| 483 |
|
end; |
| 484 |
|
|
| 485 |
+ |
function TFBTransaction.GetTrInformation(Requests: array of byte |
| 486 |
+ |
): ITrInformation; |
| 487 |
+ |
var ReqBuffer: PByte; |
| 488 |
+ |
i: integer; |
| 489 |
+ |
begin |
| 490 |
+ |
CheckHandle; |
| 491 |
+ |
if Length(Requests) = 1 then |
| 492 |
+ |
Result := GetTrInformation(Requests[0]) |
| 493 |
+ |
else |
| 494 |
+ |
begin |
| 495 |
+ |
GetMem(ReqBuffer,Length(Requests)); |
| 496 |
+ |
try |
| 497 |
+ |
for i := 0 to Length(Requests) - 1 do |
| 498 |
+ |
ReqBuffer[i] := Requests[i]; |
| 499 |
+ |
|
| 500 |
+ |
Result := GetTrInfo(ReqBuffer,Length(Requests)); |
| 501 |
+ |
|
| 502 |
+ |
finally |
| 503 |
+ |
FreeMem(ReqBuffer); |
| 504 |
+ |
end; |
| 505 |
+ |
end; |
| 506 |
+ |
end; |
| 507 |
+ |
|
| 508 |
+ |
function TFBTransaction.GetTrInformation(Request: byte): ITrInformation; |
| 509 |
+ |
begin |
| 510 |
+ |
CheckHandle; |
| 511 |
+ |
Result := GetTrInfo(@Request,1); |
| 512 |
+ |
end; |
| 513 |
+ |
|
| 514 |
+ |
function TFBTransaction.GetTransactionName: AnsiString; |
| 515 |
+ |
begin |
| 516 |
+ |
Result := FTransactionName; |
| 517 |
+ |
end; |
| 518 |
+ |
|
| 519 |
+ |
procedure TFBTransaction.SetTransactionName(aValue: AnsiString); |
| 520 |
+ |
begin |
| 521 |
+ |
FTransactionName := aValue; |
| 522 |
+ |
end; |
| 523 |
+ |
|
| 524 |
+ |
{ TTPBItem } |
| 525 |
+ |
|
| 526 |
+ |
function TTPBItem.getParamTypeName: AnsiString; |
| 527 |
+ |
begin |
| 528 |
+ |
Result := TPBPrefix + TPBConstantNames[getParamType]; |
| 529 |
+ |
end; |
| 530 |
+ |
|
| 531 |
+ |
|
| 532 |
+ |
{TTPB} |
| 533 |
+ |
|
| 534 |
+ |
constructor TTPB.Create(api: TFBClientAPI); |
| 535 |
+ |
begin |
| 536 |
+ |
inherited Create(api); |
| 537 |
+ |
FDataLength := 1; |
| 538 |
+ |
FBuffer^ := isc_tpb_version3; |
| 539 |
+ |
end; |
| 540 |
+ |
|
| 541 |
+ |
function TTPB.GetParamTypeName(ParamType: byte): Ansistring; |
| 542 |
+ |
begin |
| 543 |
+ |
if ParamType <= isc_tpb_last_tpb_constant then |
| 544 |
+ |
Result := TPBPrefix + TPBConstantNames[ParamType] |
| 545 |
+ |
else |
| 546 |
+ |
Result := ''; |
| 547 |
+ |
end; |
| 548 |
+ |
|
| 549 |
+ |
function TTPB.AsText: AnsiString; |
| 550 |
+ |
var i: integer; |
| 551 |
+ |
begin |
| 552 |
+ |
Result := '['; |
| 553 |
+ |
for i := 0 to getCount - 1 do |
| 554 |
+ |
begin |
| 555 |
+ |
Result := Result + GetParamTypeName(getItems(i).getParamType); |
| 556 |
+ |
if i < getCount - 1 then |
| 557 |
+ |
Result := Result + ','; |
| 558 |
+ |
end; |
| 559 |
+ |
Result := Result + ']'; |
| 560 |
+ |
end; |
| 561 |
+ |
|
| 562 |
+ |
{$IFNDEF FPC} |
| 563 |
+ |
function TTPB.GetDPBParamTypeName(ParamType: byte): Ansistring; |
| 564 |
+ |
begin |
| 565 |
+ |
Result := GetParamTypeName(ParamType); |
| 566 |
+ |
end; |
| 567 |
+ |
{$ENDIF} |
| 568 |
+ |
|
| 569 |
+ |
|
| 570 |
+ |
function TTPB.LookupItemType(ParamTypeName: AnsiString): byte; |
| 571 |
+ |
var i: byte; |
| 572 |
+ |
begin |
| 573 |
+ |
Result := 0; |
| 574 |
+ |
ParamTypeName := LowerCase(ParamTypeName); |
| 575 |
+ |
if (Pos(TPBPrefix, ParamTypeName) = 1) then |
| 576 |
+ |
Delete(ParamTypeName, 1, Length(TPBPrefix)); |
| 577 |
+ |
|
| 578 |
+ |
for i := 1 to isc_tpb_last_tpb_constant do |
| 579 |
+ |
if (ParamTypeName = TPBConstantNames[i]) then |
| 580 |
+ |
begin |
| 581 |
+ |
Result := i; |
| 582 |
+ |
break; |
| 583 |
+ |
end; |
| 584 |
+ |
end; |
| 585 |
+ |
|
| 586 |
+ |
{ TTrInfoItem } |
| 587 |
+ |
|
| 588 |
+ |
procedure TTrInfoItem.DecodeTraIsolation(var IsolationType, RecVersion: byte); |
| 589 |
+ |
begin |
| 590 |
+ |
with FFirebirdClientAPI, ItemData^ do |
| 591 |
+ |
if getItemType = isc_info_tra_isolation then |
| 592 |
+ |
begin |
| 593 |
+ |
if FDataLength = 1 then |
| 594 |
+ |
begin |
| 595 |
+ |
IsolationType := getAsInteger; |
| 596 |
+ |
RecVersion := 0; |
| 597 |
+ |
end |
| 598 |
+ |
else |
| 599 |
+ |
begin |
| 600 |
+ |
IsolationType := (FBufPtr + 3)^; |
| 601 |
+ |
RecVersion := (FBufPtr + 4)^; |
| 602 |
+ |
end |
| 603 |
+ |
end |
| 604 |
+ |
else |
| 605 |
+ |
IBError(ibxeInfoBufferTypeError,[integer(FBufPtr^)]); |
| 606 |
+ |
end; |
| 607 |
+ |
|
| 608 |
+ |
{ TTrInformation } |
| 609 |
+ |
|
| 610 |
+ |
procedure TTrInformation.DoParseBuffer; |
| 611 |
+ |
var P: PByte; |
| 612 |
+ |
index: integer; |
| 613 |
+ |
begin |
| 614 |
+ |
P := Buffer; |
| 615 |
+ |
index := 0; |
| 616 |
+ |
SetLength(FItems,0); |
| 617 |
+ |
while (P^ <> isc_info_end) and (P < Buffer + getBufSize) do |
| 618 |
+ |
begin |
| 619 |
+ |
SetLength(FItems,index+1); |
| 620 |
+ |
case byte(P^) of |
| 621 |
+ |
isc_info_tra_id, |
| 622 |
+ |
isc_info_tra_oldest_interesting, |
| 623 |
+ |
isc_info_tra_oldest_active, |
| 624 |
+ |
isc_info_tra_oldest_snapshot, |
| 625 |
+ |
fb_info_tra_snapshot_number, |
| 626 |
+ |
isc_info_tra_lock_timeout: |
| 627 |
+ |
FItems[index] := AddIntegerItem(P); |
| 628 |
+ |
|
| 629 |
+ |
isc_info_tra_isolation, |
| 630 |
+ |
{return transaction isolation mode of current transaction. |
| 631 |
+ |
format of returned clumplets is following: |
| 632 |
+ |
|
| 633 |
+ |
isc_info_tra_isolation, |
| 634 |
+ |
1, isc_info_tra_consistency | isc_info_tra_concurrency |
| 635 |
+ |
| |
| 636 |
+ |
2, isc_info_tra_read_committed, |
| 637 |
+ |
isc_info_tra_no_rec_version | isc_info_tra_rec_version |
| 638 |
+ |
|
| 639 |
+ |
i.e. for read committed transactions returned 2 items while for |
| 640 |
+ |
other transactions returned 1 item} |
| 641 |
+ |
|
| 642 |
+ |
isc_info_tra_access: |
| 643 |
+ |
FItems[index] := AddIntegerItem(P); |
| 644 |
+ |
fb_info_tra_dbpath: |
| 645 |
+ |
FItems[index] := AddStringItem(P); |
| 646 |
+ |
else |
| 647 |
+ |
FItems[index] := AddItem(P); |
| 648 |
+ |
end; |
| 649 |
+ |
P := P + FItems[index]^.FSize; |
| 650 |
+ |
Inc(index); |
| 651 |
+ |
end; |
| 652 |
+ |
end; |
| 653 |
+ |
|
| 654 |
+ |
constructor TTrInformation.Create(api: TFBClientAPI; aSize: integer); |
| 655 |
+ |
begin |
| 656 |
+ |
inherited Create(api,aSize); |
| 657 |
+ |
FIntegerType := dtInteger; |
| 658 |
+ |
end; |
| 659 |
+ |
|
| 660 |
+ |
{$IFNDEF FPC} |
| 661 |
+ |
function TTrInformation.Find(ItemType: byte): ITrInfoItem; |
| 662 |
+ |
begin |
| 663 |
+ |
Result := inherited Find(ItemType); |
| 664 |
+ |
if Result.GetSize = 0 then |
| 665 |
+ |
Result := nil; |
| 666 |
+ |
end; |
| 667 |
+ |
{$ENDIF} |
| 668 |
+ |
|
| 669 |
|
end. |
| 670 |
|
|
