trunk/runtime/IBDatabaseInfo.pas

{************************************************************************}
{                                                                        }
{       Borland Delphi Visual Component Library                          }
{       InterBase Express core components                                }
{                                                                        }
{       Copyright (c) 1998-2000 Inprise Corporation                      }
{                                                                        }
{    InterBase Express is based in part on the product                   }
{    Free IB Components, written by Gregory H. Deatz for                 }
{    Hoagland, Longo, Moran, Dunst & Doukas Company.                     }
{    Free IB Components is used under license.                           }
{                                                                        }
{    The contents of this file are subject to the InterBase              }
{    Public License Version 1.0 (the "License"); you may not             }
{    use this file except in compliance with the License. You            }
{    may obtain a copy of the License at http://www.Inprise.com/IPL.html }
{    Software distributed under the License is distributed on            }
{    an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either              }
{    express or implied. See the License for the specific language       }
{    governing rights and limitations under the License.                 }
{    Portions created by Inprise Corporation are Copyright (C) Inprise   }
{       Corporation. All Rights Reserved.                                }
{    Contributor(s): Jeff Overcash                                       }
{                                                                        }
{************************************************************************}

unit IBDatabaseInfo;

{$Mode Delphi}

interface

uses
  SysUtils, Classes, IBHeader, IBExternals, IB, IBDatabase;

type

  TIBDatabaseInfo = class(TComponent)
  protected
    FIBLoaded: Boolean;
    FDatabase: TIBDatabase;
    FUserNames   : TStringList;
    FBackoutCount: TStringList;
    FDeleteCount: TStringList;
    FExpungeCount: TStringList;
    FInsertCount: TStringList;
    FPurgeCount: TStringList;
    FReadIdxCount: TStringList;
    FReadSeqCount: TStringList;
    FUpdateCount: TStringList;
    function GetAllocation: Long;
    function GetBaseLevel: Long;
    function GetDBFileName: String;
    function GetDBSiteName: String;
    function GetDBImplementationNo: Long;
    function GetDBImplementationClass: Long;
    function GetNoReserve: Long;
    function GetODSMinorVersion: Long;
    function GetODSMajorVersion: Long;
    function GetPageSize: Long;
    function GetVersion: String;
    function GetCurrentMemory: Long;
    function GetForcedWrites: Long;
    function GetMaxMemory: Long;
    function GetNumBuffers: Long;
    function GetSweepInterval: Long;
    function GetUserNames: TStringList;
    function GetFetches: Long;
    function GetMarks: Long;
    function GetReads: Long;
    function GetWrites: Long;
    function GetBackoutCount: TStringList;
    function GetDeleteCount: TStringList;
    function GetExpungeCount: TStringList;
    function GetInsertCount: TStringList;
    function GetPurgeCount: TStringList;
    function GetReadIdxCount: TStringList;
    function GetReadSeqCount: TStringList;
    function GetUpdateCount: TStringList;
    function GetOperationCounts(DBInfoCommand: Integer; FOperation: TStringList): TStringList;
    function GetReadOnly: Long;
    function GetStringDatabaseInfo(DatabaseInfoCommand: Integer): String;
    function GetDBSQLDialect: Long;
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
    function GetLongDatabaseInfo(DatabaseInfoCommand: Integer): Long;
    property Allocation: Long read GetAllocation;
    property BaseLevel: Long read GetBaseLevel;
    property DBFileName: String read GetDBFileName;
    property DBSiteName: String read GetDBSiteName;
    property DBImplementationNo: Long read GetDBImplementationNo;
    property DBImplementationClass: Long read GetDBImplementationClass;
    property NoReserve: Long read GetNoReserve;
    property ODSMinorVersion: Long read GetODSMinorVersion;
    property ODSMajorVersion: Long read GetODSMajorVersion;
    property PageSize: Long read GetPageSize;
    property Version: String read GetVersion;
    property CurrentMemory: Long read GetCurrentMemory;
    property ForcedWrites: Long read GetForcedWrites;
    property MaxMemory: Long read GetMaxMemory;
    property NumBuffers: Long read GetNumBuffers;
    property SweepInterval: Long read GetSweepInterval;
    property UserNames: TStringList read GetUserNames;
    property Fetches: Long read GetFetches;
    property Marks: Long read GetMarks;
    property Reads: Long read GetReads;
    property Writes: Long read GetWrites;
    property BackoutCount: TStringList read GetBackoutCount;
    property DeleteCount: TStringList read GetDeleteCount;
    property ExpungeCount: TStringList read GetExpungeCount;
    property InsertCount: TStringList read GetInsertCount;
    property PurgeCount: TStringList read GetPurgeCount;
    property ReadIdxCount: TStringList read GetReadIdxCount;
    property ReadSeqCount: TStringList read GetReadSeqCount;
    property UpdateCount: TStringList read GetUpdateCount;
    property DBSQLDialect : Long read GetDBSQLDialect;
    property ReadOnly: Long read GetReadOnly;
  published
    property Database: TIBDatabase read FDatabase write FDatabase;
  end;

implementation

uses
  IBIntf;

{ TIBDatabaseInfo }

constructor TIBDatabaseInfo.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FIBLoaded := False;
  CheckIBLoaded;
  FIBLoaded := True;
  FUserNames := TStringList.Create;
  FBackoutCount                        := nil;
  FDeleteCount                         := nil;
  FExpungeCount                        := nil;
  FInsertCount                         := nil;
  FPurgeCount                          := nil;
  FReadIdxCount                        := nil;
  FReadSeqCount                        := nil;
  FUpdateCount                         := nil;
end;

destructor TIBDatabaseInfo.Destroy;
begin
  if FIBLoaded then
  begin
    FUserNames.Free;
    FBackoutCount.Free;
    FDeleteCount.Free;
    FExpungeCount.Free;
    FInsertCount.Free;
    FPurgeCount.Free;
    FReadIdxCount.Free;
    FReadSeqCount.Free;
    FUpdateCount.Free;
  end;
  inherited Destroy;
end;


function TIBDatabaseInfo.Call(ErrCode: ISC_STATUS;
  RaiseError: Boolean): ISC_STATUS;
begin
  result := ErrCode;
  if RaiseError and (ErrCode > 0) then
    IBDataBaseError;
end;
function TIBDatabaseInfo.GetAllocation: Long;
begin
  result := GetLongDatabaseInfo(isc_info_allocation);
end;

function TIBDatabaseInfo.GetBaseLevel: Long;
var
  local_buffer: array[0..IBLocalBufferLength - 1] of Char;
  DatabaseInfoCommand: Char;
begin
  DatabaseInfoCommand := Char(isc_info_base_level);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                         IBLocalBufferLength, local_buffer), True);
  result := isc_vax_integer(@local_buffer[4], 1);
end;

function TIBDatabaseInfo.GetDBFileName: String;
var
  local_buffer: array[0..IBLocalBufferLength - 1] of Char;
  DatabaseInfoCommand: Char;
begin
  DatabaseInfoCommand := Char(isc_info_db_id);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                         IBLocalBufferLength, local_buffer), True);
  local_buffer[5 + Int(local_buffer[4])] := #0;
  result := String(PChar(@local_buffer[5]));
end;

function TIBDatabaseInfo.GetDBSiteName: String;
var
  local_buffer: array[0..IBBigLocalBufferLength - 1] of Char;
  p: PChar;
  DatabaseInfoCommand: Char;
begin
  DatabaseInfoCommand := Char(isc_info_db_id);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                        IBLocalBufferLength, local_buffer), True);
  p := @local_buffer[5 + Int(local_buffer[4])]; { DBSiteName Length }
  p := p + Int(p^) + 1;                         { End of DBSiteName }
  p^ := #0;                                     { Null it }
  result := String(PChar(@local_buffer[6 + Int(local_buffer[4])]));
end;

function TIBDatabaseInfo.GetDBImplementationNo: Long;
var
  local_buffer: array[0..IBLocalBufferLength - 1] of Char;
  DatabaseInfoCommand: Char;
begin
  DatabaseInfoCommand := Char(isc_info_implementation);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                        IBLocalBufferLength, local_buffer), True);
  result := isc_vax_integer(@local_buffer[3], 1);
end;

function TIBDatabaseInfo.GetDBImplementationClass: Long;
var
  local_buffer: array[0..IBLocalBufferLength - 1] of Char;
  DatabaseInfoCommand: Char;
begin
  DatabaseInfoCommand := Char(isc_info_implementation);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                         IBLocalBufferLength, local_buffer), True);
  result := isc_vax_integer(@local_buffer[4], 1);
end;

function TIBDatabaseInfo.GetNoReserve: Long;
begin
  result := GetLongDatabaseInfo(isc_info_no_reserve);
end;

function TIBDatabaseInfo.GetODSMinorVersion: Long;
begin
  result := GetLongDatabaseInfo(isc_info_ods_minor_version);
end;

function TIBDatabaseInfo.GetODSMajorVersion: Long;
begin
  result := GetLongDatabaseInfo(isc_info_ods_version);
end;

function TIBDatabaseInfo.GetPageSize: Long;
begin
  result := GetLongDatabaseInfo(isc_info_page_size);
end;

function TIBDatabaseInfo.GetVersion: String;
var
  local_buffer: array[0..IBBigLocalBufferLength - 1] of Char;
  DatabaseInfoCommand: Char;
begin
  DatabaseInfoCommand := Char(isc_info_version);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                        IBBigLocalBufferLength, local_buffer), True);
  local_buffer[5 + Int(local_buffer[4])] := #0;
  result := String(PChar(@local_buffer[5]));
end;

function TIBDatabaseInfo.GetCurrentMemory: Long;
begin
  result := GetLongDatabaseInfo(isc_info_current_memory);
end;

function TIBDatabaseInfo.GetForcedWrites: Long;
begin
  result := GetLongDatabaseInfo(isc_info_forced_writes);
end;

function TIBDatabaseInfo.GetMaxMemory: Long;
begin
  result := GetLongDatabaseInfo(isc_info_max_memory);
end;

function TIBDatabaseInfo.GetNumBuffers: Long;
begin
  result := GetLongDatabaseInfo(isc_info_num_buffers);
end;

function TIBDatabaseInfo.GetSweepInterval: Long; 
begin
  result := GetLongDatabaseInfo(isc_info_sweep_interval);
end;

function TIBDatabaseInfo.GetUserNames: TStringList;
var
  local_buffer: array[0..IBHugeLocalBufferLength - 1] of Char;
  temp_buffer: array[0..IBLocalBufferLength - 2] of Char;
  DatabaseInfoCommand: Char;
  i, user_length: Integer;
begin
  result := FUserNames;
  DatabaseInfoCommand := Char(isc_info_user_names);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                        IBHugeLocalBufferLength, local_buffer), True);
  FUserNames.Clear;
  i := 0;
  while local_buffer[i] = Char(isc_info_user_names) do
  begin
    Inc(i, 3); { skip "isc_info_user_names byte" & two unknown bytes of structure (see below) }
    user_length := Long(local_buffer[i]);
    Inc(i,1);
    Move(local_buffer[i], temp_buffer[0], user_length);
    Inc(i, user_length);
    temp_buffer[user_length] := #0;
    FUserNames.Add(String(temp_buffer));
  end;
end;

function TIBDatabaseInfo.GetFetches: Long;
begin
  result := GetLongDatabaseInfo(isc_info_fetches);
end;

function TIBDatabaseInfo.GetMarks: Long;
begin
  result := GetLongDatabaseInfo(isc_info_marks);
end;

function TIBDatabaseInfo.GetReads: Long;
begin
  result := GetLongDatabaseInfo(isc_info_reads);
end;

function TIBDatabaseInfo.GetWrites: Long;
begin
  result := GetLongDatabaseInfo(isc_info_writes);
end;

function TIBDatabaseInfo.GetOperationCounts(DBInfoCommand: Integer; FOperation: TStringList): TStringList;
var
  local_buffer: array[0..IBHugeLocalBufferLength - 1] of Char;
  DatabaseInfoCommand: Char;
  i, qtd_tables, id_table, qtd_operations: Integer;
begin
  if FOperation = nil then FOperation := TStringList.Create;
  result := FOperation;
  DatabaseInfoCommand := Char(DBInfoCommand);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                         IBHugeLocalBufferLength, local_buffer), True);
  FOperation.Clear;
  { 1. 1 byte specifying the item type requested (e.g., isc_info_insert_count).
    2. 2 bytes telling how many bytes compose the subsequent value pairs.
    3. A pair of values for each table in the database on wich the requested
      type of operation has occurred since the database was last attached.
    Each pair consists of:
    1. 2 bytes specifying the table ID.
    2. 4 bytes listing the number of operations (e.g., inserts) done on that table.
  }
  qtd_tables := trunc(isc_vax_integer(@local_buffer[1],2)/6);
  for i := 0 to qtd_tables - 1 do
  begin
    id_table := isc_vax_integer(@local_buffer[3+(i*6)],2);
    qtd_operations := isc_vax_integer(@local_buffer[5+(i*6)],4);
    FOperation.Add(IntToStr(id_table)+'='+IntToStr(qtd_operations));
  end;
end;

function TIBDatabaseInfo.GetBackoutCount: TStringList;
begin
  result := GetOperationCounts(isc_info_backout_count,FBackoutCount);
end;

function TIBDatabaseInfo.GetDeleteCount: TStringList;
begin
  result := GetOperationCounts(isc_info_delete_count,FDeleteCount);
end;

function TIBDatabaseInfo.GetExpungeCount: TStringList;
begin
  result := GetOperationCounts(isc_info_expunge_count,FExpungeCount);
end;

function TIBDatabaseInfo.GetInsertCount: TStringList;
begin
  result := GetOperationCounts(isc_info_insert_count,FInsertCount);
end;

function TIBDatabaseInfo.GetPurgeCount: TStringList;
begin
  result := GetOperationCounts(isc_info_purge_count,FPurgeCount);
end;

function TIBDatabaseInfo.GetReadIdxCount: TStringList;
begin
  result := GetOperationCounts(isc_info_read_idx_count,FReadIdxCount);
end;

function TIBDatabaseInfo.GetReadSeqCount: TStringList;
begin
  result := GetOperationCounts(isc_info_read_seq_count,FReadSeqCount);
end;

function TIBDatabaseInfo.GetUpdateCount: TStringList;
begin
  result := GetOperationCounts(isc_info_update_count,FUpdateCount);
end;

function TIBDatabaseInfo.GetReadOnly: Long;
begin
  result := GetLongDatabaseInfo(isc_info_db_read_only);
end;

function TIBDatabaseInfo.GetLongDatabaseInfo(DatabaseInfoCommand: Integer): Long;
var
  local_buffer: array[0..IBLocalBufferLength - 1] of Char;
  length: Integer;
  _DatabaseInfoCommand: Char;
begin
  _DatabaseInfoCommand := Char(DatabaseInfoCommand);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @_DatabaseInfoCommand,
                         IBLocalBufferLength, local_buffer), True);
  length := isc_vax_integer(@local_buffer[1], 2);
  result := isc_vax_integer(@local_buffer[3], length);
end;

function TIBDatabaseInfo.GetStringDatabaseInfo(DatabaseInfoCommand: Integer): String;
var
  local_buffer: array[0..IBBigLocalBufferLength - 1] of Char;
  _DatabaseInfoCommand: Char;
begin
  _DatabaseInfoCommand := Char(DatabaseInfoCommand);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @_DatabaseInfoCommand,
                         IBBigLocalBufferLength, local_buffer), True);
  local_buffer[4 + Int(local_buffer[3])] := #0;
  result := String(PChar(@local_buffer[4]));
end;


function TIBDatabaseInfo.GetDBSQLDialect: Integer;
var
  local_buffer: array[0..IBLocalBufferLength - 1] of Char;
  length: Integer;
  DatabaseInfoCommand: Char;
begin
  DatabaseInfoCommand := Char(isc_info_db_SQL_Dialect);
  Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
                       IBLocalBufferLength, local_buffer), True);
  if (local_buffer[0] <> Char(isc_info_db_SQL_dialect)) then
    result := 1
  else begin
    length := isc_vax_integer(@local_buffer[1], 2);
    result := isc_vax_integer(@local_buffer[3], length);
  end;
end;


end.
Revision:	5
Committed:	Fri Feb 18 16:26:16 2011 UTC (13 years, 9 months ago) by tony
Content type:	text/x-pascal
File size:	16145 byte(s)
Log Message:	Committing updates for Release pre-release
#	User	Rev	Content
1	tony	1	{************************************************************************}
2			{ }
3			{ Borland Delphi Visual Component Library }
4			{ InterBase Express core components }
5			{ }
6			{ Copyright (c) 1998-2000 Inprise Corporation }
7			{ }
8			{ InterBase Express is based in part on the product }
9			{ Free IB Components, written by Gregory H. Deatz for }
10			{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
11			{ Free IB Components is used under license. }
12			{ }
13			{ The contents of this file are subject to the InterBase }
14			{ Public License Version 1.0 (the "License"); you may not }
15			{ use this file except in compliance with the License. You }
16			{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17			{ Software distributed under the License is distributed on }
18			{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
19			{ express or implied. See the License for the specific language }
20			{ governing rights and limitations under the License. }
21			{ Portions created by Inprise Corporation are Copyright (C) Inprise }
22			{ Corporation. All Rights Reserved. }
23			{ Contributor(s): Jeff Overcash }
24			{ }
25			{************************************************************************}
26
27			unit IBDatabaseInfo;
28
29	tony	5	{$Mode Delphi}
30
31	tony	1	interface
32
33			uses
34	tony	5	SysUtils, Classes, IBHeader, IBExternals, IB, IBDatabase;
35	tony	1
36			type
37
38			TIBDatabaseInfo = class(TComponent)
39			protected
40			FIBLoaded: Boolean;
41			FDatabase: TIBDatabase;
42			FUserNames : TStringList;
43			FBackoutCount: TStringList;
44			FDeleteCount: TStringList;
45			FExpungeCount: TStringList;
46			FInsertCount: TStringList;
47			FPurgeCount: TStringList;
48			FReadIdxCount: TStringList;
49			FReadSeqCount: TStringList;
50			FUpdateCount: TStringList;
51			function GetAllocation: Long;
52			function GetBaseLevel: Long;
53			function GetDBFileName: String;
54			function GetDBSiteName: String;
55			function GetDBImplementationNo: Long;
56			function GetDBImplementationClass: Long;
57			function GetNoReserve: Long;
58			function GetODSMinorVersion: Long;
59			function GetODSMajorVersion: Long;
60			function GetPageSize: Long;
61			function GetVersion: String;
62			function GetCurrentMemory: Long;
63			function GetForcedWrites: Long;
64			function GetMaxMemory: Long;
65			function GetNumBuffers: Long;
66			function GetSweepInterval: Long;
67			function GetUserNames: TStringList;
68			function GetFetches: Long;
69			function GetMarks: Long;
70			function GetReads: Long;
71			function GetWrites: Long;
72			function GetBackoutCount: TStringList;
73			function GetDeleteCount: TStringList;
74			function GetExpungeCount: TStringList;
75			function GetInsertCount: TStringList;
76			function GetPurgeCount: TStringList;
77			function GetReadIdxCount: TStringList;
78			function GetReadSeqCount: TStringList;
79			function GetUpdateCount: TStringList;
80			function GetOperationCounts(DBInfoCommand: Integer; FOperation: TStringList): TStringList;
81			function GetReadOnly: Long;
82			function GetStringDatabaseInfo(DatabaseInfoCommand: Integer): String;
83			function GetDBSQLDialect: Long;
84			public
85			constructor Create(AOwner: TComponent); override;
86			destructor Destroy; override;
87			function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
88	tony	5	function GetLongDatabaseInfo(DatabaseInfoCommand: Integer): Long;
89	tony	1	property Allocation: Long read GetAllocation;
90			property BaseLevel: Long read GetBaseLevel;
91			property DBFileName: String read GetDBFileName;
92			property DBSiteName: String read GetDBSiteName;
93			property DBImplementationNo: Long read GetDBImplementationNo;
94			property DBImplementationClass: Long read GetDBImplementationClass;
95			property NoReserve: Long read GetNoReserve;
96			property ODSMinorVersion: Long read GetODSMinorVersion;
97			property ODSMajorVersion: Long read GetODSMajorVersion;
98			property PageSize: Long read GetPageSize;
99			property Version: String read GetVersion;
100			property CurrentMemory: Long read GetCurrentMemory;
101			property ForcedWrites: Long read GetForcedWrites;
102			property MaxMemory: Long read GetMaxMemory;
103			property NumBuffers: Long read GetNumBuffers;
104			property SweepInterval: Long read GetSweepInterval;
105			property UserNames: TStringList read GetUserNames;
106			property Fetches: Long read GetFetches;
107			property Marks: Long read GetMarks;
108			property Reads: Long read GetReads;
109			property Writes: Long read GetWrites;
110			property BackoutCount: TStringList read GetBackoutCount;
111			property DeleteCount: TStringList read GetDeleteCount;
112			property ExpungeCount: TStringList read GetExpungeCount;
113			property InsertCount: TStringList read GetInsertCount;
114			property PurgeCount: TStringList read GetPurgeCount;
115			property ReadIdxCount: TStringList read GetReadIdxCount;
116			property ReadSeqCount: TStringList read GetReadSeqCount;
117			property UpdateCount: TStringList read GetUpdateCount;
118			property DBSQLDialect : Long read GetDBSQLDialect;
119			property ReadOnly: Long read GetReadOnly;
120			published
121			property Database: TIBDatabase read FDatabase write FDatabase;
122			end;
123
124			implementation
125
126			uses
127			IBIntf;
128
129			{ TIBDatabaseInfo }
130
131			constructor TIBDatabaseInfo.Create(AOwner: TComponent);
132			begin
133			inherited Create(AOwner);
134			FIBLoaded := False;
135			CheckIBLoaded;
136			FIBLoaded := True;
137			FUserNames := TStringList.Create;
138			FBackoutCount := nil;
139			FDeleteCount := nil;
140			FExpungeCount := nil;
141			FInsertCount := nil;
142			FPurgeCount := nil;
143			FReadIdxCount := nil;
144			FReadSeqCount := nil;
145			FUpdateCount := nil;
146			end;
147
148			destructor TIBDatabaseInfo.Destroy;
149			begin
150			if FIBLoaded then
151			begin
152			FUserNames.Free;
153			FBackoutCount.Free;
154			FDeleteCount.Free;
155			FExpungeCount.Free;
156			FInsertCount.Free;
157			FPurgeCount.Free;
158			FReadIdxCount.Free;
159			FReadSeqCount.Free;
160			FUpdateCount.Free;
161			end;
162			inherited Destroy;
163			end;
164
165
166			function TIBDatabaseInfo.Call(ErrCode: ISC_STATUS;
167			RaiseError: Boolean): ISC_STATUS;
168			begin
169			result := ErrCode;
170			if RaiseError and (ErrCode > 0) then
171			IBDataBaseError;
172			end;
173			function TIBDatabaseInfo.GetAllocation: Long;
174			begin
175			result := GetLongDatabaseInfo(isc_info_allocation);
176			end;
177
178			function TIBDatabaseInfo.GetBaseLevel: Long;
179			var
180			local_buffer: array[0..IBLocalBufferLength - 1] of Char;
181			DatabaseInfoCommand: Char;
182			begin
183			DatabaseInfoCommand := Char(isc_info_base_level);
184			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
185			IBLocalBufferLength, local_buffer), True);
186			result := isc_vax_integer(@local_buffer[4], 1);
187			end;
188
189			function TIBDatabaseInfo.GetDBFileName: String;
190			var
191			local_buffer: array[0..IBLocalBufferLength - 1] of Char;
192			DatabaseInfoCommand: Char;
193			begin
194			DatabaseInfoCommand := Char(isc_info_db_id);
195			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
196			IBLocalBufferLength, local_buffer), True);
197			local_buffer[5 + Int(local_buffer[4])] := #0;
198			result := String(PChar(@local_buffer[5]));
199			end;
200
201			function TIBDatabaseInfo.GetDBSiteName: String;
202			var
203			local_buffer: array[0..IBBigLocalBufferLength - 1] of Char;
204			p: PChar;
205			DatabaseInfoCommand: Char;
206			begin
207			DatabaseInfoCommand := Char(isc_info_db_id);
208			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
209			IBLocalBufferLength, local_buffer), True);
210			p := @local_buffer[5 + Int(local_buffer[4])]; { DBSiteName Length }
211			p := p + Int(p^) + 1; { End of DBSiteName }
212			p^ := #0; { Null it }
213			result := String(PChar(@local_buffer[6 + Int(local_buffer[4])]));
214			end;
215
216			function TIBDatabaseInfo.GetDBImplementationNo: Long;
217			var
218			local_buffer: array[0..IBLocalBufferLength - 1] of Char;
219			DatabaseInfoCommand: Char;
220			begin
221			DatabaseInfoCommand := Char(isc_info_implementation);
222			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
223			IBLocalBufferLength, local_buffer), True);
224			result := isc_vax_integer(@local_buffer[3], 1);
225			end;
226
227			function TIBDatabaseInfo.GetDBImplementationClass: Long;
228			var
229			local_buffer: array[0..IBLocalBufferLength - 1] of Char;
230			DatabaseInfoCommand: Char;
231			begin
232			DatabaseInfoCommand := Char(isc_info_implementation);
233			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
234			IBLocalBufferLength, local_buffer), True);
235			result := isc_vax_integer(@local_buffer[4], 1);
236			end;
237
238			function TIBDatabaseInfo.GetNoReserve: Long;
239			begin
240			result := GetLongDatabaseInfo(isc_info_no_reserve);
241			end;
242
243			function TIBDatabaseInfo.GetODSMinorVersion: Long;
244			begin
245			result := GetLongDatabaseInfo(isc_info_ods_minor_version);
246			end;
247
248			function TIBDatabaseInfo.GetODSMajorVersion: Long;
249			begin
250			result := GetLongDatabaseInfo(isc_info_ods_version);
251			end;
252
253			function TIBDatabaseInfo.GetPageSize: Long;
254			begin
255			result := GetLongDatabaseInfo(isc_info_page_size);
256			end;
257
258			function TIBDatabaseInfo.GetVersion: String;
259			var
260			local_buffer: array[0..IBBigLocalBufferLength - 1] of Char;
261			DatabaseInfoCommand: Char;
262			begin
263			DatabaseInfoCommand := Char(isc_info_version);
264			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
265			IBBigLocalBufferLength, local_buffer), True);
266			local_buffer[5 + Int(local_buffer[4])] := #0;
267			result := String(PChar(@local_buffer[5]));
268			end;
269
270			function TIBDatabaseInfo.GetCurrentMemory: Long;
271			begin
272			result := GetLongDatabaseInfo(isc_info_current_memory);
273			end;
274
275			function TIBDatabaseInfo.GetForcedWrites: Long;
276			begin
277			result := GetLongDatabaseInfo(isc_info_forced_writes);
278			end;
279
280			function TIBDatabaseInfo.GetMaxMemory: Long;
281			begin
282			result := GetLongDatabaseInfo(isc_info_max_memory);
283			end;
284
285			function TIBDatabaseInfo.GetNumBuffers: Long;
286			begin
287			result := GetLongDatabaseInfo(isc_info_num_buffers);
288			end;
289
290			function TIBDatabaseInfo.GetSweepInterval: Long;
291			begin
292			result := GetLongDatabaseInfo(isc_info_sweep_interval);
293			end;
294
295			function TIBDatabaseInfo.GetUserNames: TStringList;
296			var
297			local_buffer: array[0..IBHugeLocalBufferLength - 1] of Char;
298			temp_buffer: array[0..IBLocalBufferLength - 2] of Char;
299			DatabaseInfoCommand: Char;
300			i, user_length: Integer;
301			begin
302			result := FUserNames;
303			DatabaseInfoCommand := Char(isc_info_user_names);
304			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
305			IBHugeLocalBufferLength, local_buffer), True);
306			FUserNames.Clear;
307			i := 0;
308			while local_buffer[i] = Char(isc_info_user_names) do
309			begin
310			Inc(i, 3); { skip "isc_info_user_names byte" & two unknown bytes of structure (see below) }
311			user_length := Long(local_buffer[i]);
312			Inc(i,1);
313			Move(local_buffer[i], temp_buffer[0], user_length);
314			Inc(i, user_length);
315			temp_buffer[user_length] := #0;
316			FUserNames.Add(String(temp_buffer));
317			end;
318			end;
319
320			function TIBDatabaseInfo.GetFetches: Long;
321			begin
322			result := GetLongDatabaseInfo(isc_info_fetches);
323			end;
324
325			function TIBDatabaseInfo.GetMarks: Long;
326			begin
327			result := GetLongDatabaseInfo(isc_info_marks);
328			end;
329
330			function TIBDatabaseInfo.GetReads: Long;
331			begin
332			result := GetLongDatabaseInfo(isc_info_reads);
333			end;
334
335			function TIBDatabaseInfo.GetWrites: Long;
336			begin
337			result := GetLongDatabaseInfo(isc_info_writes);
338			end;
339
340			function TIBDatabaseInfo.GetOperationCounts(DBInfoCommand: Integer; FOperation: TStringList): TStringList;
341			var
342			local_buffer: array[0..IBHugeLocalBufferLength - 1] of Char;
343			DatabaseInfoCommand: Char;
344			i, qtd_tables, id_table, qtd_operations: Integer;
345			begin
346			if FOperation = nil then FOperation := TStringList.Create;
347			result := FOperation;
348			DatabaseInfoCommand := Char(DBInfoCommand);
349			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
350			IBHugeLocalBufferLength, local_buffer), True);
351			FOperation.Clear;
352			{ 1. 1 byte specifying the item type requested (e.g., isc_info_insert_count).
353			2. 2 bytes telling how many bytes compose the subsequent value pairs.
354			3. A pair of values for each table in the database on wich the requested
355			type of operation has occurred since the database was last attached.
356			Each pair consists of:
357			1. 2 bytes specifying the table ID.
358			2. 4 bytes listing the number of operations (e.g., inserts) done on that table.
359			}
360			qtd_tables := trunc(isc_vax_integer(@local_buffer[1],2)/6);
361			for i := 0 to qtd_tables - 1 do
362			begin
363			id_table := isc_vax_integer(@local_buffer[3+(i*6)],2);
364			qtd_operations := isc_vax_integer(@local_buffer[5+(i*6)],4);
365			FOperation.Add(IntToStr(id_table)+'='+IntToStr(qtd_operations));
366			end;
367			end;
368
369			function TIBDatabaseInfo.GetBackoutCount: TStringList;
370			begin
371			result := GetOperationCounts(isc_info_backout_count,FBackoutCount);
372			end;
373
374			function TIBDatabaseInfo.GetDeleteCount: TStringList;
375			begin
376			result := GetOperationCounts(isc_info_delete_count,FDeleteCount);
377			end;
378
379			function TIBDatabaseInfo.GetExpungeCount: TStringList;
380			begin
381			result := GetOperationCounts(isc_info_expunge_count,FExpungeCount);
382			end;
383
384			function TIBDatabaseInfo.GetInsertCount: TStringList;
385			begin
386			result := GetOperationCounts(isc_info_insert_count,FInsertCount);
387			end;
388
389			function TIBDatabaseInfo.GetPurgeCount: TStringList;
390			begin
391			result := GetOperationCounts(isc_info_purge_count,FPurgeCount);
392			end;
393
394			function TIBDatabaseInfo.GetReadIdxCount: TStringList;
395			begin
396			result := GetOperationCounts(isc_info_read_idx_count,FReadIdxCount);
397			end;
398
399			function TIBDatabaseInfo.GetReadSeqCount: TStringList;
400			begin
401			result := GetOperationCounts(isc_info_read_seq_count,FReadSeqCount);
402			end;
403
404			function TIBDatabaseInfo.GetUpdateCount: TStringList;
405			begin
406			result := GetOperationCounts(isc_info_update_count,FUpdateCount);
407			end;
408
409			function TIBDatabaseInfo.GetReadOnly: Long;
410			begin
411			result := GetLongDatabaseInfo(isc_info_db_read_only);
412			end;
413
414			function TIBDatabaseInfo.GetLongDatabaseInfo(DatabaseInfoCommand: Integer): Long;
415			var
416			local_buffer: array[0..IBLocalBufferLength - 1] of Char;
417			length: Integer;
418			_DatabaseInfoCommand: Char;
419			begin
420			_DatabaseInfoCommand := Char(DatabaseInfoCommand);
421			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @_DatabaseInfoCommand,
422			IBLocalBufferLength, local_buffer), True);
423			length := isc_vax_integer(@local_buffer[1], 2);
424			result := isc_vax_integer(@local_buffer[3], length);
425			end;
426
427			function TIBDatabaseInfo.GetStringDatabaseInfo(DatabaseInfoCommand: Integer): String;
428			var
429			local_buffer: array[0..IBBigLocalBufferLength - 1] of Char;
430			_DatabaseInfoCommand: Char;
431			begin
432			_DatabaseInfoCommand := Char(DatabaseInfoCommand);
433			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @_DatabaseInfoCommand,
434			IBBigLocalBufferLength, local_buffer), True);
435			local_buffer[4 + Int(local_buffer[3])] := #0;
436			result := String(PChar(@local_buffer[4]));
437			end;
438
439
440			function TIBDatabaseInfo.GetDBSQLDialect: Integer;
441			var
442			local_buffer: array[0..IBLocalBufferLength - 1] of Char;
443			length: Integer;
444			DatabaseInfoCommand: Char;
445			begin
446			DatabaseInfoCommand := Char(isc_info_db_SQL_Dialect);
447			Call(isc_database_info(StatusVector, @FDatabase.Handle, 1, @DatabaseInfoCommand,
448			IBLocalBufferLength, local_buffer), True);
449			if (local_buffer[0] <> Char(isc_info_db_SQL_dialect)) then
450			result := 1
451			else begin
452			length := isc_vax_integer(@local_buffer[1], 2);
453			result := isc_vax_integer(@local_buffer[3], length);
454			end;
455			end;
456
457
458			end.