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querywindow.pas
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querywindow.pas
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unit QueryWindow;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, IBConnection, db, sqldb, FileUtil, LResources, Forms,
Controls, Graphics, Dialogs, ExtCtrls, PairSplitter, StdCtrls, Buttons,
DBGrids, Menus, ComCtrls, SynEdit, SynHighlighterSQL, Reg,
SynEditTypes, SynCompletion, Clipbrd, grids, DbCtrls, types, LCLType,
dbugintf, turbocommon, variants, strutils, IniFiles;
type
TQueryTypes = (
qtUnknown=0,
qtSelectable=1,
qtExecute=2,
qtScript=3);
TQueryActions = (
qaCommit,
qaCommitRet,
qaRollBack,
qaRollbackRet,
qaOpen,
qaDDL,
qaExec );
{ TQueryThread }
TQueryThread = class(TThread)
private
FSQLQuery: TSQLQuery;
FTrans: TSQLTransaction;
FConnection: TIBConnection;
public
Error: Boolean;
ErrorMsg: string;
fTerminated: Boolean;
fType: TQueryActions;
fStatement: string;
property Query: TSQLQuery read FSQLQuery write FSQLQuery;
property Trans: TSQLTransaction read FTrans write FTrans;
property Connection: TIBConnection read FConnection write FConnection;
property Statement: String read fStatement write fStatement;
procedure DoJob;
procedure Execute; override;
constructor Create(aType: TQueryActions);
end;
{ TfmQueryWindow }
TfmQueryWindow = class(TForm)
cxAutoCommit: TCheckBox;
FindDialog1: TFindDialog;
bbClose: TSpeedButton;
FontDialog1: TFontDialog;
sbMeQuery: TStatusBar;
toolbarImages: TImageList;
imTools: TImageList;
imTabs: TImageList;
lmCloseTab: TMenuItem;
lmCopy: TMenuItem;
lmPaste: TMenuItem;
lmSelectAll: TMenuItem;
lmUndo: TMenuItem;
MainMenu1: TMainMenu;
MenuItem1: TMenuItem;
MenuItem10: TMenuItem;
lmCut: TMenuItem;
lmExport: TMenuItem;
lmCommaDelimited: TMenuItem;
lmHTML: TMenuItem;
lmRedo: TMenuItem;
MenuItem2: TMenuItem;
lmFind: TMenuItem;
lmFindAgain: TMenuItem;
MenuItem3: TMenuItem;
lmCopyCell: TMenuItem;
lmExportAsComma: TMenuItem;
lmExportAsHTML: TMenuItem;
lmCopyAll: TMenuItem;
MenuItem5: TMenuItem;
lmRun: TMenuItem;
lmRunSelect: TMenuItem;
lmRunExec: TMenuItem;
lmRunScript: TMenuItem;
OpenDialog1: TOpenDialog;
pgOutputPageCtl: TPageControl;
Panel1: TPanel;
pnlOutputPanel: TPanel;
pmTab: TPopupMenu;
pmMemo: TPopupMenu;
pmGrid: TPopupMenu;
SaveDialog1: TSaveDialog;
Splitter1: TSplitter;
meQuery: TSynEdit;
SynCompletion1: TSynCompletion;
SynSQLSyn1: TSynSQLSyn;
ToolBar1: TToolBar;
tbNew: TToolButton;
tbOpen: TToolButton;
tbSave: TToolButton;
tbRun: TToolButton;
tbCommit: TToolButton;
tbRollback: TToolButton;
tbCommitRetaining: TToolButton;
tbRollbackRetaining: TToolButton;
ToolButton1: TToolButton;
ToolButton2: TToolButton;
ToolButton3: TToolButton;
tbHistory: TToolButton;
ToolButton5: TToolButton;
tbMenu: TToolButton;
procedure bbRunClick(Sender: TObject);
procedure DBGrid1DblClick(Sender: TObject);
procedure DBGridTitleClick(column: TColumn);
procedure FindDialog1Find(Sender: TObject);
procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
procedure FormShow(Sender: TObject);
procedure lmCloseTabClick(Sender: TObject);
procedure lmCommaDelimitedClick(Sender: TObject);
procedure lmCopyAllClick(Sender: TObject);
procedure lmCopyCellClick(Sender: TObject);
procedure lmCopyClick(Sender: TObject);
procedure lmCutClick(Sender: TObject);
procedure lmExportAsCommaClick(Sender: TObject);
procedure lmExportAsHTMLClick(Sender: TObject);
procedure lmHTMLClick(Sender: TObject);
procedure lmPasteClick(Sender: TObject);
procedure lmRedoClick(Sender: TObject);
procedure lmRunClick(Sender: TObject);
procedure lmRunExecClick(Sender: TObject);
procedure lmRunScriptClick(Sender: TObject);
procedure lmRunSelectClick(Sender: TObject);
procedure lmSelectAllClick(Sender: TObject);
procedure lmUndoClick(Sender: TObject);
procedure lmFindClick(Sender: TObject);
procedure lmFindAgainClick(Sender: TObject);
procedure meQueryClick(Sender: TObject);
procedure meQueryKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
procedure SQLScript1Exception(Sender: TObject; Statement: TStrings;
TheException: Exception; var Continue: boolean);
procedure SynCompletion1CodeCompletion(var Value: string;
SourceValue: string; var SourceStart, SourceEnd: TPoint;
KeyChar: TUTF8Char; Shift: TShiftState);
procedure tbCloseClick(Sender: TObject);
procedure tbCommitClick(Sender: TObject);
procedure tbCommitRetainingClick(Sender: TObject);
procedure tbHistoryClick(Sender: TObject);
procedure tbMenuClick(Sender: TObject);
procedure tbNewClick(Sender: TObject);
procedure tbOpenClick(Sender: TObject);
procedure tbRollbackClick(Sender: TObject);
procedure tbRollbackRetainingClick(Sender: TObject);
procedure tbRunClick(Sender: TObject);
procedure tbSaveClick(Sender: TObject);
private
{ private declarations }
FDBIndex: Integer; // Index of selected registered database
FRegRec: TRegisteredDatabase;
FOptions: set of TSynSearchOption;
FIBConnection: TIBConnection;
FSQLTrans: TSQLTransaction;
FCanceled: Boolean;
FStartLine: Integer;
FQuery: TStringList; //query text
FOrigQueryType: TQueryTypes;
FFinished: Boolean;
FQT: TQueryThread;
FQueryPart: string;
FTab: TTabSheet;
FResultMemo: TMemo;
FSQLScript: TSQLScript;
// Text for caption
FAText: string;
FModifyCount: Integer;
FCounter: Integer;
OutputTabsList: TStrings;
// Makes commit button in current tabsheet visible
procedure EnableCommitButton;
procedure ExecuteQuery;
function GetNewTabNum: string;
// Gets TSQLQuery of current result tabsheet - only if it is a select query
function GetCurrentSelectQuery: TSQLQuery;
// Gets both querytype and whether SQL is DML or DDL
// Investigates QueryList[LookAtIndex] to find out
function GetQuerySQLType(QueryList: TStringList; var LookAtIndex: Integer;
var IsDDL: Boolean): TQueryTypes;
procedure NewCommitButton(const Pan: TPanel; var ATab: TTabSheet);
procedure RemoveComments(QueryList: TStringList; StartLine: Integer;
var RealStartLine: Integer);
procedure RemoveAllSingleLineComments(QueryList: TStringList);
procedure RemoveEmptyLines(QueryList: TStringList;
var SecondRealStart: Integer; const RealStartLine: Integer);
procedure ApplyClick(Sender: TObject);
procedure EnableApplyButton;
function GetTableName(SQLText: string): string;
procedure CommitResultClick(Sender: TObject);
procedure RemovePreviousResultTabs;
protected
// This procedure will receive the events that are logged by the connection:
procedure GetLogEvent(Sender: TSQLConnection; EventType: TDBEventType; Const Msg : String);
public
OnCommit: TNotifyEvent;
procedure Init(dbIndex: Integer);
function GetQueryType(AQuery: string): TQueryTypes;
// Get query text from GUI/memo into
// QueryContents
function GetQuery(QueryContents: tstrings): boolean;
function CreateResultTab(QueryType: TQueryTypes; var aSqlQuery: TSQLQuery; var aSQLScript: TSQLScript;
var meResult: TMemo; AdditionalTitle: string = ''): TTabSheet;
// Runs SQL script; returns result
function ExecuteScript(Script: string): Boolean;
// Create a new Apply button in the specified panel
procedure NewApplyButton(var Pan: TPanel; var ATab: TTabSheet);
// Returns whether query is DDL or DML
function GetSQLType(Query: string; var Command: string): string;
// Tries to split up text into separate queries
function GetSQLSegment(QueryList: TStringList; StartLine: Integer;
var QueryType: TQueryTypes; var EndLine: Integer;
var SQLSegment: string; var IsDDL: Boolean): Boolean;
procedure QueryAfterPost(DataSet: TDataSet);
procedure QueryAfterScroll(DataSet: TDataSet);
// Run query; use aQueryType to force running as e.g. script or open query
procedure CallExecuteQuery(aQueryType: TQueryTypes);
procedure SortSynCompletion;
procedure ThreadTerminated(Sender: TObject);
procedure EnableButtons;
{ public declarations }
end;
var
fmQueryWindow: TfmQueryWindow;
implementation
uses main, SQLHistory;
{ TfmQueryWindow }
{ NewCommitButton: Create commit button for editable query result }
procedure TfmQueryWindow.NewCommitButton(const Pan: TPanel; var ATab: TTabSheet);
var
Commit: TBitBtn;
begin
Commit:= TBitBtn.Create(self);
Commit.Parent:= Pan;
Commit.Caption:= 'Commit'; //don't change this; code looks for this exact caption
Commit.Left:= 400;
Commit.Visible:= False;
Commit.OnClick:= @CommitResultClick;
Commit.Tag:= ATab.TabIndex;
end;
{ RemoveComments: Remove comments from Query window }
procedure TfmQueryWindow.RemoveComments(QueryList: TStringList; StartLine: Integer; var RealStartLine: Integer);
var
Comment: Boolean;
i: Integer;
MultiComment: Boolean;
begin
MultiComment:= False;
for i:= StartLine to QueryList.Count - 1 do
begin
if Pos('/*', Trim(QueryList[i])) = 1 then
begin
MultiComment:= True;
Comment:= False;
end;
// Avoid checking for comments if there's any chance they're within
// a string literal e.g. select 'this is -- no -- comment' from rdb$database
if (not MultiComment) and (pos('''',QueryList[i])=0) then
Comment:= Pos('--', Trim(QueryList[i])) = 1;
if (Trim(QueryList[i]) <> '') and (not Comment) and (not MultiComment) then
begin
RealStartLine:= i;
Break;
end;
if MultiComment and (Pos('*/', QueryList[i]) > 0) then // End of multi-line comment
begin
QueryList[i]:= Trim(Copy(QueryList[i], Pos('*/', QueryList[i]) + 2, Length
(QueryList[i])));
RealStartLine:= i;
MultiComment:= False;
Comment:= False;
if (i = QueryList.Count - 1) or
((Trim(QueryList[i + 1]) <> '') and (Pos('/*', Trim(QueryList[i + 1])
) <> 1) and
(Pos('--', Trim(QueryList[i + 1])) <> 1)) then
Break;
end;
end;
end;
{ RemoveAllSingleLineComments: remove single line comments from query }
procedure TfmQueryWindow.RemoveAllSingleLineComments(QueryList: TStringList);
var
i: Integer;
begin
for i:= QueryList.Count - 1 downto 0 do
begin
if Pos('--', QueryList[i]) > 0 then
begin
if Pos('--', Trim(QueryList[i])) = 1 then
QueryList.Delete(i);
{
else
// this will also pick up -- within string literals which is wrong
QueryList[i]:= Copy(QueryList[i], 1, Pos('--', QueryList[i]) - 1);
}
end;
end;
end;
{ RemoveEmptyLines: remove empty lines in query }
procedure TfmQueryWindow.RemoveEmptyLines(QueryList: TStringList; var SecondRealStart: Integer;
const RealStartLine: Integer);
var
i: integer;
begin
for i:= RealStartLine to QueryList.Count - 1 do
begin
if Trim(QueryList[i]) <> '' then
begin
SecondRealStart:= i;
Break;
end;
end;
end;
{ ApplyClick: Save Updates for the query }
procedure TfmQueryWindow.ApplyClick(Sender: TObject);
var
i, x: Integer;
TableName: string;
UpdateQuery: TSQLQuery;
PKIndexName: string;
ConstraintName: string;
KeyList, FieldsList: TStringList;
WhereClause: string;
UserData: TSQLQuery;
TabIndex: Integer;
FieldsSQL: string;
begin
try
TabIndex:= pgOutputPageCtl.TabIndex;
UserData:= nil;
UserData:= GetCurrentSelectQuery;
// Better safe than sorry
if not(Assigned(UserData)) then
begin
ShowMessage('Error getting query from tabsheet.');
{$IFDEF DEBUG}
SendDebug('ApplyClick: GetRecordSet call returned nil recordset');
{$ENDIF}
exit;
end;
UserData.ApplyUpdates; // lets query run InsertSQL, UpdateSQL, DeleteSQL
(Sender as TBitBtn).Visible:= False;
// Auto commit
if cxAutoCommit.Checked then
FSQLTrans.Commit
else
EnableCommitButton;
UserData.EnableControls;
except
on E: Exception do
begin
ShowMessage('Error trying to save data: ' + e.Message);
end;
end;
end;
{ EnableApplyButton: enable save updates button on current tab when records have been modified }
procedure TfmQueryWindow.EnableApplyButton;
var
i: Integer;
Ctl: TControl;
ParentPanel: TPanel;
begin
// The page has a panel that contains the button
ParentPanel:=nil;
for i:= 0 to pgOutputPageCtl.ActivePage.ControlCount-1 do
begin
Ctl:=pgOutputPageCtl.ActivePage.Controls[i];
if Ctl is TPanel then
begin
ParentPanel:= TPanel(Ctl); //found
break;
end;
end;
// Found the hosting panel; this should have the Apply button
// as well as the commit button and the tdbnavigator
if assigned(ParentPanel) then
begin
for i:= 0 to ParentPanel.ControlCount-1 do
begin
Ctl:=ParentPanel.Controls[i];
if (Ctl is TBitBtn) and
((Ctl as TBitBtn).Caption = 'Apply') then
begin
(Ctl as TBitBtn).Visible:= true;
Break;
end;
end;
end;
end;
{ EnableCommitButton: enable commit button after applying updates }
procedure TfmQueryWindow.EnableCommitButton;
var
i: Integer;
Ctl: TControl;
ParentPanel: TPanel;
begin
// The page has a panel that contains the button
ParentPanel:=nil;
for i:= 0 to pgOutputPageCtl.ActivePage.ControlCount-1 do
begin
Ctl:=pgOutputPageCtl.ActivePage.Controls[i];
if Ctl is TPanel then
begin
ParentPanel:= TPanel(Ctl); //found
break;
end;
end;
// Found the hosting panel; this should have the Apply, Commit button
// as well as the navigator
if assigned(ParentPanel) then
begin
for i:= 0 to ParentPanel.ControlCount-1 do
begin
Ctl:=ParentPanel.Controls[i];
if (Ctl is TBitBtn) and
((Ctl as TBitBtn).Caption = 'Commit') then
begin
(Ctl as TBitBtn).Visible:= true;
Break;
end;
end;
end;
end;
{ GetTableName: get table name from query text }
function TfmQueryWindow.GetTableName(SQLText: string): string;
begin
SQLText:= Trim(Copy(SQLText, Pos('from', LowerCase(SQLText)) + 4, Length(SQLText)));
if Pos('"', SQLText) = 1 then
begin
Delete(SQLText, 1, 1);
Result:= Copy(SQLText, 1, Pos('"', SQLText) - 1);
end
else
begin
if Pos(' ', SQLText) > 0 then
Result:= Copy(SQLText, 1, Pos(' ', SQLText) - 1)
else
Result:= SQLText;
end;
if Pos(';', Result) > 0 then
Delete(Result, Pos(';', Result), 1);
end;
{ CommitResultClick: commit current transaction }
procedure TfmQueryWindow.CommitResultClick(Sender: TObject);
begin
FSQLTrans.CommitRetaining;
(Sender as TBitBtn).Visible:= False;
end;
procedure TfmQueryWindow.RemovePreviousResultTabs;
var
i: Integer;
begin
for i:= OutputTabsList.Count - 1 downto 0 do
begin
OutputTabsList.Objects[i].Free;
OutputTabsList.Delete(i);
end;
end;
procedure TfmQueryWindow.GetLogEvent(Sender: TSQLConnection;
EventType: TDBEventType; const Msg: String);
// Used to log everything sent through the connection
var
Source: string;
begin
case EventType of
detCustom: Source:='Custom: ';
detPrepare: Source:='Prepare: ';
detExecute: Source:='Execute: ';
detFetch: Source:='Fetch: ';
detCommit: Source:='Commit: ';
detRollBack: Source:='Rollback:';
else Source:='Unknown event. Please fix program code.';
end;
SendDebug(Source + Msg);
end;
{ GetCurrentSelectQuery: return result recordset of a page tab }
function TfmQueryWindow.GetCurrentSelectQuery: TSQLQuery;
var
i: Integer;
Ctl: TControl;
begin
// Tabsheet's tag property should point to any select query
Result:= nil;
if (pgOutputPageCtl.PageCount > 0) then
begin
if (pgOutputPageCtl.ActivePage.Tag<>0) then
begin
Result:= TSQLQuery(pgOutputPageCtl.ActivePage.Tag);
end;
end;
end;
{ GetQuerySQLType: get query type: select, script, execute from current string list }
function TfmQueryWindow.GetQuerySQLType(QueryList: TStringList; var LookAtIndex: Integer; var IsDDL: Boolean): TQueryTypes;
var
MassagedSQL: string;
begin
Result:= qtUnknown;
IsDDL:= False; //default
if LookAtIndex < QueryList.Count then
begin
MassagedSQL:= LowerCase(Trim(QueryList[LookAtIndex]));
// Script overrides rest
if Pos('set term', MassagedSQL) = 1 then
begin
// Using set term does not mean the SQL you're running has to be
// DDL (could be an execute block or something) but it most probably is
IsDDL:= true;
exit(qtScript);
end;
if (Pos('select', MassagedSQL) = 1) then
{ todo: (low priority) misses insert...returning,
update...returning, merge.. returning...}
Result:= qtSelectable
else
begin
Result:= qtExecute;
IsDDL:= (Pos('alter', MassagedSQL) = 1) or
(Pos('create', MassagedSQL) = 1) or
(Pos('drop', MassagedSQL) = 1) or
(Pos('grant', MassagedSQL) = 1) {actually DCL} or
(Pos('revoke', MassagedSQL) = 1) {actually DCL};
end;
end;
end;
{ TQueryThread }
{ DoJob: Execute thread job: open query, execute, commit, rollback, etc }
procedure TQueryThread.DoJob;
begin
try
if fType = qaOpen then
FSQLQuery.Open
else
if fType = qaExec then
FSQLQuery.ExecSQL
else
if fType = qaDDL then
FConnection.ExecuteDirect(fStatement)
else
if fType = qaCommit then
FTrans.Commit
else
if fType = qaCommitRet then
FTrans.CommitRetaining
else
if fType = qaRollBack then
FTrans.Rollback
else
if fType = qaRollbackRet then
FTrans.RollbackRetaining;
Error:= False;
fTerminated:= True;
except
on E: Exception do
begin
Error:= True;
ErrorMsg:= e.Message;
fTerminated:= True;
end;
end;
end;
{ Execute: Query thread main loop }
procedure TQueryThread.Execute;
begin
try
fTerminated:= False;
Error:= False;
DoJob;
fTerminated:= True;
except
on E: Exception do
begin
Error:= True;
ErrorMsg:= e.Message;
fTerminated:= True;
end;
end;
end;
{ Create query thread }
constructor TQueryThread.Create(aType: TQueryActions);
begin
inherited Create(True);
fType:= aType;
FreeOnTerminate:= False;
end;
{ Display SQL script exception message }
procedure TfmQueryWindow.SQLScript1Exception(Sender: TObject;
Statement: TStrings; TheException: Exception; var Continue: boolean);
begin
ShowMessage('Error running script: '+TheException.Message);
end;
procedure TfmQueryWindow.SynCompletion1CodeCompletion(var Value: string;
SourceValue: string; var SourceStart, SourceEnd: TPoint; KeyChar: TUTF8Char;
Shift: TShiftState);
begin
SynCompletion1.Deactivate;
end;
{ Close button pressed: close current Query window and free parent page tab }
procedure TfmQueryWindow.tbCloseClick(Sender: TObject);
begin
Close;
Parent.Free;
end;
{ Commit current transaction }
procedure TfmQueryWindow.tbCommitClick(Sender: TObject);
var
meResult: TMemo;
SqlQuery: TSQLQuery;
SqlScript: TSQLScript;
ATab: TTabSheet;
QT: TQueryThread;
begin
ATab:= CreateResultTab(qtExecute, SqlQuery, SqlScript, meResult);
QT:= TQueryThread.Create(qaCommit);
try
QT.Trans:= FSQLTrans;
ATab.ImageIndex:= 6;
// Run thread
QT.Resume;
repeat
application.ProcessMessages;
until QT.fTerminated;
if QT.Error then
begin
ATab.ImageIndex:= 3;
meResult.Lines.Text:= QT.ErrorMsg;
meResult.Font.Color:= clRed;
end
else
begin
ATab.ImageIndex:= 4;
meResult.Lines.Add('Commited');
meResult.Font.Color:= clGreen;
// Call OnCommit procedure if assigned, it is used to refresh table management view
if OnCommit <> nil then
OnCommit(self);
OnCommit:= nil;
end;
finally
QT.Free;
end;
end;
{ Commit retaining for current transaction }
procedure TfmQueryWindow.tbCommitRetainingClick(Sender: TObject);
var
QT: TQueryThread;
begin
QT:= TQueryThread.Create(qaCommitRet);
try
QT.Trans:= FSQLTrans;
// Run thread
QT.Resume;
repeat
application.ProcessMessages;
until QT.fTerminated;
if QT.Error then
ShowMessage('Error trying commit retaining: '+QT.ErrorMsg)
else
begin
// Call OnCommit procedure if assigned, it is used to refresh table management view
if OnCommit <> nil then
OnCommit(self);
OnCommit:= nil;
end;
finally
QT.Free;
end;
end;
{HistoryClick: show SQL history form }
procedure TfmQueryWindow.tbHistoryClick(Sender: TObject);
begin
fmSQLHistory.Init(FRegRec.Title, Self);
fmSQLHistory.Show;
end;
{ Display popup menu }
procedure TfmQueryWindow.tbMenuClick(Sender: TObject);
begin
pmTab.PopUp;
end;
{ display New SQL Window tab }
procedure TfmQueryWindow.tbNewClick(Sender: TObject);
var
i: Integer;
begin
// Get a free number to be assigned to the new Query window
for i:= 1 to 1000 do
begin
if fmMain.FindQueryWindow(FRegRec.Title + ': Query Window # ' + IntToStr(i)) = nil then
begin
fmMain.ShowCompleteQueryWindow(FDBIndex, 'Query Window # ' + IntToStr(i), '');
Break;
end;
end;
end;
{ Read SQL query from text file }
procedure TfmQueryWindow.tbOpenClick(Sender: TObject);
begin
OpenDialog1.DefaultExt:= '.sql';
if OpenDialog1.Execute then
meQuery.Lines.LoadFromFile(OpenDialog1.FileName);
end;
{ RollBack current transaction }
procedure TfmQueryWindow.tbRollbackClick(Sender: TObject);
var
meResult: TMemo;
SqlQuery: TSQLQuery;
SqlScript: TSQLScript;
ATab: TTabSheet;
QT: TQueryThread;
begin
ATab:= CreateResultTab(qtExecute, SqlQuery, SqlScript, meResult);
QT:= TQueryThread.Create(qaRollBack);
try
QT.Trans:= FSQLTrans;
ATab.ImageIndex:= 6;
QT.Resume;
repeat
application.ProcessMessages;
until QT.fTerminated;
if QT.Error then
begin
ATab.ImageIndex:= 3;
meResult.Lines.Text:= QT.ErrorMsg;
meResult.Font.Color:= clRed;
end
else
begin
ATab.ImageIndex:= 4;
meResult.Lines.Add('Rollback');
meResult.Font.Color:= clGreen;
if OnCommit <> nil then
OnCommit(self);
OnCommit:= nil;
meResult.Font.Color:= $AA6666;
end;
finally
QT.Free;
end;
end;
{ Rollback retaning for current transaction }
procedure TfmQueryWindow.tbRollbackRetainingClick(Sender: TObject);
var
QT: TQueryThread;
begin
QT:= TQueryThread.Create(qaRollbackRet);
try
QT.Trans:= FSQLTrans;
QT.Resume;
repeat
application.ProcessMessages;
until QT.fTerminated or (FCanceled);
if QT.Error then
ShowMessage('Error trying rollback retaining: '+QT.ErrorMsg);
finally
QT.Free;
end;
end;
{ Run current SQL, auto-detect type }
procedure TfmQueryWindow.tbRunClick(Sender: TObject);
begin
CallExecuteQuery(qtUnknown);
end;
{ Save current SQL in a text file }
procedure TfmQueryWindow.tbSaveClick(Sender: TObject);
begin
SaveDialog1.DefaultExt:= '.sql';
if SaveDialog1.Execute then
meQuery.Lines.SaveToFile(SaveDialog1.FileName);
end;
{GetNewTabNum: get last tab number and increase result by one }
function TfmQueryWindow.GetNewTabNum: string;
var
i: Integer;
Cnt: Integer;
begin
Cnt:= 0;
for i:= 0 to pgOutputPageCtl.ControlCount - 1 do
if pgOutputPageCtl.Pages[i].TabVisible then
Inc(Cnt);
Result:= IntToStr(Cnt);
end;
{ Initialize query window: fill connection parameters from selected registered database }
procedure TfmQueryWindow.Init(dbIndex: Integer);
begin
FDBIndex:= dbIndex;
FRegRec:= fmMain.RegisteredDatabases[dbIndex].RegRec;
// Remove old tabs in case of opening the same QueryWindow
if Assigned(OutputTabsList) then
RemovePreviousResultTabs
else
OutputTabsList:= TStringList.Create;
// Set instances of FIBConnection and SQLTransaction for the current Query Window
SetTransactionIsolation(FSQLTrans.Params);
FSQLTrans.DataBase:= FIBConnection;
// Set connection parameters to FIBConnection
with fmMain.RegisteredDatabases[dbIndex] do
begin
Self.FIBConnection.DatabaseName:= RegRec.DatabaseName;
Self.FIBConnection.UserName:= RegRec.UserName;
Self.FIBConnection.Password:= RegRec.Password;
Self.FIBConnection.CharSet:= RegRec.Charset;
Self.FIBConnection.Role:= RegRec.Role;
end;
// Get current database tables to be highlighted in SQL query editor
SynSQLSyn1.TableNames.CommaText:= fmMain.GetTableNames(dbIndex);
SynCompletion1.ItemList.AddStrings(SynSQLSyn1.TableNames);
SortSynCompletion;
end;
(************* Is Selectable (Check statement type Select, Update, Alter, etc) *******************)
function TfmQueryWindow.GetQueryType(AQuery: string): TQueryTypes;
var
List: TStringList;
i: Integer;
Line: string;
StartPos, EndPos: Integer;
begin
List:= TStringList.Create;
try
List.Text:= AQuery;
Result:= qtExecute; // Default Execute
for i:= 0 to List.Count - 1 do
begin
Line:= List[i];
// Remove comments
if Pos('--', Line) > 0 then
Line:= Copy(Line, 1, Pos('--', Line) - 1);
if (Pos('/*', Line) > 0) and (Pos('*/', Line) > 0) then
begin
StartPos:= (Pos('/*', Line));
EndPos:= (Pos('*/', Line));
Delete(Line, StartPos, EndPos - StartPos + 1);
end;
if (Pos('select', LowerCase(Trim(Line))) = 1) then
begin
Result:= qtSelectable; // Selectable
Break;
end
else
if Pos('set term', LowerCase(Trim(Line))) = 1 then
begin
Result:= qtScript;
Break;
end;
if Trim(Line) <> '' then
begin
Result:= qtExecute; // Executable
Break;
end;
end;
finally
List.Free;
end;
end;
{ GetQuery: get query text from editor }
function TfmQueryWindow.GetQuery(QueryContents: tstrings): boolean;
var
Seltext: string;
begin