DocMan/DocManDBfrm.cpp at main · mgaeckler1964/DocMan · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
/*
		Project:		DocMan
		Module:
		Description:
		Author:			Martin Gäckler
		Address:		Hofmannsthalweg 14, A-4030 Linz
		Web:			https://www.gaeckler.at/

		Copyright:		(c) 1988-2024 Martin Gäckler

		This program is free software: you can redistribute it and/or modify
		it under the terms of the GNU General Public License as published by
		the Free Software Foundation, version 3.

		You should have received a copy of the GNU General Public License
		along with this program. If not, see <http://www.gnu.org/licenses/>.

		THIS SOFTWARE IS PROVIDED BY Martin Gäckler, Austria, Linz ``AS IS''
		AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
		TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
		PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR
		CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
		SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
		LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
		USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
		ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
		OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
		OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
		SUCH DAMAGE.
*/

//---------------------------------------------------------------------------

#include <vcl.h>

#include <gak/array.h>
#pragma hdrstop

#include "DocManDBfrm.h"
//---------------------------------------------------------------------------
using namespace gak;
using namespace vcl;
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "dbConvertFrm"
#pragma resource "*.dfm"
TDocManDbConvertForm *DocManDbConvertForm;
//---------------------------------------------------------------------------
#pragma option -RT-
class DocmanDatabaseSchema : public DatabaseSchema
{
	bool refreshVolumeIDs;

	virtual void checkFieldsBeforePost( TDataSet *destTable, const STRING &tableName );
	virtual void closeTable( TDataSet *theTable, const STRING &tableName );

	public:
	DocmanDatabaseSchema()
	{
		refreshVolumeIDs = false;
	}
};
#pragma option -RT.
//---------------------------------------------------------------------------
void DocmanDatabaseSchema::checkFieldsBeforePost( TDataSet *destTable, const STRING &tableName )
{
	if( tableName == "ITEM_TREE" )
	{
		TField *volumeID = destTable->FieldByName( "VOLUME_ID" );
		if( volumeID->IsNull || volumeID->AsInteger == 0 )
		{
			int parentID = destTable->FieldByName( "PARENTID" )->AsInteger;
			if( parentID < 0 )
				volumeID->AsInteger = destTable->FieldByName( "ID" )->AsInteger;
			else
			{
				volumeID->AsInteger = 0;
				refreshVolumeIDs = true;
			}
		}
	}
}
//---------------------------------------------------------------------------
void DocmanDatabaseSchema::closeTable( TDataSet *theTable, const STRING &tableName )
{
	if( tableName == "ITEM_TREE" && refreshVolumeIDs )
	{
		int 		parentID, volumeID;
		ArrayOfInts	badParents;

		TQuery *theQuery = new TQuery( NULL );
		theQuery->DatabaseName = getDatabase()->DatabaseName;
		theQuery->SQL->Add( "select VOLUME_ID from ITEM_TREE where ID = :parentID" );

		TQuery *updateQuery = new TQuery( NULL );
		updateQuery->DatabaseName = getDatabase()->DatabaseName;
		updateQuery->SQL->Add( "update ITEM_TREE set VOLUME_ID=:newVolume where PARENTID = :parentID" );

		theTable->Close();
		theTable->Filter = "VOLUME_ID=0";
		theTable->Filtered = true;
		theTable->Open();

		while( !theTable->Eof )
		{
			parentID = theTable->FieldByName( "PARENTID" )->AsInteger;
			if( !badParents.hasElement( parentID ) )
			{
				theQuery->Params->Items[0]->AsInteger = parentID;
				theQuery->Open();
				if( !theQuery->Eof )
					volumeID = theQuery->Fields->Fields[0]->AsInteger;
				else
					volumeID = 0;
				theQuery->Close();

				if( volumeID )
				{
					updateQuery->Params->Items[0]->AsInteger = volumeID;
					updateQuery->Params->Items[1]->AsInteger = parentID;

					updateQuery->ExecSQL();
					theTable->Close();
					badParents.clear();
					theTable->Open();
				}
				else
				{
					theTable->Next();
					badParents.addElement( parentID );
				}
			}
			else
				theTable->Next();
		}
	}

	DatabaseSchema::closeTable( theTable, tableName );
}
//---------------------------------------------------------------------------
__fastcall TDocManDbConvertForm::TDocManDbConvertForm(TComponent* Owner)
	: TDbConvertForm(Owner)
{
}
//---------------------------------------------------------------------------
const char *TDocManDbConvertForm::getAliasName( void ) const
{
	return "DOCMAN";
}
//---------------------------------------------------------------------------
DatabaseSchema *TDocManDbConvertForm::createSchema( void ) const
{
	return new DocmanDatabaseSchema;
}
//---------------------------------------------------------------------------