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TCSystemCS/MetaDataDB/DB2Data.cs at develop · tgoessler/TCSystemCS · GitHub
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DB2Data.cs
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// *******************************************************************************
//
// ******* *** *** *
// * * * *
// * * * *****
// * * *** * * ** * ** ***
// * * * * * * * **** * * *
// * * * * * * * * * * *
// * *** *** * ** ** ** * *
// *
// *******************************************************************************
// see https://github.com/tgoessler/TCSystemCS for details.
// Copyright (C) 2003 - 2026 Thomas Goessler. All Rights Reserved.
// *******************************************************************************
//
// TCSystem is the legal property of its developers.
// Please refer to the COPYRIGHT file distributed with this source distribution.
//
// *******************************************************************************
#region Usings
using
System
;
using
System
.
Collections
.
Generic
;
using
Microsoft
.
Data
.
Sqlite
;
using
TCSystem
.
MetaData
;
#endregion
namespace
TCSystem
.
MetaDataDB
;
internal
sealed
class
DB2Data
(
DB2Instance
_instance
)
:
DB2Constants
{
#region Public
public
Image
GetMetaData
(
long
fileId
,
Location
location
,
IReadOnlyList
<
PersonTag
>
personTags
,
IReadOnlyList
<
string
>
tags
,
SqliteTransaction
transaction
)
{
using
(
var
command
=
new
SqliteCommand
(
)
)
{
command
.
Transaction
=
transaction
;
command
.
Connection
=
_instance
.
Connection
;
command
.
CommandText
=
$
"SELECT
{
TableFiles
}
.
{
IdFileName
}
,
{
TableFiles
}
.
{
IdProcessingInfo
}
,
{
IdWidth
}
,
{
IdHeight
}
,
{
IdOrientation
}
,
{
IdDateTaken
}
"
+
$
"FROM
{
TableFileData
}
"
+
$
" INNER JOIN
{
TableFiles
}
ON
{
TableFiles
}
.
{
IdFileId
}
=
{
TableFileData
}
.
{
IdFileId
}
"
+
$
"WHERE
{
TableFileData
}
.
{
IdFileId
}
=@
{
IdFileId
}
;"
;
command
.
Parameters
.
AddWithValue
(
$
"@
{
IdFileId
}
"
,
fileId
)
;
using
(
SqliteDataReader
reader
=
command
.
ExecuteReader
(
)
)
{
Image
image
=
null
;
if
(
reader
.
HasRows
&&
reader
.
Read
(
)
)
{
image
=
new
(
fileId
,
reader
.
GetString
(
0
)
,
(
ProcessingInfos
)
reader
.
GetInt64
(
1
)
,
reader
.
GetInt32
(
2
)
,
reader
.
GetInt32
(
3
)
,
(
OrientationMode
)
reader
.
GetInt32
(
4
)
,
reader
.
GetDateTimeOffset
(
5
)
,
null
,
location
,
personTags
,
tags
)
;
}
return
image
;
}
}
}
public
void
SetMetaData
(
long
fileId
,
Image
newData
,
Image
oldData
,
SqliteTransaction
transaction
)
{
if
(
oldData
==
null
)
{
AddMetaData
(
fileId
,
newData
,
transaction
)
;
}
else
{
UpdateMetaData
(
fileId
,
newData
,
transaction
)
;
}
}
public
IList
<
DateTimeOffset
>
GetAllYears
(
)
{
using
(
var
command
=
new
SqliteCommand
(
)
)
{
command
.
Connection
=
_instance
.
Connection
;
command
.
CommandText
=
$
"SELECT DISTINCT
{
IdDateTaken
}
FROM
{
TableFileData
}
ORDER by
{
IdDateTaken
}
DESC;"
;
using
(
SqliteDataReader
reader
=
command
.
ExecuteReader
(
)
)
{
var
years
=
new
List
<
DateTimeOffset
>
(
)
;
while
(
reader
.
Read
(
)
)
{
DateTimeOffset
year
=
reader
.
GetDateTimeOffset
(
0
)
;
if
(
year
!=
Image
.
InvalidDateTaken
)
{
year
=
new
(
new
(
year
.
Year
,
1
,
1
,
0
,
0
,
0
,
DateTimeKind
.
Local
)
)
;
}
if
(
!
years
.
Contains
(
year
)
)
{
years
.
Add
(
year
)
;
}
}
return
years
;
}
}
}
public
IList
<
string
>
GetFilesOfYear
(
DateTimeOffset
year
)
{
using
(
var
command
=
new
SqliteCommand
(
)
)
{
command
.
Connection
=
_instance
.
Connection
;
SetupGetFilesOfYearCommand
(
command
,
year
,
false
)
;
using
(
SqliteDataReader
reader
=
command
.
ExecuteReader
(
)
)
{
var
fileNames
=
new
List
<
string
>
(
)
;
while
(
reader
.
Read
(
)
)
{
fileNames
.
Add
(
reader
.
GetString
(
0
)
)
;
}
return
fileNames
;
}
}
}
public
OrientationMode
GetOrientation
(
string
fileName
)
{
using
(
var
command
=
new
SqliteCommand
(
)
)
{
command
.
Connection
=
_instance
.
Connection
;
command
.
CommandText
=
$
"SELECT
{
IdOrientation
}
FROM
{
TableFileData
}
"
+
$
" INNER JOIN
{
TableFiles
}
ON
{
TableFiles
}
.
{
IdFileId
}
=
{
TableFileData
}
.
{
IdFileId
}
"
+
$
"WHERE
{
TableFiles
}
.
{
IdFileName
}
=@
{
IdFileName
}
;"
;
command
.
Parameters
.
AddWithValue
(
$
"
{
IdFileName
}
"
,
fileName
)
;
using
(
SqliteDataReader
reader
=
command
.
ExecuteReader
(
)
)
{
if
(
reader
.
HasRows
&&
reader
.
Read
(
)
)
{
return
(
OrientationMode
)
reader
.
GetInt32
(
0
)
;
}
return
OrientationMode
.
Undefined
;
}
}
}
public
long
GetNumFilesOfYear
(
DateTimeOffset
year
)
{
using
(
var
command
=
new
SqliteCommand
(
)
)
{
command
.
Connection
=
_instance
.
Connection
;
SetupGetFilesOfYearCommand
(
command
,
year
,
true
)
;
object
result
=
command
.
ExecuteScalar
(
)
;
return
(
long
?
)
result
??
0
;
}
}
#endregion
#region Private
private
void
AddMetaData
(
long
fileId
,
Image
newData
,
SqliteTransaction
transaction
)
{
using
(
var
command
=
new
SqliteCommand
(
)
)
{
command
.
Transaction
=
transaction
;
command
.
Connection
=
_instance
.
Connection
;
command
.
CommandText
=
$
"INSERT INTO
{
TableFileData
}
VALUES "
+
"("
+
$
"@
{
IdFileId
}
, "
+
$
"@
{
IdWidth
}
, "
+
$
"@
{
IdHeight
}
, "
+
$
"@
{
IdOrientation
}
, "
+
$
"@
{
IdDateTaken
}
"
+
");"
;
SetFileParameters
(
fileId
,
newData
,
command
)
;
command
.
ExecuteNonQuery
(
)
;
}
}
private
void
UpdateMetaData
(
long
fileId
,
Image
newData
,
SqliteTransaction
transaction
)
{
using
(
var
command
=
new
SqliteCommand
(
)
)
{
command
.
Transaction
=
transaction
;
command
.
Connection
=
_instance
.
Connection
;
command
.
CommandText
=
$
"UPDATE
{
TableFileData
}
"
+
$
"SET
{
IdWidth
}
=@
{
IdWidth
}
,"
+
$
"
{
IdHeight
}
=@
{
IdHeight
}
,"
+
$
"
{
IdOrientation
}
=@
{
IdOrientation
}
,"
+
$
"
{
IdDateTaken
}
=@
{
IdDateTaken
}
"
+
$
"WHERE
{
IdFileId
}
=@
{
IdFileId
}
"
;
SetFileParameters
(
fileId
,
newData
,
command
)
;
command
.
ExecuteNonQuery
(
)
;
}
}
private
static
void
SetFileParameters
(
long
fileId
,
Image
data
,
SqliteCommand
command
)
{
command
.
Parameters
.
AddWithValue
(
$
"@
{
IdFileId
}
"
,
fileId
)
;
command
.
Parameters
.
AddWithValue
(
$
"@
{
IdWidth
}
"
,
data
.
Width
)
;
command
.
Parameters
.
AddWithValue
(
$
"@
{
IdHeight
}
"
,
data
.
Height
)
;
command
.
Parameters
.
AddWithValue
(
$
"@
{
IdOrientation
}
"
,
(
int
)
data
.
Orientation
)
;
command
.
Parameters
.
AddWithValue
(
$
"@
{
IdDateTaken
}
"
,
data
.
DateTaken
.
ToString
(
"s"
)
)
;
}
private
static
void
SetupGetFilesOfYearCommand
(
SqliteCommand
command
,
DateTimeOffset
year
,
bool
countOnly
)
{
string
filter
=
year
==
Image
.
InvalidDateTaken
?
$
"WHERE
{
TableFileData
}
.
{
IdDateTaken
}
=@Date "
:
$
"WHERE
{
TableFileData
}
.
{
IdDateTaken
}
BETWEEN @StartDate AND @EndDate "
;
command
.
CommandText
=
countOnly
?
$
"SELECT DISTINCT COUNT(
{
IdFileName
}
) "
:
$
"SELECT DISTINCT
{
IdFileName
}
"
;
command
.
CommandText
+=
$
"FROM
{
TableFiles
}
"
+
$
" INNER JOIN
{
TableFileData
}
ON
{
TableFileData
}
.
{
IdFileId
}
=
{
TableFiles
}
.
{
IdFileId
}
"
+
filter
;
command
.
CommandText
+=
countOnly
?
";"
:
$
"ORDER by
{
TableFileData
}
.
{
IdDateTaken
}
DESC;"
;
if
(
year
==
Image
.
InvalidDateTaken
)
{
command
.
Parameters
.
AddWithValue
(
"@Date"
,
year
.
ToString
(
"s"
)
)
;
}
else
{
var
startDate
=
new
DateTimeOffset
(
new
(
year
.
Year
,
1
,
1
,
0
,
0
,
0
,
DateTimeKind
.
Local
)
)
;
var
endDate
=
new
DateTimeOffset
(
new
(
year
.
Year
,
12
,
31
,
23
,
59
,
59
,
DateTimeKind
.
Local
)
)
;
command
.
Parameters
.
AddWithValue
(
"@StartDate"
,
startDate
)
;
command
.
Parameters
.
AddWithValue
(
"@EndDate"
,
endDate
)
;
}
}
#endregion
}
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