Ваши три регулярных выражения, которые вам понадобятся для захвата упомянутых значений, будут такими,
Description="([^"]*)"
From="([^"]*)"
Thru="([^"]*)"
, которые вы можете динамически генерировать с помощью функции и повторно использовать ее для поиска значений для любого типа данных. Попробуйте эту демонстрацию кода Python,
import re
def getValue(str, key):
m = re.search(key + '="([^"]*)"',str)
if m:
return m.group(1)
s = '''<Report Type="Final Report" SiteName="Get Dataset" Name="Get Metadata" Description="Get Metadata" From="2019-01-16 00:00" Thru="2019-01-16 23:59" obj_device="479999" locations="69,31,">
<Objective Type="Availability">
<Goal>99.99</Goal>
<Actual>100.00</Actual>
<Compliant>Yes</Compliant>
<Errors>0</Errors>
<Checks>2880</Checks>
</Objective>
<Objective Type="Uptime">
<Goal/>
<Actual/>
<Compliant/>
<Errors>0</Errors>
<Checks>0</Checks>
</Objective>'''
print('Description: ' + getValue(s,'Description'))
print('From: ' + getValue(s,'From'))
print('Thru: ' + getValue(s,'Thru'))
Prints,
Description: Get Metadata
From: 2019-01-16 00:00
Thru: 2019-01-16 23:59
Вы могли использовать TBytesField или TBlobField
ClientDataSet1MySet: TBytesField, Size=32
var
MySet: set of Byte;
Bytes: array of Byte;
begin
MySet := [1, 2, 4, 8, 16];
// Write
Assert(ClientDataSet1MySet.DataSize >= SizeOf(MySet), 'Data field is too small');
SetLength(Bytes, ClientDataSet1MySet.DataSize);
Move(MySet, Bytes[0], SizeOf(MySet));
ClientDataSet1.Edit;
ClientDataSet1MySet.SetData(@Bytes[0]);
ClientDataSet1.Post;
// Read
SetLength(Bytes, ClientDataSet1MySet.DataSize);
if ClientDataSet1MySet.GetData(@Bytes[0]) then
Move(Bytes[0], MySet, SizeOf(MySet))
else
MySet := []; // NULL
end;
Можно преобразовать их в Байт, как это:
var
States : TUpdateStatusSet; // Can be any set, I took this one from DB.pas unit
SetAsAInteger: Integer;
dbs: Pointer; // Here's the trick
begin
States := [usModified, usInserted]; // Putting some content in that set
dbs := @States;
SetAsAInteger := PByte(dbs)^;
//Once you got it, SetAsAInteger is just another ordinary integer variable.
//Use it the way you like.
end;
Восстановиться отовсюду:
var
MSG: string;
Inserted, Modified: string;
States: TUpdateStatusSet;
MySet: Byte;
begin
while not ClientDataSet.Eof do
begin
//That's the part that interest us
//Convert that integer you stored in the database or whatever
//place to a Byte and, in the sequence, to your set type.
iSet := Byte(ClientDatasetMyIntegerField);// Sets are one byte, so they
// fit on a byte variable
States := TUpdateStatusSet(iSet);
//Conversion finished, below is just interface stuff
if usInserted in States then
Inserted := 'Yes';
if usModified in States then
Modified := 'Yes';
MSG := Format('Register Num: %d. Inserted: %s. Modified:%s',
[ClientDataSet.RecNo, Inserted, Alterted]);
ShowMessage( MSG );
ClientDataset.Next;
end;
end;