Changeset 104 for trunk/UContact.pas

Timestamp:

Feb 9, 2022, 5:07:14 PM (3 years ago)

Author:

chronos

Message:

• Modified: Updated speed of loading of big number of contacts.
• Added: Contact field indexes cache for faster reverse search of contact fields by its index.

File:

• trunk/UContact.pas (modified) (6 diffs)

trunk/UContact.pas

@@ -71 +71 @@
 
   TContactFields = class(TFPGObjectList<TContactField>)
+  private
+    Indexes: array[TContactFieldIndex] of TContactField;
+    IndexesUpdated: Boolean;
+  public
+    procedure UpdateIndexes;
     function AddNew(Name: string; Groups: array of string; NoGroups: array of string;
       Title: string; Index: TContactFieldIndex; DataType:
@@ -209 +214 @@
 resourcestring
   SVCardFile = 'vCard file';
+  SFieldIndexRedefined = 'Field index %d redefined';
   SExpectedVCardBegin = 'Expected vCard begin';
   SFieldIndexNotDefined = 'Field index not defined';
@@ -779 +785 @@
 { TContactFields }
 
+procedure TContactFields.UpdateIndexes;
+var
+  I: Integer;
+  Index: TContactFieldIndex;
+begin
+  for Index := Low(TContactFieldIndex) to High(TContactFieldIndex) do
+    Indexes[Index] := nil;
+  for I := 0 to Count - 1 do
+    if not Assigned(Indexes[Items[I].Index]) then Indexes[Items[I].Index] := Items[I]
+      else raise Exception.Create(Format(SFieldIndexRedefined, [Integer(Items[I].Index)]));
+  IndexesUpdated := True;
+end;
+
 function TContactFields.AddNew(Name: string; Groups: array of string;
   NoGroups: array of string; Title: string; Index: TContactFieldIndex;
@@ -798 +817 @@
   Result.DataType := DataType;
   Add(Result);
+  IndexesUpdated := False;
 end;
 
@@ -825 +845 @@
   I: Integer;
 begin
-  I := 0;
-  while (I < Count) and (Items[I].Index <> Index) do Inc(I);
-  if I < Count then Result := Items[I]
-    else Result := nil;
+  if IndexesUpdated then Result := Indexes[Index]
+  else begin
+    I := 0;
+    while (I < Count) and (Items[I].Index <> Index) do Inc(I);
+    if I < Count then Result := Items[I]
+      else Result := nil;
+  end;
 end;
 
@@ -958 +981 @@
     with AddNew('X-MYSPACE', [], [], SMySpace, cfMySpace, dtString) do
       AddAlternative('X-SOCIALPROFILE', ['MYSPACE'], []);
+    UpdateIndexes;
     end;
   end;