QGIS API Documentation 3.99.0-Master (26c88405ac0)
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qgsdefaultvalue.cpp
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1/***************************************************************************
2 qgsdefaultvalue.cpp
3
4 ---------------------
5 begin : 19.9.2017
6 copyright : (C) 2017 by Matthias Kuhn
8 ***************************************************************************
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 ***************************************************************************/
16#include "qgsdefaultvalue.h"
17
18#include "moc_qgsdefaultvalue.cpp"
19
21 : mExpression( expression )
22 , mApplyOnUpdate( applyOnUpdate )
23{
24
25}
26
28{
29 return mExpression == other.mExpression
30 && mApplyOnUpdate == other.mApplyOnUpdate;
31}
32
34{
35 return mExpression;
36}
37
39{
40 mExpression = expression;
41}
42
44{
45 return mApplyOnUpdate;
46}
47
49{
50 mApplyOnUpdate = applyOnUpdate;
51}
52
54{
55 return !mExpression.isEmpty();
56}
57
58QgsDefaultValue::operator bool() const
59{
60 return !mExpression.isEmpty();
61}
QgsDefaultValue(const QString &expression=QString(), bool applyOnUpdate=false)
Create a new default value with the given expression and applyOnUpdate flag.
void setApplyOnUpdate(bool applyOnUpdate)
The applyOnUpdate flag determines if this expression should also be applied when a feature is updated...
bool isValid() const
Returns if this default value should be applied.
bool operator==(const QgsDefaultValue &other) const
void setExpression(const QString &expression)
The expression will be evaluated whenever a default value needs to be calculated for a field.