26 #include <QDataStream>
41 d =
new QgsFeaturePrivate(
id );
46 d =
new QgsFeaturePrivate(
id );
67 if ( d->fid == other.d->fid
68 && d->valid == other.d->valid
69 && d->fields == other.d->fields
70 && d->attributes == other.d->attributes
71 && d->geometry.equals( other.d->geometry )
72 && d->symbol == other.d->symbol )
80 return !( *
this == other );
101 d->attributes.remove(
field );
127 return d->attributes;
133 const int fieldSize = d->fields.size();
134 const int attributeSize = d->attributes.size();
135 if ( fieldSize != attributeSize )
137 QgsDebugMsg( QStringLiteral(
"Attribute size (%1) does not match number of fields (%2)" ).arg( attributeSize ).arg( fieldSize ) );
138 return QVariantMap();
141 for (
int i = 0; i < attributeSize; ++i )
143 res[d->fields.at( i ).name()] = d->attributes.at( i );
150 return d->attributes.size();
155 if ( attrs == d->attributes )
159 d->attributes = attrs;
216 if ( d->valid == validity )
225 return !d->geometry.isNull();
231 d->attributes.resize( 0 );
234 d->attributes.resize( fieldCount );
239 if ( fieldCount == d->attributes.size() )
243 d->attributes.resize( fieldCount );
252 d->attributes.resize( d->attributes.size() + count );
257 if ( idx < 0 || idx >= d->attributes.size() )
259 QgsMessageLog::logMessage( QObject::tr(
"Attribute index %1 out of bounds [0;%2]" ).arg( idx ).arg( d->attributes.size() ), QString(), Qgis::MessageLevel::Warning );
264 d->attributes[idx] = value;
278 if ( fieldIdx == -1 )
282 d->attributes[fieldIdx] = value;
290 if ( fieldIdx == -1 )
294 d->attributes[fieldIdx].clear();
300 if ( fieldIdx < 0 || fieldIdx >= d->attributes.count() )
303 return d->attributes.at( fieldIdx );
308 return d->symbol.get();
313 if ( symbol == d->symbol.get() )
317 d->symbol.reset( symbol );
323 if ( fieldIdx == -1 )
326 return d->attributes.at( fieldIdx );
337 return d->fields.lookupField( fieldName );
340 static size_t qgsQStringApproximateMemoryUsage(
const QString &
str )
342 return sizeof( QString ) +
str.size() *
sizeof( QChar );
345 static size_t qgsQVariantApproximateMemoryUsage(
const QVariant &v )
349 size_t s =
sizeof( QVariant ) +
sizeof(
long long ) +
sizeof( int );
350 if ( v.type() == QVariant::String )
352 s += qgsQStringApproximateMemoryUsage( v.toString() );
354 else if ( v.type() == QVariant::StringList )
356 for (
const QString &
str : v.toStringList() )
357 s += qgsQStringApproximateMemoryUsage(
str );
359 else if ( v.type() == QVariant::List )
361 for (
const QVariant &subV : v.toList() )
362 s += qgsQVariantApproximateMemoryUsage( subV );
369 size_t s =
sizeof( *this ) +
sizeof( *d );
372 for (
const QVariant &attr : std::as_const( d->attributes ) )
374 s += qgsQVariantApproximateMemoryUsage( attr );
378 s +=
sizeof( QAtomicInt ) +
sizeof(
void * );
381 s += d->geometry.wkbSize();
384 s +=
sizeof( QgsFieldsPrivate );
386 s += d->fields.size() * (
sizeof(
QgsField ) +
sizeof( QgsFieldPrivate ) );
388 return static_cast<int>( s );
421 in >>
id >> attr >> geometry >> valid;
432 const auto constAttributes = key.
attributes();
433 for (
const QVariant &attr : constAttributes )
435 hash ^=
qHash( attr.toString() );
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
bool setAttribute(int field, const QVariant &attr)
Sets an attribute's value by field index.
void resizeAttributes(int fieldCount)
Resizes the attributes attached to this feature to the given number of fields.
bool operator!=(const QgsFeature &other) const
Compares two features.
int fieldNameIndex(const QString &fieldName) const
Utility method to get attribute index from name.
void initAttributes(int fieldCount)
Initialize this feature with the given number of fields.
void deleteAttribute(int field)
Clear's an attribute's value by its index.
QgsFeature & operator=(const QgsFeature &rhs)
Assignment operator.
int approximateMemoryUsage() const
Returns the approximate RAM usage of the feature, in bytes.
void setAttributes(const QgsAttributes &attrs)
Sets the feature's attributes.
bool operator==(const QgsFeature &other) const
Compares two features.
void setFields(const QgsFields &fields, bool initAttributes=false)
Assigns a field map with the feature to allow attribute access by attribute name.
QgsFeature(QgsFeatureId id=FID_NULL)
Constructor for QgsFeature.
int attributeCount() const
Returns the number of attributes attached to the feature.
void padAttributes(int count)
Resizes the attributes attached to this feature by appending the specified count of NULL values to th...
const QgsSymbol * embeddedSymbol() const
Returns the feature's embedded symbology, or nullptr if the feature has no embedded symbol.
void setId(QgsFeatureId id)
Sets the feature id for this feature.
void setEmbeddedSymbol(QgsSymbol *symbol)
Sets the feature's embedded symbol.
void clearGeometry()
Removes any geometry associated with the feature.
void setValid(bool validity)
Sets the validity of the feature.
bool hasGeometry() const
Returns true if the feature has an associated geometry.
bool isValid() const
Returns the validity of this feature.
QVariant attribute(const QString &name) const
Lookup attribute value by attribute name.
void setGeometry(const QgsGeometry &geometry)
Set the feature's geometry.
QVariantMap attributeMap() const
Returns the feature's attributes as a map of field name to value.
Encapsulate a field in an attribute table or data source.
Container of fields for a vector layer.
A geometry is the spatial representation of a feature.
QString asWkt(int precision=17) const
Exports the geometry to WKT.
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
Abstract base class for all rendered symbols.
uint qHash(const QgsFeature &key, uint seed)
QDataStream & operator<<(QDataStream &out, const QgsFeature &feature)
Writes the feature to stream out. QGIS version compatibility is not guaranteed.
QDataStream & operator>>(QDataStream &in, QgsFeature &feature)
Reads a feature from stream in into feature. QGIS version compatibility is not guaranteed.
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features