Helper template that cares of two things: 1. More...
#include <qgsfeatureiterator.h>
Inheritance diagram for QgsAbstractFeatureIteratorFromSource< T >:
Public Member Functions | |
| QgsAbstractFeatureIteratorFromSource (T *source, bool ownSource, const QgsFeatureRequest &request) | |
| ~QgsAbstractFeatureIteratorFromSource () | |
 Public Member Functions inherited from QgsAbstractFeatureIterator | |
| QgsAbstractFeatureIterator (const QgsFeatureRequest &request) | |
| base class constructor - stores the iteration parameters More... | |
| virtual | ~QgsAbstractFeatureIterator () |
| destructor makes sure that the iterator is closed properly More... | |
| virtual bool | close ()=0 |
| end of iterating: free the resources / lock More... | |
| CompileStatus | compileStatus () const |
| Returns the status of expression compilation for filter expression requests. More... | |
| virtual bool | nextFeature (QgsFeature &f) |
| fetch next feature, return true on success More... | |
| virtual bool | rewind ()=0 |
| reset the iterator to the starting position More... | |
| virtual void | setInterruptionChecker (QgsInterruptionChecker *interruptionChecker) |
| Attach an object that can be queried regularly by the iterator to check if it must stopped. More... | |
Protected Member Functions | |
| void | iteratorClosed () |
| to be called by from subclass in close() More... | |
| Protected Member Functions inherited from QgsAbstractFeatureIterator | |
| void | deref () |
| remove reference, delete if refs == 0 More... | |
| virtual bool | fetchFeature (QgsFeature &f)=0 |
| If you write a feature iterator for your provider, this is the method you need to implement!! More... | |
| virtual bool | nextFeatureFilterExpression (QgsFeature &f) |
| By default, the iterator will fetch all features and check if the feature matches the expression. More... | |
| virtual bool | nextFeatureFilterFids (QgsFeature &f) |
| By default, the iterator will fetch all features and check if the id is in the request. More... | |
| virtual bool | prepareSimplification (const QgsSimplifyMethod &simplifyMethod) |
| Setup the simplification of geometries to fetch using the specified simplify method. More... | |
| void | ref () |
| add reference More... | |
Protected Attributes | |
| bool | mOwnSource |
| T * | mSource |
| Protected Attributes inherited from QgsAbstractFeatureIterator | |
| bool | mClosed |
| Set to true, as soon as the iterator is closed. More... | |
| CompileStatus | mCompileStatus |
| Status of compilation of filter expression. More... | |
| long | mFetchedCount |
| Number of features already fetched by iterator. More... | |
| QgsFeatureRequest | mRequest |
| A copy of the feature request. More... | |
| bool | mZombie |
| A feature iterator may be closed already but still be serving features from the cache. More... | |
| int | refs |
| reference counting (to allow seamless copying of QgsFeatureIterator instances) TODO QGIS3: make this private More... | |
Additional Inherited Members | |
| Public Types inherited from QgsAbstractFeatureIterator | |
| enum | CompileStatus { NoCompilation, PartiallyCompiled, Compiled } |
| Status of expression compilation for filter expression requests. More... | |
Detailed Description
template<typename T>
class QgsAbstractFeatureIteratorFromSource< T >
Helper template that cares of two things: 1.
automatic deletion of source if owned by iterator, 2. notification of open/closed iterator.
- Note
- not available in Python bindings
Definition at line 180 of file qgsfeatureiterator.h.
Constructor & Destructor Documentation
◆ QgsAbstractFeatureIteratorFromSource()
template<typename T>
|
inline |
Definition at line 183 of file qgsfeatureiterator.h.
◆ ~QgsAbstractFeatureIteratorFromSource()
template<typename T>
|
inline |
Definition at line 191 of file qgsfeatureiterator.h.
Member Function Documentation
◆ iteratorClosed()
template<typename T>
|
inlineprotected |
to be called by from subclass in close()
Definition at line 199 of file qgsfeatureiterator.h.
Member Data Documentation
◆ mOwnSource
template<typename T>
|
protected |
Definition at line 202 of file qgsfeatureiterator.h.
◆ mSource
template<typename T>
|
protected |
Definition at line 201 of file qgsfeatureiterator.h.
The documentation for this class was generated from the following file:
- /tmp/buildd/qgis-2.18.21+99unstable/src/core/qgsfeatureiterator.h
