Forms an QAbstractXmlForwardIterator over a sequence of integers, which each is the position of where a search parameter appeared in another QAbstractXmlForwardIterator. More...

#include <qindexofiterator_p.h>

Inheritance diagram for QPatternist::IndexOfIterator:

Public Functions
virtual const SourceLocationReflection *	actualReflection () const

virtual Item::Iterator::Ptr	copy () const
	Copies this QAbstractXmlForwardIterator and returns the copy. More...

virtual Item	current () const
	Returns the current item in the sequence. More...

	IndexOfIterator (const Item::Iterator::Ptr &inputSequence, const Item &searchParam, const AtomicComparator::Ptr &comp, const DynamicContext::Ptr &context, const Expression::ConstPtr &expr)

virtual Item	next ()
	Returns the next item in the sequence, or a null object if the end has been reached. More...

AtomicComparator::Operator	operatorID () const

virtual xsInteger	position () const
	Returns the current position in the sequence represented by this. More...

Public Functions inherited from QAbstractXmlForwardIterator< T >
virtual qint64	count ()
	Determines the number of items this QAbstractXmlForwardIterator represents. More...

virtual bool	isEmpty ()
	Returns true if the sequence is empty. More...

virtual T	last ()
	Returns the item at the end of this QAbstractXmlForwardIterator. More...

	QAbstractXmlForwardIterator ()
	Default constructor. More...

virtual qint64	sizeHint () const
	Gives a hint to the size of the contained sequence. More...

virtual QList< T >	toList ()
	Performs a copy of this QAbstractXmlForwardIterator(with copy()), and returns its items in a QList. More...

virtual QAbstractXmlForwardIterator< T >::Ptr	toReversed ()
	Returns a reverse iterator for the sequence. More...

virtual	~QAbstractXmlForwardIterator ()
	Destructor. More...

Public Functions inherited from QSharedData
	QSharedData ()
	Constructs a QSharedData object with a reference count of 0. More...

	QSharedData (const QSharedData &)
	Constructs a QSharedData object with reference count 0. More...

Public Functions inherited from QPatternist::SourceLocationReflection
virtual QString	description () const

virtual QSourceLocation	sourceLocation () const

	SourceLocationReflection ()

virtual	~SourceLocationReflection ()

Properties
const DynamicContext::Ptr	m_context

Item	m_current

const Expression::ConstPtr	m_expr

xsInteger	m_position

const Item	m_searchParam

const Item::Iterator::Ptr	m_seq

xsInteger	m_seqPos

Additional Inherited Members
Public Types inherited from QAbstractXmlForwardIterator< T >
typedef QList< QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< T > > >	List
	A QList containing QAbstractXmlForwardIterator::Ptr instances. More...

typedef QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< T > >	Ptr
	A smart pointer wrapping an instance of a QAbstractXmlForwardIterator subclass. More...

typedef QVector< QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< T > > >	Vector
	A QVector containing QAbstractXmlForwardIterator::Ptr instances. More...

Public Variables inherited from QSharedData
QAtomicInt	ref

Protected Functions inherited from QPatternist::ComparisonPlatform< IndexOfIterator, false >
const AtomicComparator::Ptr &	comparator () const

bool	compare (const Item &i1, const Item &i2, const AtomicComparator::Ptr &comp, const AtomicComparator::Operator op) const
	Compares `i1` and `i2` with operator `op`, using comparator `comp`. All input arguments must be valid, and not `null`. More...

	ComparisonPlatform ()

AtomicComparator::ComparisonResult	detailedFlexibleCompare (const Item &it1, const Item &it2, const DynamicContext::Ptr &context) const
	like flexibleCompare(), but returns the result as an AtomicComparator::Operator instead of `bool`. More...

AtomicComparator::Ptr	fetchComparator (const ItemType::Ptr &type1, const ItemType::Ptr &type2, const ReportContext::Ptr &context) const

bool	flexibleCompare (const Item &it1, const Item &it2, const DynamicContext::Ptr &context) const
	Compares `it1` against `it2`, using comparator() and operatorID(). More...

void	prepareComparison (const AtomicComparator::Ptr &comparator)

void	useCaseInsensitiveComparator ()

Related Functions inherited from QAbstractXmlForwardIterator< T >
template<typename TResult , typename TSource , typename TMapper >
static QAbstractXmlForwardIterator< TResult >::Ptr	makeSequenceMappingIterator (const TMapper &mapper, const QExplicitlySharedDataPointer< QAbstractXmlForwardIterator< TSource > > &source, const DynamicContext::Ptr &context)
	An object generator for SequenceMappingIterator. More...

bool	qIsForwardIteratorEnd (const T &unit)
	The Callback QAbstractXmlForwardIterator uses for determining whether unit is the end of a sequence. More...

Detailed Description

Forms an QAbstractXmlForwardIterator over a sequence of integers, which each is the position of where a search parameter appeared in another QAbstractXmlForwardIterator.

See also: XQuery 1.0 and XPath 2.0 Functions and Operators, 15.1.3 fn:index-of

Author: Frans Englich frans.nosp@m..eng.nosp@m.lich@.nosp@m.noki.nosp@m.a.com

Definition at line 76 of file qindexofiterator_p.h.

Constructors and Destructors

◆ IndexOfIterator()

IndexOfIterator::IndexOfIterator	(	const Item::Iterator::Ptr &	inputSequence,
		const Item &	searchParam,
		const AtomicComparator::Ptr &	comp,
		const DynamicContext::Ptr &	context,
		const Expression::ConstPtr &	expr
	)

Creates an IndexOfIterator, whose next() function returns integers being the index positions of where searchParam was found in inputSequence.

Parameters

comp	the AtomicComparator to be used for comparing values. This may be `null`, meaning the IndexOfIterator iterator will dynamically determine what comparator to use on an item per item basis, which is slower.
searchParam	the item which should be compared to the items in `inputSequence`.
inputSequence	the input sequence which indexes of the `searchParam` should be returned for.
context	the usual DynamicContext
expr	the Expression that this IndexOfIterator is evaluating for. It is used for error reporting, via actualReflection().

Definition at line 50 of file qindexofiterator.cpp.

Referenced by copy().

                                 : m_seq(seq)
                                 , m_searchParam(searchParam)
                                 , m_context(context)
                                 , m_expr(expr)
                                 , m_position(0)
                                 , m_seqPos(0)
 {
     Q_ASSERT(seq);
     Q_ASSERT(searchParam);
     prepareComparison(comp);
 }

Functions

◆ actualReflection()

const SourceLocationReflection * IndexOfIterator::actualReflection ( ) const

virtual

Implements QPatternist::SourceLocationReflection.

Definition at line 110 of file qindexofiterator.cpp.

Referenced by operatorID().

 {
     return m_expr.data();
 }

◆ copy()

Item::Iterator::Ptr IndexOfIterator::copy ( ) const

virtual

Copies this QAbstractXmlForwardIterator and returns the copy.

Warning: This function is not part of the public interface.

A copy and the original instance are completely independent of each other. Because evaluating an QAbstractXmlForwardIterator modifies it, one should always use a copy when an QAbstractXmlForwardIterator needs to be used several times.

Reimplemented from QAbstractXmlForwardIterator< T >.

Definition at line 101 of file qindexofiterator.cpp.

 {
     return Item::Iterator::Ptr(new IndexOfIterator(m_seq->copy(),
                                                    m_searchParam,
                                                    comparator(),
                                                    m_context,
                                                    m_expr));
 }

◆ current()

Item IndexOfIterator::current ( ) const

virtual

Returns the current item in the sequence.

If this function is called before the first call to next(), a null object is returned. If the end of the sequence has been reached, a null object is returned.

Implements QAbstractXmlForwardIterator< T >.

Definition at line 91 of file qindexofiterator.cpp.

 {
     return m_current;
 }

◆ next()

Item IndexOfIterator::next ( )

virtual

Returns the next item in the sequence, or a null object if the end has been reached.

Implements QAbstractXmlForwardIterator< T >.

Definition at line 67 of file qindexofiterator.cpp.

 {
     if(m_position == -1)
         return Item();
 
     const Item item(m_seq->next());
     ++m_seqPos;
 
     if(!item)
     {
         m_current.reset();
         m_position = -1;
         return Item();
     }
 
     if(flexibleCompare(item, m_searchParam, m_context))
     {
         ++m_position;
         return Integer::fromValue(m_seqPos);
     }
 
     return next();
 }

◆ operatorID()

AtomicComparator::Operator QPatternist::IndexOfIterator::operatorID ( ) const

inline

Definition at line 107 of file qindexofiterator_p.h.

         {
             return AtomicComparator::OperatorEqual;
         }

◆ position()

xsInteger IndexOfIterator::position ( ) const

virtual

Returns the current position in the sequence represented by this.

The first position is 1, not 0. If next() hasn't been called, 0 is returned. If this has reached the end, -1 is returned.

Implements QAbstractXmlForwardIterator< T >.

Definition at line 96 of file qindexofiterator.cpp.

 {
     return m_position;
 }

Properties

◆ m_context

const DynamicContext::Ptr QPatternist::IndexOfIterator::m_context

private

Definition at line 117 of file qindexofiterator_p.h.

Referenced by copy(), and next().

◆ m_current

Item QPatternist::IndexOfIterator::m_current

private

Definition at line 119 of file qindexofiterator_p.h.

Referenced by current(), and next().

◆ m_expr

const Expression::ConstPtr QPatternist::IndexOfIterator::m_expr

private

Definition at line 118 of file qindexofiterator_p.h.

Referenced by actualReflection(), and copy().

◆ m_position

xsInteger QPatternist::IndexOfIterator::m_position

private

Definition at line 120 of file qindexofiterator_p.h.

Referenced by next(), and position().

◆ m_searchParam

const Item QPatternist::IndexOfIterator::m_searchParam

private

Definition at line 116 of file qindexofiterator_p.h.

Referenced by copy(), and next().

◆ m_seq

const Item::Iterator::Ptr QPatternist::IndexOfIterator::m_seq

private

Definition at line 115 of file qindexofiterator_p.h.

Referenced by copy(), and next().

◆ m_seqPos

xsInteger QPatternist::IndexOfIterator::m_seqPos

private

Definition at line 121 of file qindexofiterator_p.h.

Referenced by next().

The documentation for this class was generated from the following files:

/src/xmlpatterns/iterators/qindexofiterator_p.h
/src/xmlpatterns/iterators/qindexofiterator.cpp

Public Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ IndexOfIterator()

Functions

◆ actualReflection()

◆ copy()

◆ current()

◆ next()

◆ operatorID()

◆ position()

Properties

◆ m_context

◆ m_current

◆ m_expr

◆ m_position

◆ m_searchParam

◆ m_seq

◆ m_seqPos