QPatternist::BySequenceTypeIdentifier Class Reference

Identifies Expression instances based on their static type. More...

#include <qoptimizerblocks_p.h>

Inheritance diagram for QPatternist::BySequenceTypeIdentifier:

Public Functions
	BySequenceTypeIdentifier (const SequenceType::Ptr &seqType)
virtual bool	matches (const Expression::Ptr &expr) const
Public Functions inherited from QPatternist::ExpressionIdentifier
	ExpressionIdentifier ()
virtual	~ExpressionIdentifier ()
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...

Properties
const SequenceType::Ptr	m_seqType

Additional Inherited Members
Public Types inherited from QPatternist::ExpressionIdentifier
typedef QList< ExpressionIdentifier::Ptr >	List
typedef QExplicitlySharedDataPointer< ExpressionIdentifier >	Ptr
Public Variables inherited from QSharedData
QAtomicInt	ref

Detailed Description

Identifies Expression instances based on their static type.

BySequenceTypeIdentifier identifies Expression instances if their Expression::staticType() matches the requested one, regardless of whether the Expression is a particular one, such as AndExpression.

For example, constructing a BySequenceTypeIdentifier while passing CommonSequenceTypes::EBV in its constructor will create a ExpressionIdentifier that returns true for a static type with item type xs:string, but returns false for a static type involving xs:date.

Author

Frans englich frans.nosp@m..eng.nosp@m.lich@.nosp@m.noki.nosp@m.a.com

Definition at line 97 of file qoptimizerblocks_p.h.

Constructors and Destructors

BySequenceTypeIdentifier()

BySequenceTypeIdentifier::BySequenceTypeIdentifier

(

const SequenceType::Ptr &

seqType

)

Definition at line 94 of file qoptimizerblocks.cpp.

                                                                                 : m_seqType(seqType)
{
    Q_ASSERT(seqType);
}

Functions

matches()

bool BySequenceTypeIdentifier::matches ( const Expression::Ptr &  expr ) const

virtual

Returns

true, if the static type of expr is matches the SequenceType passed in the BySequenceTypeIdentifier() constructor, otherwise false.

Implements QPatternist::ExpressionIdentifier.

Definition at line 99 of file qoptimizerblocks.cpp.

{
    const SequenceType::Ptr t(expr->staticType());

    return m_seqType->itemType()->xdtTypeMatches(t->itemType())
           &&
           m_seqType->cardinality().isMatch(t->cardinality());
}

Properties

m_seqType

const SequenceType::Ptr QPatternist::BySequenceTypeIdentifier::m_seqType

private

Definition at line 110 of file qoptimizerblocks_p.h.

Referenced by matches().

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

• /src/xmlpatterns/expr/qoptimizerblocks_p.h
• /src/xmlpatterns/expr/qoptimizerblocks.cpp