System documentation of the GNU Image-Finding Tool

CQuery Class Reference

The Query manager for Queries on inverted Files. More...

#include <CQuery.h>

Inheritance diagram for CQuery:

List of all members.

Public Member Functions
	CQuery ()
	default constructor
virtual	~CQuery ()
	destructor
	CQuery (CAccessorAdminCollection &inAccessorAdminCollection, CAlgorithm &inAlgorithm)
	this constructor takes all the information ANY CQuery needs to configure itself.
void	addChild (CQuery *inChild, double inWeight=1)
	adding a child to this.
virtual CXMLElement *	query (const CXMLElement &inQuery)
	do a query
virtual CIDRelevanceLevelPairList *	fastQuery (const CXMLElement &inQuery, int inNumberOfInterestingImages, double inDifferenceToBest)=0
	a query which returns ID/RelevanceLevel pairs instead of instead of URL/RelevanceLevel pairs
virtual CXMLElement *	getRandomImages (int inNumberOfInterestingImages) const
	get some random images (handed through to accessor)
virtual CIDRelevanceLevelPairList *	getRandomIDs (int inNumberOfInterestingImages) const
	get some random images (handed through to accessor)
virtual list< TID > *	getAllIDs () const
	get the IDs of all images (handed through to accessor)
virtual list< CAccessorElement > *	getAllAccessorElements () const
	get the IDs of all images (handed through to accessor)
virtual bool	setAlgorithm (CAlgorithm &inAlgorithm)
	set the Algorithm.
const CAlgorithm &	getAlgorithm () const
	get the Algorithm.
virtual void	finishInit ()
	it might be necessary to wait until all the children are added before ending the initialisation phase.
Protected Types
typedef list< lCChild >	lCChildren
	type for children of this
Protected Member Functions
virtual void	init ()=0
	Initializer, used by both construcors.
Protected Attributes
CAccessor *	mAccessor
	needed to translate URLs to IDs this is a pointer, only because we cannot change references it does not imply any destruction responsability
CAccessorAdmin *	mAccessorAdmin
	This is where the the Accessor comes from.
CAccessorAdminCollection *	mAccessorAdminCollection
	Where to get CAccessorAdmins from.
CAlgorithm *	mAlgorithm
	the structure containing everything we know about the algorithm used do not destroy this
lCChildren	mChildren
	The children of this.

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Detailed Description

The Query manager for Queries on inverted Files.

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Constructor & Destructor Documentation

CQuery::CQuery (  CAccessorAdminCollection &  inAccessorAdminCollection, CAlgorithm &  inAlgorithm )

this constructor takes all the information ANY CQuery needs to configure itself. inAccessorAdminCollection The CQuery needs to know where to get the right accessor from. inAlgorithm This structure contains all the information about the algorithm, including which accessor to get.

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Member Function Documentation

void CQuery::addChild (  CQuery *  inChild, double  inWeight = 1 )

adding a child to this. We expect children to be nonzero and initialised when they are entered. this assumes no destruction responsabilities for the entered data.

virtual void CQuery::finishInit (   )  [virtual]

it might be necessary to wait until all the children are added before ending the initialisation phase. This function is called by CAlgorithm. Reimplemented in CQParallel, and CQInvertedFile.

const CAlgorithm& CQuery::getAlgorithm (   )  const

get the Algorithm. same scheme as in setCollection

virtual bool CQuery::setAlgorithm (  CAlgorithm &  inAlgorithm  )  [virtual]

set the Algorithm. set a new algorithm. Build a new query if necessary. Reimplemented in CQMultiple, CQParallel, CQInvertedFile, and CQHierarchy.

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Member Data Documentation

CAccessorAdmin* CQuery::mAccessorAdmin [protected]

This is where the the Accessor comes from. Also the AccessorAdmin is not to be deleted by this.

CAccessorAdminCollection* CQuery::mAccessorAdminCollection [protected]

Where to get CAccessorAdmins from.

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

• CQuery.h

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