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QueryNode Class Reference

#include <StructQueryRep.hpp>

Inheritance diagram for QueryNode:

List of all members.

Public Methods
	QueryNode (int id, double weight)
	New QueryNode with given id and weight.
	QueryNode ()
	New QueryNode with default id (0) and weight (1).
	QueryNode (double weight)
	New QueryNode with given weight and default id (0).
	~QueryNode ()
	clean up internal data.
virtual QnList *	children ()
	the children of this node
virtual int	id ()
	the nodes id
virtual double	eval (DocumentRep *dRep)=0
	evaluate the node on the given document, returning a score.
virtual double	weight ()
	the weight of this node.
virtual void	setWeight (double wt)
virtual double	proximityScore (DocumentRep *dR, double defaultScore)
Public Attributes
int	dCnt
	number of documents this node matched
bool *	dList
	array of bool matched docs indexed by docid
QnList *	ch
	This node's children list.
ProxInfo *	proxList
	This node's ProxInfo list.
int	entries
	Number of children in ch.
int	nextDoc
	the next document this node matched.
Protected Attributes
int	it
	query node id
double	w
	query node weight

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Detailed Description

Base class for all structured query operators. A query node is assumed to have a list of children, an id, a weight (default 1) and an eval function which will be defined by its subclasses

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Constructor & Destructor Documentation

QueryNode::QueryNode (  int    id, double    weight )  [inline]

New QueryNode with given id and weight.

QueryNode::QueryNode (    )  [inline]

New QueryNode with default id (0) and weight (1).

QueryNode::QueryNode (  double    weight )  [inline]

New QueryNode with given weight and default id (0).

QueryNode::~QueryNode (    )  [inline]

clean up internal data.

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Member Function Documentation

virtual QnList* QueryNode::children (    )  [inline, virtual]

the children of this node

virtual double QueryNode::eval (  DocumentRep *    dRep )  [pure virtual]

evaluate the node on the given document, returning a score. Implemented in SumQnode, WsumQnode, AndQnode, OrQnode, NotQnode, MaxQnode, BandQnode, BandNotQnode, FiltRejQnode, FiltReqQnode, TermQnode, OdnQNode, UwnQNode, PassageQNode, and SynQNode.

virtual int QueryNode::id (    )  [inline, virtual]

the nodes id

virtual double QueryNode::proximityScore (  DocumentRep *    dR, double    defaultScore )  [inline, virtual]

evaluate proximity operator against a document or passage. Prunes proxList to remove any entries that are no longer relevant to scoring this operator.

virtual void QueryNode::setWeight (  double    wt )  [inline, virtual]

virtual double QueryNode::weight (    )  [inline, virtual]

the weight of this node.

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Member Data Documentation

QnList* QueryNode::ch

This node's children list.

int QueryNode::dCnt

number of documents this node matched

bool* QueryNode::dList

array of bool matched docs indexed by docid

int QueryNode::entries

Number of children in ch.

int QueryNode::it [protected]

query node id

int QueryNode::nextDoc

the next document this node matched.

ProxInfo* QueryNode::proxList

This node's ProxInfo list.

double QueryNode::w [protected]

query node weight

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

• StructQueryRep.hpp

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