dbRelationship Class Reference
[OOFILE Database package]

#include <oofrel.h>

Collaboration diagram for dbRelationship:

[legend]List of all members.

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Detailed Description

Object used to specify relationship between two dbTable instances.

Simple relationships just use dbRelationship as a functor. In cases like M:N relationships we need to create a named dbRelationship to call additional specification methods like linkMNvia();

Todo:

factor into mixin, but our OOF_mixRefCount has different semantics expecting at least one ref

Public Member Functions
	dbRelationship (dbRelRefBase &, dbRelRefBase &)
	dbRelationship (dbRelRefBase *, dbRelRefBase *)
	dbRelationship (dbRelRefBase &, dbRelRefBase &, dbField &, dbField &)
	dbRelationship (dbRelRefBase *, dbRelRefBase *, dbField *, dbField *)
void	linkMNvia (dbRelRefBase &, dbRelRefBase &)
	Finish specifying an M:N relationship by pointing out from middle table to both sides.
void	linkMNvia (dbRelRefBase *, dbRelRefBase *)

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Constructor & Destructor Documentation

dbRelationship::dbRelationship (  dbRelRefBase &  , dbRelRefBase &  )

dbRelationship::dbRelationship (  dbRelRefBase *  , dbRelRefBase *  )

dbRelationship::dbRelationship (  dbRelRefBase &  , dbRelRefBase &  , dbField &  , dbField &  )

dbRelationship::dbRelationship (  dbRelRefBase *  , dbRelRefBase *  , dbField *  , dbField *  )

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Member Function Documentation

void dbRelationship::linkMNvia (  dbRelRefBase *  , dbRelRefBase *  )

void dbRelationship::linkMNvia (  dbRelRefBase &  lhsLink, dbRelRefBase &  rhsLink )

Finish specifying an M:N relationship by pointing out from middle table to both sides. Assumes a pair of 1:N relationships have been created from the left and right tables to the middle table which maps the M:N. We can create an M:N link directly between the left and right tables usng a dbRelationship but need to not only specify the end-points but also the middle via linkMNvia().

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

• oofrel.h
• oofrel.cpp

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