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// -*- Mode: C++ -*- |
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// GiSTdefs.h |
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// |
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// Copyright (c) 1996, Regents of the University of California |
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// $Header: /usr/local/devel/GiST/libGiST/libGiST/GiSTdefs.h,v 1.1.1.1 1996/08/06 23:47:21 jmh Exp $ |
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#ifndef GISTDEFS_H |
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#define GISTDEFS_H |
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#include <assert.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#ifdef PRINTING_OBJECTS |
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#include <iostream.h> |
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#endif |
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// A GiSTpage is a disk page number (a "pointer" to a disk page) |
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typedef unsigned long GiSTpage; |
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// GiSTobjid's are used to identify objects |
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// You can add new ones as you define new objects, or simply |
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// make things be GISTOBJECT_CLASS if you don't want to bother. |
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typedef enum { |
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GISTOBJECT_CLASS, |
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GIST_CLASS, |
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BT_CLASS, |
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RT_CLASS, |
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MT_CLASS, |
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GISTENTRY_CLASS, |
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GISTNODE_CLASS, |
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BTNODE_CLASS, |
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BTENTRY_CLASS, |
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BTKEY_CLASS, |
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RTNODE_CLASS, |
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RTENTRY_CLASS, |
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RTKEY_CLASS, |
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MTNODE_CLASS, |
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MTENTRY_CLASS, |
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MTKEY_CLASS, |
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GISTPREDICATE_CLASS, |
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BTPREDICATE_CLASS, |
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RTPREDICATE_CLASS, |
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MTPREDICATE_CLASS, |
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MTPREDICATE_AND_CLASS, |
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MTPREDICATE_OR_CLASS, |
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MTPREDICATE_NOT_CLASS, |
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GISTCURSOR_CLASS |
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} GiSTobjid; |
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// GiSTobject is the base class for all GiST classes |
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// It provides identity, equality tests and display of objects |
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class GiSTobject |
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{ |
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public: |
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virtual GiSTobjid IsA() const { return GISTOBJECT_CLASS; } |
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virtual GiSTobject *Copy() const { return NULL; } |
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virtual int IsEqual(const GiSTobject& obj) const { return 0; } |
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#ifdef PRINTING_OBJECTS |
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virtual void Print(ostream& os) const { os << "No print method\n"; } |
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#endif |
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virtual ~GiSTobject() {} |
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}; |
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#ifdef PRINTING_OBJECTS |
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inline ostream& operator<< (ostream& os, const GiSTobject& obj) { |
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obj.Print(os); |
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return os; |
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} |
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inline ostream& operator<< (ostream& os, const GiSTobject *obj) { |
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obj->Print(os); |
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return os; |
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} |
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#endif |
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#endif |
