src/storage/Condition.cxx

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by www.databasecache.com                           *
   3  *   Contact: praba_tuty@databasecache.com                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15   ***************************************************************************/
  16 #include<os.h>
  17 #include<Predicate.h>
  18 #include<PredicateImpl.h>
  19 Condition::Condition()
  20 {
  21     pred = NULL;
  22 }
  23 void Condition::reset()
  24 {
  25     //if (pred) {delete pred;}
  26     pred =  NULL;
  27 }
  28 Condition::~Condition()
  29 {
  30     reset();
  31 }
  32 void Condition::setTerm(const char* fName1, ComparisionOp op,
  33                         const char *fName2)
  34 {
  35     if (pred) delete pred;
  36     pred = new PredicateImpl();
  37     pred->setTerm(fName1, op, fName2);
  38 }
  39
  40 //Operand should be of the same type of the field.This is must
  41 void Condition::setTerm(const char* fName1, ComparisionOp op, void *opnd)
  42 {
  43     if (pred) delete pred;
  44     pred = new PredicateImpl();
  45     pred->setTerm(fName1, op, opnd);
  46 }
  47
  48 void Condition::setTerm(const char* fName1, ComparisionOp op, void **opnd)
  49 {
  50     if (pred) delete pred;
  51     pred = new PredicateImpl();
  52     pred->setTerm(fName1, op, opnd);
  53 }
  54
  55 void Condition::setTerm(Predicate *p1, LogicalOp op, Predicate *p2 )
  56 {
  57     if (pred) delete pred;
  58     pred = new PredicateImpl();
  59     pred->setTerm(p1, op, p2);
  60 }