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
  24 void Condition::reset()
  25 {
  26     //if (pred) {delete pred;}
  27     pred =  NULL;
  28 }
  29
  30 Condition::~Condition()
  31 {
  32     reset();
  33 }
  34
  35 void Condition::setTerm(const char* fName1, ComparisionOp op,
  36                         const char *fName2)
  37 {
  38     if (pred) delete pred;
  39     pred = new PredicateImpl();
  40     pred->setTerm(fName1, op, fName2);
  41 }
  42
  43 //Operand should be of the same type of the field.This is must
  44 void Condition::setTerm(const char* fName1, ComparisionOp op, void *opnd)
  45 {
  46     if (pred) delete pred;
  47     pred = new PredicateImpl();
  48     pred->setTerm(fName1, op, opnd);
  49 }
  50
  51 void Condition::setTerm(const char* fName1, ComparisionOp op, void **opnd)
  52 {
  53     if (pred) delete pred;
  54     pred = new PredicateImpl();
  55     pred->setTerm(fName1, op, opnd);
  56 }
  57
  58 void Condition::setTerm(Predicate *p1, LogicalOp op, Predicate *p2 )
  59 {
  60     if (pred) delete pred;
  61     pred = new PredicateImpl();
  62     pred->setTerm(p1, op, p2);
  63 }