core/sql/common/ColIndList.cpp

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// Licensed to the Apache Software Foundation (ASF) under one
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/* -*-C++-*-
******************************************************************************
*
* File:         ColIndList.cpp
* Description:  This file is the implementation of ColIndList, a list of longs
*		representing a list of column numbers.
* Created:      01/20/2002
* Language:     C++
*
*
*
*
******************************************************************************
*/

#include "ColIndList.h"

//*
//*-------	isPrefixOf
//*---------------------------------------------------
// Checks is this is a prefix of other, in any order.
NABoolean 
ColIndList::isPrefixOf(const ColIndList& other) const
{
  size_t mySize = entries();
  size_t otherSize = other.entries();
  
  if (mySize > otherSize) {
    return FALSE;
  }
  
  for (size_t i = 0; i < mySize; i++) {
    if (!contains(other[i] )) {
      return FALSE;
    }
  }
  
  return TRUE;
}

//*
//*-------	isOrderedPrefixOf
//*---------------------------------------------------
// Checks is this is a prefix of other, in the same order.
NABoolean
ColIndList::isOrderedPrefixOf(const ColIndList& other) const
{
  size_t mySize = entries();
  size_t otherSize = other.entries();
  
  if (mySize > otherSize) {
    return FALSE;
  }
  
  for (size_t i = 0; i < mySize; i++) {
    if (this->at(i) != other[i] ) {
      return FALSE;
    }
  }
  
  return TRUE;
}