// DeleteQuery.cxx

#include "dataset_sql/DeleteQuery.h"
#include <vector> 
#include <sstream> 
#include <iostream> 
#include <iomanip> 

using std::string;  
using std::ostream;  
using dset::DeleteQuery;

//**********************************************************************
// Member functions.
//**********************************************************************

// Constructor.

DeleteQuery::DeleteQuery(string constraint){    	
    m_constraint = constraint; 
    m_validity = true;	
} 

//**********************************************************************

// Destructor.

DeleteQuery::~DeleteQuery() { }

//**********************************************************************

// Validity.

bool DeleteQuery::is_valid() const {
  return m_validity;
}

//**********************************************************************

// Reset the Sql query to the default selection catalog.

DeleteQuery& DeleteQuery::reset() {
  m_constraint = "";
  return *this;
} 


//**********************************************************************

// Set an SQL query

DeleteQuery& DeleteQuery::set(string constraint) {
  m_constraint = constraint;
  return *this;
}

//**********************************************************************

// Add 'AND' constraints to a query

DeleteQuery& DeleteQuery::andconstraint(string constraint) {
  if (m_constraint == "")
        m_constraint = constraint;
  else
        m_constraint = m_constraint + " and " + constraint;
  return *this;
}


//**********************************************************************

// Add 'OR' constraints to a query

DeleteQuery& DeleteQuery::orconstraint(string constraint) {
  if (m_constraint == "")
        m_constraint = constraint;
  else
        m_constraint = m_constraint + " or " + constraint;

  return *this;
}

//**********************************************************************

// Return the constraint on the curent query
  
string DeleteQuery::get_constraint() const{
  return m_constraint;
} 

//**********************************************************************
// Free functions.
//**********************************************************************

// Output stream.

std::ostream& operator<<(std::ostream& lhs, const DeleteQuery& rhs) {
  lhs << "SQL Query: " << rhs.get_constraint();
  return lhs;
}

//**********************************************************************