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#include <Pegasus/Common/InternalException.h>
#include "CQLPredicate.h"
#include "CQLSimplePredicate.h"
#include "CQLPredicateRep.h"
#include <Pegasus/CQL/CQLFactory.h>
#include <Pegasus/Query/QueryCommon/QueryContext.h>
#include <Pegasus/Common/Tracer.h>

PEGASUS_NAMESPACE_BEGIN

CQLPredicateRep::CQLPredicateRep():
    _invert(false)
{

}

CQLPredicateRep::CQLPredicateRep(const CQLSimplePredicate& inSimplePredicate,
    Boolean inVerted) :
    _simplePredicate(inSimplePredicate), _invert(inVerted)
{

}

CQLPredicateRep::CQLPredicateRep(const CQLPredicate& inPredicate,
    Boolean inInverted) :
    _invert(inInverted)
{
    _predicates.append(inPredicate);
}

CQLPredicateRep::CQLPredicateRep(const CQLPredicateRep* rep):
    _invert(false)
{
    _predicates = rep->_predicates;
    _simplePredicate = rep->_simplePredicate;
    _operators = rep->_operators;
    _invert = rep->_invert;
}

Boolean CQLPredicateRep::evaluate(CIMInstance CI, QueryContext& QueryCtx)
{
    PEG_METHOD_ENTER(TRC_CQL, "CQLIPredicateRep::evaluate");
    Boolean result = false;

    if (isSimple())
    {
    result = _simplePredicate.evaluate(CI, QueryCtx);
    }
    else
    {
        result = _predicates[0].evaluate(CI, QueryCtx);
        for (Uint32 i = 0; i < _operators.size(); i++)
        {
            if (_operators[i] == AND)
            {
                if(result)
                {
                    result = _predicates[i+1].evaluate(CI, QueryCtx);
                }
            }
            else
            {
                if(result)
                {
                    break;
                }
                else
                {
                    result = _predicates[i+1].evaluate(CI, QueryCtx);
                }
            }
        }
    }
    PEG_METHOD_EXIT();
    return (getInverted()) ? !result : result;
}

Boolean CQLPredicateRep::getInverted()const{
    return _invert;
}

void CQLPredicateRep::setInverted(Boolean invert){
    _invert = invert;
}

void CQLPredicateRep::appendPredicate(const CQLPredicate& inPredicate){
    _predicates.append(inPredicate);
}

void CQLPredicateRep::appendPredicate(const CQLPredicate& inPredicate,
    BooleanOpType inBooleanOperator)
{
    _predicates.append(inPredicate);
    _operators.append(inBooleanOperator);
}

Array<CQLPredicate> CQLPredicateRep::getPredicates()const{
    return _predicates;
}

CQLSimplePredicate CQLPredicateRep::getSimplePredicate()const{
    return _simplePredicate;
}

Array<BooleanOpType> CQLPredicateRep::getOperators()const{
    return _operators;
}

void CQLPredicateRep::applyContext(const QueryContext& queryContext)
{
    PEG_METHOD_ENTER(TRC_CQL, "CQLPredicateRep::applyContext");
    if (isSimple())
    {
        _simplePredicate.applyContext(queryContext);
    }
    else
    {
        for (Uint32 i = 0; i <_predicates.size(); i++)
        {
            _predicates[i].applyContext(queryContext);
        }
    }
    PEG_METHOD_EXIT();
}

Boolean CQLPredicateRep::isSimple()const{
    return (_predicates.size() == 0);
}

Boolean CQLPredicateRep::isSimpleValue()const{
    return (isSimple() && _simplePredicate.isSimpleValue());
}

String CQLPredicateRep::toString()const{
    if(isSimple())
    {
        String s;
      if(_invert) s = "NOT ";
      s.append(_simplePredicate.toString());
      return s;
    }
    String s;
    if(_invert) s = "NOT ";
    for(Uint32 i = 0; i < _predicates.size(); i++)
    {
        s.append(_predicates[i].toString());
        if(i < _operators.size())
        {
            switch(_operators[i])
            {
                case AND: s.append(" AND ");
                    break;
                case OR: s.append(" OR ");
                    break;
            }
        }
    }
    return s;
}

PEGASUS_NAMESPACE_END