//
// $Id: VariableComponent.cpp,v 1.8 2006/10/27 18:35:50 bakerj Exp $
//
//****************************************************************************************//
// Copyright (c) 2006, The MITRE Corporation
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice, this list
//       of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice, this 
//       list of conditions and the following disclaimer in the documentation and/or other
//       materials provided with the distribution.
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//       used to endorse or promote products derived from this software without specific 
//       prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
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//****************************************************************************************//

#include "VariableComponent.h"

//****************************************************************************************//
//								VariableComponent Class									  //	
//****************************************************************************************//
VariableComponent::VariableComponent(AbsVariable* varRef) {
	// -----------------------------------------------------------------------
	//	Abstract
	//
	//	Create a compelete VariableComponent object
	//
	// -----------------------------------------------------------------------

	this->SetVarRef(varRef);
}

VariableComponent::~VariableComponent() {
	// -----------------------------------------------------------------------
	//	Abstract
	//
	//	Do nothing for now
	//
	// -----------------------------------------------------------------------
}

// ***************************************************************************************	//
//								 Public members												//
// ***************************************************************************************	//
AbsVariable* VariableComponent::GetVarRef() {
	// -----------------------------------------------------------------------
	//	Abstract
	//
	//	Return the varRef field's value
	//
	// -----------------------------------------------------------------------

	return this->varRef;
}

void VariableComponent::SetVarRef(AbsVariable* varRef) {
	// -----------------------------------------------------------------------
	//	Abstract
	//
	//	Set the varRef field's value
	//
	// -----------------------------------------------------------------------

	this->varRef = varRef;
}

ComponentValue* VariableComponent::ComputeValue() {
	// -----------------------------------------------------------------------
	//	Abstract
	//
	// Compute the value for this component. 
	// -----------------------------------------------------------------------

	VariableValueVector* varValues = this->GetVarRef()->GetValues();
	StringVector* values = new StringVector();

	VariableValueVector::iterator iterator;
	for(iterator = varValues->begin(); iterator != varValues->end(); iterator++) {
		values->push_back((*iterator)->GetValue());
	}

	// create the ComponentValue to return. 
	// Always passing the flag associated with this var ref and the values
	ComponentValue* result = new ComponentValue(this->GetVarRef()->GetFlag(), values, this->GetVarRef()->GetMessages());

	return result;
}

void VariableComponent::Parse(DOMElement* componentElm) {
	// -----------------------------------------------------------------------
	//	Abstract
	//
	//	parse the VariableComponent element
	// -----------------------------------------------------------------------

	string varId = XmlCommon::GetAttributeByName(componentElm, "var_ref");
	AbsVariable* var = VariableFactory::GetVariable(varId);
	this->SetVarRef(var);
}

VariableValueVector* VariableComponent::GetVariableValues() {
	// -----------------------------------------------------------------------
	//	Abstract
	//
	//	return the variable values used to compute this component's value
	// -----------------------------------------------------------------------
	
	VariableValueVector* values = new VariableValueVector();
	
	// loop through the variable values used by the var ref
    VariableValueVector* varRefDeps = this->GetVarRef()->GetVariableValues();
	VariableValueVector::iterator iterator;
	for(iterator = varRefDeps->begin(); iterator != varRefDeps->end(); iterator++) {
		VariableValue* varRefDep = (*iterator);
		values->push_back(varRefDep);
	}

	// Add the values associated with the var ref
	VariableValueVector* varRefValues = this->GetVarRef()->GetValues();
	VariableValueVector::iterator iterator2;
	for(iterator2 = varRefValues->begin(); iterator2 != varRefValues->end(); iterator2++) {
		VariableValue* varRefValue = (*iterator2);
		values->push_back(varRefValue);
	}

	return values;
}
