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PEP#: 193
TITLE: CQL Stage 1

DESCRIPTION: copyrights

//%2003////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002  BMC Software, Hewlett-Packard Development
// Company, L. P., IBM Corp., The Open Group, Tivoli Systems.
// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L. P.;
// IBM Corp.; EMC Corporation, The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Authors: David Rosckes (rosckes@us.ibm.com)
//          Bert Rivero (hurivero@us.ibm.com)
//          Chuck Carmack (carmack@us.ibm.com)
//          Brian Lucier (lucier@us.ibm.com)
//
// Modified By: 
//
//%/////////////////////////////////////////////////////////////////////////////

#include "QueryContext.h"
#include <Pegasus/Common/System.h>

PEGASUS_NAMESPACE_BEGIN
                
QueryContext::QueryContext(CIMNamespaceName& inNS)
  :_NS(inNS)
{
}

QueryContext::QueryContext(const QueryContext& ctx)
  :_NS(ctx._NS),
   _AliasClassTable(ctx._AliasClassTable),
   _fromList(ctx._fromList)
{
}

QueryContext::~QueryContext()
{
}

QueryContext& QueryContext::operator=(const QueryContext& rhs)
{
  if (this == &rhs)
    return *this;

  _NS = rhs._NS;
  _fromList = rhs._fromList;
  _AliasClassTable = rhs._AliasClassTable;

  return *this;
}

String QueryContext::getHost(Boolean fullyQualified)
{
	if(fullyQualified) return System::getFullyQualifiedHostName();
	return System::getHostName();
}

CIMNamespaceName QueryContext::getNamespace() const
{
	return _NS;
}

void QueryContext::insertClassPath(const CQLIdentifier& inIdentifier, String inAlias)
{
	if(inAlias != String::EMPTY)
	{
		_AliasClassTable.insert(inAlias, inIdentifier);
	}
	_fromList.append(inIdentifier);
}

CQLIdentifier QueryContext::findClass(const String& inAlias)
{
	// look for alias match
	CQLIdentifier _class;
	if(_AliasClassTable.lookup(inAlias, _class)) return _class;

	// look if inAlias is really a class name
	_class = CQLIdentifier(inAlias);
	Array<CQLIdentifier> _identifiers = getFromList();
	for(Uint32 i = 0; i < _identifiers.size(); i++){
		if(_class == _identifiers[i].getName()) return _identifiers[i];
	}	

	// could not find inAlias
	return CQLIdentifier("");
}

Array<CQLIdentifier> QueryContext::getFromList() const 
{
	return _fromList;
}

void QueryContext::clear(){
	_fromList.clear();
}

PEGASUS_NAMESPACE_END