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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: pathexpression.hxx,v $
* $Revision: 1.5 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _PATHEXPRESSION_HXX
#define _PATHEXPRESSION_HXX
// include for parent class
#include "computedexpression.hxx"
// includes for member variables
#include <vector>
// forward declaractions
namespace com { namespace sun { namespace star
{
namespace xml { namespace dom
{
class XNodeList;
namespace events { class XEventListener; }
} }
} } }
namespace xforms
{
/** PathExpression represents an XPath Expression and caches results */
class PathExpression : public ComputedExpression
{
public:
typedef std::vector<com::sun::star::uno::Reference<com::sun::star::xml::dom::XNode> > NodeVector_t;
private:
/// the node-list result from the last bind (cached from mxResult)
NodeVector_t maNodes;
protected:
/// get expression for evaluation
const rtl::OUString _getExpressionForEvaluation() const;
public:
PathExpression();
~PathExpression();
/// set the expression string
/// (overridden to do remove old listeners)
/// (also defines simple expressions)
void setExpression( const rtl::OUString& rExpression );
/// evaluate the expression relative to the content node.
bool evaluate( const xforms::EvaluationContext& rContext );
// get the result of this expression as node/node list/...
com::sun::star::uno::Reference<com::sun::star::xml::dom::XNode> getNode() const;
const NodeVector_t getNodeList() const;
com::sun::star::uno::Reference<com::sun::star::xml::dom::XNodeList> getXNodeList() const;
};
} // namespace xforms
#endif
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