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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* 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 DBACCESS_SOURCE_CORE_INC_COMPOSERTOOLS_HXX
#define DBACCESS_SOURCE_CORE_INC_COMPOSERTOOLS_HXX
/** === begin UNO includes === **/
/** === end UNO includes === **/
#ifndef _RTL_USTRBUF_HXX_
#include <rtl/ustrbuf.hxx>
#endif
#include <functional>
//........................................................................
namespace dbaccess
{
//........................................................................
//====================================================================
//= TokenComposer
//====================================================================
struct TokenComposer : public ::std::unary_function< ::rtl::OUString, void >
{
private:
#ifdef DBG_UTIL
bool m_bUsed;
#endif
protected:
::rtl::OUStringBuffer m_aBuffer;
public:
::rtl::OUString getComposedAndClear()
{
#ifdef DBG_UTIL
m_bUsed = true;
#endif
return m_aBuffer.makeStringAndClear();
}
void clear()
{
#ifdef DBG_UTIL
m_bUsed = false;
#endif
m_aBuffer.makeStringAndClear();
}
public:
TokenComposer()
#ifdef DBG_UTIL
:m_bUsed( false )
#endif
{
}
virtual ~TokenComposer()
{
}
void operator() (const ::rtl::OUString& lhs)
{
append(lhs);
}
void append( const ::rtl::OUString& lhs )
{
#ifdef DBG_UTIL
OSL_ENSURE( !m_bUsed, "FilterCreator::append: already used up!" );
#endif
if ( lhs.getLength() )
{
if ( m_aBuffer.getLength() )
appendNonEmptyToNonEmpty( lhs );
else
m_aBuffer.append( lhs );
}
}
/// append the given part. Only to be called when both the part and our buffer so far are not empty
virtual void appendNonEmptyToNonEmpty( const ::rtl::OUString& lhs ) = 0;
};
//====================================================================
//= FilterCreator
//====================================================================
struct FilterCreator : public TokenComposer
{
virtual void appendNonEmptyToNonEmpty( const ::rtl::OUString& lhs )
{
m_aBuffer.insert( 0, (sal_Unicode)' ' );
m_aBuffer.insert( 0, (sal_Unicode)'(' );
m_aBuffer.appendAscii( " ) AND ( " );
m_aBuffer.append( lhs );
m_aBuffer.appendAscii( " )" );
}
};
//====================================================================
//= FilterCreator
//====================================================================
struct OrderCreator : public TokenComposer
{
virtual void appendNonEmptyToNonEmpty( const ::rtl::OUString& lhs )
{
m_aBuffer.appendAscii( ", " );
m_aBuffer.append( lhs );
}
};
//........................................................................
} // namespace dbaccess
//........................................................................
#endif // DBACCESS_SOURCE_CORE_INC_COMPOSERTOOLS_HXX
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