149 lines
5.1 KiB
C++
149 lines
5.1 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: TSortIndex.hxx,v $
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*
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* $Revision: 1.5 $
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*
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* last change: $Author: rt $ $Date: 2005-09-08 06:40:29 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef CONNECTIVITY_TSORTINDEX_HXX
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#define CONNECTIVITY_TSORTINDEX_HXX
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#ifndef CONNECTIVITY_TKEYVALUE_HXX
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#include "TKeyValue.hxx"
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#endif
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namespace connectivity
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{
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typedef enum
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{
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SQL_ORDERBYKEY_NONE, // do not sort
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SQL_ORDERBYKEY_DOUBLE, // numeric key
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SQL_ORDERBYKEY_STRING // String Key
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} OKeyType;
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typedef enum
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{
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SQL_ASC = 1, // ascending
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SQL_DESC = -1 // otherwise
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} TAscendingOrder;
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class OKeySet;
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class OKeyValue; // simple class which holds a sal_Int32 and a ::std::vector<ORowSetValueDecoratorRef>
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/**
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The class OSortIndex can be used to implement a sorted index.
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This can depend on the fields which should be sorted.
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*/
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class OSortIndex
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{
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public:
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typedef ::std::vector< ::std::pair<sal_Int32,OKeyValue*> > TIntValuePairVector;
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typedef ::std::vector<OKeyType> TKeyTypeVector;
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private:
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TIntValuePairVector m_aKeyValues;
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TKeyTypeVector m_aKeyType;
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::std::vector<sal_Int16> m_aAscending;
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sal_Bool m_bFrozen;
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public:
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OSortIndex( const ::std::vector<OKeyType>& _aKeyType,
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const ::std::vector<sal_Int16>& _aAscending);
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~OSortIndex();
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inline static void * SAL_CALL operator new( size_t nSize ) SAL_THROW( () )
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{ return ::rtl_allocateMemory( nSize ); }
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inline static void * SAL_CALL operator new( size_t nSize,void* _pHint ) SAL_THROW( () )
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{ return _pHint; }
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inline static void SAL_CALL operator delete( void * pMem ) SAL_THROW( () )
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{ ::rtl_freeMemory( pMem ); }
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inline static void SAL_CALL operator delete( void * pMem,void* _pHint ) SAL_THROW( () )
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{ }
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/**
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AddKeyValue appends a new value.
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@param
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pKeyValue the keyvalue to be appended
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ATTENTION: when the sortindex is already frozen the parameter will be deleted
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*/
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void AddKeyValue(OKeyValue * pKeyValue);
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/**
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Freeze freezes the sortindex so that new values could only be appended by their value
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*/
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void Freeze();
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/**
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CreateKeySet creates the keyset which vaalues could be used to travel in your table/result
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The returned keyset is frozen.
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*/
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::vos::ORef<OKeySet> CreateKeySet();
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// look at the name
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sal_Bool IsFrozen() const { return m_bFrozen; }
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// returns the current size of the keyvalues
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sal_Int32 Count() const { return m_aKeyValues.size(); }
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/** GetValue returns the value at position nPos (1..n) [sorted access].
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It only allowed to call this method after the sortindex has been frozen.
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*/
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sal_Int32 GetValue(sal_Int32 nPos) const;
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inline const ::std::vector<OKeyType>& getKeyType() const { return m_aKeyType; }
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inline sal_Int16 getAscending(::std::vector<sal_Int16>::size_type _nPos) const { return m_aAscending[_nPos]; }
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};
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/**
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The class OKeySet is a refcountable vector which also has a state.
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This state gives information about if the keyset is fixed.
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*/
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class OKeySet : public ORefVector<sal_Int32>
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{
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sal_Bool m_bFrozen;
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public:
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OKeySet()
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: ORefVector<sal_Int32>()
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, m_bFrozen(sal_False){}
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OKeySet(size_type _nSize)
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: ORefVector<sal_Int32>(_nSize)
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, m_bFrozen(sal_False){}
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sal_Bool isFrozen() const { return m_bFrozen; }
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void setFrozen(sal_Bool _bFrozen=sal_True) { m_bFrozen = _bFrozen; }
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};
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}
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#endif // CONNECTIVITY_TSORTINDEX_HXX
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