dbaccess/source/core/api/StaticSet.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include "StaticSet.hxx"
  22 #include <com/sun/star/sdbcx/CompareBookmark.hpp>
  23 #include <com/sun/star/beans/XPropertySet.hpp>
  24 #include <connectivity/CommonTools.hxx>
  25 #include <comphelper/types.hxx>
  26 #include <o3tl/safeint.hxx>
  27 #include <osl/diagnose.h>
  28
  29 using namespace dbaccess;
  30 using namespace connectivity;
  31 using namespace ::com::sun::star::uno;
  32 using namespace ::com::sun::star::beans;
  33 using namespace ::com::sun::star::sdbc;
  34 using namespace ::com::sun::star::sdbcx;
  35 using namespace ::com::sun::star::container;
  36 using namespace ::com::sun::star::lang;
  37 using namespace ::osl;
  38
  39 void OStaticSet::fillValueRow(ORowSetRow& _rRow,sal_Int32 /*_nPosition*/)
  40 {
  41     _rRow = *m_aSetIter;
  42 }
  43
  44 // css::sdbcx::XRowLocate
  45 Any OStaticSet::getBookmark()
  46 {
  47     return Any(getRow());
  48 }
  49
  50 bool OStaticSet::moveToBookmark( const Any& bookmark )
  51 {
  52     m_bInserted = m_bUpdated = m_bDeleted = false;
  53     return absolute(::comphelper::getINT32(bookmark));
  54 }
  55
  56 sal_Int32 OStaticSet::compareBookmarks( const Any& _first, const Any& _second )
  57 {
  58     sal_Int32 nFirst = 0, nSecond = 0;
  59     _first >>= nFirst;
  60     _second >>= nSecond;
  61     return (nFirst < nSecond) ? CompareBookmark::LESS : ((nFirst > nSecond) ? CompareBookmark::GREATER : CompareBookmark::EQUAL);
  62 }
  63
  64 bool OStaticSet::hasOrderedBookmarks(  )
  65 {
  66     return true;
  67 }
  68
  69 sal_Int32 OStaticSet::hashBookmark( const Any& bookmark )
  70 {
  71     return ::comphelper::getINT32(bookmark);
  72 }
  73
  74 bool OStaticSet::fetchRow()
  75 {
  76     bool bRet = false;
  77     if ( !m_bEnd && (!m_nMaxRows || sal_Int32(m_aSet.size()) < m_nMaxRows) )
  78         bRet = m_xDriverSet->next();
  79     if ( bRet )
  80     {
  81         m_aSet.push_back(new connectivity::ORowVector< connectivity::ORowSetValue >(m_xSetMetaData->getColumnCount()));
  82         m_aSetIter = m_aSet.end() - 1;
  83         (**m_aSetIter)[0] = getRow();
  84         OCacheSet::fillValueRow(*m_aSetIter,(**m_aSetIter)[0].getInt32());
  85     }
  86     else
  87         m_bEnd = true;
  88     return bRet;
  89 }
  90
  91 void OStaticSet::fillAllRows()
  92 {
  93     if(m_bEnd)
  94         return;
  95
  96     sal_Int32 nColumnCount = m_xSetMetaData->getColumnCount();
  97     while(m_xDriverSet->next())
  98     {
  99         ORowSetRow pRow = new connectivity::ORowVector< connectivity::ORowSetValue >(nColumnCount);
 100         m_aSet.push_back(pRow);
 101         m_aSetIter = m_aSet.end() - 1;
 102         (*pRow)[0] = getRow();
 103         OCacheSet::fillValueRow(pRow,(*pRow)[0].getInt32());
 104     }
 105     m_bEnd = true;
 106 }
 107
 108 // XResultSet
 109 bool OStaticSet::next()
 110 {
 111     m_bInserted = m_bUpdated = m_bDeleted = false;
 112
 113     if(isAfterLast())
 114         return false;
 115     if(!m_bEnd) // not yet all records fetched
 116     {
 117         ++m_aSetIter;
 118         if(m_aSetIter == m_aSet.end() && !fetchRow())
 119             m_aSetIter = m_aSet.end();
 120     }
 121     else if(!isAfterLast())
 122         ++m_aSetIter;
 123     return !isAfterLast();
 124 }
 125
 126 bool OStaticSet::isBeforeFirst(  )
 127 {
 128     return m_aSetIter == m_aSet.begin();
 129 }
 130
 131 bool OStaticSet::isAfterLast(  )
 132 {
 133     return m_aSetIter == m_aSet.end() && m_bEnd;
 134 }
 135
 136 void OStaticSet::beforeFirst(  )
 137 {
 138     m_bInserted = m_bUpdated = m_bDeleted = false;
 139     m_aSetIter = m_aSet.begin();
 140 }
 141
 142 void OStaticSet::afterLast(  )
 143 {
 144     m_bInserted = m_bUpdated = m_bDeleted = false;
 145     fillAllRows();
 146     m_aSetIter = m_aSet.end();
 147 }
 148
 149 bool OStaticSet::first()
 150 {
 151     m_bInserted = m_bUpdated = m_bDeleted = false;
 152     m_aSetIter = m_aSet.begin()+1;
 153     if(m_aSetIter == m_aSet.end() && !fetchRow())
 154         m_aSetIter = m_aSet.end();
 155
 156     return m_aSetIter != m_aSet.end();
 157 }
 158
 159 bool OStaticSet::last()
 160 {
 161     m_bInserted = m_bUpdated = m_bDeleted = false;
 162     fillAllRows();
 163     m_aSetIter = m_aSet.end()-1;
 164
 165     return !isBeforeFirst() && !isAfterLast();
 166 }
 167
 168 sal_Int32 OStaticSet::getRow(  )
 169 {
 170     OSL_ENSURE(!isAfterLast(),"getRow is not allowed when afterlast record!");
 171     OSL_ENSURE(!isBeforeFirst(),"getRow is not allowed when beforefirst record!");
 172
 173     sal_Int32 nPos = m_aSet.size() - (m_aSet.end() - m_aSetIter);
 174     OSL_ENSURE(nPos > 0,"RowPos is < 0");
 175     return nPos;
 176 }
 177
 178 bool OStaticSet::absolute( sal_Int32 row )
 179 {
 180     m_bInserted = m_bUpdated = m_bDeleted = false;
 181     OSL_ENSURE(row,"OStaticSet::absolute: INVALID row number!");
 182     // if row greater 0 than count from end - row means last
 183     if(row < 0)
 184     {
 185         if(!m_bEnd)
 186             fillAllRows();
 187
 188         sal_Int32 nRow = getRow();
 189         nRow += row;
 190         if(nRow <= static_cast<sal_Int32>(m_aSet.size()))
 191             m_aSetIter = m_aSet.begin() + nRow;
 192         else
 193             m_aSetIter = m_aSet.begin();
 194     }
 195     else if(row > 0)
 196     {
 197         if(o3tl::make_unsigned(row) >= m_aSet.size())
 198         {
 199             if(!m_bEnd)
 200             {
 201                 bool bNext = true;
 202                 for(sal_Int32 i=m_aSet.size()-1;i < row && bNext;++i)
 203                     bNext = fetchRow();
 204             }
 205
 206             if(o3tl::make_unsigned(row) > m_aSet.size())
 207                 m_aSetIter = m_aSet.end();  // check again
 208             else
 209                 m_aSetIter = m_aSet.begin() + row;
 210         }
 211         else
 212             m_aSetIter = m_aSet.begin() + row;
 213     }
 214
 215     return m_aSetIter != m_aSet.end() && m_aSetIter != m_aSet.begin();
 216 }
 217
 218 bool OStaticSet::previous(  )
 219 {
 220     m_bInserted = m_bUpdated = m_bDeleted = false;
 221
 222     if(m_aSetIter != m_aSet.begin())
 223         --m_aSetIter;
 224
 225     return m_aSetIter != m_aSet.begin();
 226 }
 227
 228 void OStaticSet::refreshRow(  )
 229 {
 230 }
 231
 232 bool OStaticSet::rowUpdated(  )
 233 {
 234     return m_bUpdated;
 235 }
 236
 237 bool OStaticSet::rowInserted(  )
 238 {
 239     return m_bInserted;
 240 }
 241
 242 bool OStaticSet::rowDeleted(  )
 243 {
 244     return m_bDeleted;
 245 }
 246
 247 void OStaticSet::insertRow( const ORowSetRow& _rInsertRow,const connectivity::OSQLTable& _xTable )
 248 {
 249     OCacheSet::insertRow( _rInsertRow,_xTable);
 250     if(m_bInserted)
 251     {
 252         m_aSet.push_back(new ORowVector< ORowSetValue >(*_rInsertRow)); // we don't know where the new row is so we append it to the current rows
 253         m_aSetIter = m_aSet.end() - 1;
 254         (**m_aSetIter)[0] = (*_rInsertRow)[0] = getBookmark();
 255         m_bEnd = false;
 256     }
 257 }
 258
 259 void OStaticSet::deleteRow(const ORowSetRow& _rDeleteRow ,const connectivity::OSQLTable& _xTable  )
 260 {
 261     OCacheSet::deleteRow(_rDeleteRow,_xTable);
 262     if(m_bDeleted)
 263     {
 264         ORowSetMatrix::iterator aPos = m_aSet.begin()+(*_rDeleteRow)[0].getInt32();
 265         if(aPos == (m_aSet.end()-1))
 266             m_aSetIter = m_aSet.end();
 267         m_aSet.erase(aPos);
 268     }
 269 }
 270
 271 void OStaticSet::reset(const Reference< XResultSet> &_xDriverSet)
 272 {
 273     OCacheSet::construct(_xDriverSet, m_sRowSetFilter);
 274     ORowSetMatrix().swap(m_aSet);
 275     m_aSetIter = m_aSet.end();
 276     m_bEnd = false;
 277     m_aSet.emplace_back(nullptr); // this is the beforefirst record
 278 }
 279
 280 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */