connectivity/source/drivers/odbc/OResultSetMetaData.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 #include <odbc/OResultSetMetaData.hxx>
  21 #include <odbc/OTools.hxx>
  22
  23 using namespace connectivity::odbc;
  24 using namespace com::sun::star::uno;
  25 using namespace com::sun::star::lang;
  26 using namespace com::sun::star::sdbc;
  27
  28
  29 OResultSetMetaData::~OResultSetMetaData()
  30 {
  31 }
  32
  33 OUString OResultSetMetaData::getCharColAttrib(sal_Int32 _column,sal_Int32 ident)
  34 {
  35     sal_Int32 column = _column;
  36     if(_column <static_cast<sal_Int32>(m_vMapping.size())) // use mapping
  37         column = m_vMapping[_column];
  38
  39     SQLSMALLINT BUFFER_LEN = 128;
  40     std::unique_ptr<char[]> pName(new char[BUFFER_LEN+1]);
  41     SQLSMALLINT nRealLen=0;
  42     SQLRETURN nRet = N3SQLColAttribute(m_aStatementHandle,
  43                                     static_cast<SQLUSMALLINT>(column),
  44                                     static_cast<SQLUSMALLINT>(ident),
  45                                     static_cast<SQLPOINTER>(pName.get()),
  46                                     BUFFER_LEN,
  47                                     &nRealLen,
  48                                     nullptr
  49                                     );
  50     OUString sValue;
  51     if ( nRet == SQL_SUCCESS )
  52     {
  53         if ( nRealLen < 0 )
  54             nRealLen = BUFFER_LEN;
  55         sValue = OUString(pName.get(),nRealLen,m_pConnection->getTextEncoding());
  56     }
  57     pName.reset();
  58     OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
  59     if(nRealLen > BUFFER_LEN)
  60     {
  61         pName.reset(new char[nRealLen+1]);
  62         nRet = N3SQLColAttribute(m_aStatementHandle,
  63                                     static_cast<SQLUSMALLINT>(column),
  64                                     static_cast<SQLUSMALLINT>(ident),
  65                                     static_cast<SQLPOINTER>(pName.get()),
  66                                     nRealLen,
  67                                     &nRealLen,
  68                                     nullptr
  69                                     );
  70         if ( nRet == SQL_SUCCESS && nRealLen > 0)
  71             sValue = OUString(pName.get(),nRealLen,m_pConnection->getTextEncoding());
  72         OTools::ThrowException(m_pConnection,nRet,m_aStatementHandle,SQL_HANDLE_STMT,*this);
  73     }
  74
  75     return  sValue;
  76 }
  77
  78 SQLLEN OResultSetMetaData::getNumColAttrib(OConnection const * _pConnection
  79                                               ,SQLHANDLE _aStatementHandle
  80                                               ,const css::uno::Reference< css::uno::XInterface >& _xInterface
  81                                               ,sal_Int32 _column
  82                                               ,sal_Int32 _ident)
  83 {
  84     SQLLEN nValue=0;
  85     OTools::ThrowException(_pConnection,(*reinterpret_cast<T3SQLColAttribute>(_pConnection->getOdbcFunction(ODBC3SQLFunctionId::ColAttribute)))(_aStatementHandle,
  86                                          static_cast<SQLUSMALLINT>(_column),
  87                                          static_cast<SQLUSMALLINT>(_ident),
  88                                          nullptr,
  89                                          0,
  90                                          nullptr,
  91                                          &nValue),_aStatementHandle,SQL_HANDLE_STMT,_xInterface);
  92     return nValue;
  93 }
  94
  95 sal_Int32 OResultSetMetaData::getNumColAttrib(sal_Int32 _column,sal_Int32 ident)
  96 {
  97     sal_Int32 column = _column;
  98     if(_column < static_cast<sal_Int32>(m_vMapping.size())) // use mapping
  99         column = m_vMapping[_column];
 100
 101     return getNumColAttrib(m_pConnection,m_aStatementHandle,*this,column,ident);
 102 }
 103
 104 sal_Int32 SAL_CALL OResultSetMetaData::getColumnDisplaySize( sal_Int32 column )
 105 {
 106     return getNumColAttrib(column,SQL_DESC_DISPLAY_SIZE);
 107 }
 108
 109 SQLSMALLINT OResultSetMetaData::getColumnODBCType(OConnection const * _pConnection
 110                                               ,SQLHANDLE _aStatementHandle
 111                                               ,const css::uno::Reference< css::uno::XInterface >& _xInterface
 112                                               ,sal_Int32 column)
 113 {
 114     SQLSMALLINT nType = 0;
 115     try
 116     {
 117         nType = static_cast<SQLSMALLINT>(getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column,SQL_DESC_CONCISE_TYPE));
 118         if(nType == SQL_UNKNOWN_TYPE)
 119             nType = static_cast<SQLSMALLINT>(getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column, SQL_DESC_TYPE));
 120     }
 121     catch(SQLException& ) // in this case we have an odbc 2.0 driver
 122     {
 123         nType = static_cast<SQLSMALLINT>(getNumColAttrib(_pConnection,_aStatementHandle,_xInterface,column,SQL_DESC_CONCISE_TYPE ));
 124     }
 125
 126     return nType;
 127 }
 128
 129 sal_Int32 SAL_CALL OResultSetMetaData::getColumnType( sal_Int32 column )
 130 {
 131     std::map<sal_Int32,sal_Int32>::iterator aFind = m_aColumnTypes.find(column);
 132     if ( aFind == m_aColumnTypes.end() )
 133     {
 134         sal_Int32 nType = 0;
 135         if(!m_bUseODBC2Types)
 136         {
 137             try
 138             {
 139                 nType = getNumColAttrib(column,SQL_DESC_CONCISE_TYPE);
 140                 if(nType == SQL_UNKNOWN_TYPE)
 141                     nType = getNumColAttrib(column, SQL_DESC_TYPE);
 142                 nType = OTools::MapOdbcType2Jdbc(nType);
 143             }
 144             catch(SQLException& ) // in this case we have an odbc 2.0 driver
 145             {
 146                 m_bUseODBC2Types = true;
 147                 nType = OTools::MapOdbcType2Jdbc(getNumColAttrib(column,SQL_DESC_CONCISE_TYPE ));
 148             }
 149         }
 150         else
 151             nType = OTools::MapOdbcType2Jdbc(getNumColAttrib(column,SQL_DESC_CONCISE_TYPE ));
 152         aFind = m_aColumnTypes.emplace(column,nType).first;
 153     }
 154
 155
 156     return aFind->second;
 157 }
 158
 159
 160 sal_Int32 SAL_CALL OResultSetMetaData::getColumnCount(  )
 161 {
 162     if(m_nColCount != -1)
 163         return m_nColCount;
 164     sal_Int16 nNumResultCols=0;
 165     OTools::ThrowException(m_pConnection,N3SQLNumResultCols(m_aStatementHandle,&nNumResultCols),m_aStatementHandle,SQL_HANDLE_STMT,*this);
 166     m_nColCount = nNumResultCols;
 167     return m_nColCount;
 168 }
 169
 170
 171 sal_Bool SAL_CALL OResultSetMetaData::isCaseSensitive( sal_Int32 column )
 172 {
 173     return getNumColAttrib(column,SQL_DESC_CASE_SENSITIVE) == SQL_TRUE;
 174 }
 175
 176
 177 OUString SAL_CALL OResultSetMetaData::getSchemaName( sal_Int32 column )
 178 {
 179     return getCharColAttrib(column,SQL_DESC_SCHEMA_NAME);
 180 }
 181
 182
 183 OUString SAL_CALL OResultSetMetaData::getColumnName( sal_Int32 column )
 184 {
 185     return getCharColAttrib(column,SQL_DESC_NAME);
 186 }
 187
 188 OUString SAL_CALL OResultSetMetaData::getTableName( sal_Int32 column )
 189 {
 190     return getCharColAttrib(column,SQL_DESC_TABLE_NAME);
 191 }
 192
 193 OUString SAL_CALL OResultSetMetaData::getCatalogName( sal_Int32 column )
 194 {
 195     return getCharColAttrib(column,SQL_DESC_CATALOG_NAME);
 196 }
 197
 198 OUString SAL_CALL OResultSetMetaData::getColumnTypeName( sal_Int32 column )
 199 {
 200     return getCharColAttrib(column,SQL_DESC_TYPE_NAME);
 201 }
 202
 203 OUString SAL_CALL OResultSetMetaData::getColumnLabel( sal_Int32 column )
 204 {
 205     return getCharColAttrib(column,SQL_DESC_LABEL);
 206 }
 207
 208 OUString SAL_CALL OResultSetMetaData::getColumnServiceName( sal_Int32 /*column*/ )
 209 {
 210     return OUString();
 211 }
 212
 213
 214 sal_Bool SAL_CALL OResultSetMetaData::isCurrency( sal_Int32 column )
 215 {
 216     return getNumColAttrib(column,SQL_DESC_FIXED_PREC_SCALE) == SQL_TRUE;
 217 }
 218
 219
 220 sal_Bool SAL_CALL OResultSetMetaData::isAutoIncrement( sal_Int32 column )
 221 {
 222     return getNumColAttrib(column,SQL_DESC_AUTO_UNIQUE_VALUE) == SQL_TRUE;
 223 }
 224
 225
 226 sal_Bool SAL_CALL OResultSetMetaData::isSigned( sal_Int32 column )
 227 {
 228     return getNumColAttrib(column,SQL_DESC_UNSIGNED) == SQL_FALSE;
 229 }
 230
 231 sal_Int32 SAL_CALL OResultSetMetaData::getPrecision( sal_Int32 column )
 232 {
 233     sal_Int32 nType = 0;
 234     try
 235     {
 236         nType = getNumColAttrib(column,SQL_DESC_PRECISION);
 237     }
 238     catch(const SQLException& ) // in this case we have an odbc 2.0 driver
 239     {
 240         m_bUseODBC2Types = true;
 241         nType = getNumColAttrib(column,SQL_COLUMN_PRECISION );
 242     }
 243     return nType;
 244 }
 245
 246 sal_Int32 SAL_CALL OResultSetMetaData::getScale( sal_Int32 column )
 247 {
 248     sal_Int32 nType = 0;
 249     try
 250     {
 251         nType = getNumColAttrib(column,SQL_DESC_SCALE);
 252     }
 253     catch(const SQLException& ) // in this case we have an odbc 2.0 driver
 254     {
 255         m_bUseODBC2Types = true;
 256         nType = getNumColAttrib(column,SQL_COLUMN_SCALE );
 257     }
 258     return nType;
 259 }
 260
 261
 262 sal_Int32 SAL_CALL OResultSetMetaData::isNullable( sal_Int32 column )
 263 {
 264     return getNumColAttrib(column,SQL_DESC_NULLABLE);
 265 }
 266
 267
 268 sal_Bool SAL_CALL OResultSetMetaData::isSearchable( sal_Int32 column )
 269 {
 270     return getNumColAttrib(column,SQL_DESC_SEARCHABLE) != SQL_PRED_NONE;
 271 }
 272
 273
 274 sal_Bool SAL_CALL OResultSetMetaData::isReadOnly( sal_Int32 column )
 275 {
 276     return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_READONLY;
 277 }
 278
 279
 280 sal_Bool SAL_CALL OResultSetMetaData::isDefinitelyWritable( sal_Int32 column )
 281 {
 282     return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
 283 }
 284
 285 sal_Bool SAL_CALL OResultSetMetaData::isWritable( sal_Int32 column )
 286 {
 287     return getNumColAttrib(column,SQL_DESC_UPDATABLE) == SQL_ATTR_WRITE;
 288 }
 289
 290
 291 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */