connectivity/source/drivers/postgresql/pq_updateableresultset.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*************************************************************************
   3  *
   4  *  Effective License of whole file:
   5  *
   6  *    This library is free software; you can redistribute it and/or
   7  *    modify it under the terms of the GNU Lesser General Public
   8  *    License version 2.1, as published by the Free Software Foundation.
   9  *
  10  *    This library is distributed in the hope that it will be useful,
  11  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *    Lesser General Public License for more details.
  14  *
  15  *    You should have received a copy of the GNU Lesser General Public
  16  *    License along with this library; if not, write to the Free Software
  17  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18  *    MA  02111-1307  USA
  19  *
  20  *  Parts "Copyright by Sun Microsystems, Inc" prior to August 2011:
  21  *
  22  *    The Contents of this file are made available subject to the terms of
  23  *    the GNU Lesser General Public License Version 2.1
  24  *
  25  *    Copyright: 200? by Sun Microsystems, Inc.
  26  *
  27  *    Contributor(s): Joerg Budischewski
  28  *
  29  *  All parts contributed on or after August 2011:
  30  *
  31  *    This Source Code Form is subject to the terms of the Mozilla Public
  32  *    License, v. 2.0. If a copy of the MPL was not distributed with this
  33  *    file, You can obtain one at http://mozilla.org/MPL/2.0/.
  34  *
  35  ************************************************************************/
  36
  37 #include <sal/log.hxx>
  38 #include <rtl/ustrbuf.hxx>
  39
  40 #include <cppuhelper/queryinterface.hxx>
  41 #include <cppuhelper/typeprovider.hxx>
  42 #include <com/sun/star/sdbc/SQLException.hpp>
  43 #include <com/sun/star/sdbc/XGeneratedResultSet.hpp>
  44
  45 #include "pq_updateableresultset.hxx"
  46 #include "pq_resultsetmetadata.hxx"
  47 #include "pq_tools.hxx"
  48 #include "pq_statics.hxx"
  49
  50 #include <string.h>
  51
  52 #include <connectivity/dbconversion.hxx>
  53
  54 using osl::MutexGuard;
  55
  56
  57 using com::sun::star::uno::Reference;
  58 using com::sun::star::uno::Sequence;
  59 using com::sun::star::uno::UNO_QUERY;
  60 using com::sun::star::uno::Any;
  61 using com::sun::star::uno::Type;
  62
  63 using com::sun::star::sdbc::XGeneratedResultSet;
  64 using com::sun::star::sdbc::XResultSetMetaDataSupplier;
  65 using com::sun::star::sdbc::SQLException;
  66 using com::sun::star::sdbc::XResultSet;
  67 using com::sun::star::sdbc::XCloseable;
  68 using com::sun::star::sdbc::XColumnLocate;
  69 using com::sun::star::sdbc::XResultSetUpdate;
  70 using com::sun::star::sdbc::XRowUpdate;
  71 using com::sun::star::sdbc::XRow;
  72 using com::sun::star::sdbc::XStatement;
  73
  74 using com::sun::star::beans::XFastPropertySet;
  75 using com::sun::star::beans::XPropertySet;
  76 using com::sun::star::beans::XMultiPropertySet;
  77
  78 using namespace dbtools;
  79
  80 namespace pq_sdbc_driver
  81 {
  82
  83
  84 css::uno::Reference< css::sdbc::XCloseable > UpdateableResultSet::createFromPGResultSet(
  85     const ::rtl::Reference< comphelper::RefCountedMutex > & mutex,
  86     const css::uno::Reference< css::uno::XInterface > &owner,
  87     ConnectionSettings **ppSettings,
  88     PGresult *result,
  89     const OUString &schema,
  90     const OUString &table,
  91     const std::vector< OUString > &primaryKey )
  92 {
  93     sal_Int32 columnCount = PQnfields( result );
  94     sal_Int32 rowCount = PQntuples( result );
  95     std::vector< OUString > columnNames( columnCount );
  96     for( int i = 0 ; i < columnCount ; i ++ )
  97     {
  98         char * name = PQfname( result, i );
  99         columnNames[i] = OUString( name, strlen(name), ConnectionSettings::encoding );
 100     }
 101     std::vector< std::vector< Any > > data( rowCount );
 102
 103     // copy all the data into unicode strings (also binaries, as we yet
 104     // don't know, what a binary is and what not!)
 105     for( int row = 0 ; row < rowCount ; row ++ )
 106     {
 107         std::vector< Any > aRow( columnCount );
 108         for( int col = 0 ; col < columnCount ; col ++ )
 109         {
 110             if( ! PQgetisnull( result, row, col ) )
 111             {
 112                 char * val = PQgetvalue( result, row, col );
 113
 114                 aRow[col] <<=
 115                     OUString( val, strlen( val ), ConnectionSettings::encoding );
 116             }
 117         }
 118         data[row] = aRow;
 119     }
 120
 121     UpdateableResultSet *pRS =  new UpdateableResultSet(
 122         mutex, owner, columnNames, data, ppSettings, schema, table, primaryKey );
 123
 124     Reference <XCloseable > ret = pRS; // give it a refcount
 125
 126     pRS->m_meta = new ResultSetMetaData( mutex, pRS,nullptr, ppSettings, result, schema, table );
 127
 128     PQclear( result ); // we don't need it anymore
 129
 130     return ret;
 131 }
 132
 133 css::uno::Any  UpdateableResultSet::queryInterface(
 134     const css::uno::Type & reqType )
 135 {
 136     Any ret = SequenceResultSet::queryInterface( reqType );
 137     if( ! ret.hasValue() )
 138         ret = ::cppu::queryInterface(
 139             reqType,
 140             static_cast< XResultSetUpdate * > ( this ),
 141             static_cast< XRowUpdate * > ( this ) );
 142     return ret;
 143 }
 144
 145
 146 css::uno::Sequence< css::uno::Type > UpdateableResultSet::getTypes()
 147 {
 148     static cppu::OTypeCollection collection(
 149         cppu::UnoType<XResultSetUpdate>::get(),
 150         cppu::UnoType<XRowUpdate>::get(),
 151         SequenceResultSet::getTypes());
 152
 153     return collection.getTypes();
 154
 155 }
 156
 157 css::uno::Sequence< sal_Int8> UpdateableResultSet::getImplementationId()
 158 {
 159     return css::uno::Sequence<sal_Int8>();
 160 }
 161
 162 OUString UpdateableResultSet::buildWhereClause()
 163 {
 164     OUString ret;
 165     if( !m_primaryKey.empty() )
 166     {
 167         OUStringBuffer buf( 128 );
 168         buf.append( " WHERE " );
 169         for( size_t i = 0 ; i < m_primaryKey.size() ; i ++ )
 170         {
 171             if( i > 0 )
 172                 buf.append( " AND " );
 173             sal_Int32 index = findColumn( m_primaryKey[i] );
 174             bufferQuoteIdentifier( buf, m_primaryKey[i], *m_ppSettings );
 175             buf.append( " = " );
 176             bufferQuoteConstant( buf, getString( index ), *m_ppSettings );
 177         }
 178         ret = buf.makeStringAndClear();
 179     }
 180     return ret;
 181 }
 182
 183
 184 void UpdateableResultSet::insertRow(  )
 185 {
 186     MutexGuard guard( m_xMutex->GetMutex() );
 187     SAL_INFO("connectivity.postgresql", "UpdateableResultSet::insertRow() got called");
 188
 189     if( ! m_insertRow )
 190         throw SQLException(
 191             "pq_resultset.insertRow: moveToInsertRow has not been called !",
 192             *this, OUString(), 1, Any() );
 193
 194     OUStringBuffer buf( 128 );
 195     buf.append( "INSERT INTO " );
 196     bufferQuoteQualifiedIdentifier( buf, m_schema, m_table, *m_ppSettings );
 197     buf.append( " ( " );
 198
 199     int columns = 0;
 200     for( UpdateableFieldVector::size_type i = 0 ; i < m_updateableField.size() ; i++ )
 201     {
 202         if( m_updateableField[i].isTouched )
 203         {
 204             if( columns > 0 )
 205                 buf.append( ", " );
 206             columns ++;
 207             bufferQuoteIdentifier( buf, m_columnNames[i], *m_ppSettings);
 208         }
 209     }
 210     buf.append( " ) VALUES ( " );
 211
 212     columns = 0;
 213     for(const UpdateableField & i : m_updateableField)
 214     {
 215         if( i.isTouched )
 216         {
 217             if( columns > 0 )
 218                 buf.append( " , " );
 219             columns ++;
 220             bufferQuoteAnyConstant( buf, i.value, *m_ppSettings );
 221
 222 //             OUString val;
 223 //             m_updateableField[i].value >>= val;
 224 //             buf.append( val );
 225 //                 OStringToOUString(val, (*m_ppSettings)->encoding ) );
 226         }
 227     }
 228
 229     buf.append( " )" );
 230
 231     Reference< XStatement > stmt =
 232         extractConnectionFromStatement(m_owner)->createStatement();
 233     DisposeGuard dispGuard( stmt );
 234     stmt->executeUpdate( buf.makeStringAndClear() );
 235
 236     // reflect the changes !
 237     m_rowCount ++;
 238     m_data.resize( m_rowCount );
 239     m_data[m_rowCount-1] = std::vector< Any > ( m_fieldCount );
 240     Reference< XGeneratedResultSet > result( stmt, UNO_QUERY );
 241     if( result.is() )
 242     {
 243         Reference< XResultSet > rs = result->getGeneratedValues();
 244         if( rs.is() && rs->next() )
 245         {
 246             Reference< XColumnLocate > columnLocate( rs, UNO_QUERY );
 247             Reference< XRow> xRow ( rs, UNO_QUERY );
 248             for( int i = 0 ; i < m_fieldCount ; i++ )
 249             {
 250                 int field = columnLocate->findColumn( m_columnNames[i] );
 251                 if( field >= 1 )
 252                 {
 253                     m_data[m_rowCount-1][i] <<=  xRow->getString( field );
 254 //                     printf( "adding %s %s\n" ,
 255 //                             OUStringToOString( m_columnNames[i], RTL_TEXTENCODING_ASCII_US).getStr(),
 256 //                             OUStringToOString( xRow->getString( field ), RTL_TEXTENCODING_ASCII_US).getStr() );
 257
 258                 }
 259             }
 260         }
 261         else
 262         {
 263             // do the best we can ( DEFAULT and AUTO increment values fail ! )
 264             for( int i = 0 ; i < m_fieldCount ; i ++ )
 265             {
 266                 if( m_updateableField[i].isTouched )
 267                     m_data[m_rowCount-1][i] = m_updateableField[i].value;
 268             }
 269         }
 270     }
 271
 272     // cleanup
 273     m_updateableField = UpdateableFieldVector();
 274 }
 275
 276 void UpdateableResultSet::updateRow(  )
 277 {
 278     MutexGuard guard( m_xMutex->GetMutex() );
 279     SAL_INFO("connectivity.postgresql", "UpdateableResultSet::updateRow() got called");
 280
 281     if( m_insertRow )
 282         throw SQLException(
 283             "pq_resultset.updateRow: moveToCurrentRow has not been called !",
 284             *this, OUString(), 1, Any() );
 285
 286     OUStringBuffer buf( 128 );
 287     buf.append( "UPDATE " );
 288     bufferQuoteQualifiedIdentifier( buf, m_schema, m_table, *m_ppSettings );
 289     buf.append( "SET " );
 290
 291     int columns = 0;
 292     for( UpdateableFieldVector::size_type i = 0; i < m_updateableField.size() ; i ++ )
 293     {
 294         if( m_updateableField[i].isTouched )
 295         {
 296             if( columns > 0 )
 297                 buf.append( ", " );
 298             columns ++;
 299
 300             buf.append( m_columnNames[i] );
 301             buf.append( " = " );
 302             bufferQuoteAnyConstant( buf, m_updateableField[i].value, *m_ppSettings );
 303 //             OUString val;
 304 //             m_updateableField[i].value >>= val;
 305 //             bufferQuoteConstant( buf, val ):
 306 //             buf.append( val );
 307         }
 308     }
 309     buf.append( buildWhereClause() );
 310
 311     Reference< XStatement > stmt = extractConnectionFromStatement(m_owner)->createStatement();
 312     DisposeGuard dispGuard( stmt );
 313     stmt->executeUpdate( buf.makeStringAndClear() );
 314
 315     // reflect the changes !
 316     for( int i = 0 ; i < m_fieldCount ; i ++ )
 317     {
 318         if( m_updateableField[i].isTouched  )
 319             m_data[m_row][i] = m_updateableField[i].value;
 320     }
 321     m_updateableField = UpdateableFieldVector();
 322 }
 323
 324 void UpdateableResultSet::deleteRow(  )
 325 {
 326     SAL_INFO("connectivity.postgresql", "UpdateableResultSet::deleteRow() got called");
 327
 328     if( m_insertRow )
 329         throw SQLException(
 330             "pq_resultset.deleteRow: deleteRow cannot be called when on insert row !",
 331             *this, OUString(), 1, Any() );
 332
 333     if( m_row < 0 || m_row >= m_rowCount )
 334     {
 335         throw SQLException(
 336             "deleteRow cannot be called on invalid row ("
 337             + OUString::number(m_row) + ")",
 338             *this, OUString(), 0, Any() );
 339     }
 340
 341     Reference< XStatement > stmt = extractConnectionFromStatement(m_owner)->createStatement();
 342     DisposeGuard dispGuard( stmt );
 343     OUStringBuffer buf( 128 );
 344     buf.append( "DELETE FROM " );
 345     bufferQuoteQualifiedIdentifier( buf, m_schema, m_table, *m_ppSettings );
 346     buf.append( " " );
 347     buf.append( buildWhereClause() );
 348
 349     stmt->executeUpdate( buf.makeStringAndClear() );
 350
 351     // reflect the changes !
 352     for( int i = m_row + 1; i < m_row ; i ++ )
 353     {
 354         m_data[i-1] = m_data[i];
 355     }
 356     m_rowCount --;
 357     m_data.resize( m_rowCount );
 358  }
 359
 360 void UpdateableResultSet::cancelRowUpdates(  )
 361 {
 362     MutexGuard guard( m_xMutex->GetMutex() );
 363     m_updateableField = UpdateableFieldVector();
 364 }
 365
 366 void UpdateableResultSet::moveToInsertRow(  )
 367 {
 368     m_insertRow = true;
 369 }
 370
 371 void UpdateableResultSet::moveToCurrentRow(  )
 372 {
 373     m_insertRow = false;
 374 }
 375
 376 void UpdateableResultSet::checkUpdate( sal_Int32 columnIndex)
 377 {
 378     checkColumnIndex( columnIndex );
 379     if( m_updateableField.empty() )
 380         m_updateableField = UpdateableFieldVector( m_fieldCount );
 381     m_updateableField[columnIndex-1].isTouched = true;
 382 }
 383
 384 void UpdateableResultSet::updateNull( sal_Int32 columnIndex )
 385 {
 386     MutexGuard guard( m_xMutex->GetMutex() );
 387     checkClosed();
 388     checkUpdate( columnIndex );
 389     m_updateableField[columnIndex-1].value = Any();
 390 }
 391
 392 void UpdateableResultSet::updateBoolean( sal_Int32 columnIndex, sal_Bool x )
 393 {
 394     MutexGuard guard( m_xMutex->GetMutex() );
 395     checkClosed();
 396     checkUpdate( columnIndex );
 397
 398     Statics &st = getStatics();
 399     m_updateableField[columnIndex-1].value <<=  ( x ? st.TRUE : st.FALSE );
 400
 401 }
 402
 403 void UpdateableResultSet::updateByte( sal_Int32 columnIndex, sal_Int8 x )
 404 {
 405     updateInt(columnIndex,x);
 406 }
 407
 408 void UpdateableResultSet::updateShort( sal_Int32 columnIndex, sal_Int16 x )
 409 {
 410     updateInt( columnIndex, x );
 411 }
 412
 413 void UpdateableResultSet::updateInt( sal_Int32 columnIndex, sal_Int32 x )
 414 {
 415     updateLong( columnIndex, x );
 416 //     MutexGuard guard( m_xMutex->GetMutex() );
 417 //     checkClosed();
 418 //     checkUpdate( columnIndex );
 419
 420 //     m_updateableField[columnIndex-1].value <<= OUString::valueOf( x );
 421
 422 }
 423
 424 void UpdateableResultSet::updateLong( sal_Int32 columnIndex, sal_Int64 x )
 425 {
 426     MutexGuard guard( m_xMutex->GetMutex() );
 427     checkClosed();
 428     checkUpdate( columnIndex );
 429
 430 //     OStringBuffer buf( 20 );
 431 //     buf.append( "'" );
 432 //     buf.append( (sal_Int64) x );
 433 //     buf.append( "'" );
 434     m_updateableField[columnIndex-1].value <<= OUString::number( x );
 435 }
 436
 437 void UpdateableResultSet::updateFloat( sal_Int32 columnIndex, float x )
 438 {
 439
 440     MutexGuard guard( m_xMutex->GetMutex() );
 441     checkClosed();
 442     checkUpdate( columnIndex );
 443
 444     m_updateableField[columnIndex-1].value <<= OUString::number( x );
 445 }
 446
 447 void UpdateableResultSet::updateDouble( sal_Int32 columnIndex, double x )
 448 {
 449     MutexGuard guard( m_xMutex->GetMutex() );
 450     checkClosed();
 451     checkUpdate( columnIndex );
 452
 453     m_updateableField[columnIndex-1].value <<= OUString::number( x );
 454 }
 455
 456 void UpdateableResultSet::updateString( sal_Int32 columnIndex, const OUString& x )
 457 {
 458     MutexGuard guard( m_xMutex->GetMutex() );
 459     checkClosed();
 460     checkUpdate( columnIndex );
 461
 462     m_updateableField[columnIndex-1].value <<= x;
 463 }
 464
 465 void UpdateableResultSet::updateBytes( sal_Int32 columnIndex, const css::uno::Sequence< sal_Int8 >& x )
 466 {
 467     MutexGuard guard( m_xMutex->GetMutex() );
 468     checkClosed();
 469     checkUpdate( columnIndex );
 470
 471     size_t len;
 472     unsigned char * escapedString =
 473         PQescapeBytea( reinterpret_cast<unsigned char const *>(x.getConstArray()), x.getLength(), &len);
 474     if( ! escapedString )
 475     {
 476         throw SQLException(
 477             "pq_preparedstatement.setBytes: Error during converting bytesequence to an SQL conform string",
 478             *this, OUString(), 1, Any() );
 479     }
 480 //     buf.append( (const char *)escapedString, len -1 );
 481
 482     m_updateableField[columnIndex-1].value <<=
 483         OUString( reinterpret_cast<char*>(escapedString), len, RTL_TEXTENCODING_ASCII_US );
 484     PQfreemem( escapedString );
 485 }
 486
 487 void UpdateableResultSet::updateDate( sal_Int32 columnIndex, const css::util::Date& x )
 488 {
 489     updateString( columnIndex, DBTypeConversion::toDateString( x ) );
 490 }
 491
 492 void UpdateableResultSet::updateTime( sal_Int32 columnIndex, const css::util::Time& x )
 493 {
 494     updateString( columnIndex, DBTypeConversion::toTimeString( x ) );
 495 }
 496
 497 void UpdateableResultSet::updateTimestamp( sal_Int32 columnIndex, const css::util::DateTime& x )
 498 {
 499     updateString( columnIndex, DBTypeConversion::toDateTimeString( x ) );
 500 }
 501
 502 void UpdateableResultSet::updateBinaryStream( sal_Int32 /* columnIndex */, const css::uno::Reference< css::io::XInputStream >& /* x */, sal_Int32 /* length */ )
 503 {
 504 }
 505
 506 void UpdateableResultSet::updateCharacterStream( sal_Int32 /* columnIndex */, const css::uno::Reference< css::io::XInputStream >& /* x */, sal_Int32 /* length */ )
 507 {
 508 }
 509
 510 void UpdateableResultSet::updateObject( sal_Int32 /* columnIndex */, const css::uno::Any& /* x */ )
 511 {
 512 }
 513
 514 void UpdateableResultSet::updateNumericObject( sal_Int32 /* columnIndex */, const css::uno::Any& /* x */, sal_Int32 /* scale */ )
 515 {
 516 }
 517
 518
 519 Sequence< Type > UpdateableResultSet::getStaticTypes( bool updateable )
 520 {
 521     if( updateable )
 522     {
 523         cppu::OTypeCollection collection(
 524             cppu::UnoType<XResultSetUpdate>::get(),
 525             cppu::UnoType<XRowUpdate>::get(),
 526 //             cppu::UnoType<css::sdbcx::XRowLocate>::get(),
 527             getStaticTypes( false /* updateable */ ) );
 528         return collection.getTypes();
 529     }
 530     else
 531     {
 532         cppu::OTypeCollection collection(
 533             cppu::UnoType<XResultSet>::get(),
 534             cppu::UnoType<XResultSetMetaDataSupplier>::get(),
 535             cppu::UnoType<XRow>::get(),
 536             cppu::UnoType<XColumnLocate>::get(),
 537             cppu::UnoType<XCloseable>::get(),
 538             cppu::UnoType<XPropertySet>::get(),
 539             cppu::UnoType<XFastPropertySet>::get(),
 540             cppu::UnoType<XMultiPropertySet>::get(),
 541             cppu::UnoType<css::lang::XComponent>::get(),  // OComponentHelper
 542             cppu::UnoType<css::lang::XTypeProvider>::get(),
 543             cppu::UnoType<css::uno::XAggregation>::get(),
 544             cppu::UnoType<css::uno::XWeak>::get());
 545         return collection.getTypes();
 546     }
 547 }
 548
 549 }
 550
 551 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */