ora::SelectOperation Class Reference

#include <RelationalOperation.h>

Inheritance diagram for ora::SelectOperation:

List of all members.

Public Member Functions
void	addBlobData (const std::string &columnName)
void	addData (const std::string &columnName, const std::type_info &columnType)
void	addId (const std::string &columnName)
void	addOrderId (const std::string &columnName)
void	addWhereId (const std::string &columnName)
coral::AttributeListSpecification &	attributeListSpecification ()
void	clear ()
coral::AttributeList &	data ()
void	execute ()
bool	nextCursorRow ()
	SelectOperation (const std::string &tableName, coral::ISchema &schema)
std::string &	whereClause ()
coral::AttributeList &	whereData ()
	~SelectOperation ()
Private Attributes
coral::ICursor *	m_cursor
std::vector< std::string >	m_orderByCols
std::auto_ptr< coral::IQuery >	m_query
coral::ISchema &	m_schema
coral::AttributeListSpecification *	m_spec
std::string	m_tableName
std::string	m_whereClause
coral::AttributeList	m_whereData

---

Detailed Description

Definition at line 159 of file RelationalOperation.h.

---

Constructor & Destructor Documentation

ora::SelectOperation::SelectOperation	(	const std::string &	tableName,
		coral::ISchema &	schema
	)		[explicit]

Definition at line 224 of file RelationalOperation.cc.

                                                             :
  m_spec( new coral::AttributeListSpecification ),
  m_whereData(),
  m_whereClause(""),
  m_orderByCols(),
  m_query(),
  m_cursor( 0 ),
  m_tableName( tableName ),
  m_schema( schema ){
}

ora::SelectOperation::~SelectOperation

(

)

Definition at line 236 of file RelationalOperation.cc.

                                    {
  m_spec->release();
}

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Member Function Documentation

void ora::SelectOperation::addBlobData

(

const std::string &

columnName

)

[virtual]

Implements ora::IRelationalData.

Definition at line 271 of file RelationalOperation.cc.

                                                                {
  if(m_spec->index( columnName )==-1){
    m_spec->extend<coral::Blob>( columnName );
  }
}

void ora::SelectOperation::addData	(	const std::string &	columnName,
		const std::type_info &	columnType
	)		[virtual]

Implements ora::IRelationalData.

Definition at line 264 of file RelationalOperation.cc.

                                                                   {
  if(m_spec->index( columnName )==-1){
    m_spec->extend( columnName, columnType );
  }
}

void ora::SelectOperation::addId

(

const std::string &

columnName

)

[virtual]

Implements ora::IRelationalData.

Definition at line 258 of file RelationalOperation.cc.

Referenced by ora::IteratorBuffer::IteratorBuffer().

                                                         {
  if(m_spec->index( columnName )==-1){
    m_spec->extend< int >( columnName );
  }
}

void ora::SelectOperation::addOrderId

(

const std::string &

columnName

)

Definition at line 240 of file RelationalOperation.cc.

Referenced by ora::IteratorBuffer::IteratorBuffer().

                                                              {
  m_orderByCols.push_back( columnName );
}

void ora::SelectOperation::addWhereId

(

const std::string &

columnName

)

[virtual]

Implements ora::IRelationalData.

Definition at line 277 of file RelationalOperation.cc.

References ora::existAttribute().

Referenced by ora::OraPtrReadBuffer::build(), and ora::ReadBuffer::ReadBuffer().

                                                                {
  if(!existAttribute( columnName, m_whereData )){
    m_whereData.extend<int>( columnName );
    if(!m_whereClause.empty()) m_whereClause += " AND ";
    m_whereClause += ( columnName +"= :"+columnName );
  }
}

coral::AttributeListSpecification & ora::SelectOperation::attributeListSpecification

(

)

Definition at line 317 of file RelationalOperation.cc.

                                                                               {
  return *m_spec;
}

void ora::SelectOperation::clear

(

void

)

Definition at line 253 of file RelationalOperation.cc.

Referenced by ora::ReadBuffer::read().

                              {
  m_query.reset();
  m_cursor = 0;
}

coral::AttributeList & ora::SelectOperation::data

(

)

[virtual]

Implements ora::IRelationalData.

Definition at line 285 of file RelationalOperation.cc.

References ora::throwException().

                                            {
  if(!m_cursor) throwException( "Query on table "+m_tableName+" has not been executed.",
                                "ora::ReadOperation::data" );
  return const_cast<coral::AttributeList&>(m_cursor->currentRow());
}

void ora::SelectOperation::execute

(

)

Definition at line 299 of file RelationalOperation.cc.

References asciidump::table.

Referenced by ora::ReadBuffer::read().

                                {
  m_cursor = 0;
  coral::ITable& table = m_schema.tableHandle( m_tableName );
  m_query.reset( table.newQuery() );
  for ( coral::AttributeListSpecification::const_iterator iSpec = m_spec->begin();
        iSpec != m_spec->end(); ++iSpec ) {
    m_query->addToOutputList( iSpec->name() );
    m_query->defineOutputType( iSpec->name(),iSpec->typeName());
  }
  for(std::vector<std::string>::iterator iCol = m_orderByCols.begin();
      iCol != m_orderByCols.end(); iCol++ ){
    m_query->addToOrderList( *iCol );
  }
  m_query->setCondition( m_whereClause, m_whereData );
  m_query->setRowCacheSize( 100 ); // We should better define this value !!!
  m_cursor = &m_query->execute();
}

bool ora::SelectOperation::nextCursorRow

(

)

Definition at line 244 of file RelationalOperation.cc.

References runTheMatrix::ret.

Referenced by ora::ReadBuffer::read().

                                      {
  bool ret = false;
  if( m_query.get() ){
    ret = m_cursor->next();
    if(!ret) clear();
  }
  return ret;
}

std::string & ora::SelectOperation::whereClause

(

)

[virtual]

Implements ora::IRelationalData.

Definition at line 295 of file RelationalOperation.cc.

                                          {
  return m_whereClause;
}

coral::AttributeList & ora::SelectOperation::whereData

(

)

[virtual]

Implements ora::IRelationalData.

Definition at line 291 of file RelationalOperation.cc.

Referenced by ora::ReadBuffer::read().

                                                 {
  return m_whereData;
}

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Member Data Documentation

coral::ICursor* ora::SelectOperation::m_cursor [private]

Definition at line 190 of file RelationalOperation.h.

std::vector<std::string> ora::SelectOperation::m_orderByCols [private]

Definition at line 188 of file RelationalOperation.h.

std::auto_ptr<coral::IQuery> ora::SelectOperation::m_query [private]

Definition at line 189 of file RelationalOperation.h.

coral::ISchema& ora::SelectOperation::m_schema [private]

Definition at line 192 of file RelationalOperation.h.

coral::AttributeListSpecification* ora::SelectOperation::m_spec [private]

Definition at line 185 of file RelationalOperation.h.

std::string ora::SelectOperation::m_tableName [private]

Definition at line 191 of file RelationalOperation.h.

std::string ora::SelectOperation::m_whereClause [private]

Definition at line 187 of file RelationalOperation.h.

coral::AttributeList ora::SelectOperation::m_whereData [private]

Definition at line 186 of file RelationalOperation.h.