| # Gaudi Framework, version v22r2 |

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# PoolDbTupleCallback Class Reference

Description: Specialized callback to handle N-tuple interactions while saving and lodaing POOL data. More...

`#include <PoolDbTupleCallback.h>`

Inheritance diagram for PoolDbTupleCallback:
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Collaboration diagram for PoolDbTupleCallback:
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List of all members.

## Public Member Functions
| PoolDbTupleCallback (DataObject *pObj)
| Initializing constructor for N-tuple callback object.
virtual | ~PoolDbTupleCallback ()
| Standard Destructor.
virtual pool::DataCallBack * | clone () const
| Virtual copy.
virtual void | release ()
| Virtual delete.
std::vector< void * > & | addresses ()
| Access to the bound addresses.
const std::vector< int > & | mapping ()
| Access re-direction map.
std::vector< PoolDbTokenWrap * > & | links ()
| Access to pointers of the links.
pool::DbBlob & | stream ()
| Access to streambuffer object, for items which must be blobified.
pool::DbSelect * | iterator () const
| Access to select statement.
pool::DbSelect * | select (ISelectStatement *sel)
| Select new tokens according to new selection criteria.
void | configure (const INTuple *pTuple, const pool::DbTypeInfo *typ, const pool::DbContainer &cntH)
| Configure N-tuple callback and store properties for re-use.
virtual pool::DbStatus | start (CallType action_type, void *pObj, void **context)
| Callback when a read sequence should be started.
virtual pool::DbStatus | end (CallType action_type, void *context)
| Callback when a read sequence should be started.
virtual pool::DbStatus | bind (CallType action_type, const pool::DbColumn *col_ident, int col_number, void *context, void **data_pointer)
| Callback to retrieve the absolute address of a column.
## Private Types
typedef const ROOT::Reflex::Type & | TypeH
| Reflection information.
## Private Attributes
std::vector< void * > | m_addr
| Vector with all addresses mapped.
std::vector< PoolDbTokenWrap > | m_links
| Vector to store pointers link information for address columns.
std::vector< PoolDbTokenWrap * > | m_plinks
| Vector to store pointers link information for address columns.
std::vector< int > | m_map
| Redirection map between N-tuple columns and DbTypeInfo columns.
pool::DbSelect * | m_iter
| Pointer to hold the select statement.
pool::DbBlob | m_stream
| Reference to streambuffer to hold blobified data.
pool::DbContainer | m_cntH
| Pointer to pool container handle.
long | m_refCount
| Reference counter.

## Detailed Description

Description: Specialized callback to handle N-tuple interactions while saving and lodaing POOL data.

Author:
  M.Frank

Version:
  1.0

Definition at line 41 of file PoolDbTupleCallback.h.

## Member Typedef Documentation

typedef const ROOT::Reflex::Type& PoolDbTupleCallback::TypeH`[private]`

Reflection information.

Reimplemented from pool::DataCallBack.

Definition at line 46 of file PoolDbTupleCallback.h.

## Constructor & Destructor Documentation

PoolDbTupleCallback::PoolDbTupleCallback | ( | DataObject * | pObj ) |

Initializing constructor for N-tuple callback object.

Parameters:

  svc | [IN] Manager interface of conversion service
  pObj | [IN] Pointer to N-tuple object
  reading | [IN] Read/Write flag (Needed by base class

Returns:
  Reference to object

Definition at line 33 of file PoolDbTupleCallback.cpp.

    : pool::DbDefaultDataHandler(),
      pool::DbObjectCallBack(0),
      m_iter(0), m_cntH(pool::POOL_StorageType)
    {
      m_refCount = 1;
      setObject(pObj);
      s_count->increment();
    }

PoolDbTupleCallback::~PoolDbTupleCallback | ( | ) | `[virtual]`

Standard Destructor.

Definition at line 44 of file PoolDbTupleCallback.cpp.

    {
      pool::deletePtr(m_iter);
      s_count->decrement();
      const pool::DbTypeInfo* typ = (const pool::DbTypeInfo*)shape();
      if ( typ ) typ->deleteRef();
    }

## Member Function Documentation

std::vector<void*>& PoolDbTupleCallback::addresses | ( | ) | `[inline]`

Access to the bound addresses.

Definition at line 81 of file PoolDbTupleCallback.h.

    {  return m_addr;     }

pool::DbStatus PoolDbTupleCallback::bind | ( | CallType | action_type,
|  | const pool::DbColumn * | col_ident,
|  | int | col_number,
|  | void * | context,
|  | void ** | data_pointer
| ) |  | `[virtual]`

Callback to retrieve the absolute address of a column.

Reimplemented from pool::DbObjectCallBack.

Definition at line 132 of file PoolDbTupleCallback.cpp.

    {
      switch(action_type)  {
      case GET:
        *data_pointer = m_addr[col_number];
        break;
      case PUT:
        *data_pointer = m_addr[col_number];
        break;
      }
      return pool::Success;
    }

pool::DataCallBack * PoolDbTupleCallback::clone | ( | ) | const`[virtual]`

Virtual copy.

Reimplemented from pool::DbObjectCallBack.

Definition at line 53 of file PoolDbTupleCallback.cpp.

    {
      PoolDbTupleCallback* cb = const_cast<PoolDbTupleCallback*>(this);
      cb->m_refCount++;
      return cb;
    }

void PoolDbTupleCallback::configure | ( | const INTuple * | pTuple,
|  | const pool::DbTypeInfo * | typ,
|  | const pool::DbContainer & | cntH
| ) |  |

Configure N-tuple callback and store properties for re-use.

Definition at line 69 of file PoolDbTupleCallback.cpp.

    {
      pool::DbTypeInfo::Columns::const_iterator ic;
      const INTuple::ItemContainer& items = pTuple->items();
      const pool::DbTypeInfo::Columns& cols = typ->columns();
      size_t colsize = cols.size();
      m_map.resize(items.size()+1,-1);
      for(size_t item_no = 0; item_no < items.size(); ++item_no ) {
        int icc = 0;
        m_map[item_no] = -1;
        const std::string& itm_nam = items[item_no]->name();
        for (ic=cols.begin(); ic != cols.end(); ++ic, ++icc )  {
          if ( (*ic)->name() == itm_nam )  {
            m_map[item_no] = icc;
            break;
          }
        }
      }
      m_addr.resize(colsize);
      m_addr[colsize-1] = &m_stream;
      m_links.resize(m_map.size());
      m_plinks.resize(m_map.size());
      for(size_t i = 0; i < m_map.size(); ++i )  {
        m_plinks[i] = &m_links[i];
      }
      m_cntH = cntH;
      typ->addRef();
      setShape(typ);
    }

pool::DbStatus PoolDbTupleCallback::end | ( | CallType | action_type,
|  | void * | context
| ) |  | `[virtual]`

Callback when a read sequence should be started.

Reimplemented from pool::DbObjectCallBack.

Definition at line 124 of file PoolDbTupleCallback.cpp.

    {
      return pool::Success;
    }

pool::DbSelect* PoolDbTupleCallback::iterator | ( | ) | const`[inline]`

Access to select statement.

Definition at line 89 of file PoolDbTupleCallback.h.

    {  return m_iter;     }

std::vector<PoolDbTokenWrap*>& PoolDbTupleCallback::links | ( | ) | `[inline]`

Access to pointers of the links.

Definition at line 85 of file PoolDbTupleCallback.h.

    {  return m_plinks; }

const std::vector<int>& PoolDbTupleCallback::mapping | ( | ) | `[inline]`

Access re-direction map.

Definition at line 83 of file PoolDbTupleCallback.h.

    {  return m_map;      }

void PoolDbTupleCallback::release | ( | ) | `[virtual]`

Virtual delete.

Reimplemented from pool::DataCallBack.

Definition at line 61 of file PoolDbTupleCallback.cpp.

    {
      if ( --m_refCount <= 0 ) {
        delete this;
      }
    }

pool::DbSelect * PoolDbTupleCallback::select | ( | ISelectStatement * | sel ) |

Select new tokens according to new selection criteria.

Definition at line 102 of file PoolDbTupleCallback.cpp.

                                                      {
      pool::deletePtr(m_iter);
      if ( m_cntH.isValid() )  {
        std::string criteria = (sel && (sel->type() & ISelectStatement::STRING))
          ? sel->criteria() : std::string("");
        m_iter = new pool::DbSelect( criteria );
        pool::DbDatabase dbH = m_cntH.containedIn();
        m_iter->start(dbH, m_cntH.name());
      }
      return m_iter;
    }

pool::DbStatus PoolDbTupleCallback::start | ( | CallType | action_type,
|  | void * | pObj,
|  | void ** | context
| ) |  | `[virtual]`

Callback when a read sequence should be started.

Reimplemented from pool::DbObjectCallBack.

Definition at line 116 of file PoolDbTupleCallback.cpp.

    {
      return pool::Success;
    }

pool::DbBlob& PoolDbTupleCallback::stream | ( | ) | `[inline]`

Access to streambuffer object, for items which must be blobified.

Definition at line 87 of file PoolDbTupleCallback.h.

    {  return m_stream;   }

## Member Data Documentation

std::vector< void* > PoolDbTupleCallback::m_addr`[private]`

Vector with all addresses mapped.

Definition at line 48 of file PoolDbTupleCallback.h.

pool::DbContainer PoolDbTupleCallback::m_cntH`[private]`

Pointer to pool container handle.

Definition at line 60 of file PoolDbTupleCallback.h.

pool::DbSelect* PoolDbTupleCallback::m_iter`[private]`

Pointer to hold the select statement.

Definition at line 56 of file PoolDbTupleCallback.h.

std::vector<PoolDbTokenWrap> PoolDbTupleCallback::m_links`[private]`

Vector to store pointers link information for address columns.

Definition at line 50 of file PoolDbTupleCallback.h.

std::vector<int> PoolDbTupleCallback::m_map`[private]`

Redirection map between N-tuple columns and DbTypeInfo columns.

Definition at line 54 of file PoolDbTupleCallback.h.

std::vector<PoolDbTokenWrap*> PoolDbTupleCallback::m_plinks`[private]`

Vector to store pointers link information for address columns.

Definition at line 52 of file PoolDbTupleCallback.h.

long PoolDbTupleCallback::m_refCount`[private]`

Reference counter.

Definition at line 62 of file PoolDbTupleCallback.h.

pool::DbBlob PoolDbTupleCallback::m_stream`[private]`

Reference to streambuffer to hold blobified data.

Definition at line 58 of file PoolDbTupleCallback.h.

The documentation for this class was generated from the following files:

- /afs/.cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r2/GaudiPoolDb/GaudiPoolDb/PoolDbTupleCallback.h
- /afs/.cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r2/GaudiPoolDb/src/PoolDbTupleCallback.cpp

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