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  • Committer: Barry.Leslie at PrimeBase
  • Date: 2010-10-20 20:41:00 UTC
  • mfrom: (1863 staging)
  • mto: This revision was merged to the branch mainline in revision 1871.
  • Revision ID: barry.leslie@primebase.com-20101020204100-oyj6p5cfssjw3p62
Merged with trunk.

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drizzled/table/instance.cc
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include <config.h>
 
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#include "config.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <drizzled/session.h>
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#include <plugin/myisam/myisam.h>
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#include <drizzled/plugin/transactional_storage_engine.h>
 
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#include "drizzled/session.h"
 
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#include "plugin/myisam/myisam.h"
 
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#include "drizzled/plugin/transactional_storage_engine.h"
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#include <drizzled/table.h>
 
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#include "drizzled/table.h"
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namespace drizzled
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{
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namespace table
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{
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Singular::Singular(Session *session, List<CreateField> &field_list) :
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  _share(message::Table::INTERNAL),
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  _has_variable_width(false)
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{
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  uint32_t field_count= field_list.elements;
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  uint32_t blob_count= 0;
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  Field **field_arg;
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  CreateField *cdef;                           /* column definition */
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  uint32_t record_length= 0;
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  uint32_t null_count= 0;                 /* number of columns which may be null */
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  uint32_t null_pack_length;              /* NULL representation array length */
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  getMutableShare()->setFields(field_count + 1);
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  setFields(getMutableShare()->getFields(true));
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  field_arg= getMutableShare()->getFields(true);
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  getMutableShare()->blob_field.resize(field_count+1);
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  getMutableShare()->setFieldSize(field_count);
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  getMutableShare()->blob_ptr_size= portable_sizeof_char_ptr;
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  setup_tmp_table_column_bitmaps();
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59
 
  in_use= session;           /* field_arg->reset() may access in_use */
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61
 
  /* Create all fields and calculate the total length of record */
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  List<CreateField>::iterator it(field_list.begin());
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  message::Table::Field null_field;
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  while ((cdef= it++))
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  {
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    *field_arg= getMutableShare()->make_field(null_field,
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                                              NULL,
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                                              cdef->length,
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                                              (cdef->flags & NOT_NULL_FLAG) ? false : true,
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                                              (unsigned char *) ((cdef->flags & NOT_NULL_FLAG) ? 0 : ""),
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                                              (cdef->flags & NOT_NULL_FLAG) ? 0 : 1,
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                                              cdef->decimals,
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                                              cdef->sql_type,
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                                              cdef->charset,
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                                              cdef->unireg_check,
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                                              cdef->interval,
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                                              cdef->field_name,
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                                              cdef->flags & UNSIGNED_FLAG ? true : false);
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    if (!*field_arg)
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    {
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      throw "Memory allocation failure";
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    }
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    (*field_arg)->init(this);
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    record_length+= (*field_arg)->pack_length();
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    if (! ((*field_arg)->flags & NOT_NULL_FLAG))
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      null_count++;
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    if ((*field_arg)->flags & BLOB_FLAG)
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      getMutableShare()->blob_field[blob_count++]= (uint32_t) (field_arg - getFields());
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    field_arg++;
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  }
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  *field_arg= NULL;                             /* mark the end of the list */
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  getMutableShare()->blob_field[blob_count]= 0;            /* mark the end of the list */
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  getMutableShare()->blob_fields= blob_count;
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  null_pack_length= (null_count + 7)/8;
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  getMutableShare()->setRecordLength(record_length + null_pack_length);
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  getMutableShare()->rec_buff_length= ALIGN_SIZE(getMutableShare()->getRecordLength() + 1);
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  record[0]= (unsigned char*)session->getMemRoot()->allocate(getMutableShare()->rec_buff_length);
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  if (not getInsertRecord())
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  {
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    throw "Memory allocation failure";
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  }
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  if (null_pack_length)
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  {
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    null_flags= (unsigned char*) getInsertRecord();
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    getMutableShare()->null_fields= null_count;
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    getMutableShare()->null_bytes= null_pack_length;
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  }
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  {
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    /* Set up field pointers */
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    unsigned char *null_pos= getInsertRecord();
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    unsigned char *field_pos= null_pos + getMutableShare()->null_bytes;
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    uint32_t null_bit= 1;
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    for (field_arg= getFields(); *field_arg; ++field_arg)
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    {
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      Field *cur_field= *field_arg;
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      if ((cur_field->flags & NOT_NULL_FLAG))
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        cur_field->move_field(field_pos);
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      else
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      {
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        cur_field->move_field(field_pos, (unsigned char*) null_pos, null_bit);
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        null_bit<<= 1;
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        if (null_bit == (1 << 8))
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        {
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          ++null_pos;
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          null_bit= 1;
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        }
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      }
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      cur_field->reset();
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      field_pos+= cur_field->pack_length();
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    }
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  }
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}
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bool Singular::open_tmp_table()
 
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bool Instance::open_tmp_table()
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{
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  int error;
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  identifier::Table identifier(getShare()->getSchemaName(), getShare()->getTableName(), getShare()->getPath());
 
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  TableIdentifier identifier(getShare()->getSchemaName(), getShare()->getTableName(), getShare()->getPath());
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  if ((error=cursor->ha_open(identifier,
 
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                             this,
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                             O_RDWR,
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                             HA_OPEN_TMP_TABLE | HA_OPEN_INTERNAL_TABLE)))
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  {
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     true  - Error
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*/
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bool Singular::create_myisam_tmp_table(KeyInfo *keyinfo,
 
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bool Instance::create_myisam_tmp_table(KeyInfo *keyinfo,
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                                                 MI_COLUMNDEF *start_recinfo,
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                                                 MI_COLUMNDEF **recinfo,
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                                                 uint64_t options)
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  return false;
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}
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void Instance::free_tmp_table(Session *session)
 
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{
 
191
  const char *save_proc_info;
 
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  save_proc_info= session->get_proc_info();
 
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  session->set_proc_info("removing tmp table");
 
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  // Release latches since this can take a long time
 
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  plugin::TransactionalStorageEngine::releaseTemporaryLatches(session);
 
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  if (cursor)
 
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  {
 
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    if (db_stat)
 
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    {
 
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      cursor->closeMarkForDelete(getShare()->getTableName());
 
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    }
 
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    TableIdentifier identifier(getShare()->getSchemaName(), getShare()->getTableName(), getShare()->getTableName());
 
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    getShare()->getEngine()->doDropTable(*session, identifier);
 
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    delete cursor;
 
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  }
 
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  /* free blobs */
 
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  for (Field **ptr= getFields() ; *ptr ; ptr++)
 
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  {
 
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    (*ptr)->free();
 
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  }
 
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  free_io_cache();
 
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  getMemRoot()->free_root(MYF(0));
 
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  session->set_proc_info(save_proc_info);
 
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}
 
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/*
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  Set up column usage bitmaps for a temporary table
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    a tmp_set bitmap to be used by things like filesort.
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*/
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void Singular::setup_tmp_table_column_bitmaps()
 
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void Instance::setup_tmp_table_column_bitmaps()
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{
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  uint32_t field_count= getShare()->sizeFields();
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  default_column_bitmaps();
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}
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Singular::~Singular()
 
245
Instance::~Instance()
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{
313
 
  const char *save_proc_info;
314
 
 
315
 
  save_proc_info= in_use->get_proc_info();
316
 
  in_use->set_proc_info("removing tmp table");
317
 
 
318
 
  // Release latches since this can take a long time
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  plugin::TransactionalStorageEngine::releaseTemporaryLatches(in_use);
320
 
 
321
 
  if (cursor)
322
 
  {
323
 
    if (db_stat)
324
 
    {
325
 
      cursor->closeMarkForDelete(getShare()->getTableName());
326
 
    }
327
 
 
328
 
    identifier::Table identifier(getShare()->getSchemaName(), getShare()->getTableName(), getShare()->getTableName());
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    drizzled::error_t ignored;
330
 
    plugin::StorageEngine::dropTable(*in_use,
331
 
                                     *getShare()->getEngine(),
332
 
                                     identifier,
333
 
                                     ignored);
334
 
 
335
 
    delete cursor;
336
 
  }
337
 
 
338
 
  /* free blobs */
339
 
  for (Field **ptr= getFields() ; *ptr ; ptr++)
340
 
  {
341
 
    (*ptr)->free();
342
 
  }
343
 
  free_io_cache();
344
 
 
345
 
  getMemRoot()->free_root(MYF(0));
346
 
  in_use->set_proc_info(save_proc_info);
 
247
  free_tmp_table(in_use);
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}
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