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Viewing changes to plugin/myisam/mi_unique.cc

  • Committer: Olaf van der Spek
  • Date: 2011-07-05 13:16:34 UTC
  • mto: This revision was merged to the branch mainline in revision 2384.
  • Revision ID: olafvdspek@gmail.com-20110705131634-f7g1fjro5slibmdj
Add data_ref.h
Use str_ref for append_identifier

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plugin/myisam/mi_unique.cc
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/* Functions to check if a row is unique */
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#include "myisam_priv.h"
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#include "drizzled/charset_info.h"
 
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#include <drizzled/charset.h>
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using namespace drizzled;
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bool mi_check_unique(MI_INFO *info,
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                     MI_UNIQUEDEF *def,
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                     unsigned char *record,
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                     internal::ha_checksum unique_hash,
 
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                     ha_checksum unique_hash,
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                     internal::my_off_t disk_pos)
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{
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  internal::my_off_t lastpos=info->lastpos;
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    Add support for bit fields
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*/
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internal::ha_checksum mi_unique_hash(MI_UNIQUEDEF *def, const unsigned char *record)
 
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ha_checksum mi_unique_hash(MI_UNIQUEDEF *def, const unsigned char *record)
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{
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  const unsigned char *pos, *end;
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  internal::ha_checksum crc= 0;
 
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  ha_checksum crc= 0;
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  uint32_t seed1=0, seed2= 4;
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  HA_KEYSEG *keyseg;
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          done)
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        */
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        crc=((crc << 8) + 511+
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             (crc >> (8*sizeof(internal::ha_checksum)-8)));
 
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             (crc >> (8*sizeof(ha_checksum)-8)));
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        continue;
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      }
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    }
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      while (pos != end)
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        crc=((crc << 8) +
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             (((unsigned char)  *(unsigned char*) pos++))) +
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          (crc >> (8*sizeof(internal::ha_checksum)-8));
 
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          (crc >> (8*sizeof(ha_checksum)-8));
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  }
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  return crc;
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}