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Viewing changes to drizzled/join_cache.h

  • Committer: Brian Aker
  • Date: 2010-10-24 01:34:39 UTC
  • mto: This revision was merged to the branch mainline in revision 1875.
  • Revision ID: brian@tangent.org-20101024013439-w9r8qtmt5ihnqtkd
Encapsulate table_name from table_list.

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Lines of Context:
drizzled/join_cache.h
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  CacheField and JoinCache is used on full join to cache records in outer
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  table
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*/
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class CacheField {
 
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struct CacheField {
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  /*
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    Where source data is located (i.e. this points to somewhere in
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    tableX->getInsertRecord())
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  */
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public:
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  unsigned char *str;
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  uint32_t length; /* Length of data at *str, in bytes */
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  uint32_t blob_length; /* Valid IFF blob_field != 0 */
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  Field_blob *blob_field;
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  bool strip; /* true <=> Strip endspaces ?? */
 
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  Table *get_rowid; /* _ != NULL <=> */
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  CacheField():
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    str(NULL),
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    length(0),
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    blob_length(0),
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    blob_field(NULL),
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    strip(false),
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    get_rowid(NULL)
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  {}
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};
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class JoinCache
 
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struct JoinCache
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{
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public:
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  unsigned char *buff;
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  unsigned char *pos;    /* Start of free space in the buffer */
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  unsigned char *end;
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  CacheField **blob_ptr;
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  optimizer::SqlSelect *select;
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  JoinCache():
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    buff(NULL),
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    pos(NULL),
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    end(NULL),
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    records(0),
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    record_nr(0),
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    ptr_record(0),
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    fields(0),
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    length(0),
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    blobs(0),
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    field(NULL),
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    blob_ptr(NULL),
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    select(NULL)
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  {}
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  void reset_cache_read();
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  void reset_cache_write();
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  bool store_record_in_cache();