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Viewing changes to drizzled/field.cc

Added code necessary for building plugins dynamically.
Merged in changes from lifeless to allow autoreconf to work.
Touching plugin.ini files now triggers a rebuid - so config/autorun.sh is no
longer required to be run after touching those.
Removed the duplicate plugin names - also removed the issue that getting them
different would silently fail weirdly later.

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Lines of Context:
drizzled/field.cc
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static enum_field_types
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field_types_merge_rules [DRIZZLE_TYPE_MAX+1][DRIZZLE_TYPE_MAX+1]=
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{
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  /* DRIZZLE_TYPE_TINY -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_TINY,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_LONG,
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    //DRIZZLE_TYPE_DOUBLE
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    DRIZZLE_TYPE_DOUBLE,
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    //DRIZZLE_TYPE_NULL
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    DRIZZLE_TYPE_TINY,
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    //DRIZZLE_TYPE_TIMESTAMP
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_LONGLONG
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    DRIZZLE_TYPE_LONGLONG,
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    //DRIZZLE_TYPE_DATETIME
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_DATE
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_VARCHAR
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_NEWDECIMAL
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    DRIZZLE_TYPE_NEWDECIMAL,
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    //DRIZZLE_TYPE_ENUM
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_BLOB
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    DRIZZLE_TYPE_BLOB,
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  },
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  /* DRIZZLE_TYPE_LONG -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_LONG,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_LONG,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_DOUBLE -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_DOUBLE,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_DOUBLE,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_NULL -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_TINY,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_LONG,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_TIMESTAMP -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_LONGLONG -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_LONGLONG,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_LONGLONG,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_DATETIME -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_DATE -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_VARCHAR -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_NEWDECIMAL -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_NEWDECIMAL,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_NEWDECIMAL,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_ENUM -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_VARCHAR,
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    //DRIZZLE_TYPE_DOUBLE
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  },
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  /* DRIZZLE_TYPE_BLOB -> */
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  {
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    //DRIZZLE_TYPE_TINY
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    DRIZZLE_TYPE_BLOB,
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    //DRIZZLE_TYPE_LONG
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    DRIZZLE_TYPE_BLOB,
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    //DRIZZLE_TYPE_DOUBLE
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static Item_result field_types_result_type [DRIZZLE_TYPE_MAX+1]=
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{
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  //DRIZZLE_TYPE_TINY
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  INT_RESULT,
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  //DRIZZLE_TYPE_LONG
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  INT_RESULT,
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  //DRIZZLE_TYPE_DOUBLE
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{
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  switch (type) {
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  case DRIZZLE_TYPE_VARCHAR: return (length + (length < 256 ? 1: 2));
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  case DRIZZLE_TYPE_TINY: return 1;
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  case DRIZZLE_TYPE_DATE: return 3;
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  case DRIZZLE_TYPE_TIMESTAMP:
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  case DRIZZLE_TYPE_LONG: return 4;
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                                   decimals,
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                                   false,
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                                   false /* is_unsigned */);
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  case DRIZZLE_TYPE_TINY:
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    assert(0);
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  case DRIZZLE_TYPE_LONG:
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    return new (root) Field_long(ptr,
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                                 field_length,