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  • Committer: Monty Taylor
  • Date: 2009-04-14 19:16:51 UTC
  • mto: (997.2.5 mordred)
  • mto: This revision was merged to the branch mainline in revision 994.
  • Revision ID: mordred@inaugust.com-20090414191651-ltbww6hpqks8k7qk
Clarified instructions in README.

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drizzled/field/enum.cc
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 */
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#include "config.h"
 
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#include "drizzled/server_includes.h"
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#include "drizzled/field/enum.h"
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#include "drizzled/error.h"
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#include "drizzled/table.h"
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#include "drizzled/session.h"
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#include "drizzled/strfunc.h"
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#include <sstream>
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#include <string>
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namespace drizzled
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{
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/****************************************************************************
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** enum type.
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** This is a string which only can have a selection of different values.
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{
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  uint32_t tmp;
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  ASSERT_COLUMN_MARKED_FOR_WRITE;
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  /* Remove end space */
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  length= field_charset->cset->lengthsp(field_charset, from, length);
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  tmp= find_type2(typelib, from, length, field_charset);
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 */
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int Field_enum::store(int64_t from, bool)
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{
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  ASSERT_COLUMN_MARKED_FOR_WRITE;
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  if (from <= 0 || (uint64_t) from > typelib->count)
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  {
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    /* Convert the integer to a string using stringstream */
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int64_t Field_enum::val_int(void)
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{
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  ASSERT_COLUMN_MARKED_FOR_READ;
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  switch (packlength) {
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  case 1:
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    return (int64_t) ptr[0];
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  return 0;                                     // impossible
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}
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/**
 
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   Save the field metadata for enum fields.
 
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   Saves the real type in the first byte and the pack length in the
 
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   second byte of the field metadata array at index of *metadata_ptr and
 
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   *(metadata_ptr + 1).
 
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   @param   metadata_ptr   First byte of field metadata
 
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   @returns number of bytes written to metadata_ptr
 
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*/
 
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int Field_enum::do_save_field_metadata(unsigned char *metadata_ptr)
 
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{
 
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  *metadata_ptr= real_type();
 
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  *(metadata_ptr + 1)= pack_length();
 
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  return 2;
 
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}
 
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String *Field_enum::val_str(String *, String *val_ptr)
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{
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  uint32_t tmp=(uint32_t) Field_enum::val_int();
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  ASSERT_COLUMN_MARKED_FOR_READ;
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  if (!tmp || tmp > typelib->count)
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    val_ptr->set("", 0, field_charset);
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  else
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  res.append(')');
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}
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Field *Field_enum::new_field(memory::Root *root, Table *new_table,
 
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Field *Field_enum::new_field(MEM_ROOT *root, Table *new_table,
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                             bool keep_type)
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{
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  Field_enum *res= (Field_enum*) Field::new_field(root, new_table, keep_type);
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    res->typelib= copy_typelib(root, typelib);
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  return res;
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}
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} /* namespace drizzled */