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3936ce19d2
Incorporating changes from review. Fixing one bug that surfaced. mysql-test/extra/rpl_tests/rpl_row_tabledefs.test: Adding tests that UPDATE and DELETE does not generate an error. mysql-test/r/rpl_row_tabledefs_2myisam.result: Result change. mysql-test/r/rpl_row_tabledefs_3innodb.result: Result change. mysql-test/t/disabled.def: Enabling rpl_sp_effects (even though it gives a result mismatch currently). sql/field.cc: Using constant to denote undefined last null byte. sql/field.h: Using constant to denote undefined last null byte. Adding documentation. sql/log_event.cc: Not generating error for non-NULL no-DEFAULT columns when updating or deleting row. Better documentation and comments. sql/rpl_utility.cc: Moving documentation to header file. sql/rpl_utility.h: Documenting class and members.
126 lines
3.3 KiB
C++
126 lines
3.3 KiB
C++
/* Copyright 2006 MySQL AB. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef RPL_UTILITY_H
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#define RPL_UTILITY_H
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#ifndef __cplusplus
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#error "Don't include this C++ header file from a non-C++ file!"
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#endif
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#include "mysql_priv.h"
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uint32
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field_length_from_packed(enum_field_types const field_type,
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byte const *const data);
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/*
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A table definition from the master.
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RESPONSIBILITIES
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- Extract and decode table definition data from the table map event
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- Check if table definition in table map is compatible with table
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definition on slave
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DESCRIPTION
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Currently, the only field type data available is an array of the
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type operators that are present in the table map event.
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TODO
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Add type operands to this structure to allow detection of
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difference between, e.g., BIT(5) and BIT(10).
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*/
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class table_def
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{
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public:
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/*
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Convenience declaration of the type of the field type data in a
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table map event.
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*/
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typedef unsigned char field_type;
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/*
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Constructor.
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SYNOPSIS
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table_def()
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types Array of types
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size Number of elements in array 'types'
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*/
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table_def(field_type *types, my_size_t size)
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: m_type(types), m_size(size)
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{
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}
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/*
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Return the number of fields there is type data for.
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SYNOPSIS
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size()
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RETURN VALUE
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The number of fields that there is type data for.
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*/
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my_size_t size() const { return m_size; }
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/*
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Return a representation of the type data for one field.
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SYNOPSIS
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type()
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i Field index to return data for
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RETURN VALUE
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Will return a representation of the type data for field
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'i'. Currently, only the type identifier is returned.
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*/
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field_type type(my_ptrdiff_t i) const { return m_type[i]; }
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/*
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Decide if the table definition is compatible with a table.
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SYNOPSIS
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compatible_with()
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rli Pointer to relay log info
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table Pointer to table to compare with.
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DESCRIPTION
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Compare the definition with a table to see if it is compatible
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with it. A table definition is compatible with a table if:
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- the columns types of the table definition is a (not
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necessarily proper) prefix of the column type of the table, or
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- the other way around
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RETURN VALUE
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1 if the table definition is not compatible with 'table'
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0 if the table definition is compatible with 'table'
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*/
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int compatible_with(RELAY_LOG_INFO *rli, TABLE *table) const;
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private:
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my_size_t m_size; // Number of elements in the types array
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field_type *m_type; // Array of type descriptors
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};
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#endif /* RPL_UTILITY_H */
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