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On IBM i 5.4, schemas with names that are longer than 8 characters and contain digits or an underscore cannot contain IBMDB2I tables, even though this should theoritically be possible if all alpha characters are uppercase. THe current patch fixes the IBMDB2I engine to allow digits and the underscore(_) to be used in schema names longer than 8 characters on IBM i 5.4. storage/ibmdb2i/db2i_misc.h: The function which detected whether the operating system would treat a schema as an "ordinary identifier" (allowing 10 characters in the name instead of 8) did not cover all possible cases.Function was renamed and enhanced to detect all possible cases of "ordinary identifiers". storage/ibmdb2i/ha_ibmdb2i.cc: use the renamed function to cover all possible cases of ordinary identifiers.
113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/*
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Licensed Materials - Property of IBM
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DB2 Storage Engine Enablement
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Copyright IBM Corporation 2007,2008
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All rights reserved
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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(a) Redistributions of source code must retain this list of conditions, the
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copyright notice in section {d} below, and the disclaimer following this
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list of conditions.
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(b) Redistributions in binary form must reproduce this list of conditions, the
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copyright notice in section (d) below, and the disclaimer following this
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list of conditions, in the documentation and/or other materials provided
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with the distribution.
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(c) The name of IBM may not be used to endorse or promote products derived from
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this software without specific prior written permission.
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(d) The text of the required copyright notice is:
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Licensed Materials - Property of IBM
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DB2 Storage Engine Enablement
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Copyright IBM Corporation 2007,2008
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All rights reserved
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THIS SOFTWARE IS PROVIDED BY IBM CORPORATION "AS IS" AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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SHALL IBM CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#ifndef DB2I_MISC_H
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#define DB2I_MISC_H
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/**
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Undelimit quote-delimited DB2 names in-place
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*/
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void stripExtraQuotes(char* name, uint maxLen)
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{
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char* oldName = (char*)sql_strdup(name);
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uint i = 0;
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uint j = 0;
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do
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{
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name[j] = oldName[i];
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if (oldName[i] == '"' && oldName[i+1] == '"')
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++i;
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} while (++j < maxLen && oldName[++i]);
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if (j == maxLen)
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--j;
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name[j] = 0;
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}
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/**
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Convert a MySQL identifier name into a DB2 compatible format
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@parm input The MySQL name
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@parm output The DB2 name
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@parm outlen The amount of space allocated for output
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@parm delimit Should delimiting quotes be placed around the converted name?
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@parm delimitQuotes Should quotes in the MySQL be delimited with additional quotes?
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@return FALSE if output was too small and name was truncated; TRUE otherwise
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*/
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bool convertMySQLNameToDB2Name(const char* input,
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char* output,
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size_t outlen,
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bool delimit = true,
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bool delimitQuotes = true)
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{
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uint o = 0;
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if (delimit)
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output[o++] = '"';
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uint i = 0;
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do
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{
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output[o] = input[i];
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if (delimitQuotes && input[i] == '"')
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output[++o] = '"';
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} while (++o < outlen-2 && input[++i]);
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if (delimit)
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output[o++] = '"';
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output[min(o, outlen-1)] = 0; // This isn't the most user-friendly way to handle overflows,
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// but at least its safe.
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return (o <= outlen-1);
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}
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bool isOrdinaryIdentifier(const char* s)
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{
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while (*s)
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{
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if (my_isupper(system_charset_info, *s) ||
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my_isdigit(system_charset_info, *s) ||
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(*s == '_') ||
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(*s == '@') ||
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(*s == '$') ||
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(*s == '#') ||
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(*s == '"'))
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++s;
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else
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return false;
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}
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return true;
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}
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#endif
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