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Viewing changes to plugin/pbms/src/systab_enabled_ms.cc

  • Committer: Monty Taylor
  • Date: 2010-07-04 20:02:43 UTC
  • mfrom: (1548.2.40 drizzle_pbms)
  • mto: This revision was merged to the branch mainline in revision 1644.
  • Revision ID: mordred@inaugust.com-20100704200243-2vkq9gi6ysauj2tb
Merge PBMS from Barry.

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plugin/pbms/src/systab_enabled_ms.cc
 
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/* Copyright (c) 2009 PrimeBase Technologies GmbH, Germany
 
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 *
 
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 * PrimeBase Media Stream for MySQL
 
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 *
 
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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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 *
 
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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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 *
 
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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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 *
 
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 * Barry Leslie
 
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 *
 
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 * System dump table.
 
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 *
 
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 */
 
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#ifndef DRIZZLED
 
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#include "cslib/CSConfig.h"
 
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#include <sys/types.h>
 
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#include <sys/stat.h>
 
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#include <stdlib.h>
 
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#include <time.h>
 
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//#include "mysql_priv.h"
 
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#include "cslib/CSGlobal.h"
 
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#include "cslib/CSStrUtil.h"
 
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#include "ha_pbms.h"
 
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//#include <plugin.h>
 
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#include "mysql_ms.h"
 
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#include "repository_ms.h"
 
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#include "database_ms.h"
 
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#include "compactor_ms.h"
 
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#include "open_table_ms.h"
 
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#include "discover_ms.h"
 
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#include "transaction_ms.h"
 
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#include "systab_variable_ms.h"
 
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#include "backup_ms.h"
 
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#include "systab_enabled_ms.h"
 
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DT_FIELD_INFO pbms_enabled_info[]=
 
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{
 
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        {"Name",                        32,             NULL, MYSQL_TYPE_VARCHAR,       &UTF8_CHARSET,  NOT_NULL_FLAG,  "PBMS enabled engine name"},
 
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        {"IsServer",            3,              NULL, MYSQL_TYPE_VARCHAR,       &UTF8_CHARSET,                                  NOT_NULL_FLAG,  "Enabled at server level."},
 
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        {"Transactional",       5,              NULL, MYSQL_TYPE_VARCHAR,       &UTF8_CHARSET,                                  NOT_NULL_FLAG,  "Does the engine support transactions."},
 
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        {"API-Version",         NULL,   NULL, MYSQL_TYPE_LONG,          NULL,                                                   NOT_NULL_FLAG,  "The PBMS enabled api version used."},
 
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        {NULL,NULL, NULL, MYSQL_TYPE_STRING,NULL, 0, NULL}
 
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};
 
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DT_KEY_INFO pbms_enabled_keys[]=
 
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{
 
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        {"pbms_enabled_pk", PRI_KEY_FLAG, {"Name", NULL}},
 
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        {NULL, 0, {NULL}}
 
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};
 
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/*
 
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 * -------------------------------------------------------------------------
 
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 * DUMP TABLE
 
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 */
 
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//-----------------------
 
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MSEnabledTable::MSEnabledTable(MSSystemTableShare *share, TABLE *table):
 
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MSOpenSystemTable(share, table),
 
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iEnabledIndex(0)
 
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{
 
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}
 
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//-----------------------
 
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MSEnabledTable::~MSEnabledTable()
 
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{
 
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}
 
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//-----------------------
 
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void MSEnabledTable::seqScanInit()
 
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{
 
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        iEnabledIndex = 0;
 
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}
 
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//-----------------------
 
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bool MSEnabledTable::seqScanNext(char *buf)
 
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{
 
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        TABLE           *table = mySQLTable;
 
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        Field           *curr_field;
 
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        byte            *save;
 
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        MY_BITMAP       *save_write_set;
 
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        const char *yesno;
 
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        const PBMSEngineRec *eng;
 
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        enter_();
 
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        eng = MSEngine::getEngineInfoAt(iEnabledIndex++);
 
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        if (!eng)
 
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                return_(false);
 
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        save_write_set = table->write_set;
 
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        table->write_set = NULL;
 
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        memset(buf, 0xFF, table->s->null_bytes);
 
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        for (Field **field=GET_TABLE_FIELDS(table) ; *field ; field++) {
 
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                curr_field = *field;
 
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                save = curr_field->ptr;
 
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#if MYSQL_VERSION_ID < 50114
 
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                curr_field->ptr = (byte *) buf + curr_field->offset();
 
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#else
 
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                curr_field->ptr = (byte *) buf + curr_field->offset(curr_field->table->record[0]);
 
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#endif
 
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                switch (curr_field->field_name[0]) {
 
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                        case 'N':
 
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                                ASSERT(strcmp(curr_field->field_name, "Name") == 0);
 
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                                curr_field->store(eng->ms_engine_name, strlen(eng->ms_engine_name), &UTF8_CHARSET);
 
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                                setNotNullInRecord(curr_field, buf);
 
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                                break;
 
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                        case 'I':
 
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                                ASSERT(strcmp(curr_field->field_name, "IsServer") == 0);
 
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                                if (eng->ms_internal)
 
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                                        yesno = "Yes";
 
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                                else
 
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                                        yesno = "No";
 
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                                curr_field->store(yesno, strlen(yesno), &UTF8_CHARSET);
 
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                                setNotNullInRecord(curr_field, buf);
 
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                                break;
 
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                        case 'T': 
 
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                                ASSERT(strcmp(curr_field->field_name, "Transactional") == 0);
 
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                                if (eng->ms_internal || eng->ms_version < 2 )
 
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                                        yesno = "Maybe";
 
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                                else if (eng->ms_has_transactions)
 
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                                        yesno = "Yes";
 
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                                else
 
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                                        yesno = "No";
 
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                                curr_field->store(yesno, strlen(yesno), &UTF8_CHARSET);
 
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                                setNotNullInRecord(curr_field, buf);
 
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                                break;
 
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                        case 'A':
 
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                                ASSERT(strcmp(curr_field->field_name, "API-Version") == 0);
 
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                                curr_field->store(eng->ms_version, true);
 
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                                break;
 
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                }
 
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                curr_field->ptr = save;
 
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        }
 
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        table->write_set = save_write_set;
 
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        return_(true);
 
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}
 
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//-----------------------
 
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void MSEnabledTable::seqScanPos(uint8_t *pos)
 
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{
 
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        int32_t index = iEnabledIndex -1;
 
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        if (index < 0)
 
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                index = 0; // This is probably an error condition.
 
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        mi_int4store(pos, index);
 
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}
 
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//-----------------------
 
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void MSEnabledTable::seqScanRead(uint8_t *pos, char *buf)
 
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{
 
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        iEnabledIndex = mi_uint4korr(pos);
 
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        seqScanNext(buf);
 
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}
 
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#endif // DRIZZLED
 
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