mirror of
https://github.com/FirebirdSQL/firebird.git
synced 2025-01-31 09:23:03 +01:00
11495a55fb
Fixed the layering for WITH LOCK and (partially) ANY/ALL predicates. Cleaned up the outdated code that never worked (mapping DISTINCT to an index, some VMS remainings). Wiped out a lot of the pre-ODS11 optimizer logic. Some minor adjustments there. Re-implemented the full outer join from scratch. This resolves CORE-2678 (full outer join cannot use available indices). Resolved CORE-2796: DB_KEY is always zero for external tables. Implemented the core part of the scrollable PSQL cursors. Implementation is still incomplete, but ready for testing. Some other changes I don't recall at the moment ;-) WARNING! The engine may be unstable. Please email me about any issues found.
76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/*
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* The contents of this file are subject to the Initial
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* Developer's Public License Version 1.0 (the "License");
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* you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
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*
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* Software distributed under the License is distributed AS IS,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied.
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* See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Original Code was created by Dmitry Yemanov
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* for the Firebird Open Source RDBMS project.
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*
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* Copyright (c) 2006 Dmitry Yemanov <dimitr@users.sf.net>
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* and all contributors signed below.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*/
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#include "firebird.h"
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#include "../jrd/gdsassert.h"
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#include "../jrd/jrd.h"
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#include "../jrd/req.h"
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#include "../jrd/RecordBuffer.h"
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const char* const SCRATCH = "fb_recbuf_";
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using namespace Jrd;
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RecordBuffer::RecordBuffer(MemoryPool& pool, const Format* format)
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: length(format->fmt_length), count(0), filled(false)
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{
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space = FB_NEW(pool) TempSpace(pool, SCRATCH);
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record = FB_NEW_RPT(pool, length) Record(pool);
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record->rec_format = format;
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record->rec_length = (USHORT) length;
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}
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RecordBuffer::~RecordBuffer()
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{
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delete record;
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delete space;
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}
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offset_t RecordBuffer::store(const Record* new_record)
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{
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fb_assert(new_record->rec_length == length);
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fb_assert(!filled);
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space->write(count * length, new_record->rec_data, length);
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return count++;
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}
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bool RecordBuffer::fetch(offset_t position, Record* to_record)
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{
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fb_assert(to_record->rec_length == length);
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filled = true;
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if (position >= count)
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{
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return false;
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}
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space->read(position * length, to_record->rec_data, length);
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return true;
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}
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