diff options
Diffstat (limited to 'storage/ndb/src/old_files/client/odbc/codegen/Code_query_scan.cpp')
| -rw-r--r-- | storage/ndb/src/old_files/client/odbc/codegen/Code_query_scan.cpp | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/storage/ndb/src/old_files/client/odbc/codegen/Code_query_scan.cpp b/storage/ndb/src/old_files/client/odbc/codegen/Code_query_scan.cpp new file mode 100644 index 00000000000..1c0f58980e5 --- /dev/null +++ b/storage/ndb/src/old_files/client/odbc/codegen/Code_query_scan.cpp @@ -0,0 +1,177 @@ +/* Copyright (C) 2003 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#include <NdbApi.hpp> +#include <common/StmtArea.hpp> +#include <dictionary/DictTable.hpp> +#include <dictionary/DictColumn.hpp> +#include "Code_query_scan.hpp" +#include "Code_column.hpp" +#include "Code_root.hpp" + +// Plan_query_scan + +Plan_query_scan::~Plan_query_scan() +{ +} + +Plan_base* +Plan_query_scan::analyze(Ctx& ctx, Ctl& ctl) +{ + ctx_assert(m_table != 0); + m_table->analyze(ctx, ctl); + if (! ctx.ok()) + return 0; + if (m_interp != 0) { + m_interp = static_cast<Plan_pred*>(m_interp->analyze(ctx, ctl)); + if (! ctx.ok()) + return 0; + ctx_assert(m_interp != 0); + } + return this; +} + +Exec_base* +Plan_query_scan::codegen(Ctx& ctx, Ctl& ctl) +{ + // set up + ctx_assert(m_table != 0); + const BaseString& tableName = m_table->getName(); + const DictTable& dictTable = m_table->dictTable(); + const ColumnVector& columns = m_table->exprColumns(); + ctx_assert(columns.size() > 0); + const unsigned attrCount = columns.size() - 1; + // create the code + Exec_query_scan::Code& code = *new Exec_query_scan::Code(attrCount); + code.m_tableName = strcpy(new char[tableName.length() + 1], tableName.c_str()); + code.m_exclusive = m_exclusive; + // queried attributes + code.m_attrId = new NdbAttrId[1 + attrCount]; + code.m_attrId[0] = (NdbAttrId)-1; + for (unsigned i = 1; i <= attrCount; i++) { + Plan_column* column = columns[i]; + ctx_assert(column != 0); + const DictColumn& dictColumn = column->dictColumn(); + const SqlType& sqlType = dictColumn.sqlType(); + SqlSpec sqlSpec(sqlType, SqlSpec::Physical); + code.m_sqlSpecs.setEntry(i, sqlSpec); + code.m_attrId[i] = dictColumn.getAttrId(); + } + // create the exec + Exec_query_scan* exec = new Exec_query_scan(ctl.m_execRoot); + ctl.m_execRoot->saveNode(exec); + exec->setCode(code); + // interpreter + Exec_pred* execInterp = 0; + ctl.m_execQuery = exec; + ctl.m_topTable = m_table; + if (m_interp != 0) { + execInterp = static_cast<Exec_pred*>(m_interp->codegen(ctx, ctl)); + if (! ctx.ok()) + return 0; + ctx_assert(execInterp != 0); + } + ctl.m_topTable = 0; + if (m_interp != 0) + exec->setInterp(execInterp); + return exec; +} + +void +Plan_query_scan::print(Ctx& ctx) +{ + ctx.print(" [query_scan"); + Plan_base* a[] = { m_table, m_interp }; + printList(ctx, a, 2); + ctx.print("]"); +} + +// Exec_query_scan + +Exec_query_scan::Code::~Code() +{ + delete[] m_tableName; + delete[] m_attrId; +} + +Exec_query_scan::Data::~Data() +{ + delete[] m_recAttr; +} + +Exec_query_scan::~Exec_query_scan() +{ +} + +void +Exec_query_scan::alloc(Ctx& ctx, Ctl& ctl) +{ + const Code& code = getCode(); + // create data + Data& data = *new Data(this, code.sqlSpecs()); + // needed for isNULL + data.m_recAttr = new NdbRecAttr* [1 + code.m_attrCount]; + for (unsigned i = 0; i <= code.m_attrCount; i++) { + data.m_recAttr[i] = 0; + } + data.m_parallel = code.m_exclusive ? 1 : 240; // best supported + setData(data); + // interpreter + ctl.m_query = this; + if (m_interp != 0) { + //m_interp->alloc(ctx, ctl); XXX + if (! ctx.ok()) + return; + } +} + +void +Exec_query_scan::close(Ctx& ctx) +{ + Data& data = getData(); + if (data.m_con != 0) { + Ndb* const ndb = ndbObject(); + int ret = data.m_con->stopScan(); + if (ret == -1) { + ctx.pushStatus(ndb, data.m_con, data.m_op, "stopScan"); + } + ndb->closeTransaction(data.m_con); + data.m_con = 0; + data.m_op = 0; + ctx_log2(("scan closed at statement close")); + } + if (m_interp != 0) + m_interp->close(ctx); +} + +void +Exec_query_scan::print(Ctx& ctx) +{ + ctx.print(" [query_scan"); + if (m_code != 0) { + const Code& code = getCode(); + ctx.print(" attrId="); + for (unsigned i = 1; i <= code.m_attrCount; i++) { + if (i > 1) + ctx.print(","); + ctx.print("%u", (unsigned)code.m_attrId[i]); + } + ctx.print(" table=%s", code.m_tableName); + } + if (m_interp != 0) + m_interp->print(ctx); + ctx.print("]"); +} |