diff options
Diffstat (limited to 'storage/ndb/src/old_files/client/odbc/codegen/Code_delete_lookup.cpp')
| -rw-r--r-- | storage/ndb/src/old_files/client/odbc/codegen/Code_delete_lookup.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/storage/ndb/src/old_files/client/odbc/codegen/Code_delete_lookup.cpp b/storage/ndb/src/old_files/client/odbc/codegen/Code_delete_lookup.cpp new file mode 100644 index 00000000000..4a6dec64654 --- /dev/null +++ b/storage/ndb/src/old_files/client/odbc/codegen/Code_delete_lookup.cpp @@ -0,0 +1,162 @@ +/* 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 <common/StmtArea.hpp> +#include <dictionary/DictTable.hpp> +#include "Code_expr.hpp" +#include "Code_delete_lookup.hpp" +#include "Code_table.hpp" +#include "Code_root.hpp" + +Plan_delete_lookup::~Plan_delete_lookup() +{ +} + +Plan_base* +Plan_delete_lookup::analyze(Ctx& ctx, Ctl& ctl) +{ + ctx_assert(m_query != 0); + m_query->analyze(ctx, ctl); + if (! ctx.ok()) + return 0; + ctx_assert(m_table != 0); + m_table->analyze(ctx, ctl); + if (! ctx.ok()) + return 0; + return this; +} + +void +Plan_delete_lookup::describe(Ctx& ctx) +{ + stmtArea().setFunction(ctx, "DELETE WHERE", SQL_DIAG_DELETE_WHERE); +} + +Exec_base* +Plan_delete_lookup::codegen(Ctx& ctx, Ctl& ctl) +{ + // create code for the query + ctx_assert(m_query != 0); + Exec_query* execQuery = static_cast<Exec_query*>(m_query->codegen(ctx, ctl)); + if (! ctx.ok()) + return 0; + ctx_assert(execQuery != 0); + // set up + ctx_assert(m_table != 0); + const BaseString& tableName = m_table->getName(); + const DictTable& dictTable = m_table->dictTable(); + const unsigned keyCount = dictTable.keyCount(); + // create the code + Exec_delete_lookup::Code& code = *new Exec_delete_lookup::Code(keyCount); + code.m_tableName = strcpy(new char[tableName.length() + 1], tableName.c_str()); + // key attributes + code.m_keyId = new NdbAttrId[1 + keyCount]; + code.m_keyId[0] = (NdbAttrId)-1; + for (unsigned k = 1; k <= keyCount; k++) { + const DictColumn* keyColumn = dictTable.getKey(k); + const SqlType& sqlType = keyColumn->sqlType(); + SqlSpec sqlSpec(sqlType, SqlSpec::Physical); + code.m_keySpecs.setEntry(k, sqlSpec); + code.m_keyId[k] = keyColumn->getAttrId(); + } + // matching expressions + const Plan_table::Index& index = m_table->m_indexList[0]; + ctx_assert(index.m_keyFound); + const ExprVector& keyEq = index.m_keyEq; + ctx_assert(keyEq.size() == 1 + keyCount); + code.m_keyMatch = new Exec_expr* [1 + keyCount]; + code.m_keyMatch[0] = 0; + for (unsigned k = 1; k <= keyCount; k++) { + Plan_expr* expr = keyEq[k]; + Exec_expr* execExpr = static_cast<Exec_expr*>(expr->codegen(ctx, ctl)); + if (! ctx.ok()) + return 0; + ctx_assert(execExpr != 0); + code.m_keyMatch[k] = execExpr; + } + // create the exec + Exec_delete_lookup* exec = new Exec_delete_lookup(ctl.m_execRoot); + ctl.m_execRoot->saveNode(exec); + exec->setCode(code); + exec->setQuery(execQuery); + return exec; +} + +void +Plan_delete_lookup::print(Ctx& ctx) +{ + ctx.print(" [delete_lookup"); + Plan_base* a[] = { m_query, m_table }; + printList(ctx, a, 2); + ctx.print("]"); +} + +// Exec_delete_lookup + +Exec_delete_lookup::Code::~Code() +{ + delete[] m_tableName; + delete[] m_keyId; + delete[] m_keyMatch; +} + +Exec_delete_lookup::Data::~Data() +{ +} + +Exec_delete_lookup::~Exec_delete_lookup() +{ +} + +void +Exec_delete_lookup::alloc(Ctx& ctx, Ctl& ctl) +{ + const Code& code = getCode(); + // allocate the subquery + ctx_assert(m_query != 0); + m_query->alloc(ctx, ctl); + if (! ctx.ok()) + return; + // allocate matching expressions + for (unsigned k = 1; k <= code.m_keyCount; k++) { + Exec_expr* expr = code.m_keyMatch[k]; + ctx_assert(expr != 0); + expr->alloc(ctx, ctl); + if (! ctx.ok()) + return; + } + // create data + Data& data = *new Data; + setData(data); +} + +void +Exec_delete_lookup::close(Ctx& ctx) +{ + ctx_assert(m_query != 0); + m_query->close(ctx); +} + +void +Exec_delete_lookup::print(Ctx& ctx) +{ + const Code& code = getCode(); + ctx.print(" [delete_lookup"); + Exec_base* a[] = { m_query }; + printList(ctx, a, 1); + printList(ctx, (Exec_base**)&code.m_keyMatch[1], code.m_keyCount); + ctx.print("]"); +} |