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Code_create_index.cpp
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:3k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* 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 "Code_create_index.hpp"
- #include "Code_root.hpp"
- // Plan_create_index
- Plan_create_index::~Plan_create_index()
- {
- }
- Plan_base*
- Plan_create_index::analyze(Ctx& ctx, Ctl& ctl)
- {
- stmtArea().stmtInfo().setName(Stmt_name_create_index);
- // analyze the table
- ctx_assert(m_table != 0);
- m_table->analyze(ctx, ctl);
- if (! ctx.ok())
- return 0;
- // analyze the columns
- ctl.m_tableList.resize(1 + 1); // indexed from 1
- ctl.m_tableList[1] = m_table;
- for (unsigned i = 1, n = countColumn(); i <= n; i++) {
- Plan_idx_column* column = getColumn(i);
- column->analyze(ctx, ctl);
- if (! ctx.ok())
- return 0;
- }
- return this;
- }
- void
- Plan_create_index::describe(Ctx& ctx)
- {
- stmtArea().setFunction(ctx, "CREATE INDEX", SQL_DIAG_CREATE_INDEX);
- }
- Exec_base*
- Plan_create_index::codegen(Ctx& ctx, Ctl& ctl)
- {
- Exec_create_index* exec = new Exec_create_index(ctl.m_execRoot);
- ctl.m_execRoot->saveNode(exec);
- const unsigned count = countColumn();
- const char** attrList = new const char* [1 + count];
- attrList[0] = 0; // unused
- for (unsigned i = 1; i <= count; i++) {
- Plan_idx_column* column = getColumn(i);
- const char* cname = column->getName().c_str();
- attrList[i] = strcpy(new char[strlen(cname) + 1], cname);
- }
- Exec_create_index::Code& code = *new Exec_create_index::Code(m_name, m_table->getName(), m_type, count, attrList);
- exec->setCode(code);
- code.m_fragmentType = m_fragmentType;
- code.m_logging = m_logging;
- return exec;
- }
- void
- Plan_create_index::print(Ctx& ctx)
- {
- ctx.print(" [create_index name=%s table=%s type=%d", m_name.c_str(), m_table->getName().c_str(), (int)m_type);
- ctx.print(" [");
- for (unsigned i = 1; i <= countColumn(); i++) {
- Plan_idx_column* column = getColumn(i);
- if (i > 1)
- ctx.print(" ");
- column->print(ctx);
- }
- ctx.print("]");
- }
- // Exec_create_index
- Exec_create_index::Code::~Code()
- {
- for (unsigned i = 1; i <= m_attrCount; i++) {
- delete[] m_attrList[i];
- m_attrList[i] = 0;
- }
- delete[] m_attrList;
- }
- Exec_create_index::Data::~Data()
- {
- }
- Exec_create_index::~Exec_create_index()
- {
- }
- void
- Exec_create_index::alloc(Ctx& ctx, Ctl& ctl)
- {
- Data& data = *new Data;
- setData(data);
- }
- void
- Exec_create_index::close(Ctx& ctx)
- {
- }
- void
- Exec_create_index::print(Ctx& ctx)
- {
- const Code& code = getCode();
- ctx.print(" [create_index %s]", code.m_tableName.c_str());
- }