Code_insert.cpp
上传用户:romrleung
上传日期:2022-05-23
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文件大小:7k
- /* 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 <dictionary/DictColumn.hpp>
- #include "Code_insert.hpp"
- #include "Code_query_repeat.hpp"
- #include "Code_query_project.hpp"
- #include "Code_table.hpp"
- #include "Code_root.hpp"
- // Plan_insert
- Plan_insert::~Plan_insert()
- {
- }
- Plan_base*
- Plan_insert::analyze(Ctx& ctx, Ctl& ctl)
- {
- stmtArea().stmtInfo().setName(Stmt_name_insert);
- ctx_assert(m_table != 0);
- m_table->analyze(ctx, ctl);
- if (! ctx.ok())
- return 0;
- // handle MySql syntax
- if (m_mysqlRow != 0) {
- setDmlRow(m_mysqlRow->m_dmlRow);
- setExprRow(m_mysqlRow->m_exprRow);
- m_mysqlRow = 0;
- }
- if (m_dmlRow == 0) {
- // construct column list
- setDmlRow(new Plan_dml_row(m_root));
- m_root->saveNode(m_dmlRow);
- const DictTable& dictTable = m_table->dictTable();
- unsigned n = dictTable.getSize();
- for (unsigned i = 1; i <= n; i++) {
- DictColumn* dictColumn = dictTable.getColumn(i);
- Plan_dml_column* column = new Plan_dml_column(m_root, dictColumn->getName());
- m_root->saveNode(column);
- m_dmlRow->addColumn(column);
- }
- }
- // set name resolution scope
- ctl.m_tableList.resize(1 + 1); // indexed from 1
- ctl.m_tableList[1] = m_table;
- // analyze the dml columns
- m_dmlRow->analyze(ctx, ctl);
- if (! ctx.ok())
- return 0;
- ctl.m_dmlRow = m_dmlRow; // row type to convert to
- if (m_query != 0) {
- m_query->analyze(ctx, ctl);
- if (! ctx.ok())
- return 0;
- } else if (m_select == 0) {
- // analyze the expression row
- m_exprRow->analyze(ctx, ctl);
- if (! ctx.ok())
- return 0;
- // transform the row into query
- Plan_query_repeat* queryRepeat = new Plan_query_repeat(m_root, 1);
- m_root->saveNode(queryRepeat);
- Plan_query_project* queryProject = new Plan_query_project(m_root);
- m_root->saveNode(queryProject);
- queryProject->setQuery(queryRepeat);
- queryProject->setRow(m_exprRow);
- setQuery(queryProject);
- } else {
- // analyze the select into query
- Plan_query* query = static_cast<Plan_query*>(m_select->analyze(ctx, ctl));
- if (! ctx.ok())
- return 0;
- setQuery(query);
- }
- return this;
- }
- void
- Plan_insert::describe(Ctx& ctx)
- {
- stmtArea().setFunction(ctx, "INSERT", SQL_DIAG_INSERT);
- }
- Exec_base*
- Plan_insert::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 ColumnVector& columns = m_table->dmlColumns();
- ctx_assert(columns.size() > 0);
- const unsigned attrCount = columns.size() - 1;
- // create the code
- Exec_insert::Code& code = *new Exec_insert::Code();
- code.m_insertOp = m_insertOp;
- code.m_tableName = strcpy(new char[tableName.length() + 1], tableName.c_str());
- code.m_attrCount = attrCount;
- code.m_attrId = new NdbAttrId[1 + attrCount];
- code.m_isKey = new bool[1 + attrCount];
- code.m_attrId[0] = (NdbAttrId)-1;
- code.m_tupleId = dictTable.tupleId(); // maybe 0
- code.m_autoIncrement = dictTable.autoIncrement(); // maybe 0
- unsigned k;
- if ((k = code.m_tupleId) != 0 || (k = code.m_autoIncrement) != 0) {
- const DictColumn& dictColumn = *dictTable.getColumn(k);
- code.m_idType = dictColumn.sqlType();
- }
- for (unsigned i = 1; i <= attrCount; i++) {
- Plan_column* column = columns[i];
- ctx_assert(column != 0);
- const DictColumn& dictColumn = column->dictColumn();
- code.m_attrId[i] = dictColumn.getAttrId();
- code.m_isKey[i] = dictColumn.isKey();
- }
- // default values XXX a mess
- code.m_defaultCount = 0;
- for (unsigned j = 1; j <= dictTable.getSize(); j++) {
- const DictColumn& dictColumn = *dictTable.getColumn(j);
- if (dictColumn.getDefaultValue() != 0 && ! code.findAttrId(dictColumn.getAttrId()))
- code.m_defaultCount++;
- }
- if (code.m_defaultCount != 0) {
- code.m_defaultId = new NdbAttrId[1 + code.m_defaultCount];
- for (unsigned i = 0, j = 1; j <= dictTable.getSize(); j++) {
- const DictColumn& dictColumn = *dictTable.getColumn(j);
- if (dictColumn.getDefaultValue() != 0 && ! code.findAttrId(dictColumn.getAttrId()))
- code.m_defaultId[++i] = dictColumn.getAttrId();
- }
- SqlSpecs sqlSpecs(code.m_defaultCount);
- for (unsigned i = 0, j = 1; j <= dictTable.getSize(); j++) {
- const DictColumn& dictColumn = *dictTable.getColumn(j);
- if (dictColumn.getDefaultValue() != 0 && ! code.findAttrId(dictColumn.getAttrId())) {
- SqlSpec sqlSpec(dictColumn.sqlType(), SqlSpec::Physical);
- sqlSpecs.setEntry(++i, sqlSpec);
- }
- }
- code.m_defaultValue = new SqlRow(sqlSpecs);
- for (unsigned i = 0, j = 1; j <= dictTable.getSize(); j++) {
- const DictColumn& dictColumn = *dictTable.getColumn(j);
- if (dictColumn.getDefaultValue() != 0 && ! code.findAttrId(dictColumn.getAttrId())) {
- const char* defaultValue = dictColumn.getDefaultValue();
- ExtType extType(ExtType::Char);
- ExtSpec extSpec(extType);
- SQLINTEGER ind = SQL_NTS;
- ExtField extField(extSpec, (SQLPOINTER)defaultValue, 0, &ind);
- SqlField& f = code.m_defaultValue->getEntry(++i);
- f.copyin(ctx, extField);
- if (! ctx.ok())
- return 0;
- }
- }
- }
- // create the exec
- Exec_insert* exec = new Exec_insert(ctl.m_execRoot);
- ctl.m_execRoot->saveNode(exec);
- exec->setCode(code);
- exec->setQuery(execQuery);
- return exec;
- }
- void
- Plan_insert::print(Ctx& ctx)
- {
- ctx.print(" [%s", m_insertOp == Insert_op_insert ? "insert" : "write");
- Plan_base* a[] = { m_table, m_dmlRow, m_exprRow, m_query };
- printList(ctx, a, 4);
- ctx.print("]");
- }
- // Exec_insert
- Exec_insert::Code::~Code()
- {
- delete[] m_tableName;
- delete[] m_attrId;
- delete[] m_isKey;
- delete[] m_defaultId;
- delete m_defaultValue;
- }
- bool
- Exec_insert::Code::findAttrId(NdbAttrId attrId) const
- {
- for (unsigned i = 1; i <= m_attrCount; i++) {
- if (m_attrId[i] == attrId)
- return true;
- }
- return false;
- }
- Exec_insert::Data::~Data()
- {
- }
- Exec_insert::~Exec_insert()
- {
- }
- void
- Exec_insert::alloc(Ctx& ctx, Ctl& ctl)
- {
- // allocate the query
- ctx_assert(m_query != 0);
- m_query->alloc(ctx, ctl);
- // create data
- Data& data = *new Data();
- setData(data);
- }
- void
- Exec_insert::close(Ctx& ctx)
- {
- }
- void
- Exec_insert::print(Ctx& ctx)
- {
- const Code& code = getCode();
- ctx_assert(m_query != 0);
- ctx.print(" [insert");
- 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);
- m_query->print(ctx);
- ctx.print("]");
- }