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/* 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 "Code_expr_param.hpp"
#include "Code_root.hpp"
// Plan_expr_param
Plan_expr_param::~Plan_expr_param()
{
}
Plan_base*
Plan_expr_param::analyze(Ctx& ctx, Ctl& ctl)
{
m_exec = 0;
ctx_assert(m_paramNumber != 0);
ctx_assert(m_paramNumber < m_root->m_paramList.size());
m_root->m_paramList[m_paramNumber] = this;
m_sqlType.setType(ctx, SqlType::Unbound);
// check if type is bound now
DescArea& ipd = descArea(Desc_usage_IPD);
if (m_paramNumber <= ipd.getCount()) {
DescRec& rec = ipd.getRecord(m_paramNumber);
OdbcData descData;
rec.getField(ctx, SQL_DESC_TYPE, descData);
if (descData.type() != OdbcData::Undef) {
SQLSMALLINT desc_TYPE = descData.smallint();
// XXX wrong but fixes sun.jdbc.odbc
if (desc_TYPE == SQL_CHAR)
desc_TYPE = SQL_VARCHAR;
if (desc_TYPE == SQL_CHAR) {
rec.getField(ctx, SQL_DESC_LENGTH, descData);
if (descData.type() != OdbcData::Undef) {
unsigned desc_LENGTH = descData.uinteger();
m_sqlType.setType(ctx, SqlType::Char, desc_LENGTH);
}
} else if (desc_TYPE == SQL_VARCHAR) {
rec.getField(ctx, SQL_DESC_LENGTH, descData);
if (descData.type() != OdbcData::Undef) {
unsigned desc_LENGTH = descData.uinteger();
m_sqlType.setType(ctx, SqlType::Varchar, desc_LENGTH);
}
} else if (desc_TYPE == SQL_BINARY) {
rec.getField(ctx, SQL_DESC_LENGTH, descData);
if (descData.type() != OdbcData::Undef) {
unsigned desc_LENGTH = descData.uinteger();
m_sqlType.setType(ctx, SqlType::Binary, desc_LENGTH);
}
} else if (desc_TYPE == SQL_VARBINARY) {
rec.getField(ctx, SQL_DESC_LENGTH, descData);
if (descData.type() != OdbcData::Undef) {
unsigned desc_LENGTH = descData.uinteger();
m_sqlType.setType(ctx, SqlType::Varbinary, desc_LENGTH);
} else {
// XXX BLOB hack
unsigned desc_LENGTH = FAKE_BLOB_SIZE;
m_sqlType.setType(ctx, SqlType::Varbinary, desc_LENGTH);
}
} else if (desc_TYPE == SQL_SMALLINT) {
m_sqlType.setType(ctx, SqlType::Smallint);
} else if (desc_TYPE == SQL_INTEGER) {
m_sqlType.setType(ctx, SqlType::Integer);
} else if (desc_TYPE == SQL_BIGINT) {
m_sqlType.setType(ctx, SqlType::Bigint);
} else if (desc_TYPE == SQL_REAL) {
m_sqlType.setType(ctx, SqlType::Real);
} else if (desc_TYPE == SQL_DOUBLE) {
m_sqlType.setType(ctx, SqlType::Double);
} else if (desc_TYPE == SQL_TYPE_TIMESTAMP) {
m_sqlType.setType(ctx, SqlType::Datetime);
// XXX BLOB hack
} else if (desc_TYPE == SQL_LONGVARBINARY) {
m_sqlType.setType(ctx, SqlType::Varbinary, (unsigned)FAKE_BLOB_SIZE);
} else {
ctx.pushStatus(Error::Gen, "parameter %u unsupported SQL type %d", m_paramNumber, (int)desc_TYPE);
return 0;
}
char buf[100];
m_sqlType.print(buf, sizeof(buf));
ctx_log2(("parameter %u SQL type bound to %s", m_paramNumber, buf));
}
}
return this;
}
void
Plan_expr_param::describe(Ctx& ctx)
{
DescArea& ipd = descArea(Desc_usage_IPD);
if (ipd.getCount() < m_paramNumber)
ipd.setCount(ctx, m_paramNumber);
// XXX describe if possible
DescRec& rec = ipd.getRecord(m_paramNumber);
}
Exec_base*
Plan_expr_param::codegen(Ctx& ctx, Ctl& ctl)
{
if (m_exec != 0)
return m_exec;
SqlSpec sqlSpec(m_sqlType, SqlSpec::Physical);
// create code
Exec_expr_param* exec = new Exec_expr_param(ctl.m_execRoot);
ctl.m_execRoot->saveNode(exec);
ctx_assert(m_paramNumber != 0);
Exec_expr_param::Code& code = *new Exec_expr_param::Code(sqlSpec, m_paramNumber);
exec->setCode(code);
m_exec = exec;
return exec;
}
void
Plan_expr_param::print(Ctx& ctx)
{
ctx.print(" [param %u]", m_paramNumber);
}
bool
Plan_expr_param::isEqual(const Plan_expr* expr) const
{
ctx_assert(expr != 0);
if (expr->type() != Plan_expr::TypeParam)
return false;
const Plan_expr_param* expr2 = static_cast<const Plan_expr_param*>(expr);
// params are not equal ever
return false;
}
bool
Plan_expr_param::isGroupBy(const Plan_expr_row* row) const
{
// params are constants
return true;
}
// Exec_expr_param
Exec_expr_param::Code::~Code()
{
}
Exec_expr_param::Data::~Data()
{
delete m_extField;
m_extField = 0;
}
Exec_expr_param::~Exec_expr_param()
{
}
void
Exec_expr_param::alloc(Ctx& ctx, Ctl& ctl)
{
if (m_data != 0)
return;
const Code& code = getCode();
SqlField sqlField(code.sqlSpec());
Data& data = *new Data(sqlField);
setData(data);
}
void
Exec_expr_param::bind(Ctx& ctx)
{
const Code& code = getCode();
Data& data = getData();
DescArea& apd = descArea(Desc_usage_APD);
if (apd.getCount() < code.m_paramNumber) {
ctx_log1(("parameter %u is not bound", code.m_paramNumber));
return;
}
const unsigned paramNumber = code.m_paramNumber;
DescRec& rec = apd.getRecord(paramNumber);
OdbcData descData;
// create type
rec.getField(ctx, SQL_DESC_TYPE, descData);
if (descData.type() == OdbcData::Undef) {
ctx.pushStatus(Error::Gen, "parameter %u external type not defined", paramNumber);
return;
}
ExtType extType;
SQLSMALLINT desc_TYPE = descData.smallint();
switch (desc_TYPE) {
case SQL_C_CHAR:
case SQL_C_SHORT: // for sun.jdbc.odbc
case SQL_C_SSHORT:
case SQL_C_USHORT:
case SQL_C_LONG: // for sun.jdbc.odbc
case SQL_C_SLONG:
case SQL_C_ULONG:
case SQL_C_SBIGINT:
case SQL_C_UBIGINT:
case SQL_C_FLOAT:
case SQL_C_DOUBLE:
case SQL_C_TYPE_TIMESTAMP:
case SQL_C_BINARY: // XXX BLOB hack
break;
default:
ctx.pushStatus(Error::Gen, "parameter %u unsupported external type %d", paramNumber, (int)desc_TYPE);
return;
}
extType.setType(ctx, static_cast<ExtType::Type>(desc_TYPE));
ExtSpec extSpec(extType);
// create data field
rec.getField(ctx, SQL_DESC_DATA_PTR, descData);
if (descData.type() == OdbcData::Undef) {
ctx.pushStatus(Error::Gen, "parameter %u data address not defined", paramNumber);
return;
}
SQLPOINTER desc_DATA_PTR = descData.pointer();
rec.getField(ctx, SQL_DESC_OCTET_LENGTH, descData);
if (descData.type() == OdbcData::Undef) {
ctx.pushStatus(Error::Gen, "parameter %u data length not defined", paramNumber);
return;
}
SQLINTEGER desc_OCTET_LENGTH = descData.integer();
rec.getField(ctx, SQL_DESC_INDICATOR_PTR, descData);
if (descData.type() == OdbcData::Undef) {
ctx.pushStatus(Error::Gen, "parameter %u indicator address not defined", paramNumber);
return;
}
SQLINTEGER* desc_INDICATOR_PTR = descData.integerPtr();
ctx_log4(("parameter %u bind to 0x%x %d 0x%x", paramNumber, (unsigned)desc_DATA_PTR, (int)desc_OCTET_LENGTH, (unsigned)desc_INDICATOR_PTR));
ExtField& extField = *new ExtField(extSpec, desc_DATA_PTR, desc_OCTET_LENGTH, desc_INDICATOR_PTR, paramNumber);
data.m_atExec = false;
if (desc_INDICATOR_PTR != 0 && *desc_INDICATOR_PTR < 0) {
if (*desc_INDICATOR_PTR == SQL_NULL_DATA) {
;
} else if (*desc_INDICATOR_PTR == SQL_DATA_AT_EXEC) {
data.m_atExec = true;
} else if (*desc_INDICATOR_PTR <= SQL_LEN_DATA_AT_EXEC(0)) {
data.m_atExec = true;
}
}
delete data.m_extField;
data.m_extField = &extField;
}
void
Exec_expr_param::evaluate(Ctx& ctx, Ctl& ctl)
{
if (ctl.m_postEval)
return;
const Code& code = getCode();
Data& data = getData();
if (data.m_atExec)
return;
ctx_assert(data.m_extField != 0);
data.m_sqlField.copyin(ctx, *data.m_extField);
}
void
Exec_expr_param::close(Ctx& ctx)
{
Data& data = getData();
data.m_extPos = -1;
}
void
Exec_expr_param::print(Ctx& ctx)
{
const Code& code = getCode();
ctx.print(" [param %u]", code.m_paramNumber);
}
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