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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 <common/StmtArea.hpp>
#include "Code_query.hpp"
#include "Code_query_project.hpp"
#include "Code_query_count.hpp"
// Plan_query
Plan_query::~Plan_query()
{
}
Plan_expr_row*
Plan_query::getRow()
{
ctx_assert(false);
return 0;
}
void
Plan_query::describe(Ctx& ctx)
{
const Plan_expr_row* exprRow = getRow();
const unsigned count = exprRow->getSize();
// create IRD
DescArea& ird = descArea(Desc_usage_IRD);
ird.setCount(ctx, count);
for (unsigned i = 1; i <= count; i++) {
DescRec& rec = ird.getRecord(i);
const Plan_expr* expr = exprRow->m_exprList[i];
const SqlType& sqlType = expr->sqlType();
// data type
SQLSMALLINT desc_TYPE = sqlType.type();
rec.setField(SQL_DESC_TYPE, desc_TYPE);
SQLSMALLINT desc_CONCISE_TYPE = desc_TYPE;
rec.setField(SQL_DESC_CONCISE_TYPE, desc_CONCISE_TYPE);
SQLSMALLINT desc_DESC_DATETIME_INTERVAL_CODE = 0;
rec.setField(SQL_DESC_DATETIME_INTERVAL_CODE, desc_DESC_DATETIME_INTERVAL_CODE);
// nullable
SQLSMALLINT desc_NULLABLE = sqlType.nullable() ? SQL_NULLABLE : SQL_NO_NULLS;
rec.setField(SQL_DESC_NULLABLE, desc_NULLABLE);
// unsigned
SQLSMALLINT desc_UNSIGNED;
switch (sqlType.type()) {
case SQL_SMALLINT:
case SQL_INTEGER:
case SQL_BIGINT:
desc_UNSIGNED = sqlType.unSigned() ? SQL_TRUE : SQL_FALSE;
break;
default:
desc_UNSIGNED = SQL_TRUE; // thus spake microsoft
break;
}
rec.setField(SQL_DESC_UNSIGNED, desc_UNSIGNED);
// sizes
SQLUINTEGER desc_LENGTH = sqlType.length();
rec.setField(SQL_DESC_LENGTH, desc_LENGTH);
SQLINTEGER desc_OCTET_LENGTH = sqlType.size();
rec.setField(SQL_DESC_OCTET_LENGTH, desc_OCTET_LENGTH);
SQLINTEGER desc_DISPLAY_SIZE = sqlType.displaySize();
rec.setField(SQL_DESC_DISPLAY_SIZE, desc_DISPLAY_SIZE);
// name
ctx_assert(i < exprRow->m_aliasList.size());
const char* desc_NAME = exprRow->m_aliasList[i].c_str();
rec.setField(SQL_DESC_NAME, desc_NAME);
}
ctx_log3(("describe %u columns done", count));
stmtArea().setFunction(ctx, "SELECT CURSOR", SQL_DIAG_SELECT_CURSOR);
}
// Exec_query
Exec_query::Code::~Code()
{
}
Exec_query::Data::~Data()
{
delete m_extRow;
m_extRow = 0;
delete[] m_extPos;
m_extPos = 0;
}
Exec_query::~Exec_query()
{
}
const Exec_query*
Exec_query::getRawQuery() const
{
ctx_assert(false);
return 0;
}
void
Exec_query::bind(Ctx& ctx)
{
const Code& code = getCode();
const SqlSpecs& sqlSpecs = code.sqlSpecs();
const unsigned count = sqlSpecs.count();
// read ARD
DescArea& ard = descArea(Desc_usage_ARD);
const unsigned ardCount = ard.getCount();
// create specification row
ExtSpecs extSpecs(count);
for (unsigned i = 1; i <= count; i++) {
ExtType extType;
if (i <= ardCount) {
OdbcData descData;
DescRec& rec = ard.getRecord(i);
// check for unbound column
rec.getField(ctx, SQL_DESC_DATA_PTR, descData);
SQLPOINTER desc_DATA_PTR = descData.type() != OdbcData::Undef ? descData.pointer() : 0;
if (desc_DATA_PTR == 0) {
extType.setType(ctx, ExtType::Unbound);
} else {
rec.getField(ctx, SQL_DESC_TYPE, descData);
if (descData.type() == OdbcData::Undef) {
ctx.pushStatus(Error::Gen, "query column %u: external type not defined", i);
return;
}
SQLSMALLINT desc_TYPE = descData.smallint();
if (desc_TYPE == SQL_C_DEFAULT) {
if (i <= code.m_sqlSpecs.count())
desc_TYPE = code.m_sqlSpecs.getEntry(i).sqlType().sqlcdefault(ctx);
}
switch (desc_TYPE) {
case SQL_C_CHAR:
case SQL_C_BINARY:
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:
break;
default:
ctx.pushStatus(Error::Gen, "query column %u: unsupported external type %d", i, (int)desc_TYPE);
return;
}
extType.setType(ctx, static_cast<ExtType::Type>(desc_TYPE));
}
} else {
extType.setType(ctx, ExtType::Unbound);
}
const ExtSpec extSpec(extType);
extSpecs.setEntry(i, extSpec);
}
// create data row
ExtRow& extRow = *new ExtRow(extSpecs);
unsigned boundCount = 0;
for (unsigned i = 1; i <= count; i++) {
const ExtSpec& extSpec = extSpecs.getEntry(i);
if (extSpec.extType().type() != ExtType::Unbound) {
OdbcData descData;
DescRec& rec = ard.getRecord(i);
rec.getField(ctx, SQL_DESC_DATA_PTR, descData);
SQLPOINTER desc_DATA_PTR = descData.type() != OdbcData::Undef ? descData.pointer() : 0;
rec.getField(ctx, SQL_DESC_OCTET_LENGTH, descData);
SQLINTEGER desc_OCTET_LENGTH = descData.type() != OdbcData::Undef ? descData.integer() : 0;
rec.getField(ctx, SQL_DESC_INDICATOR_PTR, descData);
SQLINTEGER* desc_INDICATOR_PTR = descData.type() != OdbcData::Undef ? descData.integerPtr() : 0;
ctx_log4(("column %u: bind to 0x%x %d 0x%x", i, (unsigned)desc_DATA_PTR, (int)desc_OCTET_LENGTH, (unsigned)desc_INDICATOR_PTR));
ExtField extField(extSpec, desc_DATA_PTR, desc_OCTET_LENGTH, desc_INDICATOR_PTR, i);
extRow.setEntry(i, extField);
boundCount++;
} else {
ExtField extField(extSpec, i);
extRow.setEntry(i, extField);
}
}
Data& data = getData();
delete data.m_extRow;
data.m_extRow = &extRow;
ctx_log3(("bound %u out of %u columns", boundCount, count));
}
// execute and fetch
void
Exec_query::execute(Ctx& ctx, Ctl& ctl)
{
Data& data = getData();
execImpl(ctx, ctl);
if (! ctx.ok())
return;
data.initState();
if (m_topLevel) {
stmtArea().setRowCount(ctx, data.getCount());
}
}
bool
Exec_query::fetch(Ctx& ctx, Ctl& ctl)
{
const Code& code = getCode();
Data& data = getData();
if (data.fetch(ctx, ctl)) {
if (m_topLevel) {
stmtArea().setRowCount(ctx, data.getCount());
}
if (data.m_extRow != 0) {
data.sqlRow().copyout(ctx, *data.m_extRow);
if (! ctx.ok())
return false;
}
if (data.m_extPos != 0) {
const unsigned count = code.sqlSpecs().count();
for (unsigned i = 0; i <= count; i++) {
data.m_extPos[i] = 0;
}
}
return true;
}
if (m_topLevel) {
stmtArea().setRowCount(ctx, data.getCount());
if (ctx.ok()) {
ctx.setCode(SQL_NO_DATA);
}
}
return false;
}
// odbc support
void
Exec_query::sqlGetData(Ctx& ctx, SQLUSMALLINT columnNumber, SQLSMALLINT targetType, SQLPOINTER targetValue, SQLINTEGER bufferLength, SQLINTEGER* strlen_or_Ind)
{
const Code& code = getCode();
Data& data = getData();
const SqlSpecs& sqlSpecs = code.m_sqlSpecs;
const unsigned count = sqlSpecs.count();
if (columnNumber == 0 || columnNumber > count) {
ctx.pushStatus(Sqlstate::_07009, Error::Gen, "column index %u is not within 1 to %u", (unsigned)columnNumber, count);
return;
}
// create positions array on first use
if (data.m_extPos == 0) {
data.m_extPos = new int[1 + count];
for (unsigned i = 0; i <= count; i++) {
data.m_extPos[i] = 0;
}
}
if (targetType == SQL_ARD_TYPE) {
// get type from ARD
DescArea& ard = descArea(Desc_usage_ARD);
const unsigned ardCount = ard.getCount();
if (columnNumber <= ardCount) {
OdbcData descData;
DescRec& rec = ard.getRecord(columnNumber);
rec.getField(ctx, SQL_DESC_CONCISE_TYPE, descData);
if (descData.type() != OdbcData::Undef) {
targetType = descData.smallint();
}
}
if (targetType == SQL_ARD_TYPE) {
ctx.pushStatus(Sqlstate::_07009, Error::Gen, "output column %u type not bound - cannot use SQL_ARD_TYPE", (unsigned)columnNumber);
return;
}
}
ExtType extType;
if (targetValue != 0) {
extType.setType(ctx, static_cast<ExtType::Type>(targetType));
// check if supported
if (! ctx.ok())
return;
} else {
extType.setType(ctx, ExtType::Unbound);
}
ExtSpec extSpec(extType);
ExtField extField(extSpec, targetValue, bufferLength, strlen_or_Ind, columnNumber);
// copy out and update position
extField.setPos(data.m_extPos[columnNumber]);
const SqlRow& sqlRow = data.sqlRow();
const SqlField& sqlField = sqlRow.getEntry(columnNumber);
sqlField.copyout(ctx, extField);
data.m_extPos[columnNumber] = extField.getPos();
}
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