240 lines
4.1 KiB
C++
240 lines
4.1 KiB
C++
/***********************************************************************
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result.cpp - Implements the Result, ResNSel, and ResUse classes.
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Copyright (c) 1998 by Kevin Atkinson, (c) 1999, 2000 and 2001 by
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MySQL AB, and (c) 2004, 2005 by Educational Technology Resources, Inc.
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Others may also hold copyrights on code in this file. See the CREDITS
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file in the top directory of the distribution for details.
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This file is part of MySQL++.
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MySQL++ is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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MySQL++ is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with MySQL++; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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***********************************************************************/
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#include "result.h"
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#include "connection.h"
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namespace mysqlpp {
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ResNSel::ResNSel(Connection* q) :
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success(q->success()),
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insert_id(q->insert_id()),
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rows(q->affected_rows()),
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info(q->info())
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{
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}
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ResUse::ResUse(MYSQL_RES* result, Connection* c, bool te) :
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OptionalExceptions(te),
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conn_(c),
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initialized_(false),
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names_(0),
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types_(0),
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fields_(this)
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{
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if (!result) {
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result_ = 0;
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types_ = 0;
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names_ = 0;
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return;
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}
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result_ = result;
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names_ = new FieldNames(this);
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if (names_) {
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types_ = new FieldTypes(this);
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}
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table_ = fields(0).table;
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initialized_ = true;
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}
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ResUse::~ResUse()
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{
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purge();
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}
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void
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ResUse::copy(const ResUse& other)
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{
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if (initialized_) {
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purge();
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}
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set_exceptions(other.throw_exceptions());
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if (!other.result_) {
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result_ = 0;
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types_ = 0;
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names_ = 0;
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initialized_ = other.initialized_;
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return;
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}
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result_ = other.result_;
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fields_ = Fields(this);
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if (other.names_) {
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names_ = new FieldNames(*other.names_);
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}
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else {
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names_ = 0;
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}
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if (other.types_) {
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types_ = new FieldTypes(*other.types_);
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}
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else {
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types_ = 0;
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}
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table_ = other.table_;
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conn_ = other.conn_;
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initialized_ = true;
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}
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int
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ResUse::field_num(const std::string& i) const
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{
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if (!names_) {
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names_ = new FieldNames(this);
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}
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size_t index = (*names_)[i];
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if ((index >= names_->size()) && throw_exceptions()) {
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throw BadFieldName(i.c_str());
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}
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return int(index);
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}
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std::string&
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ResUse::field_name(int i)
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{
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if (!names_) {
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names_ = new FieldNames(this);
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}
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return (*names_)[i];
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}
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const std::string&
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ResUse::field_name(int i) const
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{
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if (!names_) {
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names_ = new FieldNames(this);
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}
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return (*names_)[i];
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}
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FieldNames&
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ResUse::field_names()
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{
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if (!names_) {
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names_ = new FieldNames(this);
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}
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return *names_;
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}
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const FieldNames&
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ResUse::field_names() const
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{
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if (!names_) {
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names_ = new FieldNames(this);
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}
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return *names_;
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}
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void
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ResUse::reset_field_names()
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{
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delete names_;
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names_ = 0;
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names_ = new FieldNames(this);
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}
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mysql_type_info&
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ResUse::field_type(int i)
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{
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if (!types_) {
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types_ = new FieldTypes(this);
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}
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return (*types_)[i];
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}
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const mysql_type_info&
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ResUse::field_type(int i) const
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{
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if (!types_) {
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types_ = new FieldTypes(this);
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}
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return (*types_)[i];
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}
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FieldTypes&
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ResUse::field_types()
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{
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if (!types_) {
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types_ = new FieldTypes(this);
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}
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return *types_;
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}
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const FieldTypes&
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ResUse::field_types() const
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{
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if (!types_) {
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types_ = new FieldTypes(this);
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}
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return *types_;
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}
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void
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ResUse::reset_field_types()
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{
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delete types_;
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types_ = 0;
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types_ = new FieldTypes(this);
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}
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ResUse&
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ResUse::operator =(const ResUse& other)
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{
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if (this == &other) {
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return *this;
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}
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copy(other);
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other.result_ = 0;
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return *this;
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}
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} // end namespace mysqlpp
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