116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/***********************************************************************
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printdata.cpp - Utility functions for printing out data in common
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formats, required by most of the example programs.
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Copyright (c) 1998 by Kevin Atkinson, (c) 1999-2001 by MySQL AB, and
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(c) 2004-2009 by Educational Technology Resources, Inc. Others may
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also hold copyrights on code in this file. See the CREDITS.txt file
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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 "printdata.h"
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#include <iostream>
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#include <iomanip>
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using namespace std;
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//// print_stock_header ////////////////////////////////////////////////
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// Display a header suitable for use with print_stock_rows().
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void
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print_stock_header(size_t rows)
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{
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cout << "Records found: " << rows << endl << endl;
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cout.setf(ios::left);
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cout << setw(31) << "Item" <<
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setw(10) << "Num" <<
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setw(10) << "Weight" <<
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setw(10) << "Price" <<
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"Date" << endl << endl;
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}
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//// print_stock_row ///////////////////////////////////////////////////
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// Print out a row of data from the stock table, in a format compatible
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// with the header printed out in the previous function.
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void
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print_stock_row(const mysqlpp::sql_char& item, mysqlpp::sql_bigint num,
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mysqlpp::sql_double weight, mysqlpp::sql_decimal_null price,
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const mysqlpp::sql_date& date)
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{
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cout << setw(30) << item << ' ' <<
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setw(9) << num << ' ' <<
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setw(9) << weight << ' ' <<
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setw(9) << price << ' ' <<
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date << endl;
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}
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//// print_stock_row ///////////////////////////////////////////////////
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// Take a Row from the example 'stock' table, break it up into fields,
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// and call the above version of this function.
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void
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print_stock_row(const mysqlpp::Row& row)
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{
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print_stock_row(string(row[0]), row[1], row[2], row[3], row[4]);
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}
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//// print_stock_rows //////////////////////////////////////////////////
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// Print out a number of rows from the example 'stock' table.
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void
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print_stock_rows(mysqlpp::StoreQueryResult& res)
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{
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print_stock_header(res.size());
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// Use the StoreQueryResult class's read-only random access iterator to walk
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// through the query results.
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mysqlpp::StoreQueryResult::iterator i;
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for (i = res.begin(); i != res.end(); ++i) {
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// Notice that a dereferenced result iterator can be converted
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// to a Row object, which makes for easier element access.
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print_stock_row(*i);
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}
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}
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//// print_stock_table /////////////////////////////////////////////////
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// Simply retrieve and print the entire contents of the stock table.
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void
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print_stock_table(mysqlpp::Query& query)
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{
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// Reset query object to its pristine state in case it's been used
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// before by our caller for template queries.
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query.reset();
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// Build the query itself, and show it to the user
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query << "select * from stock";
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cout << "Query: " << query << endl;
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// Execute it, and display the results
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mysqlpp::StoreQueryResult res = query.store();
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print_stock_rows(res);
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}
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