A C++ DAL / ORM code generation framework
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#include "../src/sql/wsqldatabase.h"
#include <iostream>
int main()
{
WSql::WSqlDatabase db ( WSql::WMYSQL );
db.setDatabaseName ( std::string ( "sakila" ) );
db.setUserName ( "root" );
if ( !db.open() )
{
std::cerr << "Failed to open: " << db.error().text() << std::endl;
return 1;
}
std::vector<std::string>tables = db.tableNames();
if ( db.hasError() )
std::cout << "error: " << db.error().text() << std::endl;
std::vector<std::string>::iterator it = tables.begin();
WSql::WSqlTable stbl;
int numflds = 0;
int row = 0;
while ( it != tables.end() )
{
std::vector<std::string> column_names;
stbl = db.tableMetaData ( *it );
numflds = stbl.count();
std::cout << " ======== Table name: " << stbl.name()
<< " =========" << std::endl;
for ( int i = 0; i < numflds; ++i )
{
WSql::WSqlColumn clm = stbl.column ( i );
column_names.push_back ( clm.columnName() );
std::cout << "Column " << i << " = " << clm.columnName() << std::endl;
std::cout << " * Data type: " << WSql::WSqlDataType::toString ( clm.dataType() ) << std::endl;
std::cout << " * Max Length: " << clm.maxLength() << std::endl;
std::cout << " * Unsigned: " << ( clm.isUnsigned() ? "true" : "false" ) << std::endl;
std::cout << " * Can be null: " << ( clm.canBeNull() ? "true" : "false" ) << std::endl;
std::cout << " * Primary key: " << ( clm.isPrimaryKey() ? "true" : "false" ) << std::endl;
std::cout << " * Autoincrement: " << ( clm.isAutoIncremented() ? "true" : "false" ) << std::endl;
std::cout << " * default value: " << clm.defaultValue<std::string>() << std::endl;
}
std::string sql = "select * from " + *it + " limit 2;";
if ( !db.doQuery ( sql ) )
{
std::cout << "Query Failed: " << db.error().text() << std::endl;
it++;
continue;
}
else
{
WSql::WSqlResult *result = db.getResult();
WSql::WSqlRecord record = result->fetchFirst();
while ( !record.empty() )
{
std::cout << "Record Size: " << record.size() << std::endl;
WSql::WSqlField fld;
int pt = 0;
for ( ; pt < record.size(); pt++ )
{
// std::cout << "data for " << column_names[pt] << ": " << record[column_names[pt]] << std::endl;
//no danger - if there is nothing there we still get an empty field object
fld = record.field ( pt );
std::cout << "Field " << fld.name() << ", Origin Column " << fld.columnName() << ": "
<< fld.data<std::string>() << std::endl;
}
record = result->fetchNext();
}
}
it++;
}
}