A C++ DAL / ORM code generation framework
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#include "../src/sql/wsqldatabase.h"
#include <iostream>
int main()
{
WSql::WSqlDatabase db(WSql::WSQLITE);
db.setDatabaseName(std::string("blog.db"));
if (!db.open()) {
std::cerr << "Failed to open: " << db.error().text() << std::endl;
return 1;
}
std::vector<std::string>tables = db.tableNames();
std::vector<std::string>::iterator it = tables.begin();
WSql::WSqlTable stbl;
int numflds = 0;
int row = 0;
while (it != tables.end())
{
std::string sql = "select * from " + *it + " ;";
if(!db.doQuery(sql))
{
std::cerr << "Query Failed: " << db.error().text() << std::endl;
it++;
continue;
}else{
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 << " * 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;
}
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 < column_names.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()<< ", Column "<< fld.columnName() << ": "
<< fld.data<std::string>() << std::endl;
}
record = result->fetchNext();
}
}
it++;
}
}