dboo::odb::count

C++

template<class selected_type>
size_t count ();                                               // 1)
size_t count(const std::string& clsid );                       // 1)
template<class selected_type>
size_t count(FieldComparison* expression);                             // 2)
size_t count(const std::string& clsid, FieldComparison* expression);   // 2)
template<class selected_type>
size_t count(SetComparison* expression);                               // 2)
size_t count(const std::string& clsid, SetComparison* expression);     // 2)

Node.js

n/a

Returns the number of objects matching an expression. For Node.js, use the function dboo::odb::query.

1

Returns the number of objects of specified class

2

Returns the number of objects of specified class that matches expression

Type parameters

selected_type

The type of which to check the number of objects.

Parameters

clsid

The class name to run the query for.

expression

The query expression.

Return value

The number of matching objects.

Exceptions

Example

C++

Node.js