get_or_throw()

template<typename T >

T MayaFlux::Yantra::ExecutionContext::get_or_throw ( const std::string &  key ) const

inline

Retrieve metadata value or throw if unavailable.

Uses safe_any_cast_or_throw.

Template Parameters

T	Expected type

Parameters

key	Metadata key

Returns

Retrieved value

Exceptions

std::runtime_error

if key missing or conversion fails

Definition at line 192 of file ExecutionContext.hpp.

    {
        auto it = execution_metadata.find(key);
 
        if (it == execution_metadata.end())
            throw std::runtime_error("ExecutionContext missing key: " + key);
 
        return safe_any_cast_or_throw<T>(it->second);
    }