binder

type Entries []FactoryEntry

type FactoryEntry struct {
	Name    string
	Factory interface{}
	Weight  int // bigger weight will be initialized first
}

type FuncFactory interface {
	Function(name string) (api.Function, error)
	// HasFunctionSet Some functions are bundled together into a plugin which shares the same json file.
	// This function can return if the function set name exists.
	HasFunctionSet(funcName string) bool
	// ConvName Convert the name of the function usually to lowercase.
	// This is only be used when parsing the SQL statement.
	ConvName(funcName string) (string, bool)
}

type SinkFactory interface {
	Sink(name string) (api.Sink, error)
}

type SourceFactory interface {
	Source(name string) (api.Source, error)
	LookupSource(name string) (api.LookupSource, error)
}