Function NewNamespacedContextReader

datasource/context.go:279–284

NewNestedContextReader provides a context reader which prefixes all keys with a name space. This is useful if you have overlapping field names between ContextReaders within a NestedContextReader. msg.Get("foo.key")

(basereader expr.ContextReader, namespace string)

//      msg.Get("foo.key")
//
func NewNamespacedContextReader(basereader expr.ContextReader, namespace string) expr.ContextReader {
	if namespace == "" {
		return basereader
	}
	return &NamespacedContextReader{basereader, strings.ToLower(namespace)}
}

func (n *NamespacedContextReader) Get(key string) (value.Value, bool) {
	left, right, has := expr.LeftRight(key)