Class Mapping.ShadowedMapping

Description

A mapping look-alike that overrides (ie shadows) another parent mapping.

The class implements most of the usual mapping operations.

Variable parent

protected mapping|ShadowedMapping Mapping.ShadowedMapping.parent

Method create

Mapping.ShadowedMapping Mapping.ShadowedMapping(mapping|ShadowedMapping parent, mapping|ShadowedMapping parent, mapping|void shadow, int(0..2)|void modify_parent)

Parameter parent

Mapping to be shadowed.

Parameter shadow

Initial shadow of parent.

Parameter modify_parent

Modifications should be done to parent rather than to shadow.

0	Modifications should be done only to shadow.
1	Entries that already present in shadow can be modified by later operations. Other modifications will be performed in parent.
2	All modifications will be performed in parent. If the entry to be modified is present in shadow, it will be removed from it.