Returns the value to substitute for the given unresolved path.
Returns the value to substitute for the given unresolved path. To get the
components of the path use ConfigUtil#splitPath(String)
. If a
non-null value is returned that value will be substituted, otherwise
resolution will continue to consider the substitution as still
unresolved.
the unresolved path
the value to use as a substitution or null
Returns a new resolver that falls back to the given resolver if this one doesn't provide a substitution itself.
Returns a new resolver that falls back to the given resolver if this one doesn't provide a substitution itself.
It's important to handle the case where you already have the fallback with a "return this", i.e. this method should not create a new object if the fallback is the same one you already have. The same fallback may be added repeatedly.
the previous includer for chaining
a new resolver
Implement this interface and provide an instance to
ConfigResolveOptions.appendResolver()
to provide custom behavior when unresolved substitutions are encountered during resolution.1.3.2