- All Implemented Interfaces:
- PathAndGroupReference, PathReference
- Direct Known Subclasses:
- AmpReference, DollarReference
public abstract class BasePathAndGroupReference
extends java.lang.Object
implements PathAndGroupReference
All "References" extend this class and support three level of syntactic sugar
Example with the AmpReference
1 "&"
2 "&0"
3 "&(0,0)"
all three mean the same thing.
References are used to look up values in a WalkedPath.
In the CanonicalForm the first entry is how far up the WalkedPath to look for a LiteralPathElement,
and the second entry is which part of that LiteralPathElement to ask for.