public int getSource(int target) {
if (target == this.target) {
return this.source;
} else {
return parent.getSource(target);
}
}
public boolean isIdentity() {
// FIXME: It's possible that parent was not the identity but that
// this overriding fixed it.
return (source == target) && parent.isIdentity();
}
public Mapping inverse() {
return new OverridingTargetMapping((TargetMapping) parent.inverse(), target, source);
}
public MappingType getMappingType() {
// FIXME: Mapping type might be weaker than parent.
return parent.getMappingType();
}
public int size() {
return parent.getSourceOpt(target) >= 0 ? parent.size() : parent.size() + 1;
}