@Override
public void copy(URI fromURI, URI toURI) {
// TODO - Determine how copy should work. Currently copy and move are
// different. Copy works like an OS where "if destination exists, put
// it underneath. else name if for destination. IE cp a/b n would create
// just n... or if n already exists, then it would create n/b.
// I don't think FS2 needs this level of complexity. Move is implemented
// more simply, fast fail if destination exists.
// DEEP copy
boolean toRootPreExists = exists(toURI);
URI newRootURI = CoreFS2Utils.createCopiedURI(toRootPreExists, fromURI, toURI, fromURI);
// copy root
copySingleNode(fromURI, newRootURI);
// copy descendants (tree-walking order does not matter for memory
// implementation)
Set<URI> descendants = listDescendants(fromURI);
for (URI descendant : descendants) {
// there is some complexity determining the new location, based around
// whether the target pre-exists
URI descendantToURI =
CoreFS2Utils.createCopiedURI(toRootPreExists, fromURI, toURI, descendant);
copySingleNode(descendant, descendantToURI);
}
}
