public String toString() {
StringBuilder buffer = new StringBuilder();
buffer.append("Hosts: ").append(this.getHosts().size()).append("\n");
buffer.append("Sites: ").append(this.sites.size()).append("\n");
buffer.append("Fragments: ").append(this.fragments.size()).append("\n");
SortedSet<String> hosts = new TreeSet<String>();
hosts.addAll(this.getHosts());
for (String host_key : hosts) {
buffer.append("\nHost ").append(CatalogKey.getNameFromKey(host_key)).append("\n");
for (SiteEntry site : this.host_site_xref.get(host_key)) {
buffer.append(SPACER).append("Site ").append(site.getId()).append("\n");
for (FragmentEntry fragment : site.getFragments()) {
buffer
.append(SPACER)
.append(SPACER)
.append("Fragment ")
.append(fragment)
.append(" Size=")
.append(fragment.getEstimatedSize())
.append(" Heat=")
.append(fragment.getEstimatedHeat())
.append("\n");
} // FOR
} // FOR
buffer.append("--------------------");
} // FOR
return (buffer.toString());
}