package io.ebeaninternal.server.core.bootup;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.TreeSet;
/**
* Distill packages into distinct top level packages for searching.
*/
class DistillPackages {
/**
* Distill the list of packages into distinct top level packages.
*/
static List<String> distill(Collection<String> packages, Collection<String> mfPackages) {
// sort into natural order
TreeSet<String> treeSet = new TreeSet<>();
treeSet.addAll(packages);
treeSet.addAll(mfPackages);
List<String> distilled = new ArrayList<>();
// build the distilled list
for (String pack : treeSet) {
if (notAlreadyContained(distilled, pack)) {
distilled.add(pack);
}
}
return distilled;
}
/**
* Return true if the package is not already contained in the distilled list.
*/
private static boolean notAlreadyContained(List<String> distilled, String pack) {
for (String aDistilled : distilled) {
if (pack.startsWith(aDistilled)) {
return false;
}
}
return true;
}
}