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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.component.chain;
import com.yahoo.component.chain.dependencies.Dependencies;
import java.util.Set;
import java.util.TreeSet;
/**
* Used for many to many constraints on searcher ordering. Immutable.
*
* @author Tony Vaagenes
*/
public class Phase {
public final Dependencies dependencies;
public Phase(String name, Set<String> before, Set<String> after) {
dependencies = new Dependencies(provides(name), before, after);
}
public Phase(String name, Dependencies dependencies) {
this(name, dependencies.before(), dependencies.after());
assert(dependencies.provides().isEmpty());
}
private Set<String> provides(String name) {
Set<String> provides = new TreeSet<>();
provides.add(name);
return provides;
}
public String getName() {
return dependencies.provides().iterator().next();
}
public Set<String> before() {
return dependencies.before();
}
public Set<String> after() {
return dependencies.after();
}
public Phase union(Phase phase) {
assert(getName().equals(phase.getName()));
Dependencies union = dependencies.union(phase.dependencies);
return new Phase(getName(), union.before(), union.after());
}
}
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