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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchlib.mlr.ga;
/**
* The name of a species. For tracking purposes.
* A name has the form superSpeciesName + "/" + serialNumber.generationNumber.
*
* @author bratseth
*/
public class SpeciesName {
private final int level, serial, generation;
private final String name, prefixName;
private SpeciesName(int level, int serial, int generation, String prefixName) {
this.level = level;
this.serial = serial;
this.generation = generation;
this.prefixName = prefixName;
if (level == 0)
this.name = "";
else
this.name = prefixName + (prefixName.isEmpty() ? "" : "/") + serial + "." + generation;
}
/**
* The level in the species hierarchy of the species having this name.
* The root species has level 0.
*/
public int level() { return level; }
/** Returns the name of the root species: The empty string at level 0 */
public static SpeciesName createRoot() {
return new SpeciesName(0 ,0 ,0, "");
}
@Override
public String toString() {
if (level == 0) return "(root)";
return name;
}
/** Returns the name of a new subspecies */
public SpeciesName subspecies(int serial) {
return new SpeciesName(level+1, serial, 0, name);
}
/** Returns the name of the successor of this species */
public SpeciesName successor(int serial) {
return new SpeciesName(level, serial, generation+1, prefixName);
}
}
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