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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.metrics.simple;
/**
* The name of the metric and its n-dimensional position. Basically a pair of a
* Point and a metric name. Written to be robust against null input as the API
* gives very little guidance, converting null to empty string/point. Immutable.
*
* @author Steinar Knutsen
*/
public class Identifier {
private final String name;
private final Point location;
private final int hashCode;
public Identifier(String name, Point location) {
this.name = (name == null ? "" : name);
this.location = (location == null ? Point.emptyPoint() : location);
this.hashCode = this.location.hashCode() * 31 + this.name.hashCode();
}
@Override
public int hashCode() {
return hashCode;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
Identifier other = (Identifier) obj;
return location.equals(other.location) && name.equals(other.name);
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("Identifier [name=").append(name).append(", location=").append(location).append("]");
return builder.toString();
}
public String getName() {
return name;
}
public Point getLocation() {
return location;
}
}
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