org.h2.mvstore.rtree.SpatialKey Maven / Gradle / Ivy
/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.mvstore.rtree;
import java.util.Arrays;
/**
* A unique spatial key.
*/
public class SpatialKey {
private final long id;
private final float[] minMax;
/**
* Create a new key.
*
* @param id the id
* @param minMax min x, max x, min y, max y, and so on
*/
public SpatialKey(long id, float... minMax) {
this.id = id;
this.minMax = minMax;
}
/**
* Get the minimum value for the given dimension.
*
* @param dim the dimension
* @return the value
*/
public float min(int dim) {
return minMax[dim + dim];
}
/**
* Set the minimum value for the given dimension.
*
* @param dim the dimension
* @param x the value
*/
public void setMin(int dim, float x) {
minMax[dim + dim] = x;
}
/**
* Get the maximum value for the given dimension.
*
* @param dim the dimension
* @return the value
*/
public float max(int dim) {
return minMax[dim + dim + 1];
}
/**
* Set the maximum value for the given dimension.
*
* @param dim the dimension
* @param x the value
*/
public void setMax(int dim, float x) {
minMax[dim + dim + 1] = x;
}
public long getId() {
return id;
}
public boolean isNull() {
return minMax.length == 0;
}
@Override
public String toString() {
StringBuilder buff = new StringBuilder();
buff.append(id).append(": (");
for (int i = 0; i < minMax.length; i += 2) {
if (i > 0) {
buff.append(", ");
}
buff.append(minMax[i]).append('/').append(minMax[i + 1]);
}
return buff.append(")").toString();
}
@Override
public int hashCode() {
return (int) ((id >>> 32) ^ id);
}
@Override
public boolean equals(Object other) {
if (other == this) {
return true;
} else if (!(other instanceof SpatialKey)) {
return false;
}
SpatialKey o = (SpatialKey) other;
if (id != o.id) {
return false;
}
return equalsIgnoringId(o);
}
/**
* Check whether two objects are equals, but do not compare the id fields.
*
* @param o the other key
* @return true if the contents are the same
*/
public boolean equalsIgnoringId(SpatialKey o) {
return Arrays.equals(minMax, o.minMax);
}
}