package org.tron.common.storage;

import org.apache.commons.lang3.ArrayUtils;

import java.util.Arrays;

public class Key {

private static int MAX_KEY_LENGTH = 32;

private static int MIN_KEY_LENGTH = 1;

/**

* data could not be null

*/

private byte[] data = new byte[0];

/**

*

* @param data

*/

public Key(byte[] data) {

if (data != null && data.length != 0) {

this.data = new byte[data.length];

System.arraycopy(data, 0, this.data, 0, data.length);

}

}

/**

*

* @param key

*/

private Key(Key key) {

this.data = new byte[key.getData().length];

System.arraycopy(key.getData(), 0, this.data, 0, this.data.length);

}

/**

*

* @return

*/

public Key clone() {

return new Key(this);

}

/**

*

* @return

*/

public byte[] getData() {

return data;

}

@Override

public boolean equals(Object o) {

if (this == o) return true;

if (o == null || getClass() != o.getClass()) return false;

Key key = (Key) o;

if (Arrays.equals(key.getData(), this.data)) return true;

return false;

}

@Override

public int hashCode() {

return data != null ? ArrayUtils.hashCode(data) : 0;

}

/**

*

* @param data

* @return

*/

public static Key create(byte[] data) {

return new Key(data);

}

}