com.emc.atmos.api.ChecksumValue Maven / Gradle / Ivy
/*
* Copyright 2013 EMC Corporation. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.emc.atmos.api;
/**
* Represents a checksum value. Can yield the algorithm, offset (if applicable) and hex-value of the sum.
*/
public abstract class ChecksumValue {
public abstract ChecksumAlgorithm getAlgorithm();
public abstract long getOffset();
public abstract String getValue();
/**
* Outputs this checksum in a format suitable for including in Atmos create/update calls.
*/
@Override
public String toString() {
return toString( true );
}
public String toString( boolean includeByteCount ) {
String out = this.getAlgorithm().toString();
if ( includeByteCount ) out += "/" + this.getOffset();
out += "/" + getValue();
return out;
}
@Override
public boolean equals( Object o ) {
if ( this == o ) return true;
if ( !(o instanceof ChecksumValue) ) return false;
ChecksumValue that = (ChecksumValue) o;
if ( getOffset() != that.getOffset() ) return false;
if ( getAlgorithm() != that.getAlgorithm() ) return false;
if ( !getValue().equals( that.getValue() ) ) return false;
return true;
}
@Override
public int hashCode() {
int result = getAlgorithm().hashCode();
result = 31 * result + (int) (getOffset() ^ (getOffset() >>> 32));
result = 31 * result + getValue().hashCode();
return result;
}
}