org.elasticsearch.common.Priority Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License 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 org.elasticsearch.common;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import java.io.IOException;
/**
*
*/
public final class Priority implements Comparable {
public static Priority readFrom(StreamInput input) throws IOException {
return fromByte(input.readByte());
}
public static void writeTo(Priority priority, StreamOutput output) throws IOException {
byte b = priority.value;
output.writeByte(b);
}
public static Priority fromByte(byte b) {
switch (b) {
case -1: return IMMEDIATE;
case 0: return URGENT;
case 1: return HIGH;
case 2: return NORMAL;
case 3: return LOW;
case 4: return LANGUID;
default:
throw new IllegalArgumentException("can't find priority for [" + b + "]");
}
}
public static final Priority IMMEDIATE = new Priority((byte) -1);
public static final Priority URGENT = new Priority((byte) 0);
public static final Priority HIGH = new Priority((byte) 1);
public static final Priority NORMAL = new Priority((byte) 2);
public static final Priority LOW = new Priority((byte) 3);
public static final Priority LANGUID = new Priority((byte) 4);
private static final Priority[] values = new Priority[] { IMMEDIATE, URGENT, HIGH, NORMAL, LOW, LANGUID };
private final byte value;
private Priority(byte value) {
this.value = value;
}
/**
* @return an array of all available priorities, sorted from the highest to the lowest.
*/
public static Priority[] values() {
return values;
}
@Override
public int compareTo(Priority p) {
return (this.value < p.value) ? -1 : ((this.value > p.value) ? 1 : 0);
}
public boolean after(Priority p) {
return value > p.value;
}
public boolean sameOrAfter(Priority p) {
return value >= p.value;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || Priority.class != o.getClass()) return false;
Priority priority = (Priority) o;
if (value != priority.value) return false;
return true;
}
@Override
public int hashCode() {
return (int) value;
}
@Override
public String toString() {
switch (value) {
case (byte) -1: return "IMMEDIATE";
case (byte) 0: return "URGENT";
case (byte) 1: return "HIGH";
case (byte) 2: return "NORMAL";
case (byte) 3: return "LOW";
default:
return "LANGUID";
}
}
}