org.jgroups.util.Range Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.util;


import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;


public class Range implements SizeStreamable, Comparable {
    public long low=-1;  // first msg to be retransmitted
    public long high=-1; // last msg to be retransmitted



    /** For externalization */
    public Range() {
    }

    public Range(long low, long high) {
        this.low=low; this.high=high;
    }


    public String toString() {
        return "[" + low + " : " + high + ']';
    }


    public int compareTo(Range other) {
        if(low == other.low && high == other.high)
            return 0;
        return low < other.low? -1 : 1;
    }

    public int hashCode() {
        return (int)low;
    }

    public boolean equals(Object obj) {
        Range other=(Range)obj;
        return compareTo(other) == 0;
    }


    @Override
    public void writeTo(DataOutput out) throws IOException {
        Bits.writeLongSequence(low, high, out);
    }

    @Override
    public void readFrom(DataInput in) throws IOException {
        long[] seqnos={0,0};
        Bits.readLongSequence(in, seqnos, 0);
        low=seqnos[0];
        high=seqnos[1];
    }

    @Override
    public int serializedSize() {
        return Bits.size(low, high);
    }


}