net.sf.jrtps.message.parameter.QosLifespan Maven / Gradle / Ivy

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package net.sf.jrtps.message.parameter;

import net.sf.jrtps.transport.RTPSByteBuffer;
import net.sf.jrtps.types.Duration;

/**
 * See DDS specification v1.2, ch 7.1.3.16
 * 
 * @author mcr70
 * 
 */
public class QosLifespan extends Parameter implements DataReaderPolicy, DataWriterPolicy,
        TopicPolicy, InlineParameter {
    private Duration duration;

    QosLifespan() {
        super(ParameterEnum.PID_LIFESPAN);
    }

    /**
     * Constructor for QosLifespan.
     * 
     * @param duration
     */
    public QosLifespan(Duration duration) {
        super(ParameterEnum.PID_LIFESPAN);
        this.duration = duration;
    }

    @Override
    public void read(RTPSByteBuffer bb, int length) {
        this.duration = new Duration(bb);
    }

    @Override
    public void writeTo(RTPSByteBuffer bb) {
        duration.writeTo(bb);
    }

    @Override
    public boolean isCompatible(QosLifespan other) {
        return true; // Always true. TODO: check this
    }

    /**
     * Get the default QosLifespan with infinite duration.
     * 
     * @return default QosLifespan
     */
    public static QosLifespan defaultLifespan() {
        return new QosLifespan(Duration.INFINITE);
    }

    public String toString() {
        return super.toString() + "(" + duration + ")";
    }
}