net.sf.jrtps.message.ParameterListEncapsulation Maven / Gradle / Ivy

package net.sf.jrtps.message;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;

import net.sf.jrtps.message.parameter.ParameterList;
import net.sf.jrtps.transport.RTPSByteBuffer;

/**
 * ParameterListEncapsulation is a specialization of DataEncapsulation which is
 * used by discovery.
 * 
 * @author mcr70
 * 
 */
public class ParameterListEncapsulation extends DataEncapsulation {
    private ParameterList parameters;
    @SuppressWarnings("unused")
    private short options;

    public ParameterListEncapsulation(ParameterList parameters) {
        this.parameters = parameters;
        this.options = 0;

    }

    ParameterListEncapsulation(RTPSByteBuffer bb) {
        this.options = (short) bb.read_short();
        this.parameters = new ParameterList(bb);
    }

    public ParameterList getParameterList() {
        return parameters;
    }

    @Override
    public boolean containsData() {
        return true; // TODO: how do we represent key in serialized payload
    }

    @Override
    public byte[] getSerializedPayload() {
        ByteBuffer buffer = ByteBuffer.allocate(1024); // TODO: hardcoded
        buffer.order(ByteOrder.BIG_ENDIAN);
        RTPSByteBuffer bb = new RTPSByteBuffer(buffer);

        bb.write(PL_CDR_BE_HEADER);

        parameters.writeTo(bb);

        byte[] serializedPayload = new byte[buffer.position()];
        System.arraycopy(bb.getBuffer().array(), 0, serializedPayload, 0, serializedPayload.length);

        return serializedPayload;
    }
}