org.eclipse.neoscada.protocol.iec60870.asdu.message.InterrogationCommand.java Source code

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Here is the source code for org.eclipse.neoscada.protocol.iec60870.asdu.message.InterrogationCommand.java

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/*******************************************************************************
 * Copyright (c) 2014 IBH SYSTEMS GmbH and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBH SYSTEMS GmbH - initial API and implementation
 *******************************************************************************/
package org.eclipse.neoscada.protocol.iec60870.asdu.message;

import org.eclipse.neoscada.protocol.iec60870.ProtocolOptions;
import org.eclipse.neoscada.protocol.iec60870.asdu.ASDUHeader;
import org.eclipse.neoscada.protocol.iec60870.asdu.types.ASDU;
import org.eclipse.neoscada.protocol.iec60870.asdu.types.Cause;
import org.eclipse.neoscada.protocol.iec60870.asdu.types.InformationObjectAddress;

import io.netty.buffer.ByteBuf;

@ASDU(id = 100, name = "C_IC_NA_1")
public class InterrogationCommand extends AbstractInformationObjectMessage {
    private final short qualifierOfInterrogation;

    public InterrogationCommand(final ASDUHeader header, final short qualifierOfInterrogation) {
        this(header, InformationObjectAddress.DEFAULT, qualifierOfInterrogation);
    }

    public InterrogationCommand(final ASDUHeader header, final InformationObjectAddress informationObjectAddress,
            final short qualifierOfInterrogation) {
        super(header, informationObjectAddress);
        this.qualifierOfInterrogation = qualifierOfInterrogation;
    }

    public short getQualifierOfInterrogation() {
        return this.qualifierOfInterrogation;
    }

    public static InterrogationCommand parse(final ProtocolOptions options, final byte length,
            final ASDUHeader header, final ByteBuf data) {
        final InformationObjectAddress informationObjectAddress = InformationObjectAddress.parse(options, data);
        final short qualifierOfInterrogation = data.readUnsignedByte();
        final InterrogationCommand result = new InterrogationCommand(header, informationObjectAddress,
                qualifierOfInterrogation);
        return result;
    }

    @Override
    public void encode(final ProtocolOptions options, final ByteBuf out) {
        EncodeHelper.encodeHeader(this, options, null, this.header, out);
        this.informationObjectAddress.encode(options, out);
        out.writeByte(this.qualifierOfInterrogation);
    }

    public InterrogationCommand mirror(final Cause cause) {
        return new InterrogationCommand(this.header.clone(cause), this.qualifierOfInterrogation);
    }
}