NetworkDNS/src-wip/org/handwerkszeug/dns/record/SingleNameRecord.java

package org.handwerkszeug.dns.record;

import java.util.List;

import org.handwerkszeug.dns.Name;
import org.handwerkszeug.dns.NameCompressor;
import org.handwerkszeug.dns.RRType;
import org.handwerkszeug.dns.ResourceRecord;

import io.netty.buffer.ByteBuf;

/**
 * <ul>
 * <li>3.3.1. CNAME RDATA format</li>
 * <li>3.3.11. NS RDATA format</li>
 * <li>3.3.12. PTR RDATA format</li>
 * </ul>
 *
 * @author taichi
 */
public
class SingleNameRecord extends AbstractRecord<SingleNameRecord> {

    protected Name oneName;

    public
    SingleNameRecord(RRType type) {
        super(type);
    }

    public
    SingleNameRecord(RRType type, Name oneName) {
        super(type);
        this.oneName = oneName;
    }

    public
    SingleNameRecord(SingleNameRecord from) {
        super(from);
        this.oneName = from.oneName();
    }

    public
    Name oneName() {
        return this.oneName;
    }

    @Override
    protected
    void parseRDATA(ByteBuf buffer) {
        this.oneName = new Name(buffer);
    }

    @Override
    protected
    void writeRDATA(ByteBuf buffer, NameCompressor compressor) {
        this.oneName.write(buffer, compressor);
    }

    @Override
    protected
    ResourceRecord newInstance() {
        return new SingleNameRecord(this);
    }

    @Override
    public
    int compareTo(SingleNameRecord o) {
        if ((this != o) && (super.compareTo(o) == 0)) {
            return this.oneName()
                       .compareTo(o.oneName());
        }
        return 0;
    }

    @Override
    public
    String toString() {
        StringBuilder stb = new StringBuilder();
        stb.append(super.toString());
        stb.append(' ');
        stb.append(this.oneName());
        return stb.toString();
    }

    @Override
    public
    void setRDATA(List<String> list) {
        if (0 < list.size()) {
            this.oneName = new Name(list.get(0));
        }
        else {
            throw new IllegalArgumentException();
        }
    }
}