eu.pursuit.core.ItemName.java Source code

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Here is the source code for eu.pursuit.core.ItemName.java

Source

/*
 * Copyright (C) 2011  Christos Tsilopoulos, Mobile Multimedia Laboratory, 
 * Athens University of Economics and Business 
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 3 as published by the Free Software Foundation.
 *
 * See LICENSE and COPYING for more details.
 */

package eu.pursuit.core;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.codec.binary.Hex;

public class ItemName {
    private final ScopeID scopeId;
    private final ByteIdentifier rendezvousId;

    public ItemName(ScopeID scopeId, ByteIdentifier rendezvousId) {
        super();
        this.scopeId = scopeId;
        this.rendezvousId = rendezvousId;
    }

    public ScopeID getScopeId() {
        return scopeId;
    }

    public ByteIdentifier getRendezvousId() {
        return rendezvousId;
    }

    @Override
    public String toString() {
        return scopeId.toString() + "/" + Hex.encodeHexString(rendezvousId.getId());
    }

    public byte[] toByteArray() {
        int length = 0;
        if (scopeId != null) {
            length += scopeId.getLength();
        }

        if (rendezvousId != null) {
            length += rendezvousId.getId().length;
        }

        ByteBuffer buffer = ByteBuffer.allocate(length);
        if (scopeId != null) {
            scopeId.fill(buffer);
        }

        if (rendezvousId != null) {
            buffer.put(rendezvousId.getId());
        }
        return buffer.array();
    }

    public static ItemName parseSerializedName(byte[] array, int segmentSize) {
        if (array.length % segmentSize != 0) {
            throw new IllegalArgumentException(
                    "array length (" + array.length + ") not a multiple of segmentSize (" + segmentSize + ")");
        }

        ByteBuffer bbuffer = ByteBuffer.wrap(array);
        List<ByteIdentifier> list = new ArrayList<ByteIdentifier>();
        int howmany = array.length / segmentSize;
        for (int i = 0; i < howmany - 1; i++) {
            byte[] arr = new byte[segmentSize];
            bbuffer.get(arr);
            list.add(new ByteIdentifier(arr));
        }
        ScopeID scope = new ScopeID(list);

        byte[] arr = new byte[segmentSize];
        bbuffer.get(arr);
        ByteIdentifier rid = new ByteIdentifier(arr);

        return new ItemName(scope, rid);
    }
}