io.netlibs.bgp.protocol.attributes.CommunityPathAttribute.java Source code

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Here is the source code for io.netlibs.bgp.protocol.attributes.CommunityPathAttribute.java

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/**
 *  Copyright 2012 Rainer Bieniek (Rainer.Bieniek@web.de)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 * File: org.bgp4j.netty.protocol.update.CommunitiesPathAttribute.java
 */
package io.netlibs.bgp.protocol.attributes;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import org.apache.commons.lang3.builder.CompareToBuilder;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.lang3.builder.ToStringBuilder;

/**
 * Refactored by rjs, to remove 'special' first community.
 *
 */

public class CommunityPathAttribute extends PathAttribute {

    private List<CommunityMember> members = new LinkedList<CommunityMember>();

    public CommunityPathAttribute() {
        super(Category.OPTIONAL_TRANSITIVE);
    }

    public CommunityPathAttribute(final List<CommunityMember> members) {
        super(Category.OPTIONAL_TRANSITIVE);
        this.members.addAll(members);
    }

    /**
     * @return the members
     */
    public List<CommunityMember> getMembers() {
        return this.members;
    }

    /**
     * @param members
     *          the members to set
     */
    public void setMembers(final List<CommunityMember> members) {
        this.members = members;
    }

    public void addMember(CommunityMember member) {
        if (members == null) {
            this.members = new LinkedList<CommunityMember>();
        }
        this.members.add(member);
    }

    @Override
    protected PathAttributeType internalType() {
        return PathAttributeType.COMMUNITY;
    }

    @Override
    protected boolean subclassEquals(final PathAttribute obj) {
        final CommunityPathAttribute o = (CommunityPathAttribute) obj;

        final EqualsBuilder builder = (new EqualsBuilder()).append(this.getMembers().size(), o.getMembers().size());

        if (builder.isEquals()) {
            final Iterator<CommunityMember> lit = this.getMembers().iterator();
            final Iterator<CommunityMember> rit = o.getMembers().iterator();

            while (lit.hasNext()) {
                builder.append(lit.next(), rit.next());
            }
        }

        return builder.isEquals();
    }

    @Override
    protected int subclassHashCode() {
        final HashCodeBuilder builder = (new HashCodeBuilder());
        final Iterator<CommunityMember> it = this.getMembers().iterator();

        while (it.hasNext()) {
            builder.append(it.next());
        }

        return builder.toHashCode();
    }

    @Override
    protected int subclassCompareTo(final PathAttribute obj) {
        final CommunityPathAttribute o = (CommunityPathAttribute) obj;
        final CompareToBuilder builder = (new CompareToBuilder()).append(this.getMembers().size(),
                o.getMembers().size());

        if (builder.toComparison() == 0) {
            final Iterator<CommunityMember> lit = this.getMembers().iterator();
            final Iterator<CommunityMember> rit = o.getMembers().iterator();

            while (lit.hasNext()) {
                builder.append(lit.next(), rit.next());
            }
        }

        return builder.toComparison();
    }

    @Override
    protected ToStringBuilder subclassToString() {
        final ToStringBuilder builder = new ToStringBuilder(this);

        for (final CommunityMember c : this.members) {
            builder.append("member", c);
        }

        return builder;
    }

    @Override
    public <R> R apply(PathAttributeVisitor<R> visitor) {
        return visitor.visitCommunityPathAttribute(this);
    }

}