com.anrisoftware.sscontrol.dhclient.statements.RequestDeclarations.java Source code

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Here is the source code for com.anrisoftware.sscontrol.dhclient.statements.RequestDeclarations.java

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/*
 * Copyright 2012-2015 Erwin Mller <erwin.mueller@deventm.org>
 *
 * This file is part of sscontrol-dhclient.
 *
 * sscontrol-dhclient is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Affero General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * sscontrol-dhclient is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with sscontrol-dhclient. If not, see <http://www.gnu.org/licenses/>.
 */
package com.anrisoftware.sscontrol.dhclient.statements;

import static java.util.Collections.unmodifiableList;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import javax.inject.Inject;

import org.apache.commons.lang3.builder.ToStringBuilder;

/**
 * Collection of request declarations.
 * 
 * @author Erwin Mueller, erwin.mueller@deventm.org
 * @since 1.0
 */
@SuppressWarnings("serial")
public class RequestDeclarations implements Serializable {

    private final List<Declaration> requests;

    private final List<Declaration> removedRequests;

    @Inject
    private RequestDeclarationsLogger log;

    @Inject
    private DeclarationFactory declarationFactory;

    @Inject
    RequestDeclarations() {
        this.requests = new ArrayList<Declaration>();
        this.removedRequests = new ArrayList<Declaration>();
    }

    /**
     * Adds new request.
     * 
     * @param decl
     *            the request declaration.
     */
    public void add(String decl) {
        if (decl.startsWith("!")) {
            remove(decl.substring(1));
        } else {
            Declaration request = declarationFactory.create(decl);
            requests.add(request);
            log.reguestAdded(this, request);
        }
    }

    public void add(Declaration request) {
        if (!removedRequests.contains(request)) {
            if (!requests.contains(request)) {
                requests.add(request);
            }
        }
    }

    /**
     * Removes the specified request name.
     * 
     * @param decl
     *            the request declaration.
     */
    public void remove(String decl) {
        Declaration req = declarationFactory.create(decl);
        removedRequests.add(req);
        if (requests.remove(req)) {
            log.reguestRemoved(this, req);
        } else {
            log.noRequestFoundForRemoval(this, req);
        }
    }

    public List<Declaration> getRequests() {
        return unmodifiableList(requests);
    }

    @Override
    public String toString() {
        return new ToStringBuilder(this).append(requests).toString();
    }

}