org.obm.push.bean.ServerId.java Source code

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Here is the source code for org.obm.push.bean.ServerId.java

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/* ***** BEGIN LICENSE BLOCK *****
 * 
 * Copyright (C) 2011-2014  Linagora
 *
 * This program 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, provided you comply 
 * with the Additional Terms applicable for OBM connector by Linagora 
 * pursuant to Section 7 of the GNU Affero General Public License, 
 * subsections (b), (c), and (e), pursuant to which you must notably (i) retain 
 * the Message sent thanks to OBM, Free Communication by Linagora? 
 * signature notice appended to any and all outbound messages 
 * (notably e-mail and meeting requests), (ii) retain all hypertext links between 
 * OBM and obm.org, as well as between Linagora and linagora.com, and (iii) refrain 
 * from infringing Linagora intellectual property rights over its trademarks 
 * and commercial brands. Other Additional Terms apply, 
 * see <http://www.linagora.com/licenses/> for more details. 
 *
 * This program 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 
 * and its applicable Additional Terms for OBM along with this program. If not, 
 * see <http://www.gnu.org/licenses/> for the GNU Affero General Public License version 3 
 * and <http://www.linagora.com/licenses/> for the Additional Terms applicable to 
 * OBM connectors. 
 * 
 * ***** END LICENSE BLOCK ***** */
package org.obm.push.bean;

import java.io.Serializable;
import java.util.Iterator;
import java.util.NoSuchElementException;

import org.obm.push.exception.activesync.InvalidServerId;
import org.obm.push.protocol.bean.CollectionId;

import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterables;

public class ServerId implements Serializable {

    private static final String SERVER_ID_SEPARATOR = ":";

    public static ServerId of(String value) {
        Iterable<String> parts = Splitter.on(SERVER_ID_SEPARATOR).split(value);
        if (Iterables.size(parts) > 2) {
            throw new InvalidServerId("Too many parts for a serverId");
        }
        Iterator<String> iterator = parts.iterator();
        return of(getCollectionId(iterator, value), getItemId(iterator));
    }

    private static CollectionId getCollectionId(Iterator<String> iterator, String serverId) throws InvalidServerId {
        try {
            return CollectionId.of(iterator.next());
        } catch (NoSuchElementException e) {
            throw new InvalidServerId("serverId is invalid : " + serverId);
        } catch (NumberFormatException e) {
            throw new InvalidServerId("collectionId is not an integer", e);
        }
    }

    private static Integer getItemId(Iterator<String> iterator) throws InvalidServerId {
        if (iterator.hasNext()) {
            try {
                return Integer.valueOf(iterator.next());
            } catch (NumberFormatException e) {
                throw new InvalidServerId("itemId is not an integer", e);
            }
        } else {
            return null;
        }
    }

    public static ServerId of(CollectionId collectionId, Integer ItemId) {
        if (collectionId == null) {
            throw new InvalidServerId("collectionId must not be null");
        }
        return new ServerId(collectionId, ItemId);
    }

    private final CollectionId collectionId;
    private final Integer itemId;

    private ServerId(CollectionId collectionId, Integer itemId) {
        this.collectionId = collectionId;
        this.itemId = itemId;
    }

    public CollectionId getCollectionId() {
        return collectionId;
    }

    public Integer getItemId() {
        return itemId;
    }

    public boolean isItem() {
        return itemId != null;
    }

    public boolean belongsTo(CollectionId collectionId) {
        Preconditions.checkNotNull(collectionId);
        return this.collectionId.equals(collectionId);
    }

    @Override
    public final int hashCode() {
        return Objects.hashCode(collectionId, itemId);
    }

    @Override
    public final boolean equals(Object object) {
        if (object instanceof ServerId) {
            ServerId that = (ServerId) object;
            return Objects.equal(this.collectionId, that.collectionId) && Objects.equal(this.itemId, that.itemId);
        }
        return false;
    }

    public String asString() {
        if (isItem()) {
            return collectionId.asString() + SERVER_ID_SEPARATOR + itemId;
        } else {
            return collectionId.asString();
        }
    }

    @Override
    public String toString() {
        return Objects.toStringHelper(this).add("collectionId", collectionId).add("itemId", itemId).toString();
    }

}