make ShardSet serializable

package com.inteligr8.alfresco.asie.model;

import java.io.Serializable;

import java.util.HashMap;

import java.util.Map;

import java.util.Map.Entry;

import org.alfresco.repo.index.shard.ShardState;

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

public class ShardSet {

public class ShardSet implements Serializable {

	private static final long serialVersionUID = -8891094367429601316L;

	/**

	 * Examples:

	 * DATE;key:cm:created;date.grouping:3

	 * PROPERTY;key:cm:created;regex:^d{4}

	 */

	private final Pattern shardSetPattern = Pattern.compile("([A-Z]+)(;fulltext)?(;([a-z]+):([^;]+))?(;([a-z]+):([^;]+))?");

	private static final Pattern shardSetPattern = Pattern.compile("([A-Z]+)(;fulltext)?(;([a-z]+):([^;]+))?(;([a-z]+):([^;]+))?");

	private final ShardMethodEnum method;

	private final boolean hasContent;

	private final Map<String, String> config;

	private Integer hash;

	private transient Integer hash;

	public ShardSet(Floc floc, ShardState anyShardNode) {

		this.method = floc.getShardMethod();

	}

	public ShardSet(String shardSetSpec) {

    	Matcher matcher = this.shardSetPattern.matcher(shardSetSpec);

    	Matcher matcher = shardSetPattern.matcher(shardSetSpec);

    	if (!matcher.find())

    		throw new IllegalArgumentException("The shard set '" + shardSetSpec + "' is not properly formatted");