/*
 * Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
 * 
 * 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.
 */
package li.strolch.model;

import java.text.MessageFormat;

import li.strolch.exception.StrolchException;
import li.strolch.model.Locator.LocatorBuilder;
import li.strolch.utils.helper.StringHelper;

/**
 * @author Robert von Burg <eitch@eitchnet.ch>
 */
public abstract class AbstractStrolchElement implements StrolchElement {

	private static final long serialVersionUID = 0L;

	protected long dbid = Long.MAX_VALUE;
	protected String id;
	protected String name;

	/**
	 * Empty constructor - for marshalling only!
	 */
	public AbstractStrolchElement() {
		super();
	}

	/**
	 * Default constructor
	 *
	 * @param id
	 *            id of this {@link StrolchElement}
	 * @param name
	 *            name of this {@link StrolchElement}
	 */
	public AbstractStrolchElement(String id, String name) {
		setId(id);
		setName(name);
	}

	@Override
	public long getDbid() {
		return this.dbid;
	}

	@Override
	public void setDbid(long dbid) {
		this.dbid = dbid;
	}

	@Override
	public String getId() {
		return this.id;
	}

	@Override
	public void setId(String id) {
		if (StringHelper.isEmpty(id)) {
			String msg = "The id may never be empty for {0}";
			msg = MessageFormat.format(msg, getClass().getSimpleName());
			throw new StrolchException(msg);
		}
		this.id = id;
	}

	@Override
	public String getName() {
		return this.name;
	}

	@Override
	public void setName(String name) {
		if (StringHelper.isEmpty(name)) {
			String msg = "The name may never be empty for {0} {1}";
			msg = MessageFormat.format(msg, getClass().getSimpleName(), getLocator());
			throw new StrolchException(msg);
		}
		this.name = name;
	}

	/**
	 * Used to build a {@link Locator} for this {@link StrolchElement}. It must be implemented by the concrete
	 * implemented as parents must first add their {@link Locator} information
	 *
	 * @param locatorBuilder
	 *            the {@link LocatorBuilder} to which the {@link StrolchElement} must add its locator information
	 */
	protected abstract void fillLocator(LocatorBuilder locatorBuilder);

	/**
	 * fills the {@link StrolchElement} clone with the id, name and type
	 *
	 * @param clone
	 */
	protected void fillClone(StrolchElement clone) {
		clone.setId(getId());
		clone.setName(getName());
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((this.id == null) ? 0 : this.id.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		AbstractStrolchElement other = (AbstractStrolchElement) obj;
		if (this.id == null) {
			if (other.id != null) {
				return false;
			}
		} else if (!this.id.equals(other.id)) {
			return false;
		}
		return true;
	}

	@Override
	public abstract String toString();
}