de.mrapp.parser.feed.common.datastructure.AttributeNode Maven / Gradle / Ivy

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/*
 * JavaFeedParserCommon Copyright 2013-2014 Michael Rapp
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see . 
 */
package de.mrapp.parser.feed.common.datastructure;

import static de.mrapp.parser.feed.common.util.Condition.ensureNotNull;

/**
 * A node, which represents an attribute of a feed's XML structure.
 * 
 * @author Michael Rapp
 * 
 * @since 1.0.0
 */
public class AttributeNode extends AbstractNode implements Attribute {

	/**
	 * The constant serial version UID.
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * The attribute's value.
	 */
	private String value;

	/**
	 * Creates a new node, which represents an attribute of a feed's XML
	 * structure. The attribute's value is an empty string by default.
	 * 
	 * @param name
	 *            The attribute's name as a {@link String}. The name may neither
	 *            be null, nor empty
	 */
	public AttributeNode(final String name) {
		super(name);
		setValue("");
	}

	@Override
	public final String getValue() {
		return value;
	}

	/**
	 * Sets the attribute's value.
	 * 
	 * @param value
	 *            The value, which should be set, as a {@link String}. The value
	 *            may not be null
	 */
	public final void setValue(final String value) {
		ensureNotNull(value, "The value may not be null");
		this.value = value;
	}

	@Override
	public final Attribute clone() throws CloneNotSupportedException {
		AttributeNode clonedAttributeNode = new AttributeNode(getName());
		clonedAttributeNode.setValue(getValue());
		clonedAttributeNode.setNamespace(getNamespace().clone());
		return clonedAttributeNode;
	}

	@Override
	public final String toString() {
		return "AttributeNode [name=" + getName() + ", value=" + value
				+ ", namespace=" + getNamespace() + "]";
	}

	@Override
	public final int hashCode() {
		final int prime = 31;
		int result = super.hashCode();
		result = prime * result + value.hashCode();
		return result;
	}

	@Override
	public final boolean equals(final Object obj) {
		if (this == obj)
			return true;
		if (!super.equals(obj))
			return false;
		AttributeNode other = (AttributeNode) obj;
		if (!value.equals(other.value))
			return false;
		return true;
	}

}