package ever.workflowRepresentation;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;

/**
 * Option obejcts are used in combination with an XOR element. Every possible disjunctiv path of an XOR corresponds to an 
 * Option. The option contains the condition and the Sequence(= the path) to be executed.
 * @author Pol Schumacher, Wirtschaftsinformatik, Institut fuer Informatik, Goethe Universitaet Frankfurt
 *
 */
public class Option {
	/**
	 * The sequence to be executed.
	 */
	private Sequence seq;
	/**
	 * The condition for the option.
	 */
	private String cond;
	
	/**
	 * 
	 * @param sequence The sequence of tasks that should be performed
	 * @param condition The condition that must be fulfilled to call sequence.
	 */
	public Option(Sequence seq, String cond)
	{
		this.seq=seq;
		this.cond=cond;
	}
	
	/**
	 * Return the sequence of the option.
	 * @return The sequence of the option
	 */
	public Sequence getSeq() {
		return seq;
	}
	
	/**
	 * Sets a new sequence to the option
	 * @param sequence 
	 */
	public void setSeq(Sequence seq) {
		this.seq = seq;
	}
	/**
	 * Get the condition of an option.
	 * @return condition
	 */
	public String getCond() {
		return cond;
	}
	/**
	 * Set the condition of an option.
	 * @param condition
	 */
	public void setCond(String cond) {
		this.cond = cond;
	}
	/**
	 * Write the xml representation of an option to the XMLStreamWriter
	 * @param writer
	 * @throws XMLStreamException
	 */
	public void exportWf2Xml(XMLStreamWriter writer) throws XMLStreamException
	{
		seq.exportWf2Xml(writer, this.cond);
		
	}
//	/**
//	 * Write the xml representation of an option to the XMLStreamWriter. With special adaptations for the artificially generated workflow
//	 * @param writer
//	 * @throws XMLStreamException
//	 */
//	public void exportWf2XmlArti(XMLStreamWriter writer) throws XMLStreamException
//	{
//		seq.exportWf2XmlArti(writer);
//		
//	}
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((cond == null) ? 0 : cond.hashCode());
		result = prime * result + ((seq == null) ? 0 : seq.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;
		Option other = (Option) obj;
		if (cond == null) {
			if (other.cond != null)
				return false;
		} else if (!cond.equals(other.cond))
			return false;
		if (seq == null) {
			if (other.seq != null)
				return false;
		} else if (!seq.equals(other.seq))
			return false;
		return true;
	}
	
	
}