/*
 * IdentifiableBase.java Created on 7. duben 2004, 18:46
 */
package net.sf.tomp.general;

/**
 * Base class for identifiable objects, overrides equals(), hashCode()
 * in order to test equality
 *  
 * @author tomp
 */
public class IdentifiableBase implements Identifiable {
    private String id;

    /** Creates a new instance of IdentifiableBase */
    public IdentifiableBase(String i) {
        if ((i == null) || (i.length() == 0)) {
            throw new IllegalArgumentException("Cannot create "
                    + getClass().getName() + " with id==null or empty");
        }

        id = i;
    }

   
    /** @return the ID of the object */
    public String getId() {
        return id;
    }

    /** sets the ID to the object */
    public void setId(String s) {
        id = s;
    }

    public int hashCode() {
        return id.hashCode();
    }

    /** Compares objects on the IDs. */
    public boolean equals(Object o) {
        if (o instanceof IdentifiableBase) {
            IdentifiableBase ui = (IdentifiableBase) o;

            return id.equals(ui.getId());
        } else {
            return false;
        }
    }
}