package at.gv.egovernment.moa.spss.server.config;

import java.util.Iterator;
import java.util.Set;

/**
 * A collection of <code>KeyGroupEntry</code>s with its own ID.
 * 
 * @author Sven Aigner
 * @author Patrick Peck
 * @version $Id$
 */
public class KeyGroup {

  /** The keys belonging to this key group. */
  private Set keyGroupEntries;
  /** The key group ID. */
  private String id;

  /**
   * Create a <code>KeyGroup</code>.
   * 
   * @param id The ID of this <code>KeyGroup</code>.
   * @param keyGroupEntries The keys belonging to this <code>KeyGroup</code>.
   */
  public KeyGroup(String id, Set keyGroupEntries) {
    this.id = id;
    this.keyGroupEntries = keyGroupEntries;
  }

  /**
   * Return the <code>KeyEntry</code>s contained in this <code>KeyGroup</code>.
   * 
   * @return The <code>KeyEntry</code>s contained in this <code>KeyGroup</code>.
   */
  public Set getKeyGroupEntries() {
    return keyGroupEntries;
  }

  /**
   * Return the ID of this <code>KeyGroup</code>.
   * 
   * @return The <code>KeyGroup</code> ID.
   */
  public String getId() {
    return id;
  }

  /** 
   * Return a <code>String</code> representation of this <code>KeyGroup</code>.
   * 
   * @return The <code>String</code> representation.
   * @see java.lang.Object#toString()
   */
  public String toString() {
    StringBuffer sb = new StringBuffer();
    Iterator i;

    if (getKeyGroupEntries() != null) {
      i = getKeyGroupEntries().iterator();

      while (i.hasNext()) {
        sb.append(" " + i.next());
      }
    }
    return "(KeyGroup - ID:" + id + " " + sb.toString() + ")";
  }

}