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package org.bsc.bean;


/**
 *
 * class for support of composite primary key
 *
 * @author Bartolomeo Sorrentino
 * @version 1.3
 */

public class PrimaryKey {
  private java.util.ArrayList keys;

  protected PrimaryKey() {
    keys = new java.util.ArrayList();
  }

  /**
   *
   */
  public PropertyDescriptorPK get( int index ) {
    return keys.get(index);
  }

  /**
   *
   */
  public int getKeyCount() {
    return keys.size();
  }

  protected void add( PropertyDescriptorPK pk ) {
    keys.add(pk);
  }

  /**
   * create a param list using primary key
   * NB
   *    * last character is a comma
   * 
   *
   * @param sb string buffer to append result
   * @return
   */
  protected StringBuilder appendToPropertyValues( StringBuilder sb ) {

    for( int i=0; i