public ReportPropertiesList(ReportProperties base) 
{
    if (base == null)
    {
      throw new NullPointerException();
    }
    this.base = base;
    this.columns = new ArrayList();
    final Iterator keys = base.keys();
    while (keys.hasNext())
    {
      final String key = (String) keys.next();
      if (base.isMarked(key))
      {
        columns.add(key);
      }
    }
}

Creates a list of report properties. Searches all marked properties and adds them to the ReportPropertyList. The property-values remain in the original ReportProperties-collection, all queries to this list are forwarded to that base-object.

Parameters:

base - the underlying properties.

 public Object get(int column) 
{
    return (base.get(getColumnName(column)));
}

Returns the value in the specified column.

 public int getColumnCount() 
{
    return columns.size();
}

Returns the number of columns.

 public String getColumnName(int column) 
{
    return (String) columns.get(column);
}

Returns the name of the specified column.

 public String toString() 
{
    final StringBuffer b = new StringBuffer();
    b.append("ReportPropertiesList: ");
    b.append(columns);
    return b.toString();
}

Returns a string describing the object.