002The contents of this file are subject to the Mozilla Public License Version 1.1 
003(the "License"); you may not use this file except in compliance with the License. 
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006WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the 
007specific language governing rights and limitations under the License. 
009The Original Code is "Composite.java".  Description: 
010"Represents the category of HL7 data types that contain more than one component (e.g" 
012The Initial Developer of the Original Code is University Health Network. Copyright (C) 
0132001.  All Rights Reserved. 
015Contributor(s): ______________________________________. 
017Alternatively, the contents of this file may be used under the terms of the 
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024this file under either the MPL or the GPL. 
028package ca.uhn.hl7v2.model;
031 * <p>Represents the category of HL7 data types that contain more than one component (e.g. CE).
032 * Implementing classes (i.e. composite data types) should initialize their components
033 * either when they are initialized or when they are first accessed.  Only leaf values
034 * (values of primitives) should ever be returned as null.</p>
035 * @author Bryan Tripp (bryan_tripp@sourceforge.net)
036 */
037public interface Composite extends Type {
039  /**
040   * Returns an array containing the components of this field.
041   *
042   * @return array of components of this composite type
043   */
044  public Type[] getComponents();
046  /**
047   * Returns the single component of this composite at the specified position (starting at 0).
048   *
049   * @param number index of the component to be retrieved (zero-based)
050   * @return component at this index
051   * @throws DataTypeException
052   */
053  public Type getComponent(int number) throws DataTypeException;