Source for file Expression.php

<?php 
 
/**
 * Expression identifies an input condition that needs to be met before a Step
 * can proceed.
 * 
 * <p>
 * OSID Version: 2.0
 * </p>
 * 
 * <p>
 * Licensed under the {@link org.osid.SidImplementationLicenseMIT MIT}
 * O.K.I&#46; OSID Definition License}.
 * </p>
 * 
 * @package org.osid.workflow
 */
class Expression
{
    /**
     * Get the Type of this Expression.
     *  
     * @return object Type 
     * 
     * @throws object WorkflowException An exception with one of the
     *          following messages defined in
     *          org.osid.workflow.WorkflowException may be thrown:  {@link }
     *          org.osid.workflow.WorkflowException#OPERATION_FAILED
     *          OPERATION_FAILED}, {@link }
     *          org.osid.workflow.WorkflowException#PERMISSION_DENIED
     *          PERMISSION_DENIED}, {@link }
     *          org.osid.workflow.WorkflowException#CONFIGURATION_ERROR
     *          CONFIGURATION_ERROR}, {@link }
     *          org.osid.workflow.WorkflowException#UNIMPLEMENTED
     *          UNIMPLEMENTED}
     * 
     * @access public
     */
    function getType () { 
        die ("Method <b>".__FUNCTION__."()</b> declared in interface<b> ".__CLASS__."</b> has not been overloaded in a child class."); 
    } 
 
    /**
     * Get the description of this Expression.
     *  
     * @return string 
     * 
     * @throws object WorkflowException An exception with one of the
     *          following messages defined in
     *          org.osid.workflow.WorkflowException may be thrown:  {@link }
     *          org.osid.workflow.WorkflowException#OPERATION_FAILED
     *          OPERATION_FAILED}, {@link }
     *          org.osid.workflow.WorkflowException#PERMISSION_DENIED
     *          PERMISSION_DENIED}, {@link }
     *          org.osid.workflow.WorkflowException#CONFIGURATION_ERROR
     *          CONFIGURATION_ERROR}, {@link }
     *          org.osid.workflow.WorkflowException#UNIMPLEMENTED
     *          UNIMPLEMENTED}
     * 
     * @access public
     */
    function getDescription () { 
        die ("Method <b>".__FUNCTION__."()</b> declared in interface<b> ".__CLASS__."</b> has not been overloaded in a child class."); 
    } 
 
    /**
     * Get the DisplayName of this Expression.
     *  
     * @return string 
     * 
     * @throws object WorkflowException An exception with one of the
     *          following messages defined in
     *          org.osid.workflow.WorkflowException may be thrown:  {@link }
     *          org.osid.workflow.WorkflowException#OPERATION_FAILED
     *          OPERATION_FAILED}, {@link }
     *          org.osid.workflow.WorkflowException#PERMISSION_DENIED
     *          PERMISSION_DENIED}, {@link }
     *          org.osid.workflow.WorkflowException#CONFIGURATION_ERROR
     *          CONFIGURATION_ERROR}, {@link }
     *          org.osid.workflow.WorkflowException#UNIMPLEMENTED
     *          UNIMPLEMENTED}
     * 
     * @access public
     */
    function getDisplayName () { 
        die ("Method <b>".__FUNCTION__."()</b> declared in interface<b> ".__CLASS__."</b> has not been overloaded in a child class."); 
    } 
}
 
?>