/* * Copyright (c) 2002-2003 by OpenSymphony * All rights reserved. */package com.opensymphony.workflow.util;import com.opensymphony.module.propertyset.PropertySet;import com.opensymphony.workflow.FunctionProvider;import com.opensymphony.workflow.WorkflowException;import com.opensymphony.workflow.spi.Step;import java.util.Collection;import java.util.Map;/** * @author hani Date: Feb 17, 2005 Time: 3:56:57 PM */public class VerifyCurrentSteps implements FunctionProvider {    //~ Methods ////////////////////////////////////////////////////////////////    public void execute(Map transientVars, Map args, PropertySet ps) throws WorkflowException {        Collection currentSteps = (Collection) transientVars.get("currentSteps");        if (currentSteps.size() != 1) {            throw new WorkflowException("Expected 1 step to be in currentSteps, instead found " + currentSteps.size());        }        int expectedId = Integer.parseInt((String) args.get("step.id"));        Step step = (Step) currentSteps.iterator().next();        if (step.getStepId() != expectedId) {            throw new WorkflowException("Expected step id " + expectedId + " in prefunction, instead found id " + step.getStepId());        }    }}