statuscondition.java

一个很好实用的工作流OSWORKFLOW开发例子.有着非常优秀的灵活性.

/*
 * Copyright (c) 2002-2003 by OpenSymphony
 * All rights reserved.
 */
package com.opensymphony.workflow.util;

import com.opensymphony.module.propertyset.PropertySet;

import com.opensymphony.util.TextUtils;

import com.opensymphony.workflow.*;
import com.opensymphony.workflow.spi.Step;
import com.opensymphony.workflow.spi.WorkflowEntry;
import com.opensymphony.workflow.spi.WorkflowStore;

import java.util.*;


/**
 * Simple utility condition that returns true if the current step's status is
 * the same as the required argument "status". Looks at ALL current steps unless
 * a stepId is given in the optional argument "stepId".
 *
 * @author <a href="mailto:[e-mail]">Pat Lightbody</a>
 */
public class StatusCondition implements Condition {
    //~ Methods ////////////////////////////////////////////////////////////////

    public boolean passesCondition(Map transientVars, Map args, PropertySet ps) throws StoreException {
        String status = TextUtils.noNull((String) args.get("status"));
        int stepId = 0;
        Object stepIdVal = args.get("stepId");

        if (stepIdVal != null) {
            try {
                stepId = Integer.parseInt(stepIdVal.toString());
            } catch (Exception ex) {
            }
        }

        WorkflowEntry entry = (WorkflowEntry) transientVars.get("entry");
        WorkflowStore store = (WorkflowStore) transientVars.get("store");
        List currentSteps = store.findCurrentSteps(entry.getId());

        if (stepId == 0) {
            for (Iterator iterator = currentSteps.iterator();
                    iterator.hasNext();) {
                Step step = (Step) iterator.next();

                if (status.equals(step.getStatus())) {
                    return true;
                }
            }
        } else {
            for (Iterator iterator = currentSteps.iterator();
                    iterator.hasNext();) {
                Step step = (Step) iterator.next();

                if (stepId == step.getStepId()) {
                    if (status.equals(step.getStatus())) {
                        return true;
                    }
                }
            }
        }

        return false;
    }
}