?? beanshellcondition.java
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/* * Copyright (c) 2002-2003 by OpenSymphony * All rights reserved. */package com.opensymphony.workflow.util.beanshell;import bsh.EvalError;import bsh.Interpreter;import bsh.TargetError;import com.opensymphony.module.propertyset.PropertySet;import com.opensymphony.util.TextUtils;import com.opensymphony.workflow.*;import com.opensymphony.workflow.spi.WorkflowEntry;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import java.util.Map;/** * * @author Hani */public class BeanShellCondition implements Condition { //~ Static fields/initializers ///////////////////////////////////////////// private static final Log log = LogFactory.getLog(BeanShellCondition.class); //~ Methods //////////////////////////////////////////////////////////////// public boolean passesCondition(Map transientVars, Map args, PropertySet ps) throws WorkflowException { String script = (String) args.get(AbstractWorkflow.BSH_SCRIPT); WorkflowContext context = (WorkflowContext) transientVars.get("context"); WorkflowEntry entry = (WorkflowEntry) transientVars.get("entry"); Interpreter i = new Interpreter(); ClassLoader loader = Thread.currentThread().getContextClassLoader(); try { if (loader != null) { i.setClassLoader(loader); } i.set("entry", entry); i.set("context", context); i.set("transientVars", transientVars); i.set("propertySet", ps); i.set("jn", transientVars.get("jn")); Object o = i.eval(script); if (o == null) { return false; } else { return TextUtils.parseBoolean(o.toString()); } } catch (TargetError targetError) { if (targetError.getTarget() instanceof WorkflowException) { throw (WorkflowException) targetError.getTarget(); } else { String message = "Could not execute BeanShell script"; throw new WorkflowException(message, targetError.getTarget()); } } catch (EvalError e) { String message = "Could not execute BeanShell script"; log.error(message, e); throw new WorkflowException(message, e); } finally { if (loader != null) { i.setClassLoader(null); } } }}
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