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1
5 package com.opensymphony.workflow.util.beanshell;
6
7 import bsh.Interpreter;
8 import bsh.TargetError;
9
10 import com.opensymphony.module.propertyset.PropertySet;
11
12 import com.opensymphony.workflow.*;
13 import com.opensymphony.workflow.spi.WorkflowEntry;
14
15 import org.apache.commons.logging.Log;
16 import org.apache.commons.logging.LogFactory;
17
18 import java.util.Map  ;
19
20
21
27 public class BeanShellValidator implements Validator {
28
30 private static final Log log = LogFactory.getLog(BeanShellValidator.class);
31
32
34 public void validate(Map transientVars, Map args, PropertySet ps) throws WorkflowException {
35 Interpreter i = new Interpreter();
36 ClassLoader loader = Thread.currentThread().getContextClassLoader();
37
38 try {
39 String contents = (String ) args.get(AbstractWorkflow.BSH_SCRIPT);
40
41 WorkflowContext context = (WorkflowContext) transientVars.get("context");
42 WorkflowEntry entry = (WorkflowEntry) transientVars.get("entry");
43
44 if (loader != null) {
45 i.setClassLoader(loader);
46 }
47
48 i.set("entry", entry);
49 i.set("context", context);
50 i.set("transientVars", transientVars);
51 i.set("propertySet", ps);
52
53 Object o = i.eval(contents);
54
55 if (o != null) {
56 throw new InvalidInputException(o);
57 }
58 } catch (TargetError e) {
59 if (e.getTarget() instanceof WorkflowException) {
60 throw (WorkflowException) e.getTarget();
61 } else {
62 throw new WorkflowException("Unexpected exception in beanshell validator script:" + e.getMessage(), e);
63 }
64 } catch (Exception e) {
65 String message = "Error executing beanshell validator";
66 throw new WorkflowException(message, e);
67 } finally {
68 if (loader != null) {
69 i.setClassLoader(null);
70 }
71 }
72 }
73 }
74 |
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