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1
5 package com.opensymphony.workflow.util.bsf;
6
7 import com.ibm.bsf.BSFEngine;
8 import com.ibm.bsf.BSFManager;
9
10 import com.opensymphony.module.propertyset.PropertySet;
11
12 import com.opensymphony.util.TextUtils;
13
14 import com.opensymphony.workflow.AbstractWorkflow;
15 import com.opensymphony.workflow.InvalidInputException;
16 import com.opensymphony.workflow.Validator;
17 import com.opensymphony.workflow.WorkflowContext;
18 import com.opensymphony.workflow.WorkflowException;
19 import com.opensymphony.workflow.spi.WorkflowEntry;
20
21 import java.util.Map  ;
22
23
24
30 public class BSFValidator implements Validator {
31
33 public void validate(Map transientVars, Map args, PropertySet ps) throws WorkflowException {
34 String language = (String ) args.get(AbstractWorkflow.BSF_LANGUAGE);
35 String source = (String ) args.get(AbstractWorkflow.BSF_SOURCE);
36 int row = TextUtils.parseInt((String ) args.get(AbstractWorkflow.BSF_ROW));
37 int col = TextUtils.parseInt((String ) args.get(AbstractWorkflow.BSF_COL));
38 String script = (String ) args.get(AbstractWorkflow.BSF_SCRIPT);
39
40 WorkflowContext context = (WorkflowContext) transientVars.get("context");
41 WorkflowEntry entry = (WorkflowEntry) transientVars.get("entry");
42
43 BSFManager mgr = new BSFManager();
44 ClassLoader loader = Thread.currentThread().getContextClassLoader();
45
46 if (loader != null) {
47 mgr.setClassLoader(loader);
48 }
49
50 mgr.registerBean("entry", entry);
51 mgr.registerBean("context", context);
52 mgr.registerBean("transientVars", transientVars);
53 mgr.registerBean("propertySet", ps);
54
55 try {
56 BSFEngine engine = mgr.loadScriptingEngine(language);
57 Object o = engine.eval(source, row, col, script);
58
59 if (o != null) {
60 throw new InvalidInputException(o);
61 }
62 } catch (Exception e) {
63 String message = "Could not execute BSF validator";
64 throw new WorkflowException(message, e);
65 }
66 }
67 }
68 |
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