|
1
5 package com.opensymphony.workflow.util.beanshell;
6
7 import bsh.EvalError;
8 import bsh.Interpreter;
9 import bsh.TargetError;
10
11 import com.opensymphony.module.propertyset.PropertySet;
12
13 import com.opensymphony.util.TextUtils;
14
15 import com.opensymphony.workflow.*;
16 import com.opensymphony.workflow.spi.WorkflowEntry;
17
18 import org.apache.commons.logging.Log;
19 import org.apache.commons.logging.LogFactory;
20
21 import java.util.Map  ;
22
23
24
30 public class BeanShellCondition implements Condition {
31
33 private static final Log log = LogFactory.getLog(BeanShellCondition.class);
34
35
37 public boolean passesCondition(Map transientVars, Map args, PropertySet ps) throws WorkflowException {
38 String script = (String ) args.get(AbstractWorkflow.BSH_SCRIPT);
39
40 WorkflowContext context = (WorkflowContext) transientVars.get("context");
41 WorkflowEntry entry = (WorkflowEntry) transientVars.get("entry");
42
43 Interpreter i = new Interpreter();
44 ClassLoader loader = Thread.currentThread().getContextClassLoader();
45
46 try {
47 if (loader != null) {
48 i.setClassLoader(loader);
49 }
50
51 i.set("entry", entry);
52 i.set("context", context);
53 i.set("transientVars", transientVars);
54 i.set("propertySet", ps);
55 i.set("jn", transientVars.get("jn"));
56
57 Object o = i.eval(script);
58
59 if (o == null) {
60 return false;
61 } else {
62 return TextUtils.parseBoolean(o.toString());
63 }
64 } catch (TargetError targetError) {
65 if (targetError.getTarget() instanceof WorkflowException) {
66 throw (WorkflowException) targetError.getTarget();
67 } else {
68 String message = "Could not execute BeanShell script";
69 throw new WorkflowException(message, targetError.getTarget());
70 }
71 } catch (EvalError e) {
72 String message = "Could not execute BeanShell script";
73 log.error(message, e);
74 throw new WorkflowException(message, e);
75 } finally {
76 if (loader != null) {
77 i.setClassLoader(null);
78 }
79 }
80 }
81 }
82 |
Popular Tags |
Java API By Example, From Geeks To Geeks.