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1
5 package com.opensymphony.workflow.util.bsf;
6
7 import com.ibm.bsf.BSFEngine;
8 import com.ibm.bsf.BSFException;
9 import com.ibm.bsf.BSFManager;
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 BSFFunctionProvider implements FunctionProvider {
31
33 private static final Log log = LogFactory.getLog(BSFFunctionProvider.class);
34
35
37 public void execute(Map transientVars, Map args, PropertySet ps) throws WorkflowException {
38 String language = (String ) args.get(AbstractWorkflow.BSF_LANGUAGE);
39 String source = (String ) args.get(AbstractWorkflow.BSF_SOURCE);
40 int row = TextUtils.parseInt((String ) args.get(AbstractWorkflow.BSF_ROW));
41 int col = TextUtils.parseInt((String ) args.get(AbstractWorkflow.BSF_COL));
42 String script = (String ) args.get(AbstractWorkflow.BSF_SCRIPT);
43
44 WorkflowContext context = (WorkflowContext) transientVars.get("context");
45 WorkflowEntry entry = (WorkflowEntry) transientVars.get("entry");
46
47 BSFManager mgr = new BSFManager();
48 ClassLoader loader = Thread.currentThread().getContextClassLoader();
49
50 if (loader != null) {
51 mgr.setClassLoader(loader);
52 }
53
54 mgr.registerBean("entry", entry);
55 mgr.registerBean("context", context);
56 mgr.registerBean("transientVars", transientVars);
57 mgr.registerBean("propertySet", ps);
58
59 BSFEngine engine = null;
60
61 try {
62 engine = mgr.loadScriptingEngine(language);
63 } catch (BSFException e) {
64 String message = "Could not load scripting engine for BSF language: " + language;
65 throw new WorkflowException(message, e);
66 }
67
68 try {
69 engine.eval(source, row, col, script);
70 } catch (BSFException e) {
71 String message = "BSF script/function could not run";
72 throw new WorkflowException(message, e);
73 }
74 }
75 }
76 |
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