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1
5 package com.opensymphony.workflow.loader;
6
7 import com.opensymphony.workflow.InvalidWorkflowDescriptorException;
8 import com.opensymphony.workflow.util.Validatable;
9
10 import org.w3c.dom.Element  ;
11
12 import java.io.PrintWriter ;
13
14 import java.util.ArrayList ;
15 import java.util.List ;
16
17
18
24 public class JoinDescriptor extends AbstractDescriptor implements Validatable {
25
27 protected List conditions = new ArrayList ();
28 protected ResultDescriptor result;
29
30
32 public JoinDescriptor() {
33 }
34
35 public JoinDescriptor(Element join) {
36 init(join);
37 }
38
39
41 public List getConditions() {
42 return conditions;
43 }
44
45 public void setResult(ResultDescriptor result) {
46 this.result = result;
47 }
48
49 public ResultDescriptor getResult() {
50 return result;
51 }
52
53 public void validate() throws InvalidWorkflowDescriptorException {
54 ValidationHelper.validate(conditions);
55
56 if (result == null) {
57 throw new InvalidWorkflowDescriptorException("Join has no result");
58 }
59
60 result.validate();
61 }
62
63 public void writeXML(PrintWriter out, int indent) {
64 XMLUtil.printIndent(out, indent++);
65 out.println("<join id=\"" + getId() + "\">");
66
67 if (conditions.size() > 0) {
68 for (int i = 0; i < conditions.size(); i++) {
69 ConditionsDescriptor condition = (ConditionsDescriptor) conditions.get(i);
70 condition.writeXML(out, indent);
71 }
72 }
73
74 result.writeXML(out, indent);
75 XMLUtil.printIndent(out, --indent);
76 out.println("</join>");
77 }
78
79 protected void init(Element join) {
80 try {
81 setId(Integer.parseInt(join.getAttribute("id")));
82 } catch (Exception ex) {
83 throw new IllegalArgumentException ("Invalid join id value " + join.getAttribute("id"));
84 }
85
86 List conditionNodes = XMLUtil.getChildElements(join, "conditions");
88 int length = conditionNodes.size();
89
90 for (int i = 0; i < length; i++) {
91 Element condition = (Element ) conditionNodes.get(i);
92 ConditionsDescriptor conditionDescriptor = new ConditionsDescriptor(condition);
93 conditionDescriptor.setParent(this);
94 this.conditions.add(conditionDescriptor);
95 }
96
97 Element resultElement = XMLUtil.getChildElement(join, "unconditional-result");
99 result = new ResultDescriptor(resultElement);
100 result.setParent(this);
101 }
102 }
103 |
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