Transition


1   package org.enhydra.shark.xpdl.elements;
2   
3   import java.util.HashMap  ;
4   import java.util.Map  ;
5   
6   import org.enhydra.shark.xpdl.XMLAttribute;
7   import org.enhydra.shark.xpdl.XMLCollectionElement;
8   
9   /**
10   *  Represents coresponding element from XPDL schema.
11   * 
12   *  @author Sasa Bojanic
13   */
14  public class Transition extends XMLCollectionElement {
15  
16     protected transient Activity toActivity;
17     protected transient Activity fromActivity;
18     
19     public Transition (Transitions parent) {
20        super(parent, true);
21     }
22  
23     protected void fillStructure () {
24        XMLAttribute attrFrom=new XMLAttribute(this,"From", true); //required
25        XMLAttribute attrTo=new XMLAttribute(this,"To", true); //required
26        XMLAttribute attrName=new XMLAttribute(this,"Name", false);
27        Condition refCondition=new Condition(this); // min==0
28        Description refDescription=new Description(this); // min=0
29        ExtendedAttributes refExtendedAttributes=new ExtendedAttributes(this); // min=0
30  
31  
32        super.fillStructure();
33        add(attrName);
34        add(attrFrom);
35        add(attrTo);
36        add(refCondition);
37        add(refDescription);
38        add(refExtendedAttributes);
39     }
40  
41     public void initCaches () {
42        super.initCaches();
43        Activities acts;
44        if (getParent().getParent() instanceof WorkflowProcess) {
45           acts=((WorkflowProcess)getParent().getParent()).getActivities();
46        } else {
47           acts=((ActivitySet)getParent().getParent()).getActivities();
48        }
49        toActivity=acts.getActivity(getTo());
50        fromActivity=acts.getActivity(getFrom());      
51     }
52     
53     public void clearCaches () {
54        toActivity=null;
55        fromActivity=null;
56        super.clearCaches();
57     }
58     
59     public Activity getToActivity () {
60        if (!isReadOnly) {
61           throw new RuntimeException  ("This method can be used only in read-only mode!");
62        }
63        return toActivity;
64     }
65        
66     public Activity getFromActivity () {
67        if (!isReadOnly) {
68           throw new RuntimeException  ("This method can be used only in read-only mode!");
69        }
70        return fromActivity;
71     }
72  
73     public String   getFrom() {
74        return get("From").toValue();
75     }
76     public void setFrom(String   from) {
77        set("From",from);
78     }
79     public String   getTo() {
80        return get("To").toValue();
81     }
82     public void setTo(String   to) {
83        set("To",to);
84     }
85     public String   getName() {
86        return get("Name").toValue();
87     }
88     public void setName(String   name) {
89        set("Name",name);
90     }
91     public String   getDescription() {
92        return get("Description").toValue();
93     }
94     public void setDescription(String   description) {
95        set("Description",description);
96     }
97     public Condition getCondition() {
98        return (Condition)get("Condition");
99     }
100    public ExtendedAttributes getExtendedAttributes() {
101       return (ExtendedAttributes)get("ExtendedAttributes");
102    }
103 }
104
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