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1
4 package nl.justobjects.pushlet.core;
5
6 import java.io.Serializable  ;
7 import java.util.HashMap ;
8 import java.util.Iterator ;
9 import java.util.Map ;
10
11
17 public class Event implements Protocol, Serializable {
18
19 protected Map attributes = new HashMap (3);
20
21 public Event(String anEventType) {
22 this(anEventType, null);
23 }
24
25 public Event(String anEventType, Map theAttributes) {
26
27 if (theAttributes != null) {
28 setAttrs(theAttributes);
29 }
30
31 setField(P_EVENT, anEventType);
33
34 setField(P_TIME, System.currentTimeMillis() / 1000);
36 }
37
38 public Event(Map theAttributes) {
39 if (!theAttributes.containsKey(P_EVENT)) {
40 throw new IllegalArgumentException (P_EVENT + " not found in attributes");
41 }
42 setAttrs(theAttributes);
43 }
44
45 public static Event createDataEvent(String aSubject) {
46 return createDataEvent(aSubject, null);
47 }
48
49 public static Event createDataEvent(String aSubject, Map theAttributes) {
50 Event dataEvent = new Event(E_DATA, theAttributes);
51 dataEvent.setField(P_SUBJECT, aSubject);
52 return dataEvent;
53 }
54
55 public String getEventType() {
56 return getField(P_EVENT);
57 }
58
59 public String getSubject() {
60 return getField(P_SUBJECT);
61 }
62
63 public void setField(String name, String value) {
64 attributes.put(name, value);
65 }
66
67 public void setField(String name, int value) {
68 attributes.put(name, value + "");
69 }
70
71 public void setField(String name, long value) {
72 attributes.put(name, value + "");
73 }
74
75 public String getField(String name) {
76 return (String ) attributes.get(name);
77 }
78
79
80 public String getField(String name, String aDefault) {
81 String result = getField(name);
82 return result == null ? aDefault : result;
83 }
84
85 public Iterator getFieldNames() {
86 return attributes.keySet().iterator();
87 }
88
89 public String toString() {
90 return attributes.toString();
91 }
92
93
94 public String toQueryString() {
95 String queryString = "";
96 String amp = "";
97 for (Iterator iter = getFieldNames(); iter.hasNext();) {
98 String nextAttrName = (String ) iter.next();
99 String nextAttrValue = getField(nextAttrName);
100 queryString = queryString + amp + nextAttrName + "=" + nextAttrValue;
101 amp = "&";
103 }
104
105 return queryString;
106 }
107
108 public String toXML() {
109 String xmlString = "<event ";
110 for (Iterator iter = getFieldNames(); iter.hasNext();) {
111 String nextAttrName = (String ) iter.next();
112 String nextAttrValue = getField(nextAttrName);
113 xmlString = xmlString + nextAttrName + "=\"" + nextAttrValue + "\" ";
114 }
115
116 xmlString += "/>";
117 return xmlString;
118 }
119
120 public Object clone() {
121 return new Event(attributes);
123 }
124
125
126 private void setAttrs(Map theAttributes) {
127 attributes.putAll(theAttributes);
128 }
129 }
130
131
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