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1
4 package org.oddjob.designer.elements;
5
6 import java.io.ByteArrayOutputStream  ;
7 import java.io.PrintStream ;
8 import java.util.Date ;
9 import java.util.Observable ;
10 import java.util.Observer ;
11 import java.util.TimeZone ;
12
13 import org.oddjob.arooa.ArooaRuntime;
14 import org.oddjob.arooa.ArooaContext;
15 import org.oddjob.arooa.ArooaConstants;
16 import org.oddjob.arooa.RuntimeConfiguration;
17 import org.oddjob.arooa.handlers.DocumentStartHandler;
18 import org.oddjob.arooa.handlers.MainHandler;
19 import org.oddjob.designer.arooa.DesignParser;
20 import org.oddjob.designer.arooa.ElementWrapper;
21 import org.oddjob.designer.elements.date.TimeZoneAttribute;
22 import org.oddjob.designer.elements.schedule.ScheduleFactory;
23 import org.oddjob.designer.model.DesignDefinition;
24 import org.oddjob.designer.model.DesignElementAttribute;
25 import org.oddjob.designer.model.DesignElementType;
26 import org.oddjob.designer.model.ElementField;
27 import org.oddjob.designer.model.FieldGroup;
28 import org.oddjob.designer.model.MultiTypeTree;
29 import org.oddjob.designer.model.TextInput;
30 import org.oddjob.schedules.DateUtils;
31 import org.oddjob.schedules.Interval;
32 import org.oddjob.schedules.Schedule;
33 import org.oddjob.schedules.ScheduleContext;
34 import org.oddjob.schedules.ScheduleElement;
35 import org.oddjob.values.types.DateType;
36 import org.xml.sax.SAXParseException ;
37
38
41 public class ScheduleDE extends DesignElementAttribute {
42
43 public DesignDefinition detail() {
44 return new MultiTypeTree("Schedule", this)
45 .setDetail(new CheckSchedule().detail());
46 }
47
48 public String [] supportedTypes() {
49 return ScheduleFactory.allTypes();
50 }
51
52 public DesignElementType createType(String type) {
53 return ScheduleFactory.createType(type);
54 }
55
56 public ElementWrapper[] elements() {
57 return childElements();
58 }
59
60 public String toString() {
61 return "Schedule";
62 }
63
64
68 class CheckSchedule {
69 private DateDE date = new DateDE();
70 private TimeZoneAttribute timeZone = new TimeZoneAttribute();
71 private SimpleDE count = new SimpleDE();
72
73 private String results = "Change the date to check your schedule.";
74
75 private TextInput textInput = new TextInput("Results") {
76 public String getText() {
77 return results;
78 }
79 public void setText(String text) {
80 setChanged();
81 notifyObservers();
82 }
83 };
84
85 public CheckSchedule() {
86 count.attribute("10");
87 Observer observer = new Observer () {
88 public void update(Observable o, Object arg) {
89 Date d = null;
90 try {
91 DateType dateType = date.toType();
92 d = dateType.valueFor(Object .class);
93 } catch (Exception e) {
94 setResults(exceptionAsString(e));
95 return;
96 }
97 if (d == null) {
98 return;
99 }
100 int c = 0;
101 try {
102 c = Integer.parseInt(count.attribute());
103 } catch (NumberFormatException e) {
104 setResults(exceptionAsString(e));
105 return;
106 }
107 TimeZone tz = TimeZone.getDefault();
108 if (timeZone.attribute() != null) {
109 tz = TimeZone.getTimeZone(timeZone.attribute());
110 }
111 try {
112 setResults(scheduleDump(d, c, tz));
113 } catch (SAXParseException e) {
114 setResults(exceptionAsString(e));
115 return;
116 }
117 }
118 };
119 date.addObserver(observer);
120 timeZone.addObserver(observer);
121 count.addObserver(observer);
122 ScheduleDE.this.addObserver(observer);
123 }
124
125 void setResults(String results) {
126 this.results = results;
127 textInput.setText("");
128 }
129
130 public DesignDefinition detail() {
131 return new FieldGroup("Check Schedule")
132 .add(new ElementField("Date", date))
133 .add(new ElementField("Time Zone", timeZone))
134 .add(new ElementField("Number", count))
135 .add(textInput);
136 }
137
138 }
139
140 public Schedule toType() throws SAXParseException {
141
142 ScheduleElement scheduleElement = new ScheduleElement();
143
144 ArooaContext context = new ArooaContext();
145 RuntimeConfiguration rtc = new ArooaRuntime(
146 scheduleElement, "schedule", context);
147
148 context.set(ArooaConstants.CURRENTLY_CONFIGURING, rtc);
149
150 DesignParser dp = new DesignParser(context);
151 dp.parse("schedule", this, new MainHandler(
152 new DocumentStartHandler(scheduleElement)));
153
154 rtc.configure();
155
156 return scheduleElement;
157 }
158
159 String scheduleDump(Date testDate,
160 int occurrences, TimeZone timeZone)
161 throws SAXParseException {
162 Schedule schedule = null;
163 schedule = toType();
164
165 StringBuffer buffer = new StringBuffer ();
166 ScheduleContext context = new ScheduleContext(
167 testDate, timeZone);
168 for (int i = 0; i < occurrences; ++i) {
169 Interval interval = schedule.nextDue(context);
170 if (interval == null) {
171 buffer.append("That's it.");
172 break;
173 }
174 buffer.append(interval.toString());
175 buffer.append('\n');
176 testDate = DateUtils.oneMillisAfter(interval.getToDate());
177 context = context.spawn(testDate);
178 }
179 return buffer.toString();
180 }
181
182 static String exceptionAsString(Exception e) {
183 ByteArrayOutputStream out = new ByteArrayOutputStream ();
184 e.printStackTrace(new PrintStream (out));
185 return out.toString();
186 }
187 }
188 |
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