1 | package com.hammurapi.eventbus.local; |
2 | |
3 | import java.io.File; |
4 | import java.io.FileWriter; |
5 | import java.io.Writer; |
6 | import java.util.HashMap; |
7 | import java.util.Map; |
8 | |
9 | import org.onemind.jxp.JxpContext; |
10 | import org.onemind.jxp.JxpPageSource; |
11 | import org.onemind.jxp.JxpProcessor; |
12 | import org.onemind.jxp.ResourceStreamPageSource; |
13 | |
14 | import com.hammurapi.eventbus.EventBusException; |
15 | |
16 | /** |
17 | * This class generates domain-specific implementations of |
18 | * event store and event bus. |
19 | * @author Pavel Vlasov |
20 | * |
21 | */ |
22 | public class DomainGenerator { |
23 | |
24 | private String packageName; |
25 | private String domain; |
26 | private String eventType; |
27 | private String priorityType; |
28 | private String contextType; |
29 | private File outputDir; |
30 | |
31 | public String getPackageName() { |
32 | return packageName; |
33 | } |
34 | |
35 | public void setPackageName(String packageName) { |
36 | this.packageName = packageName; |
37 | } |
38 | |
39 | public String getDomain() { |
40 | return domain; |
41 | } |
42 | |
43 | public void setDomain(String domain) { |
44 | this.domain = domain; |
45 | } |
46 | |
47 | public String getEventType() { |
48 | return eventType; |
49 | } |
50 | |
51 | public void setEventType(String eventType) { |
52 | this.eventType = eventType; |
53 | } |
54 | |
55 | public String getPriorityType() { |
56 | return priorityType; |
57 | } |
58 | |
59 | public void setPriorityType(String priorityType) { |
60 | this.priorityType = priorityType; |
61 | } |
62 | |
63 | public String getContextType() { |
64 | return contextType; |
65 | } |
66 | |
67 | public void setContextType(String contextType) { |
68 | this.contextType = contextType; |
69 | } |
70 | |
71 | public File getOutputDir() { |
72 | return outputDir; |
73 | } |
74 | |
75 | public void setOutputDir(File outputDir) { |
76 | this.outputDir = outputDir; |
77 | } |
78 | |
79 | public void generate() { |
80 | Map<String, String> environment = new HashMap<String,String>(); |
81 | environment.put("package", packageName); |
82 | environment.put("domain", domain); |
83 | environment.put("E", eventType); |
84 | environment.put("P", priorityType); |
85 | environment.put("C", contextType); |
86 | |
87 | try { |
88 | String prefix = getClass().getPackage().getName().replace('.', '/'); |
89 | JxpPageSource pageSource = new ResourceStreamPageSource("/"+prefix); |
90 | JxpContext context = new JxpContext(pageSource); |
91 | JxpProcessor processor = new JxpProcessor(context); |
92 | |
93 | File packageDir = new File(outputDir, packageName.replace('.', File.separatorChar)); |
94 | packageDir.mkdirs(); |
95 | |
96 | renderEventStore(processor, environment, packageDir); |
97 | renderEventStoreImpl(processor, environment, packageDir); |
98 | renderEventStorePredicate(processor, environment, packageDir); |
99 | renderEventStoreAbstractPredicate(processor, environment, packageDir); |
100 | renderEventStoreExtractor(processor, environment, packageDir); |
101 | renderEventStoreAbstractExtractor(processor, environment, packageDir); |
102 | renderEventBus(processor, environment, packageDir); |
103 | renderIntrospector(processor, environment, packageDir); |
104 | renderDispatchNetworkSnapshot(processor, environment, packageDir); |
105 | renderDispatchContext(processor, environment, packageDir); |
106 | renderDispatchJoinContext(processor, environment, packageDir); |
107 | |
108 | } catch (Exception e) { |
109 | throw new EventBusException(e); |
110 | } |
111 | } |
112 | |
113 | private void renderEventStore( |
114 | JxpProcessor processor, |
115 | Map<String, String> environment, |
116 | File packageDir) throws Exception { |
117 | File outputFile = new File(packageDir, domain+"EventStore.java"); |
118 | Writer writer = new FileWriter(outputFile); |
119 | try { |
120 | processor.process("DomainSpecificEventStore.jxp", writer, environment); |
121 | } finally { |
122 | writer.close(); |
123 | } |
124 | } |
125 | |
126 | private void renderEventStorePredicate( |
127 | JxpProcessor processor, |
128 | Map<String, String> environment, |
129 | File packageDir) throws Exception { |
130 | File outputFile = new File(packageDir, domain+"EventStorePredicate.java"); |
131 | Writer writer = new FileWriter(outputFile); |
132 | try { |
133 | processor.process("DomainSpecificEventStorePredicate.jxp", writer, environment); |
134 | } finally { |
135 | writer.close(); |
136 | } |
137 | } |
138 | |
139 | private void renderEventStoreAbstractPredicate( |
140 | JxpProcessor processor, |
141 | Map<String, String> environment, |
142 | File packageDir) throws Exception { |
143 | File outputFile = new File(packageDir, domain+"EventStoreAbstractPredicate.java"); |
144 | Writer writer = new FileWriter(outputFile); |
145 | try { |
146 | processor.process("DomainSpecificEventStoreAbstractPredicate.jxp", writer, environment); |
147 | } finally { |
148 | writer.close(); |
149 | } |
150 | } |
151 | |
152 | private void renderEventStoreExtractor( |
153 | JxpProcessor processor, |
154 | Map<String, String> environment, |
155 | File packageDir) throws Exception { |
156 | File outputFile = new File(packageDir, domain+"EventStoreExtractor.java"); |
157 | Writer writer = new FileWriter(outputFile); |
158 | try { |
159 | processor.process("DomainSpecificEventStoreExtractor.jxp", writer, environment); |
160 | } finally { |
161 | writer.close(); |
162 | } |
163 | } |
164 | |
165 | private void renderEventStoreAbstractExtractor( |
166 | JxpProcessor processor, |
167 | Map<String, String> environment, |
168 | File packageDir) throws Exception { |
169 | File outputFile = new File(packageDir, domain+"EventStoreAbstractExtractor.java"); |
170 | Writer writer = new FileWriter(outputFile); |
171 | try { |
172 | processor.process("DomainSpecificEventStoreAbstractExtractor.jxp", writer, environment); |
173 | } finally { |
174 | writer.close(); |
175 | } |
176 | } |
177 | |
178 | private void renderEventStoreImpl( |
179 | JxpProcessor processor, |
180 | Map<String, String> environment, |
181 | File packageDir) throws Exception { |
182 | File outputFile = new File(packageDir, domain+"EventStoreImpl.java"); |
183 | Writer writer = new FileWriter(outputFile); |
184 | try { |
185 | processor.process("DomainSpecificEventStoreImpl.jxp", writer, environment); |
186 | } finally { |
187 | writer.close(); |
188 | } |
189 | } |
190 | |
191 | private void renderEventBus( |
192 | JxpProcessor processor, |
193 | Map<String, String> environment, |
194 | File packageDir) throws Exception { |
195 | File outputFile = new File(packageDir, domain+"EventBus.java"); |
196 | Writer writer = new FileWriter(outputFile); |
197 | try { |
198 | processor.process("DomainSpecificEventBus.jxp", writer, environment); |
199 | } finally { |
200 | writer.close(); |
201 | } |
202 | } |
203 | |
204 | private void renderIntrospector( |
205 | JxpProcessor processor, |
206 | Map<String, String> environment, |
207 | File packageDir) throws Exception { |
208 | File outputFile = new File(packageDir, domain+"Introspector.java"); |
209 | Writer writer = new FileWriter(outputFile); |
210 | try { |
211 | processor.process("DomainSpecificIntrospector.jxp", writer, environment); |
212 | } finally { |
213 | writer.close(); |
214 | } |
215 | } |
216 | |
217 | private void renderDispatchNetworkSnapshot( |
218 | JxpProcessor processor, |
219 | Map<String, String> environment, |
220 | File packageDir) throws Exception { |
221 | File outputFile = new File(packageDir, domain+"DispatchNetworkDotSnapshot.java"); |
222 | Writer writer = new FileWriter(outputFile); |
223 | try { |
224 | processor.process("DomainSpecificDispatchNetworkDotSnapshot.jxp", writer, environment); |
225 | } finally { |
226 | writer.close(); |
227 | } |
228 | } |
229 | |
230 | private void renderDispatchContext( |
231 | JxpProcessor processor, |
232 | Map<String, String> environment, |
233 | File packageDir) throws Exception { |
234 | File outputFile = new File(packageDir, domain+"EventDispatchContext.java"); |
235 | Writer writer = new FileWriter(outputFile); |
236 | try { |
237 | processor.process("DomainSpecificEventDispatchContext.jxp", writer, environment); |
238 | } finally { |
239 | writer.close(); |
240 | } |
241 | } |
242 | |
243 | private void renderDispatchJoinContext( |
244 | JxpProcessor processor, |
245 | Map<String, String> environment, |
246 | File packageDir) throws Exception { |
247 | File outputFile = new File(packageDir, domain+"EventDispatchJoinContext.java"); |
248 | Writer writer = new FileWriter(outputFile); |
249 | try { |
250 | processor.process("DomainSpecificEventDispatchJoinContext.jxp", writer, environment); |
251 | } finally { |
252 | writer.close(); |
253 | } |
254 | } |
255 | |
256 | /** |
257 | * @param args |
258 | */ |
259 | public static void main(String[] args) { |
260 | System.out.println("Parameters: <output dir> <package name> <domain> <event type> <priority type> <context type>"); |
261 | DomainGenerator generator = new DomainGenerator(); |
262 | generator.setOutputDir(new File(args[0])); |
263 | generator.setPackageName(args[1]); |
264 | generator.setDomain(args[2]); |
265 | generator.setEventType(args[3]); |
266 | generator.setPriorityType(args[4]); |
267 | generator.setContextType(args[5]); |
268 | generator.generate(); |
269 | } |
270 | |
271 | } |