1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
|
17 | |
package org.seasar.cubby.internal.controller.impl; |
18 | |
|
19 | |
import static org.seasar.cubby.CubbyConstants.*; |
20 | |
import static org.seasar.cubby.CubbyConstants.ATTR_ACTION_CONTEXT; |
21 | |
import static org.seasar.cubby.CubbyConstants.ATTR_ERRORS; |
22 | |
import static org.seasar.cubby.CubbyConstants.ATTR_FLASH; |
23 | |
import static org.seasar.cubby.internal.util.LogMessages.format; |
24 | |
|
25 | |
import java.lang.reflect.Method; |
26 | |
import java.util.Iterator; |
27 | |
import java.util.Map; |
28 | |
|
29 | |
import javax.servlet.ServletRequest; |
30 | |
import javax.servlet.http.HttpServletRequest; |
31 | |
import javax.servlet.http.HttpServletRequestWrapper; |
32 | |
import javax.servlet.http.HttpServletResponse; |
33 | |
|
34 | |
import org.seasar.cubby.action.ActionContext; |
35 | |
import org.seasar.cubby.action.ActionErrors; |
36 | |
import org.seasar.cubby.action.ActionException; |
37 | |
import org.seasar.cubby.action.ActionResult; |
38 | |
import org.seasar.cubby.internal.controller.ActionProcessor; |
39 | |
import org.seasar.cubby.internal.controller.ActionResultWrapper; |
40 | |
import org.seasar.cubby.plugin.ActionInvocation; |
41 | |
import org.seasar.cubby.plugin.Plugin; |
42 | |
import org.seasar.cubby.plugin.PluginRegistry; |
43 | |
import org.seasar.cubby.routing.Routing; |
44 | |
import org.seasar.cubby.spi.ContainerProvider; |
45 | |
import org.seasar.cubby.spi.ProviderFactory; |
46 | |
import org.seasar.cubby.spi.container.Container; |
47 | |
import org.slf4j.Logger; |
48 | |
import org.slf4j.LoggerFactory; |
49 | |
|
50 | |
|
51 | |
|
52 | |
|
53 | |
|
54 | |
|
55 | 2 | public class ActionProcessorImpl implements ActionProcessor { |
56 | |
|
57 | |
|
58 | 1 | private static final Logger logger = LoggerFactory |
59 | |
.getLogger(ActionProcessorImpl.class); |
60 | |
|
61 | |
|
62 | |
|
63 | |
|
64 | |
public ActionResultWrapper process(final HttpServletRequest request, |
65 | |
final HttpServletResponse response, final Routing routing) |
66 | |
throws Exception { |
67 | |
|
68 | 2 | final Method actionMethod = routing.getActionMethod(); |
69 | 2 | if (logger.isDebugEnabled()) { |
70 | 2 | logger.debug(format("DCUB0004", request.getRequestURI())); |
71 | 2 | logger.debug(format("DCUB0005", actionMethod)); |
72 | |
} |
73 | |
|
74 | 2 | final Class<?> actionClass = routing.getActionClass(); |
75 | |
|
76 | 2 | final Container container = ProviderFactory |
77 | |
.get(ContainerProvider.class).getContainer(); |
78 | |
|
79 | 2 | final Object action = container.lookup(actionClass); |
80 | 2 | request.setAttribute(ATTR_ACTION, action); |
81 | |
|
82 | 2 | final HttpServletRequest wrapeeRequest = (HttpServletRequest) ((HttpServletRequestWrapper) request) |
83 | |
.getRequest(); |
84 | 2 | final ActionErrors actionErrors = setupActionErrors(wrapeeRequest); |
85 | 2 | final Map<String, Object> flashMap = setupFlashMap(wrapeeRequest); |
86 | 2 | final ActionContext actionContext = new ActionContextImpl(request, |
87 | |
action, actionClass, actionMethod, actionErrors, flashMap); |
88 | 2 | request.setAttribute(ATTR_ACTION_CONTEXT, actionContext); |
89 | |
|
90 | 2 | actionContext.invokeInitializeMethod(); |
91 | |
|
92 | 2 | final ActionInvocation actionInvocation = new ActionInvocationImpl( |
93 | |
request, response, actionContext); |
94 | 2 | final ActionResult actionResult = actionInvocation.proceed(); |
95 | 2 | if (actionResult == null) { |
96 | 0 | throw new ActionException(format("ECUB0101", actionMethod)); |
97 | |
} |
98 | |
|
99 | 2 | final ActionResultWrapper actionResultWrapper = new ActionResultWrapperImpl( |
100 | |
actionResult, actionContext); |
101 | 2 | return actionResultWrapper; |
102 | |
} |
103 | |
|
104 | |
private ActionErrors setupActionErrors(final ServletRequest request) { |
105 | 2 | final ActionErrors actionErrors = (ActionErrors) request |
106 | |
.getAttribute(ATTR_ERRORS); |
107 | 2 | if (actionErrors != null) { |
108 | 0 | return actionErrors; |
109 | |
} |
110 | |
|
111 | 2 | final ActionErrors newActionErrors = new ActionErrorsImpl(); |
112 | 2 | request.setAttribute(ATTR_ERRORS, newActionErrors); |
113 | 2 | return newActionErrors; |
114 | |
} |
115 | |
|
116 | |
private Map<String, Object> setupFlashMap(final ServletRequest request) { |
117 | |
@SuppressWarnings("unchecked") |
118 | 2 | final Map<String, Object> flashMap = (Map<String, Object>) request |
119 | |
.getAttribute(ATTR_FLASH); |
120 | 2 | if (flashMap != null) { |
121 | 0 | return flashMap; |
122 | |
} |
123 | |
|
124 | 2 | final Map<String, Object> newFlashMap = new FlashMapImpl( |
125 | |
(HttpServletRequest) request); |
126 | 2 | request.setAttribute(ATTR_FLASH, newFlashMap); |
127 | 2 | return newFlashMap; |
128 | |
} |
129 | |
|
130 | |
|
131 | |
|
132 | |
|
133 | |
|
134 | |
|
135 | 2 | static class ActionInvocationImpl implements ActionInvocation { |
136 | |
|
137 | |
|
138 | |
private final HttpServletRequest request; |
139 | |
|
140 | |
|
141 | |
private final HttpServletResponse response; |
142 | |
|
143 | |
|
144 | |
private final ActionContext actionContext; |
145 | |
|
146 | |
|
147 | |
private final Iterator<Plugin> pluginsIterator; |
148 | |
|
149 | |
|
150 | |
|
151 | |
|
152 | |
|
153 | |
|
154 | |
|
155 | |
|
156 | |
|
157 | |
|
158 | |
|
159 | |
public ActionInvocationImpl(final HttpServletRequest request, |
160 | |
final HttpServletResponse response, |
161 | 2 | final ActionContext actionContext) { |
162 | 2 | this.request = request; |
163 | 2 | this.response = response; |
164 | 2 | this.actionContext = actionContext; |
165 | |
|
166 | 2 | final PluginRegistry pluginRegistry = PluginRegistry.getInstance(); |
167 | 2 | this.pluginsIterator = pluginRegistry.getPlugins().iterator(); |
168 | 2 | } |
169 | |
|
170 | |
|
171 | |
|
172 | |
|
173 | |
public ActionResult proceed() throws Exception { |
174 | |
final ActionResult actionResult; |
175 | 4 | if (pluginsIterator.hasNext()) { |
176 | 2 | final Plugin plugin = pluginsIterator.next(); |
177 | 2 | actionResult = plugin.invokeAction(this); |
178 | 2 | } else { |
179 | 2 | final ActionContext actionContext = getActionContext(); |
180 | 2 | final Object action = actionContext.getAction(); |
181 | 2 | final Method actionMethod = actionContext.getActionMethod(); |
182 | 2 | actionResult = (ActionResult) actionMethod.invoke(action); |
183 | |
} |
184 | 4 | return actionResult; |
185 | |
} |
186 | |
|
187 | |
|
188 | |
|
189 | |
|
190 | |
public HttpServletRequest getRequest() { |
191 | 0 | return request; |
192 | |
} |
193 | |
|
194 | |
|
195 | |
|
196 | |
|
197 | |
public HttpServletResponse getResponse() { |
198 | 0 | return response; |
199 | |
} |
200 | |
|
201 | |
|
202 | |
|
203 | |
|
204 | |
public ActionContext getActionContext() { |
205 | 2 | return actionContext; |
206 | |
} |
207 | |
|
208 | |
} |
209 | |
|
210 | |
} |