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1
18 package org.apache.beehive.netui.pageflow.interceptor.action;
19
20 import org.apache.beehive.netui.pageflow.PageFlowController;
21 import org.apache.beehive.netui.pageflow.internal.InternalConstants;
22 import org.apache.beehive.netui.pageflow.interceptor.request.RequestInterceptorContext;
23 import org.apache.beehive.netui.util.logging.Logger;
24 import org.apache.beehive.netui.util.config.ConfigUtil;
25 import org.apache.beehive.netui.util.config.bean.PageflowActionInterceptors;
26 import org.apache.struts.action.ActionForward;
27
28 import javax.servlet.http.HttpServletRequest  ;
29 import javax.servlet.http.HttpServletResponse ;
30 import javax.servlet.ServletContext ;
31 import javax.servlet.ServletRequest ;
32 import java.util.Map ;
33 import java.util.HashMap ;
34 import java.util.Enumeration ;
35 import java.util.Iterator ;
36 import java.util.List ;
37 import java.util.ArrayList ;
38 import org.apache.beehive.netui.util.internal.concurrent.InternalConcurrentHashMap;
39 import java.io.Serializable ;
40
41
42
45 public class ActionInterceptorContext
46 extends RequestInterceptorContext
47 {
48 private static final String ACTIVE_INTERCEPTOR_CONTEXT_ATTR = InternalConstants.ATTR_PREFIX + "interceptorContext";
49 private static final String CACHE_ATTR = InternalConstants.ATTR_PREFIX + "actionInterceptorConfig";
50
51 private static final Logger _log = Logger.getInstance( ActionInterceptorContext.class );
52
53 private PageFlowController _pageFlow;
54 private InterceptorForward _originalForward;
55 private String _actionName;
56
57
58 public ActionInterceptorContext( HttpServletRequest request, HttpServletResponse response,
59 ServletContext servletContext, PageFlowController controller,
60 InterceptorForward originalForward, String actionName )
61 {
62 super( request, response, servletContext );
63 _pageFlow = controller;
64 _originalForward = originalForward;
65 _actionName = actionName;
66 }
67
68
71 public PageFlowController getPageFlow()
72 {
73 return _pageFlow;
74 }
75
76
81 public InterceptorForward getOriginalForward()
82 {
83 return _originalForward;
84 }
85
86
89 public String getActionName()
90 {
91 return _actionName;
92 }
93
94
99 public void setOverrideForward( InterceptorForward fwd, ActionInterceptor interceptor )
100 {
101 setResultOverride( fwd, interceptor );
102
103 if ( _originalForward == null ) _originalForward = new OriginalForward( getRequest() );
108
109 getRequest().setAttribute( ACTIVE_INTERCEPTOR_CONTEXT_ATTR, this );
113 }
114
115 public ActionInterceptor getOverridingActionInterceptor()
116 {
117 return ( ActionInterceptor ) super.getOverridingInterceptor();
118 }
119
120 public InterceptorForward getInterceptorForward()
121 {
122 return ( InterceptorForward ) getResultOverride();
123 }
124
125 public boolean hasInterceptorForward()
126 {
127 return hasResultOverride();
128 }
129
130 public static ActionInterceptorContext getActiveContext( ServletRequest request, boolean consume )
131 {
132 ActionInterceptorContext context =
133 ( ActionInterceptorContext ) request.getAttribute( ACTIVE_INTERCEPTOR_CONTEXT_ATTR );
134 if ( consume ) request.removeAttribute( ACTIVE_INTERCEPTOR_CONTEXT_ATTR );
135 return context;
136 }
137
138
139 private static class OriginalForward extends InterceptorForward
140 {
141 private Map _savedAttrs;
142
143
144 public OriginalForward( HttpServletRequest request )
145 {
146 super( request );
147 saveRequestAttrs( request );
148 }
149
150 private void saveRequestAttrs( ServletRequest request )
151 {
152 _savedAttrs = new HashMap ();
153
154 for ( Enumeration e = request.getAttributeNames(); e.hasMoreElements(); )
155 {
156 String attrName = ( String ) e.nextElement();
157 Object attrVal = request.getAttribute( attrName );
158
159 if ( attrVal instanceof Serializable )
160 {
161 _savedAttrs.put( attrName, attrVal );
162 }
163 else
164 {
165 if ( _log.isWarnEnabled() )
166 {
167 _log.warn( "Dropping non-serializable request attribute " + attrName + " (" + attrVal + ")." );
168 }
169 }
170 }
171 }
172
173 public void rehydrateRequest( ServletRequest request )
174 {
175 if ( _savedAttrs != null )
176 {
177 for ( Iterator i = _savedAttrs.entrySet().iterator(); i.hasNext(); )
178 {
179 Map.Entry entry = ( Map.Entry ) i.next();
180
181 String attrName = ( String ) entry.getKey();
182 if ( request.getAttribute( attrName ) == null )
183 {
184 request.setAttribute( attrName, entry.getValue() );
185 }
186 }
187 }
188 }
189 }
190
191 public List getActionInterceptors()
192 {
193 ServletContext servletContext = getServletContext();
194 InternalConcurrentHashMap cache =
195 ( InternalConcurrentHashMap ) servletContext.getAttribute( CACHE_ATTR );
196
197 if ( cache == null )
198 {
199 cache = new InternalConcurrentHashMap();
205 servletContext.setAttribute( CACHE_ATTR, cache );
206 }
207
208 String modulePath = getPageFlow().getModulePath();
209 String actionName = getActionName();
210 HashMap cacheByPageFlow = ( HashMap ) cache.get( modulePath );
211 if ( cacheByPageFlow != null )
212 {
213 List interceptors = ( List ) cacheByPageFlow.get( actionName );
214 if ( interceptors != null ) return interceptors;
215 }
216
217 if ( cacheByPageFlow == null ) cacheByPageFlow = new HashMap ();
221 PageflowActionInterceptors config = ConfigUtil.getConfig().getPageflowActionInterceptors();
222 ArrayList interceptorsList = new ArrayList ();
223
224 if ( config == null )
225 {
226 cacheByPageFlow.put( actionName, interceptorsList );
227 cache.put( modulePath, cacheByPageFlow );
228 return interceptorsList;
229 }
230
231 PageflowActionInterceptors.Global globalInterceptors = config.getGlobal();
235
236 if ( globalInterceptors != null )
237 {
238 addInterceptors( globalInterceptors.getActionInterceptorArray(), interceptorsList, ActionInterceptor.class );
239 addSimpleInterceptors( globalInterceptors.getSimpleActionInterceptorArray(), interceptorsList );
240 }
241
242 String pageFlowURI = getPageFlow().getURI();
246 PageflowActionInterceptors.PerPageflow[] perPageFlowInterceptorsConfig = config.getPerPageflowArray();
247
248 if ( perPageFlowInterceptorsConfig != null )
249 {
250 for ( int i = 0; i < perPageFlowInterceptorsConfig.length; i++ )
251 {
252 PageflowActionInterceptors.PerPageflow ppfi = perPageFlowInterceptorsConfig[i];
253
254 if ( ppfi != null && pageFlowURI.equals( ppfi.getPageflowUri() ) )
255 {
256 addInterceptors( perPageFlowInterceptorsConfig[i].getActionInterceptorArray(), interceptorsList,
260 ActionInterceptor.class );
261 addSimpleInterceptors( perPageFlowInterceptorsConfig[i].getSimpleActionInterceptorArray(),
262 interceptorsList );
263
264 PageflowActionInterceptors.PerPageflow.PerAction[] perActionConfigs =
265 perPageFlowInterceptorsConfig[i].getPerActionArray();
266
267 if ( perActionConfigs != null )
268 {
269 for ( int j = 0; j < perActionConfigs.length; j++ )
270 {
271 PageflowActionInterceptors.PerPageflow.PerAction perActionConfig = perActionConfigs[j];
272
273 if ( perActionConfig != null && actionName.equals( perActionConfig.getActionName() ) )
274 {
275 addInterceptors( perActionConfig.getActionInterceptorArray(), interceptorsList,
279 ActionInterceptor.class );
280 addSimpleInterceptors( perActionConfig.getSimpleActionInterceptorArray(),
281 interceptorsList );
282 }
283 }
284 }
285 }
286 }
287 }
288
289 cacheByPageFlow.put( actionName, interceptorsList );
290 cache.put( modulePath, cacheByPageFlow );
291 return interceptorsList;
292 }
293
294 private static void addSimpleInterceptors( org.apache.beehive.netui.util.config.bean.SimpleActionInterceptor[] configBeans,
295 List interceptorsList )
296 {
297 for ( int i = 0; i < configBeans.length; i++ )
298 {
299 org.apache.beehive.netui.util.config.bean.SimpleActionInterceptor configBean = configBeans[i];
300 String path = configBean.getInterceptPath();
301 boolean afterAction = configBean.getAfterAction();
302 SimpleActionInterceptorConfig config = new SimpleActionInterceptorConfig( path, afterAction );
303 interceptorsList.add( new SimpleActionInterceptor( config ) );
304 }
305 }
306
307 public void setOriginalForward( ActionForward origFwd )
308 {
309 _originalForward = origFwd != null ? new InterceptorForward( origFwd, getServletContext(), _pageFlow ) : null;
310 }
311
312 public static void init( ServletContext servletContext )
313 {
314 }
316 }
317 |
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