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1
18 package org.apache.beehive.netui.pageflow.internal;
19
20 import org.apache.beehive.netui.util.logging.Logger;
21 import org.apache.beehive.netui.util.config.ConfigUtil;
22 import org.apache.beehive.netui.util.config.bean.PageflowConfig;
23 import org.apache.beehive.netui.pageflow.PageFlowActionServlet;
24 import org.apache.beehive.netui.pageflow.PageFlowContextListener;
25 import org.apache.beehive.netui.pageflow.PageFlowConstants;
26
27 import javax.servlet.ServletContext  ;
28 import java.io.Serializable ;
29
30
31
32 public class LegacySettings
33 implements Serializable , PageFlowConstants
34 {
35 private static final Logger _log = Logger.getInstance( LegacySettings.class );
36
37 private static final String CONTEXT_ATTR = InternalConstants.ATTR_PREFIX + "_cache";
38 private static final int DEFAULT_MAX_FORWARDS_PER_REQUEST = 25;
39 private static final int DEFAULT_MAX_NESTING_STACK_DEPTH = 10;
40
41 public static final int serialVersionUID = 1;
42
43 private boolean _secureForwards = false;
44 private int _forwardOverflowCount;
45 private int _nestingOverflowCount;
46
47
48 public static LegacySettings get( ServletContext servletContext )
49 {
50 LegacySettings ls = ( LegacySettings ) servletContext.getAttribute( CONTEXT_ATTR );
51
52 if ( ls == null )
53 {
54 if ( _log.isErrorEnabled() )
55 {
56 _log.error( "Page Flow ServletContext cache not initialized; either "
57 + PageFlowActionServlet.class.getName() + " must be the Struts action servlet, or "
58 + PageFlowContextListener.class.getName() + " must be registered as a listener in web.xml." );
59 }
60
61 return init( servletContext );
66 }
67
68 return ls;
69 }
70
71 public static LegacySettings init( ServletContext servletContext )
72 {
73 assert servletContext.getAttribute( CONTEXT_ATTR ) == null : LegacySettings.class.getName() + " already initialized.";
74 LegacySettings cache = new LegacySettings( servletContext );
75 servletContext.setAttribute( CONTEXT_ATTR, cache );
76 return cache;
77 }
78
79 private void loadLegacySettings( ServletContext servletContext )
80 {
81 PageflowConfig pageflowConfig = ConfigUtil.getConfig().getPageflowConfig();
82 if ( pageflowConfig == null ) pageflowConfig = ConfigUtil.getConfig().addNewPageflowConfig();
84 Integer forwardOverflowCount =
85 loadLegacyParam( FORWARD_OVERFLOW_COUNT_PARAM, servletContext, "max-forwards-per-request" );
86 if ( forwardOverflowCount != null )
87 {
88 _forwardOverflowCount = forwardOverflowCount.intValue();
89 }
90 else
91 {
92 _forwardOverflowCount = pageflowConfig.isSetMaxForwardsPerRequest()
94 ? pageflowConfig.getMaxForwardsPerRequest()
95 : DEFAULT_MAX_FORWARDS_PER_REQUEST;
96 }
97
98 Integer nestingOverflowCount =
99 loadLegacyParam( NESTING_OVERFLOW_COUNT_PARAM, servletContext, "max-nesting-stack-depth" );
100 if ( nestingOverflowCount != null )
101 {
102 _nestingOverflowCount = nestingOverflowCount.intValue();
103 }
104 else
105 {
106 _nestingOverflowCount = pageflowConfig.isSetMaxNestingStackDepth()
108 ? pageflowConfig.getMaxNestingStackDepth()
109 : DEFAULT_MAX_NESTING_STACK_DEPTH;
110 }
111
112 String doSecureForwards = servletContext.getInitParameter( SECURE_FORWARDS_PARAM );
113
114 if ( doSecureForwards != null )
115 {
116 _log.warn( "Servlet context-param " + SECURE_FORWARDS_PARAM +
117 " is deprecated; use the ensure-secure-forwards element within pageflow-config in "
118 + InternalConstants.NETUI_CONFIG_PATH );
119 _secureForwards = Boolean.valueOf( doSecureForwards ).booleanValue();
120 }
121 else
122 {
123 _secureForwards = pageflowConfig.getEnsureSecureForwards();
124 }
125
126
127 }
128 private LegacySettings( ServletContext servletContext )
129 {
130 loadLegacySettings( servletContext );
135
136 }
137
138 public boolean shouldDoSecureForwards()
139 {
140 return _secureForwards;
141 }
142
143 public int getForwardOverflowCount()
144 {
145 return _forwardOverflowCount;
146 }
147
148 public int getNestingOverflowCount()
149 {
150 return _nestingOverflowCount;
151 }
152
153 private static Integer loadLegacyParam( String paramName, ServletContext servletContext, String configElementName )
154 {
155 String strVal = servletContext.getInitParameter( paramName );
156
157 if ( strVal != null )
158 {
159 _log.warn( "Servlet context-param " + paramName + "is deprecated; use the " + configElementName
160 + " element within pageflow-config in " + InternalConstants.NETUI_CONFIG_PATH );
161
162 try
163 {
164 return Integer.valueOf( strVal );
165 }
166 catch ( NumberFormatException e )
167 {
168 _log.error( "Could not parse integer value from context-param " + paramName + '.' );
169 }
170 }
171
172 return null;
173 }
174 }
175 |
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