##### Coverage Report - org.apache.turbine.pipeline.TurbinePipeline

Classes in this File | Line Coverage | Branch Coverage | Complexity
TurbinePipeline |
57% | 29/50
37% | 6/16
| 2.125;2,125

1 |  |
     package org.apache.turbine.pipeline;
2 |  |
3 |  |
4 |  |
     /*
5 |  |
      * Licensed to the Apache Software Foundation (ASF) under one
6 |  |
      * or more contributor license agreements.  See the NOTICE file
7 |  |
      * distributed with this work for additional information
8 |  |
      * regarding copyright ownership.  The ASF licenses this file
9 |  |
      * to you under the Apache License, Version 2.0 (the
10 |  |
      * "License"); you may not use this file except in compliance
11 |  |
      * with the License.  You may obtain a copy of the License at
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      *
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      *   http://www.apache.org/licenses/LICENSE-2.0
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      *
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      * Unless required by applicable law or agreed to in writing,
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      * software distributed under the License is distributed on an
17 |  |
      * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
18 |  |
      * KIND, either express or implied.  See the License for the
19 |  |
      * specific language governing permissions and limitations
20 |  |
      * under the License.
21 |  |
      */
22 |  |
23 |  |
24 |  |
     import java.io.IOException;
25 |  |
26 |  |
     import org.apache.turbine.annotation.AnnotationProcessor;
27 |  |
     import org.apache.turbine.util.TurbineException;
28 |  |
29 |  |
     /**
30 |  |
      * Flexible implementation of a {@link org.apache.turbine.pipeline.Pipeline}.
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      * Originally based on code from Catalina and ideas from Apache httpd.
32 |  |
      *
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      * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
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      * @author <a href="mailto:jvanzyl@zenplex.com">Jason van Zyl</a>
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      * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a>
36 |  |
      */
37 | 12 |
     public class TurbinePipeline
38 |  |
         implements Pipeline, ValveContext
39 |  |
     {
40 |  |
         /**
41 |  |
          * The "Turbine Classic" pipeline.
42 |  |
          */
43 |  |
         public static final String CLASSIC_PIPELINE =
44 |  |
             "WEB-INF/conf/turbine-classic-pipeline.xml";
45 |  |
46 |  |
         /**
47 |  |
          * Name of this pipeline.
48 |  |
          */
49 |  |
         protected String name;
50 |  |
51 |  |
         /**
52 |  |
          * The set of Valves associated with this Pipeline.
53 |  |
          */
54 | 12 |
         protected Valve[] valves = new Valve[0];
55 |  |
56 |  |
         /**
57 |  |
          * The per-thread execution state for processing through this
58 |  |
          * pipeline.  The actual value is a java.lang.Integer object
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          * containing the subscript into the <code>values</code> array, or
60 |  |
          * a subscript equal to <code>values.length</code> if the basic
61 |  |
          * Valve is currently being processed.
62 |  |
          */
63 | 12 |
         protected ThreadLocal<Integer> state= new ThreadLocal<Integer>();
64 |  |
65 |  |
         /**
66 |  |
          * @see org.apache.turbine.pipeline.Pipeline#initialize()
67 |  |
          */
68 |  |
         @Override
69 |  |
         public void initialize()
70 |  |
             throws Exception
71 |  |
         {
72 | 47 |
             if (state==null)
73 |  |
             {
74 | 41 |
                 state = new ThreadLocal<Integer>();
75 |  |
             }
76 |  |
77 |  |
             // Valve implementations are added to this Pipeline using the
78 |  |
             // Mapper.
79 |  |
80 |  |
             // Initialize the valves
81 | 422 |
             for (int i = 0; i < valves.length; i++)
82 |  |
             {
83 | 375 |
                 AnnotationProcessor.process(valves[i]);
84 | 375 |
                 valves[i].initialize();
85 |  |
             }
86 | 47 |
         }
87 |  |
88 |  |
         /**
89 |  |
          * Set the name of this pipeline.
90 |  |
          *
91 |  |
          * @param name Name of this pipeline.
92 |  |
          */
93 |  |
         public void setName(String name)
94 |  |
         {
95 | 0 |
             this.name = name;
96 | 0 |
         }
97 |  |
98 |  |
         /**
99 |  |
          * Get the name of this pipeline.
100 |  |
          *
101 |  |
          * @return String Name of this pipeline.
102 |  |
          */
103 |  |
         public String getName()
104 |  |
         {
105 | 0 |
             return name;
106 |  |
         }
107 |  |
108 |  |
         /**
109 |  |
          * @see org.apache.turbine.pipeline.Pipeline#addValve(Valve)
110 |  |
          */
111 |  |
         @Override
112 |  |
         public void addValve(Valve valve)
113 |  |
         {
114 |  |
             // Add this Valve to the set associated with this Pipeline
115 | 13 |
             synchronized (valves)
116 |  |
             {
117 | 13 |
                 Valve[] results = new Valve[valves.length + 1];
118 | 13 |
                 System.arraycopy(valves, 0, results, 0, valves.length);
119 | 13 |
                 results[valves.length] = valve;
120 | 13 |
                 valves = results;
121 | 13 |
             }
122 | 13 |
         }
123 |  |
124 |  |
         /**
125 |  |
          * @see org.apache.turbine.pipeline.Pipeline#getValves()
126 |  |
          */
127 |  |
         @Override
128 |  |
         public Valve[] getValves()
129 |  |
         {
130 | 3 |
             synchronized (valves)
131 |  |
             {
132 | 3 |
                 Valve[] results = new Valve[valves.length];
133 | 3 |
                 System.arraycopy(valves, 0, results, 0, valves.length);
134 | 3 |
                 return results;
135 | 0 |
             }
136 |  |
         }
137 |  |
138 |  |
         /**
139 |  |
          * @see org.apache.turbine.pipeline.Pipeline#removeValve(Valve)
140 |  |
          */
141 |  |
         @Override
142 |  |
         public void removeValve(Valve valve)
143 |  |
         {
144 | 0 |
             synchronized (valves)
145 |  |
             {
146 |  |
                 // Locate this Valve in our list
147 | 0 |
                 int index = -1;
148 | 0 |
                 for (int i = 0; i < valves.length; i++)
149 |  |
                 {
150 | 0 |
                     if (valve == valves[i])
151 |  |
                     {
152 | 0 |
                         index = i;
153 | 0 |
                         break;
154 |  |
                     }
155 |  |
                 }
156 | 0 |
                 if (index < 0)
157 |  |
                 {
158 | 0 |
                     return;
159 |  |
                 }
160 |  |
161 |  |
                 // Remove this valve from our list
162 | 0 |
                 Valve[] results = new Valve[valves.length - 1];
163 | 0 |
                 int n = 0;
164 | 0 |
                 for (int i = 0; i < valves.length; i++)
165 |  |
                 {
166 | 0 |
                     if (i == index)
167 |  |
                     {
168 | 0 |
                         continue;
169 |  |
                     }
170 | 0 |
                     results[n++] = valves[i];
171 |  |
                 }
172 | 0 |
                 valves = results;
173 | 0 |
             }
174 | 0 |
         }
175 |  |
176 |  |
         /**
177 |  |
          * @see org.apache.turbine.pipeline.Pipeline#invoke(PipelineData)
178 |  |
          */
179 |  |
         @Override
180 |  |
         public void invoke(PipelineData pipelineData)
181 |  |
             throws TurbineException, IOException
182 |  |
         {
183 |  |
             // Initialize the per-thread state for this thread
184 | 13 |
             state.set(Integer.valueOf(0));
185 |  |
186 |  |
             // Invoke the first Valve in this pipeline for this request
187 | 13 |
             invokeNext(pipelineData);
188 | 12 |
         }
189 |  |
190 |  |
         /**
191 |  |
          * @see org.apache.turbine.pipeline.ValveContext#invokeNext(PipelineData)
192 |  |
          */
193 |  |
         @Override
194 |  |
         public void invokeNext(PipelineData pipelineData)
195 |  |
             throws TurbineException, IOException
196 |  |
         {
197 |  |
             // Identify the current subscript for the current request thread
198 | 32 |
             Integer current = state.get();
199 | 32 |
             int subscript = current.intValue();
200 |  |
201 | 32 |
             if (subscript < valves.length)
202 |  |
             {
203 |  |
                 // Invoke the requested Valve for the current request
204 |  |
                 // thread and increment its thread-local state.
205 | 20 |
                 state.set(Integer.valueOf(subscript + 1));
206 | 20 |
                 valves[subscript].invoke(pipelineData, this);
207 |  |
             }
208 | 25 |
         }
209 |  |
     }