1 package org.apache.turbine.pipeline;
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24 import java.io.IOException;
25
26 import org.apache.commons.logging.Log;
27 import org.apache.commons.logging.LogFactory;
28 import org.apache.turbine.util.RunData;
29 import org.apache.turbine.util.TurbineException;
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39 public class DetermineRedirectRequestedValve
40 extends AbstractValve
41 {
42 private static final Log log = LogFactory.getLog(DetermineRedirectRequestedValve.class);
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46 public DetermineRedirectRequestedValve()
47 {
48
49 }
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54 public void invoke(PipelineData pipelineData, ValveContext context)
55 throws IOException, TurbineException
56 {
57 try
58 {
59 redirectRequested(pipelineData);
60 }
61 catch (Exception e)
62 {
63 throw new TurbineException(e);
64 }
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67 context.invokeNext(pipelineData);
68 }
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75 protected void redirectRequested(PipelineData pipelineData)
76 throws Exception
77 {
78 RunData data = getRunData(pipelineData);
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80 boolean requestRedirected = ((data.getRedirectURI() != null)
81 && (data.getRedirectURI().length() > 0));
82 if (requestRedirected)
83 {
84 if (data.getResponse().isCommitted())
85 {
86 requestRedirected = false;
87 log.warn("redirect requested, response already committed: " +
88 data.getRedirectURI());
89 }
90 else
91 {
92 data.getResponse().sendRedirect(data.getRedirectURI());
93 }
94 }
95
96 if (!requestRedirected)
97 {
98 try
99 {
100 if (data.isPageSet() == false && data.isOutSet() == false)
101 {
102 throw new Exception("Nothing to output");
103 }
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109 if (data.isPageSet() && data.isOutSet() == false)
110 {
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112 data.getResponse().setLocale(data.getLocale());
113 data.getResponse().setContentType(
114 data.getContentType());
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117 data.getResponse().setStatus(data.getStatusCode());
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119 data.getPage().output(data.getResponse().getWriter());
120 }
121 }
122 catch (Exception e)
123 {
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128 log.debug("Output stream closed? ", e);
129 }
130 }
131 }
132 }