svn commit: r1347419 - /cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/component/XMLGenerator.java

Author: ilgrosso
Date: Thu Jun  7 06:53:30 2012
New Revision: 1347419

URL: http://svn.apache.org/viewvc?rev=1347419&view=rev
Log:
Making XMLGenerator cacheable

Modified:
    cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/component/XMLGenerator.java

Modified: cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/component/XMLGenerator.java
URL: http://svn.apache.org/viewvc/cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/component/XMLGenerator.java?rev=1347419&r1=1347418&r2=1347419&view=diff
==============================================================================
--- cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/component/XMLGenerator.java (original)
+++ cocoon/cocoon3/trunk/cocoon-sax/src/main/java/org/apache/cocoon/sax/component/XMLGenerator.java Thu Jun  7 06:53:30 2012
@@ -24,6 +24,7 @@ import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLConnection;
 import java.util.Arrays;
@@ -192,7 +193,7 @@ public class XMLGenerator extends Abstra
         }
     }
 
-    private class FileGenerator extends AbstractSAXGenerator {
+    private class FileGenerator extends AbstractSAXGenerator implements CachingPipelineComponent {
 
         private final transient File file;
 
@@ -204,6 +205,28 @@ public class XMLGenerator extends Abstra
 
             this.file = file;
         }
+        
+        /**
+         * {@inheritDoc}
+         *
+         * @see org.apache.cocoon.pipeline.component.CachingPipelineComponent #constructCacheKey()
+         */
+        @Override
+        public CacheKey constructCacheKey() {
+            if (this.file == null) {
+                throw new SetupException(this.getClass().getSimpleName() + " has no file.");
+            }
+
+            CacheKey cacheKey = null;
+            try {
+                cacheKey = new TimestampCacheKey(this.file.toURI().toURL(), this.file.lastModified());
+            } catch (MalformedURLException e) {
+                LOG.error("Can't construct cache key. "
+                        + "Error while converting to " + this.file + " to URL", e);
+            }
+
+            return cacheKey;
+        }
 
         @Override
         public void execute() {