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Posted to commits@lenya.apache.org by an...@apache.org on 2008/03/04 01:27:32 UTC

svn commit: r633331 - in /lenya/sandbox/modules/sitemeta: config/cocoon-xconf/metadata-store.xconf java/src/org/apache/lenya/modules/sitemeta/SiteMetaDataTransformer.java

Author: andreas
Date: Mon Mar  3 16:27:29 2008
New Revision: 633331

URL: http://svn.apache.org/viewvc?rev=633331&view=rev
Log:
Adding meta data store for SiteMetaDataTransformer.

Added:
    lenya/sandbox/modules/sitemeta/config/cocoon-xconf/metadata-store.xconf
Modified:
    lenya/sandbox/modules/sitemeta/java/src/org/apache/lenya/modules/sitemeta/SiteMetaDataTransformer.java

Added: lenya/sandbox/modules/sitemeta/config/cocoon-xconf/metadata-store.xconf
URL: http://svn.apache.org/viewvc/lenya/sandbox/modules/sitemeta/config/cocoon-xconf/metadata-store.xconf?rev=633331&view=auto
==============================================================================
--- lenya/sandbox/modules/sitemeta/config/cocoon-xconf/metadata-store.xconf (added)
+++ lenya/sandbox/modules/sitemeta/config/cocoon-xconf/metadata-store.xconf Mon Mar  3 16:27:29 2008
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<xconf xpath="/cocoon" unless="/cocoon/component[@role = 'org.apache.lenya.modules.sitemeta.SiteMetaDataTransformerStore']">
+  <component role="org.apache.lenya.modules.sitemeta.SiteMetaDataTransformerStore"
+    class="org.apache.excalibur.store.impl.MRUMemoryStore" logger="lenya.source.sitemeta.store">
+    <parameter name="maxobjects" value="10000"/>
+  </component>
+</xconf>

Modified: lenya/sandbox/modules/sitemeta/java/src/org/apache/lenya/modules/sitemeta/SiteMetaDataTransformer.java
URL: http://svn.apache.org/viewvc/lenya/sandbox/modules/sitemeta/java/src/org/apache/lenya/modules/sitemeta/SiteMetaDataTransformer.java?rev=633331&r1=633330&r2=633331&view=diff
==============================================================================
--- lenya/sandbox/modules/sitemeta/java/src/org/apache/lenya/modules/sitemeta/SiteMetaDataTransformer.java (original)
+++ lenya/sandbox/modules/sitemeta/java/src/org/apache/lenya/modules/sitemeta/SiteMetaDataTransformer.java Mon Mar  3 16:27:29 2008
@@ -19,15 +19,18 @@
 
 import java.io.IOException;
 import java.net.MalformedURLException;
+import java.util.HashMap;
 import java.util.Map;
 
 import org.apache.avalon.framework.activity.Initializable;
 import org.apache.avalon.framework.parameters.Parameters;
+import org.apache.avalon.framework.service.ServiceException;
 import org.apache.cocoon.ProcessingException;
 import org.apache.cocoon.environment.ObjectModelHelper;
 import org.apache.cocoon.environment.Request;
 import org.apache.cocoon.environment.SourceResolver;
 import org.apache.cocoon.transformation.AbstractSAXTransformer;
+import org.apache.excalibur.store.impl.MRUMemoryStore;
 import org.apache.lenya.cms.linking.Link;
 import org.apache.lenya.cms.linking.LinkResolver;
 import org.apache.lenya.cms.linking.LinkTarget;
@@ -53,6 +56,19 @@
     private Area area;
     private LinkResolver linkResolver;
 
+    protected static MRUMemoryStore cache;
+
+    protected synchronized MRUMemoryStore getCache() {
+        if (cache == null) {
+            try {
+                cache = (MRUMemoryStore) this.manager.lookup(getClass().getName() + "Store");
+            } catch (ServiceException e) {
+                throw new RuntimeException(e);
+            }
+        }
+        return cache;
+    }
+
     public void setup(SourceResolver resolver, Map objectModel, String src, Parameters params)
             throws ProcessingException, SAXException, IOException {
         super.setup(resolver, objectModel, src, params);
@@ -80,8 +96,8 @@
         }
     }
 
-    protected static final String NAV_NAMESPACE = "http://apache.org/cocoon/lenya/navigation/1.0";
-    protected static final String ELEM_NODE = "node";
+    protected static final String NAV_NAMESPACE = "http://apache.org/lenya/site/1.0";
+    protected static final String ELEM_LINK = "link";
     protected static final String ATTR_HREF = "href";
 
     /**
@@ -101,7 +117,7 @@
 
     public void startElement(String uri, String localName, String qName, Attributes attr)
             throws SAXException {
-        if (uri != null && uri.equals(NAV_NAMESPACE) && localName.equals(ELEM_NODE)) {
+        if (uri != null && uri.equals(NAV_NAMESPACE) && localName.equals(ELEM_LINK)) {
             AttributesImpl attrs = new AttributesImpl(attr);
             String href = attrs.getValue(ATTR_HREF);
             try {
@@ -133,14 +149,14 @@
     }
 
     protected boolean isFolderNode(Document doc) throws MetaDataException {
-        MetaData meta = doc.getMetaData(NAMESPACE);
+        CacheableMetaData meta = getMetaData(doc);
         String value = meta.getFirstValue(ELEM_FOLDER_NODE);
         boolean isFolderNode = value != null && Boolean.valueOf(value).booleanValue();
         return isFolderNode;
     }
 
     protected String getExternalLink(Document doc) throws MetaDataException {
-        MetaData meta = doc.getMetaData(NAMESPACE);
+        CacheableMetaData meta = getMetaData(doc);
         return meta.getFirstValue(ELEM_EXTERNAL_LINK);
     }
 
@@ -155,6 +171,52 @@
             link.setPubId(this.area.getPublication().getId());
         }
         return link.getUri();
+    }
+
+    protected CacheableMetaData getMetaData(Document doc) throws MetaDataException {
+        CacheableMetaData cacheableMeta = null;
+        String key = doc.getRepositoryNode().getSourceURI();
+        MRUMemoryStore cache = getCache();
+        MetaData meta = doc.getMetaData(NAMESPACE);
+        if (cache.containsKey(key)) {
+            cacheableMeta = (CacheableMetaData) cache.get(key);
+            if (meta.getLastModified() > cacheableMeta.getLastModified()) {
+                cacheableMeta = null;
+            }
+        }
+        if (cacheableMeta == null) {
+            cacheableMeta = new CacheableMetaData(meta);
+            cache.hold(key, cacheableMeta);
+        }
+        return cacheableMeta;
+    }
+
+    protected static class CacheableMetaData {
+
+        private Map map = new HashMap();
+        private long lastModified;
+
+        public CacheableMetaData(MetaData meta) throws MetaDataException {
+            this.lastModified = meta.getLastModified();
+            String[] keys = meta.getAvailableKeys();
+            for (int i = 0; i < keys.length; i++) {
+                this.map.put(keys[i], meta.getValues(keys[i]));
+            }
+        }
+
+        public String getFirstValue(String key) {
+            String[] values = (String[]) this.map.get(key);
+            if (values != null && values.length > 0) {
+                return values[0];
+            } else {
+                return null;
+            }
+        }
+        
+        public long getLastModified() {
+            return this.lastModified;
+        }
+
     }
 
 }



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