[jboss-cvs] JBossCache/migration/examples/cacheloader-migration/src/examples ...

[Galder Zamarreno]

  User: gzamarreno
  Date: 07/03/07 18:32:06

  Added:       migration/examples/cacheloader-migration/src/examples 
                        TransformStore.java
  Log:
  [JBCACHE-964] Work committed:
  - Transforming Cache Loaders implemented and unit tests provided
  - migration folder structure. See JIRA.
  - build.xml modified to compile, jar, create manifest for migration jar
  and also added examples and migration jar to distros.
  - example created and tested; it includes readme.txt with details of the
  example and how to run it.
  Still TODO:
  - Unit tests for transforming cache loaders need to run from build.xml
  - Documentation for transforming cache loaders in users guide, what are
  they, when to use them,...etc.
  - Fix JBCACHE-877 that occurrs when unzipping JBossCache-core-2.0.0.BETA2.zip 
  and running the examples. Workaround is to bring trove.jar into its lib.
  - Get examples/cacheloader-migration/build.sh working
  - Move JDBCCacheLoaderOld to the migration side. It's not that straightforward due to classes in
  /src having dependencies on it. Needs further study.
  
  Revision  Changes    Path
  1.1      date: 2007/03/07 23:32:06;  author: gzamarreno;  state: Exp;JBossCache/migration/examples/cacheloader-migration/src/examples/TransformStore.java
  
  Index: TransformStore.java
  ===================================================================
  /*
   * JBoss, the OpenSource J2EE webOS
   * 
   * Distributable under LGPL license.
   * See terms of license at gnu.org.
   */
  package examples;
  
  import org.jboss.cache.DefaultCacheFactory;
  import org.jboss.cache.Cache;
  import org.jboss.cache.Node;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  /**
   * Cache store transforming example
   *
   * @author <a href="mailto:galder.zamarreno at jboss.com">Galder Zamarreno</a>
   */
  public class TransformStore
  {
     /* Type of cache loader, either use "jdbccl" for JDBCCacheLoader or "fcl" for FileCacheLoader */   
     public static final String CL_TYPE = System.getProperty("cacheloader.type", "jdbccl");
  
     private static Log log = LogFactory.getLog(TransformStore.class);
     
     public static void main(String[] args) throws Exception
     {
        TransformStore ts = new TransformStore();
  
        String transformConfigName = "transform-" + CL_TYPE + "-service.xml";
        log.info("Transforming configuration file: " + transformConfigName);
        Cache transformingCache = ts.createAndStartCache(transformConfigName);
        ts.transformCacheStore(transformingCache);
        ts.stopAndDestroyCache(transformingCache);
  
        String originalConfigName = "original-" + CL_TYPE + "-service.xml";
        log.info("Original configuration file: " + originalConfigName);
        Cache checkingCache = ts.createAndStartCache(originalConfigName);
        ts.checkCacheStore(checkingCache);
        ts.stopAndDestroyCache(checkingCache);
     }
  
     public Cache createAndStartCache(String configFile)
     {
        return DefaultCacheFactory.getInstance().createCache(configFile, true);
     }
  
     public void stopAndDestroyCache(Cache cache)
     {
        cache.stop();
        cache.destroy();
     }   
  
     public void transformCacheStore(Cache cache)
     {
        log.info("Transforming 1.x cache store");
        transformNode(cache, cache.getRoot());
        log.info("Cache store transformed to 2.x format");
     }
  
     public void transformNode(Cache cache, Node node)
     {
        cache.put(node.getFqn(), node.getData());
        log.info(node.getFqn() + " transformed");               
  
        for (Node child : node.getChildren())
        {
           transformNode(cache, child);
        }
     }
  
     public void checkCacheStore(Cache cache)
     {
        checkNode(cache, cache.getRoot());
     }
  
     public void checkNode(Cache cache, Node node)
     {
        log.info("Node: " + node.getFqn() + " | Data: " + node.getData());
  
        for (Node child : node.getChildren())
        {
           checkNode(cache, child);
        }
     }
  }