eu.etaxonomy.taxeditor.remoting/src/main/java/eu/etaxonomy/cdm/api/cache/LazyLoadingCachingUtils.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2014 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10 package eu.etaxonomy.cdm.api.cache;
  11
  12 import java.util.Iterator;
  13 import java.util.Map;
  14
  15 import org.hibernate.collection.internal.PersistentMap;
  16 import org.springframework.beans.factory.annotation.Autowired;
  17 import org.springframework.stereotype.Component;
  18
  19 import eu.etaxonomy.cdm.model.common.CdmBase;
  20
  21 /**
  22  * @author cmathew
  23  * @date 15 Oct 2014
  24  *
  25  */
  26 @Component
  27 public class LazyLoadingCachingUtils {
  28
  29     @Autowired
  30     private CdmEntityCacheManager cdmEntityCacheManager;
  31
  32     public static enum CollectionType {
  33         SET,
  34         LIST,
  35         MAP;
  36
  37         @Override
  38         public String toString() {
  39             return this.name().toLowerCase();
  40         }
  41     }
  42
  43     public void updatePersistentCollection(Map map) {
  44         if(map == null || map.isEmpty()) {
  45             return;
  46         }
  47
  48         int originalMapSize = map.size();
  49         Object[] result = new Object[ map.size() * 2 ];
  50         Iterator iter = map.entrySet().iterator();
  51         int i=0;
  52         while ( iter.hasNext() ) {
  53             Map.Entry e = (Map.Entry) iter.next();
  54             result[i++] = e.getKey();
  55             result[i++] = e.getValue();
  56         }
  57
  58         for(i=0; i<result.length;i++) {
  59             if(result[i] instanceof CdmBase) {
  60                 CdmBase cdmBase = (CdmBase)result[i];
  61                 CdmBase cachedCdmBase = cdmEntityCacheManager.getCdmTransientEntityCacher().put(cdmBase.getClass(),cdmBase.getId(), cdmBase);
  62                 result[i] = cachedCdmBase;
  63             }
  64         }
  65         map.clear();
  66         for(i = 0; i < originalMapSize; i+=2 ) {
  67             map.put(
  68                     result[i],
  69                     result[i+1]
  70                 );
  71         }
  72
  73     }
  74
  75
  76
  77 }