cdmlib-persistence/src/main/java/eu/etaxonomy/cdm/persistence/fetch/CdmFetch.java

   1 /**
   2  * Copyright (C) 2007 EDIT
   3  * European Distributed Institute of Taxonomy
   4  * http://www.e-taxonomy.eu
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version 1.1
   7  * See LICENSE.TXT at the top of this package for the full license terms.
   8  */
   9
  10 package eu.etaxonomy.cdm.persistence.fetch;
  11
  12 import org.apache.log4j.Logger;
  13
  14
  15 /**
  16  * @author a.mueller
  17  * @created 30.04.2008
  18  * @version 1.0
  19  */
  20 public class CdmFetch {
  21         private static final Logger logger = Logger.getLogger(CdmFetch.class);
  22
  23         public static CdmFetch NO_FETCH() {return new CdmFetch(0);}
  24         public static CdmFetch FETCH_NOTHING() {return new CdmFetch(0);}
  25
  26         public static CdmFetch FETCH_DESCRIPTIONS() {return new CdmFetch(1);}
  27         public static CdmFetch FETCH_CHILDTAXA() {return  new CdmFetch(2);}
  28         public static CdmFetch FETCH_PARENT_TAXA() {return  new CdmFetch(3);}
  29         public static CdmFetch FETCH_ANNOTATIONS_ALL() {return  new CdmFetch(4);}
  30         public static CdmFetch FETCH_MARKER_ALL() {return  new CdmFetch(5);}
  31         public static CdmFetch FETCH_SYNONYMS() {return  new CdmFetch(6);}
  32
  33         protected int fetchSum;
  34
  35         private CdmFetch(int fetchId) {
  36                 this.fetchSum = (int)Math.pow(2, fetchId);
  37         }
  38
  39         public void add(CdmFetch cdmFetch) {
  40                 this.fetchSum = (this.fetchSum | cdmFetch.fetchSum);
  41         }
  42
  43         public boolean includes(CdmFetch cdmFetch){
  44                 int andFetch = cdmFetch.fetchSum & this.fetchSum;
  45                 if (andFetch == cdmFetch.fetchSum){
  46                         return true;
  47                 }else{
  48                         return false;
  49                 }
  50         }
  51
  52         /**
  53          * @param args
  54          */
  55         public static void main(String[] args) {
  56                 CdmFetch fetch1 = FETCH_DESCRIPTIONS();
  57                 CdmFetch fetch2 = FETCH_MARKER_ALL();
  58                 CdmFetch fetch3 = FETCH_SYNONYMS();
  59                 CdmFetch fetch4 = FETCH_DESCRIPTIONS();
  60
  61                 fetch1.add(fetch2);
  62                 logger.warn(fetch3.includes(fetch1));
  63                 logger.warn(fetch1.includes(fetch2));
  64                 logger.warn(fetch2.includes(fetch1));
  65                 fetch2.add(fetch3);
  66                 logger.warn(fetch2.includes(fetch1));
  67                 fetch2.add(fetch3);
  68                 logger.warn(fetch1.includes(fetch4));
  69         }
  70
  71 }