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 package eu.etaxonomy.cdm.persistence.fetch;
  10
  11 import org.apache.logging.log4j.LogManager;
  12 import org.apache.logging.log4j.Logger;
  13
  14 /**
  15  * @author a.mueller
  16  * @since 30.04.2008
  17  */
  18 public class CdmFetch {
  19         private static final Logger logger = LogManager.getLogger();
  20
  21         public static CdmFetch NO_FETCH() {return new CdmFetch(0);}
  22         public static CdmFetch FETCH_NOTHING() {return new CdmFetch(0);}
  23
  24         public static CdmFetch FETCH_DESCRIPTIONS() {return new CdmFetch(1);}
  25         public static CdmFetch FETCH_CHILDTAXA() {return  new CdmFetch(2);}
  26         public static CdmFetch FETCH_PARENT_TAXA() {return  new CdmFetch(3);}
  27         public static CdmFetch FETCH_ANNOTATIONS_ALL() {return  new CdmFetch(4);}
  28         public static CdmFetch FETCH_MARKER_ALL() {return  new CdmFetch(5);}
  29         public static CdmFetch FETCH_SYNONYMS() {return  new CdmFetch(6);}
  30
  31         protected int fetchSum;
  32
  33         private CdmFetch(int fetchId) {
  34                 this.fetchSum = (int)Math.pow(2, fetchId);
  35         }
  36
  37         public void add(CdmFetch cdmFetch) {
  38                 this.fetchSum = (this.fetchSum | cdmFetch.fetchSum);
  39         }
  40
  41         public boolean includes(CdmFetch cdmFetch){
  42                 int andFetch = cdmFetch.fetchSum & this.fetchSum;
  43                 if (andFetch == cdmFetch.fetchSum){
  44                         return true;
  45                 }else{
  46                         return false;
  47                 }
  48         }
  49
  50         public static void main(String[] args) {
  51                 CdmFetch fetch1 = FETCH_DESCRIPTIONS();
  52                 CdmFetch fetch2 = FETCH_MARKER_ALL();
  53                 CdmFetch fetch3 = FETCH_SYNONYMS();
  54                 CdmFetch fetch4 = FETCH_DESCRIPTIONS();
  55
  56                 fetch1.add(fetch2);
  57                 logger.warn(fetch3.includes(fetch1));
  58                 logger.warn(fetch1.includes(fetch2));
  59                 logger.warn(fetch2.includes(fetch1));
  60                 fetch2.add(fetch3);
  61                 logger.warn(fetch2.includes(fetch1));
  62                 fetch2.add(fetch3);
  63                 logger.warn(fetch1.includes(fetch4));
  64         }
  65 }