cdmlib-model/src/main/java/eu/etaxonomy/cdm/strategy/StrategyBase.java

   1 /**
   2 * Copyright (C) 2009 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.strategy;
  11
  12 import java.io.Serializable;
  13 import java.net.URI;
  14 import java.util.Collection;
  15 import java.util.UUID;
  16
  17 import org.apache.commons.lang.StringUtils;
  18 import org.apache.log4j.Logger;
  19 import org.joda.time.DateTime;
  20
  21 import eu.etaxonomy.cdm.common.CdmUtils;
  22 import eu.etaxonomy.cdm.common.DOI;
  23 import eu.etaxonomy.cdm.model.agent.Contact;
  24 import eu.etaxonomy.cdm.model.common.CdmBase;
  25 import eu.etaxonomy.cdm.model.common.LSID;
  26 import eu.etaxonomy.cdm.model.common.TimePeriod;
  27
  28
  29 public abstract class StrategyBase implements IStrategy, Serializable {
  30         private static final long serialVersionUID = -274791080847215663L;
  31         @SuppressWarnings("unused")
  32         private static final Logger logger = Logger.getLogger(StrategyBase.class);
  33
  34         final static UUID uuid = UUID.fromString("2ff2b1d6-17a6-4807-a55f-f6b45bf429b7");
  35
  36         abstract protected UUID getUuid();
  37
  38         protected StrategyBase(){
  39         }
  40
  41
  42
  43
  44         /**
  45          * @param fieldType
  46          * @return
  47          */
  48         protected static boolean isCollection(Class<?> fieldType) {
  49                 if (Collection.class.isAssignableFrom(fieldType) ){
  50                         return true;
  51                 }else{
  52                         return false;
  53                 }
  54         }
  55
  56         /**
  57          * @param fieldType
  58          * @return
  59          */
  60         protected boolean isPrimitive(Class<?> fieldType) {
  61                 if (fieldType.isPrimitive()){
  62                         return true;
  63                 }else{
  64                         return false;
  65                 }
  66         }
  67
  68         /**
  69          * @param fieldType
  70          * @return
  71          */
  72         protected boolean isSingleCdmBaseObject(Class<?> fieldType) {
  73                 if (CdmBase.class.isAssignableFrom(fieldType)){
  74                         return true;
  75                 }else{
  76                         return false;
  77                 }
  78         }
  79
  80         /**
  81          * @param fieldType
  82          * @return
  83          */
  84         protected boolean isUserType(Class<?> fieldType) {
  85                 if (    fieldType == TimePeriod.class ||
  86                                 fieldType == DateTime.class ||
  87                                 fieldType == LSID.class ||
  88                                 fieldType == Contact.class ||
  89                                 fieldType == URI.class ||
  90                                 fieldType == DOI.class
  91                         ){
  92                                 return true;
  93                 }else{
  94                         return false;
  95                 }
  96         }
  97
  98
  99         /**
 100          * Null safe string. Returns the given string if it is not <code>null</code>.
 101          * Empty string otherwise.
 102          * @see CdmUtils#Nz(String)
 103          * @return the null-safe string
 104          */
 105         protected String Nz(String str){
 106                 return CdmUtils.Nz(str);
 107         }
 108
 109         /**
 110          * Checks if a string is not blank.
 111          * @see StringUtils#isNotBlank(String)
 112          */
 113         protected boolean isNotBlank(String str){
 114                 return StringUtils.isNotBlank(str);
 115         }
 116
 117         /**
 118          * Checks if a string is blank.
 119          * @see StringUtils#isNotBlank(String)
 120          */
 121         protected boolean isBlank(String str){
 122                 return StringUtils.isBlank(str);
 123         }
 124
 125
 126
 127 }