cdmlib-model/src/main/java/eu/etaxonomy/cdm/model/CdmAssignableTypeFilter.java

   1 /**
   2 * Copyright (C) 2014 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.model;
  10
  11 import org.springframework.core.type.filter.AbstractTypeHierarchyTraversingFilter;
  12
  13 /**
  14  * Special implementation for the cdm which allows to also match
  15  * abstract base types and interfaces in eu.etaxonomy.cdm.model.
  16  *
  17  *
  18  * @author a.kohlbecker
  19  * @since Jul 31, 2014
  20  *
  21  */
  22 public class CdmAssignableTypeFilter extends AbstractTypeHierarchyTraversingFilter {
  23
  24
  25     private final Class targetType;
  26
  27     /**
  28      * @param targetType
  29      */
  30     public CdmAssignableTypeFilter(Class targetType, boolean considerInherited, boolean considerInterfaces) {
  31         super(considerInherited, considerInterfaces);
  32         this.targetType = targetType;
  33     }
  34
  35     @Override
  36     protected boolean matchClassName(String className) {
  37         return this.targetType.getName().equals(className);
  38     }
  39
  40     @Override
  41     protected Boolean matchSuperClass(String superClassName) {
  42         return matchTargetType(superClassName);
  43     }
  44
  45     @Override
  46     protected Boolean matchInterface(String interfaceName) {
  47         return matchTargetType(interfaceName);
  48     }
  49
  50
  51     protected Boolean matchTargetType(String typeName) {
  52         if (this.targetType.getName().equals(typeName)) {
  53             return true;
  54         }
  55         else if (Object.class.getName().equals(typeName)) {
  56             return Boolean.FALSE;
  57         }
  58         else if (typeName.startsWith("eu.etaxonomy.cdm.model.")) {
  59             try {
  60                 Class clazz = getClass().getClassLoader().loadClass(typeName);
  61                 return Boolean.valueOf(this.targetType.isAssignableFrom(clazz));
  62             }
  63             catch (ClassNotFoundException ex) {
  64                 // Class not found - can't determine a match that way.
  65             }
  66         }
  67         return null;
  68     }
  69
  70 }