runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/structure/tree/TreeSRelatedHelper.java

   1 package org.argeo.slc.core.structure.tree;
   2
   3 import org.argeo.slc.core.structure.SimpleSElement;
   4 import org.argeo.slc.structure.StructureAware;
   5 import org.argeo.slc.structure.StructureElement;
   6 import org.argeo.slc.structure.StructureRegistry;
   7
   8 /**
   9  * Provides default implementations of some methods of <code>TreeSRelated</code>
  10  * .
  11  */
  12 public abstract class TreeSRelatedHelper implements TreeSRelated {
  13         private TreeSPath basePath;
  14         private StructureRegistry<TreeSPath> registry;
  15
  16         // private ThreadLocal<TreeSPath> basePath = new ThreadLocal<TreeSPath>();
  17         // private ThreadLocal<StructureRegistry<TreeSPath>> registry = new
  18         // ThreadLocal<StructureRegistry<TreeSPath>>();
  19
  20         public TreeSPath getBasePath() {
  21                 return basePath;
  22         }
  23
  24         public StructureRegistry<TreeSPath> getRegistry() {
  25                 return registry;
  26         }
  27
  28         public void notifyCurrentPath(StructureRegistry<TreeSPath> registry,
  29                         TreeSPath path) {
  30                 this.basePath = path;
  31                 this.registry = registry;
  32         }
  33
  34         public StructureElement getStructureElement(String key) {
  35                 return new SimpleSElement(key);
  36         }
  37
  38         /**
  39          * Checks wether the object is {@link StructureAware} and forward path and
  40          * registry. null safe for both arguments.
  41          */
  42         @SuppressWarnings(value = { "unchecked" })
  43         protected void forwardPath(Object obj, String childName) {
  44                 if (obj == null)
  45                         return;
  46
  47                 if (obj instanceof StructureAware && basePath != null) {
  48                         TreeSPath path;
  49                         if (childName != null)
  50                                 path = basePath.createChild(childName);
  51                         else
  52                                 path = basePath;
  53
  54                         ((StructureAware<TreeSPath>) obj).notifyCurrentPath(registry, path);
  55                 }
  56         }
  57
  58 }