org.argeo.slc/src/main/java/org/argeo/slc/core/structure/tree/TreeSRegistry.java

   1 package org.argeo.slc.core.structure.tree;
   2
   3 import java.util.List;
   4 import java.util.Vector;
   5
   6 import org.apache.commons.logging.Log;
   7 import org.apache.commons.logging.LogFactory;
   8
   9 import org.argeo.slc.core.structure.StructureAware;
  10 import org.argeo.slc.core.structure.StructureElement;
  11 import org.argeo.slc.core.structure.StructurePath;
  12 import org.argeo.slc.core.structure.StructureRegistry;
  13
  14 public class TreeSRegistry implements StructureRegistry {
  15         private static Log log = LogFactory.getLog(TreeSRegistry.class);
  16
  17         private List<TreeSElement> elements = new Vector<TreeSElement>();
  18         private List<TreeSPath> paths = new Vector<TreeSPath>();
  19
  20         public List<StructureElement> listElements() {
  21                 return new Vector<StructureElement>(elements);
  22         }
  23
  24         public void register(StructureElement element) {
  25                 TreeSElement treeSElement = checkElement(element);
  26                 elements.add(treeSElement);
  27                 paths.add((TreeSPath) treeSElement.getPath());
  28                 log.debug("Registered " + treeSElement.getPath() + " (desc: "
  29                                 + treeSElement.getDescription() + " position: "
  30                                 + elements.size() + ")");
  31         }
  32
  33         public void register(StructureAware structureAware) {
  34                 register(structureAware.getElement());
  35                 structureAware.onRegister(this);
  36         }
  37
  38         public StructureElement getElement(StructurePath path) {
  39                 int index = paths.indexOf(path);
  40                 if (index >= 0) {
  41                         return elements.get(index);
  42                 } else {// not found
  43                         return null;
  44                 }
  45         }
  46
  47         protected TreeSElement checkElement(StructureElement element) {
  48                 if (!(element instanceof TreeSElement)) {
  49                         throw new RuntimeException("Element class " + element.getClass()
  50                                         + " is not supported.");
  51                 }
  52                 return (TreeSElement) element;
  53         }
  54 }