opendaylight/sal/yang-prototype/yang/yang-model-util/src/main/java/org/opendaylight/controller/yang/model/util/DataNodeIterator.java

   1 package org.opendaylight.controller.yang.model.util;
   2
   3 import java.util.ArrayList;
   4 import java.util.Iterator;
   5 import java.util.List;
   6 import java.util.Set;
   7
   8 import org.opendaylight.controller.yang.model.api.ContainerSchemaNode;
   9 import org.opendaylight.controller.yang.model.api.DataNodeContainer;
  10 import org.opendaylight.controller.yang.model.api.DataSchemaNode;
  11 import org.opendaylight.controller.yang.model.api.LeafListSchemaNode;
  12 import org.opendaylight.controller.yang.model.api.LeafSchemaNode;
  13 import org.opendaylight.controller.yang.model.api.ListSchemaNode;
  14
  15 public class DataNodeIterator implements Iterator<DataSchemaNode> {
  16
  17     private final DataNodeContainer container;
  18     private List<ListSchemaNode> allLists;
  19     private List<ContainerSchemaNode> allContainers;
  20     private List<LeafSchemaNode> allLeafs;
  21     private List<LeafListSchemaNode> allLeafLists;
  22     private List<DataSchemaNode> allChilds;
  23
  24     public DataNodeIterator(final DataNodeContainer container) {
  25         if (container == null) {
  26             throw new IllegalArgumentException("Data Node Container MUST be specified and cannot be NULL!");
  27         }
  28
  29         init();
  30         this.container = container;
  31         traverse(this.container);
  32     }
  33
  34     private void init() {
  35         this.allContainers = new ArrayList<ContainerSchemaNode>();
  36         this.allLists = new ArrayList<ListSchemaNode>();
  37         this.allLeafs = new ArrayList<LeafSchemaNode>();
  38         this.allLeafLists = new ArrayList<LeafListSchemaNode>();
  39         this.allChilds = new ArrayList<DataSchemaNode>();
  40     }
  41
  42     public List<ContainerSchemaNode> allContainers() {
  43         return allContainers;
  44     }
  45
  46     public List<ListSchemaNode> allLists() {
  47         return allLists;
  48     }
  49
  50     public List<LeafSchemaNode> allLeafs() {
  51         return allLeafs;
  52     }
  53
  54     public List<LeafListSchemaNode> allLeafLists() {
  55         return allLeafLists;
  56     }
  57
  58     private void traverse(final DataNodeContainer dataNode) {
  59         if (dataNode == null) {
  60             return;
  61         }
  62
  63         final Set<DataSchemaNode> childs = dataNode.getChildNodes();
  64         if (childs != null) {
  65             for (DataSchemaNode childNode : childs) {
  66                 if (childNode.isAugmenting()) {
  67                     continue;
  68                 }
  69                 allChilds.add(childNode);
  70                 if (childNode instanceof ContainerSchemaNode) {
  71                     final ContainerSchemaNode container = (ContainerSchemaNode) childNode;
  72                     allContainers.add(container);
  73                     traverse(container);
  74                 } else if (childNode instanceof ListSchemaNode) {
  75                     final ListSchemaNode list = (ListSchemaNode) childNode;
  76                     allLists.add(list);
  77                     traverse(list);
  78                 } else if (childNode instanceof LeafSchemaNode) {
  79                     final LeafSchemaNode leaf = (LeafSchemaNode) childNode;
  80                     allLeafs.add(leaf);
  81                 } else if (childNode instanceof LeafListSchemaNode) {
  82                     final LeafListSchemaNode leafList = (LeafListSchemaNode) childNode;
  83                     allLeafLists.add(leafList);
  84                 }
  85             }
  86             return;
  87         }
  88     }
  89
  90     @Override
  91     public boolean hasNext() {
  92         if (container.getChildNodes() != null) {
  93             Set<DataSchemaNode> childs = container.getChildNodes();
  94
  95             if ((childs != null) && !childs.isEmpty()) {
  96                 return childs.iterator().hasNext();
  97             }
  98         }
  99         return false;
 100     }
 101
 102     @Override
 103     public DataSchemaNode next() {
 104         return allChilds.iterator().next();
 105     }
 106
 107     @Override
 108     public void remove() {
 109         throw new UnsupportedOperationException();
 110     }
 111 }