opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/DOMImmutableDataChangeEvent.java

   1 package org.opendaylight.controller.md.sal.dom.store.impl;
   2
   3 import java.util.Map;
   4 import java.util.Set;
   5
   6 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
   7 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
   8 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
   9
  10 import com.google.common.collect.ImmutableMap;
  11 import com.google.common.collect.ImmutableSet;
  12
  13 public final class DOMImmutableDataChangeEvent implements
  14         AsyncDataChangeEvent<InstanceIdentifier, NormalizedNode<?, ?>> {
  15
  16     private final NormalizedNode<?, ?> original;
  17     private final NormalizedNode<?, ?> updated;
  18     private final Map<InstanceIdentifier, ? extends NormalizedNode<?, ?>> originalData;
  19     private final Map<InstanceIdentifier, NormalizedNode<?, ?>> createdData;
  20     private final Map<InstanceIdentifier, NormalizedNode<?, ?>> updatedData;
  21     private final Set<InstanceIdentifier> removedPaths;
  22
  23     private DOMImmutableDataChangeEvent(final Builder change) {
  24         original = change.before;
  25         updated = change.after;
  26         originalData = change.original.build();
  27         createdData = change.created.build();
  28         updatedData = change.updated.build();
  29         removedPaths = change.removed.build();
  30     }
  31
  32     public static final Builder builder() {
  33         return new Builder();
  34     }
  35
  36     @Override
  37     public NormalizedNode<?, ?> getOriginalSubtree() {
  38         return original;
  39     }
  40
  41     @Override
  42     public NormalizedNode<?, ?> getUpdatedSubtree() {
  43         return updated;
  44     }
  45
  46     @Override
  47     public Map<InstanceIdentifier, ? extends NormalizedNode<?, ?>> getOriginalData() {
  48         return originalData;
  49     }
  50
  51     @Override
  52     public Map<InstanceIdentifier, NormalizedNode<?, ?>> getCreatedData() {
  53         return createdData;
  54     }
  55
  56     @Override
  57     public Map<InstanceIdentifier, NormalizedNode<?, ?>> getUpdatedData() {
  58         return updatedData;
  59     }
  60
  61     @Override
  62     public Set<InstanceIdentifier> getRemovedPaths() {
  63         return removedPaths;
  64     }
  65
  66     @Override
  67     public String toString() {
  68         return "DOMImmutableDataChangeEvent [created=" + createdData.keySet() + ", updated=" + updatedData.keySet()
  69                 + ", removed=" + removedPaths + "]";
  70     }
  71
  72     public static class Builder {
  73
  74         private NormalizedNode<?, ?> after;
  75         private NormalizedNode<?, ?> before;
  76
  77         private final ImmutableMap.Builder<InstanceIdentifier, NormalizedNode<?, ?>> original = ImmutableMap.builder();
  78         private final ImmutableMap.Builder<InstanceIdentifier, NormalizedNode<?, ?>> created = ImmutableMap.builder();
  79         private final ImmutableMap.Builder<InstanceIdentifier, NormalizedNode<?, ?>> updated = ImmutableMap.builder();
  80         private final ImmutableSet.Builder<InstanceIdentifier> removed = ImmutableSet.builder();
  81
  82         private Builder() {
  83
  84         }
  85
  86         public Builder setAfter(final NormalizedNode<?, ?> node) {
  87             after = node;
  88             return this;
  89         }
  90
  91         public DOMImmutableDataChangeEvent build() {
  92
  93             return new DOMImmutableDataChangeEvent(this);
  94         }
  95
  96         public void merge(final DOMImmutableDataChangeEvent nestedChanges) {
  97
  98             original.putAll(nestedChanges.getOriginalData());
  99             created.putAll(nestedChanges.getCreatedData());
 100             updated.putAll(nestedChanges.getUpdatedData());
 101             removed.addAll(nestedChanges.getRemovedPaths());
 102
 103         }
 104
 105         public Builder setBefore(final NormalizedNode<?, ?> node) {
 106             this.before = node;
 107             return this;
 108         }
 109
 110         public Builder addCreated(final InstanceIdentifier path, final NormalizedNode<?, ?> node) {
 111             created.put(path, node);
 112             return this;
 113         }
 114
 115         public Builder addRemoved(final InstanceIdentifier path, final NormalizedNode<?, ?> node) {
 116             original.put(path, node);
 117             removed.add(path);
 118             return this;
 119         }
 120
 121         public Builder addUpdated(final InstanceIdentifier path, final NormalizedNode<?, ?> before,
 122                 final NormalizedNode<?, ?> after) {
 123             original.put(path, before);
 124             updated.put(path, after);
 125             return this;
 126         }
 127     }
 128
 129 }