opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/DataNodeContainerModificationStrategy.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.md.sal.dom.store.impl.tree.data;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11
  12 import java.util.HashSet;
  13 import java.util.Set;
  14 import java.util.concurrent.ExecutionException;
  15
  16 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.AugmentationIdentifier;
  17 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
  18 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
  19 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  20 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  21 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  22 import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
  23 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
  24 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableAugmentationNodeBuilder;
  25 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableContainerNodeBuilder;
  26 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapEntryNodeBuilder;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableUnkeyedListEntryNodeBuilder;
  28 import org.opendaylight.yangtools.yang.data.impl.schema.transform.base.AugmentationSchemaProxy;
  29 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
  30 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
  31 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  32 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
  33 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  34 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  35
  36 import com.google.common.base.Function;
  37 import com.google.common.base.Optional;
  38 import com.google.common.cache.CacheBuilder;
  39 import com.google.common.cache.CacheLoader;
  40 import com.google.common.cache.LoadingCache;
  41
  42 abstract class DataNodeContainerModificationStrategy<T extends DataNodeContainer> extends NormalizedNodeContainerModificationStrategy {
  43
  44     private final T schema;
  45     private final LoadingCache<PathArgument, ModificationApplyOperation> childCache = CacheBuilder.newBuilder()
  46             .build(CacheLoader.from(new Function<PathArgument, ModificationApplyOperation>() {
  47
  48                 @Override
  49                 public ModificationApplyOperation apply(final PathArgument identifier) {
  50                     if (identifier instanceof AugmentationIdentifier && schema instanceof AugmentationTarget) {
  51                         return from(schema, (AugmentationTarget) schema, (AugmentationIdentifier) identifier);
  52                     }
  53
  54                     DataSchemaNode child = schema.getDataChildByName(identifier.getNodeType());
  55                     if (child == null) {
  56                         return null;
  57                     }
  58                     return from(child);
  59                 }
  60             }));
  61
  62     protected DataNodeContainerModificationStrategy(final T schema,
  63             final Class<? extends NormalizedNode<?, ?>> nodeClass) {
  64         super(nodeClass);
  65         this.schema = schema;
  66     }
  67
  68     protected T getSchema() {
  69         return schema;
  70     }
  71
  72     @Override
  73     public Optional<ModificationApplyOperation> getChild(final PathArgument identifier) {
  74         try {
  75             return Optional.<ModificationApplyOperation> fromNullable(childCache.get(identifier));
  76         } catch (ExecutionException e) {
  77             return Optional.absent();
  78         }
  79     }
  80
  81     @Override
  82     @SuppressWarnings("rawtypes")
  83     protected abstract DataContainerNodeBuilder createBuilder(NormalizedNode<?, ?> original);
  84
  85     @Override
  86     public String toString() {
  87         return getClass().getSimpleName() + " [" + schema + "]";
  88     }
  89
  90     public static class AugmentationModificationStrategy extends DataNodeContainerModificationStrategy<AugmentationSchema> {
  91
  92         protected AugmentationModificationStrategy(final AugmentationSchema schema, final DataNodeContainer resolved) {
  93             super(createAugmentProxy(schema,resolved), AugmentationNode.class);
  94         }
  95
  96         @Override
  97         @SuppressWarnings("rawtypes")
  98         protected DataContainerNodeBuilder createBuilder(final NormalizedNode<?, ?> original) {
  99             checkArgument(original instanceof AugmentationNode);
 100             return ImmutableAugmentationNodeBuilder.create((AugmentationNode) original);
 101         }
 102
 103
 104         private static AugmentationSchema createAugmentProxy(final AugmentationSchema schema, final DataNodeContainer resolved) {
 105             Set<DataSchemaNode> realChildSchemas = new HashSet<>();
 106             for(DataSchemaNode augChild : schema.getChildNodes()) {
 107                 realChildSchemas.add(resolved.getDataChildByName(augChild.getQName()));
 108             }
 109             return new AugmentationSchemaProxy(schema, realChildSchemas);
 110         }
 111     }
 112
 113     public static class ContainerModificationStrategy extends DataNodeContainerModificationStrategy<ContainerSchemaNode> {
 114
 115         public ContainerModificationStrategy(final ContainerSchemaNode schemaNode) {
 116             super(schemaNode, ContainerNode.class);
 117         }
 118
 119         @Override
 120         @SuppressWarnings("rawtypes")
 121         protected DataContainerNodeBuilder createBuilder(final NormalizedNode<?, ?> original) {
 122             checkArgument(original instanceof ContainerNode);
 123             return ImmutableContainerNodeBuilder.create((ContainerNode) original);
 124         }
 125     }
 126
 127     public static class ListEntryModificationStrategy extends DataNodeContainerModificationStrategy<ListSchemaNode> {
 128
 129         protected ListEntryModificationStrategy(final ListSchemaNode schema) {
 130             super(schema, MapEntryNode.class);
 131         }
 132
 133         @Override
 134         @SuppressWarnings("rawtypes")
 135         protected final DataContainerNodeBuilder createBuilder(final NormalizedNode<?, ?> original) {
 136             checkArgument(original instanceof MapEntryNode);
 137             return ImmutableMapEntryNodeBuilder.create((MapEntryNode) original);
 138         }
 139     }
 140
 141     public static class UnkeyedListItemModificationStrategy extends DataNodeContainerModificationStrategy<ListSchemaNode> {
 142
 143         public UnkeyedListItemModificationStrategy(final ListSchemaNode schemaNode) {
 144             super(schemaNode, UnkeyedListEntryNode.class);
 145         }
 146
 147         @Override
 148         @SuppressWarnings("rawtypes")
 149         protected DataContainerNodeBuilder createBuilder(final NormalizedNode<?, ?> original) {
 150             checkArgument(original instanceof UnkeyedListEntryNode);
 151             return ImmutableUnkeyedListEntryNodeBuilder.create((UnkeyedListEntryNode) original);
 152         }
 153     }
 154 }