restconf/restconf-nb-bierman02/src/main/java/org/opendaylight/netconf/sal/restconf/impl/DataNormalizationOperation.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.netconf.sal.restconf.impl;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.collect.ImmutableMap;
  12 import com.google.common.collect.ImmutableSet;
  13 import com.google.common.collect.Iterables;
  14 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  15 import java.util.Collections;
  16 import java.util.HashSet;
  17 import java.util.List;
  18 import java.util.Map;
  19 import java.util.Map.Entry;
  20 import java.util.Set;
  21 import java.util.concurrent.ConcurrentHashMap;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.gaul.modernizer_maven_annotations.SuppressModernizer;
  24 import org.opendaylight.yangtools.concepts.Identifiable;
  25 import org.opendaylight.yangtools.yang.common.QName;
  26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
  27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  28 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  29 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
  30 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  31 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
  32 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  33 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  34 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
  35 import org.opendaylight.yangtools.yang.model.api.AnyxmlSchemaNode;
  36 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
  37 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
  38 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
  39 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  40 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  41 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
  42 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  43 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  44 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  45 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  46 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  47 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
  48 import org.opendaylight.yangtools.yang.model.util.EffectiveAugmentationSchema;
  49
  50 abstract class DataNormalizationOperation<T extends PathArgument> implements Identifiable<T> {
  51     private final T identifier;
  52     private final DataSchemaNode dataSchemaNode;
  53
  54     @Override
  55     public T getIdentifier() {
  56         return identifier;
  57     }
  58
  59     protected DataNormalizationOperation(final T identifier, final SchemaNode schema) {
  60         this.identifier = identifier;
  61         dataSchemaNode = schema instanceof DataSchemaNode ? (DataSchemaNode)schema : null;
  62     }
  63
  64     public boolean isMixin() {
  65         return false;
  66     }
  67
  68
  69     public boolean isKeyedEntry() {
  70         return false;
  71     }
  72
  73     protected Set<QName> getQNameIdentifiers() {
  74         return Collections.singleton(identifier.getNodeType());
  75     }
  76
  77     public abstract DataNormalizationOperation<?> getChild(PathArgument child) throws DataNormalizationException;
  78
  79     public abstract DataNormalizationOperation<?> getChild(QName child) throws DataNormalizationException;
  80
  81     public abstract boolean isLeaf();
  82
  83     @SuppressModernizer
  84     public Optional<DataSchemaNode> getDataSchemaNode() {
  85         return Optional.fromNullable(dataSchemaNode);
  86     }
  87
  88     private abstract static class SimpleTypeNormalization<T extends PathArgument>
  89             extends DataNormalizationOperation<T> {
  90         SimpleTypeNormalization(final T identifier, final DataSchemaNode potential) {
  91             super(identifier,potential);
  92         }
  93
  94         @Override
  95         public DataNormalizationOperation<?> getChild(final PathArgument child) {
  96             return null;
  97         }
  98
  99         @Override
 100         public DataNormalizationOperation<?> getChild(final QName child) {
 101             return null;
 102         }
 103
 104         @Override
 105         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 106             return null;
 107         }
 108
 109         @Override
 110         public boolean isLeaf() {
 111             return true;
 112         }
 113     }
 114
 115     private static final class LeafNormalization extends SimpleTypeNormalization<NodeIdentifier> {
 116         LeafNormalization(final LeafSchemaNode potential) {
 117             super(new NodeIdentifier(potential.getQName()),potential);
 118         }
 119     }
 120
 121     private static final class LeafListEntryNormalization extends SimpleTypeNormalization<NodeWithValue> {
 122         LeafListEntryNormalization(final LeafListSchemaNode potential) {
 123             super(new NodeWithValue(potential.getQName(), null),potential);
 124         }
 125
 126         @Override
 127         public boolean isKeyedEntry() {
 128             return true;
 129         }
 130     }
 131
 132     private abstract static class CompositeNodeNormalizationOperation<T extends PathArgument>
 133             extends DataNormalizationOperation<T> {
 134         CompositeNodeNormalizationOperation(final T identifier, final DataSchemaNode schema) {
 135             super(identifier,schema);
 136         }
 137
 138         @Override
 139         public boolean isLeaf() {
 140             return false;
 141         }
 142     }
 143
 144     private abstract static class DataContainerNormalizationOperation<T extends PathArgument>
 145             extends CompositeNodeNormalizationOperation<T> {
 146         private final DataNodeContainer schema;
 147         private final Map<QName, DataNormalizationOperation<?>> byQName;
 148         private final Map<PathArgument, DataNormalizationOperation<?>> byArg;
 149
 150         DataContainerNormalizationOperation(final T identifier, final DataNodeContainer schema,
 151                 final DataSchemaNode node) {
 152             super(identifier,node);
 153             this.schema = schema;
 154             this.byArg = new ConcurrentHashMap<>();
 155             this.byQName = new ConcurrentHashMap<>();
 156         }
 157
 158         @Override
 159         public DataNormalizationOperation<?> getChild(final PathArgument child) throws DataNormalizationException {
 160             DataNormalizationOperation<?> potential = byArg.get(child);
 161             if (potential != null) {
 162                 return potential;
 163             }
 164             potential = fromLocalSchema(child);
 165             return register(potential);
 166         }
 167
 168         @Override
 169         public DataNormalizationOperation<?> getChild(final QName child) throws DataNormalizationException {
 170             DataNormalizationOperation<?> potential = byQName.get(child);
 171             if (potential != null) {
 172                 return potential;
 173             }
 174             potential = fromLocalSchemaAndQName(schema, child);
 175             return register(potential);
 176         }
 177
 178         private DataNormalizationOperation<?> fromLocalSchema(final PathArgument child)
 179                 throws DataNormalizationException {
 180             if (child instanceof AugmentationIdentifier) {
 181                 return fromSchemaAndQNameChecked(schema, ((AugmentationIdentifier) child).getPossibleChildNames()
 182                         .iterator().next());
 183             }
 184             return fromSchemaAndQNameChecked(schema, child.getNodeType());
 185         }
 186
 187         protected DataNormalizationOperation<?> fromLocalSchemaAndQName(final DataNodeContainer schema2,
 188                 final QName child) throws DataNormalizationException {
 189             return fromSchemaAndQNameChecked(schema2, child);
 190         }
 191
 192         private DataNormalizationOperation<?> register(final DataNormalizationOperation<?> potential) {
 193             if (potential != null) {
 194                 byArg.put(potential.getIdentifier(), potential);
 195                 for (final QName qname : potential.getQNameIdentifiers()) {
 196                     byQName.put(qname, potential);
 197                 }
 198             }
 199             return potential;
 200         }
 201
 202         private static DataNormalizationOperation<?> fromSchemaAndQNameChecked(final DataNodeContainer schema,
 203                 final QName child) throws DataNormalizationException {
 204
 205             final DataSchemaNode result = findChildSchemaNode(schema, child);
 206             if (result == null) {
 207                 throw new DataNormalizationException(String.format(
 208                         "Supplied QName %s is not valid according to schema %s, potential children nodes: %s", child,
 209                         schema,schema.getChildNodes()));
 210             }
 211
 212             // We try to look up if this node was added by augmentation
 213             if (schema instanceof DataSchemaNode && result.isAugmenting()) {
 214                 return fromAugmentation(schema, (AugmentationTarget) schema, result);
 215             }
 216             return fromDataSchemaNode(result);
 217         }
 218     }
 219
 220     private static final class ListItemNormalization extends
 221             DataContainerNormalizationOperation<NodeIdentifierWithPredicates> {
 222         ListItemNormalization(final NodeIdentifierWithPredicates identifier, final ListSchemaNode schema) {
 223             super(identifier, schema, schema);
 224         }
 225
 226         @Override
 227         @SuppressFBWarnings("BC_UNCONFIRMED_CAST")
 228         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 229             final DataContainerNodeBuilder<NodeIdentifierWithPredicates, MapEntryNode> builder = Builders
 230                     .mapEntryBuilder().withNodeIdentifier((NodeIdentifierWithPredicates) currentArg);
 231             for (final Entry<QName, Object> keyValue : ((NodeIdentifierWithPredicates) currentArg).entrySet()) {
 232                 builder.addChild(Builders.leafBuilder()
 233                         //
 234                         .withNodeIdentifier(new NodeIdentifier(keyValue.getKey())).withValue(keyValue.getValue())
 235                         .build());
 236             }
 237             return builder.build();
 238         }
 239
 240         @Override
 241         public boolean isKeyedEntry() {
 242             return true;
 243         }
 244     }
 245
 246     private static final class UnkeyedListItemNormalization
 247             extends DataContainerNormalizationOperation<NodeIdentifier> {
 248         UnkeyedListItemNormalization(final ListSchemaNode schema) {
 249             super(new NodeIdentifier(schema.getQName()), schema,schema);
 250         }
 251
 252         @Override
 253         @SuppressFBWarnings("BC_UNCONFIRMED_CAST")
 254         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 255             return Builders.unkeyedListEntryBuilder().withNodeIdentifier((NodeIdentifier) currentArg).build();
 256         }
 257     }
 258
 259     private static final class ContainerNormalization extends DataContainerNormalizationOperation<NodeIdentifier> {
 260         ContainerNormalization(final ContainerSchemaNode schema) {
 261             super(new NodeIdentifier(schema.getQName()),schema, schema);
 262         }
 263
 264         @Override
 265         @SuppressFBWarnings("BC_UNCONFIRMED_CAST")
 266         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 267             return Builders.containerBuilder().withNodeIdentifier((NodeIdentifier) currentArg).build();
 268         }
 269     }
 270
 271     private abstract static class MixinNormalizationOp<T extends PathArgument>
 272             extends CompositeNodeNormalizationOperation<T> {
 273
 274         MixinNormalizationOp(final T identifier, final DataSchemaNode schema) {
 275             super(identifier,schema);
 276         }
 277
 278         @Override
 279         public final boolean isMixin() {
 280             return true;
 281         }
 282     }
 283
 284     private static final class OrderedLeafListMixinNormalization extends UnorderedLeafListMixinNormalization {
 285         OrderedLeafListMixinNormalization(final LeafListSchemaNode potential) {
 286             super(potential);
 287         }
 288
 289         @Override
 290         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 291             return Builders.orderedLeafSetBuilder().withNodeIdentifier(getIdentifier()).build();
 292         }
 293     }
 294
 295     private static class UnorderedLeafListMixinNormalization extends MixinNormalizationOp<NodeIdentifier> {
 296
 297         private final DataNormalizationOperation<?> innerOp;
 298
 299         UnorderedLeafListMixinNormalization(final LeafListSchemaNode potential) {
 300             super(new NodeIdentifier(potential.getQName()),potential);
 301             innerOp = new LeafListEntryNormalization(potential);
 302         }
 303
 304         @Override
 305         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 306             return Builders.leafSetBuilder().withNodeIdentifier(getIdentifier()).build();
 307         }
 308
 309         @Override
 310         public DataNormalizationOperation<?> getChild(final PathArgument child) {
 311             if (child instanceof NodeWithValue) {
 312                 return innerOp;
 313             }
 314             return null;
 315         }
 316
 317         @Override
 318         public DataNormalizationOperation<?> getChild(final QName child) {
 319             if (getIdentifier().getNodeType().equals(child)) {
 320                 return innerOp;
 321             }
 322             return null;
 323         }
 324     }
 325
 326     private static final class AugmentationNormalization
 327             extends DataContainerNormalizationOperation<AugmentationIdentifier> {
 328
 329         AugmentationNormalization(final AugmentationSchemaNode augmentation, final DataNodeContainer schema) {
 330             super(augmentationIdentifierFrom(augmentation), augmentationProxy(augmentation,schema),null);
 331         }
 332
 333         private static DataNodeContainer augmentationProxy(final AugmentationSchemaNode augmentation,
 334                 final DataNodeContainer schema) {
 335             final Set<DataSchemaNode> children = new HashSet<>();
 336             for (final DataSchemaNode augNode : augmentation.getChildNodes()) {
 337                 children.add(schema.getDataChildByName(augNode.getQName()));
 338             }
 339             return new EffectiveAugmentationSchema(augmentation, children);
 340         }
 341
 342         @Override
 343         public boolean isMixin() {
 344             return true;
 345         }
 346
 347         @Override
 348         protected DataNormalizationOperation<?> fromLocalSchemaAndQName(final DataNodeContainer schema,
 349                 final QName child) {
 350             final DataSchemaNode result = findChildSchemaNode(schema, child);
 351             if (result == null) {
 352                 return null;
 353             }
 354
 355             // We try to look up if this node was added by augmentation
 356             if (schema instanceof DataSchemaNode && result.isAugmenting()) {
 357                 return fromAugmentation(schema, (AugmentationTarget) schema, result);
 358             }
 359             return fromDataSchemaNode(result);
 360         }
 361
 362         @Override
 363         protected Set<QName> getQNameIdentifiers() {
 364             return getIdentifier().getPossibleChildNames();
 365         }
 366
 367         @Override
 368         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 369             return Builders.augmentationBuilder().withNodeIdentifier(getIdentifier()).build();
 370         }
 371     }
 372
 373     private static class UnorderedMapMixinNormalization extends MixinNormalizationOp<NodeIdentifier> {
 374         private final ListItemNormalization innerNode;
 375
 376         UnorderedMapMixinNormalization(final ListSchemaNode list) {
 377             super(new NodeIdentifier(list.getQName()),list);
 378             this.innerNode = new ListItemNormalization(NodeIdentifierWithPredicates.of(list.getQName(),
 379                     Collections.<QName, Object>emptyMap()), list);
 380         }
 381
 382         @Override
 383         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 384             return Builders.mapBuilder().withNodeIdentifier(getIdentifier()).build();
 385         }
 386
 387         @Override
 388         public DataNormalizationOperation<?> getChild(final PathArgument child) {
 389             if (child.getNodeType().equals(getIdentifier().getNodeType())) {
 390                 return innerNode;
 391             }
 392             return null;
 393         }
 394
 395         @Override
 396         public DataNormalizationOperation<?> getChild(final QName child) {
 397             if (getIdentifier().getNodeType().equals(child)) {
 398                 return innerNode;
 399             }
 400             return null;
 401         }
 402     }
 403
 404     private static class UnkeyedListMixinNormalization extends MixinNormalizationOp<NodeIdentifier> {
 405         private final UnkeyedListItemNormalization innerNode;
 406
 407         UnkeyedListMixinNormalization(final ListSchemaNode list) {
 408             super(new NodeIdentifier(list.getQName()),list);
 409             this.innerNode = new UnkeyedListItemNormalization(list);
 410         }
 411
 412         @Override
 413         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 414             return Builders.unkeyedListBuilder().withNodeIdentifier(getIdentifier()).build();
 415         }
 416
 417         @Override
 418         public DataNormalizationOperation<?> getChild(final PathArgument child) {
 419             if (child.getNodeType().equals(getIdentifier().getNodeType())) {
 420                 return innerNode;
 421             }
 422             return null;
 423         }
 424
 425         @Override
 426         public DataNormalizationOperation<?> getChild(final QName child) {
 427             if (getIdentifier().getNodeType().equals(child)) {
 428                 return innerNode;
 429             }
 430             return null;
 431         }
 432     }
 433
 434     private static final class OrderedMapMixinNormalization extends UnorderedMapMixinNormalization {
 435         OrderedMapMixinNormalization(final ListSchemaNode list) {
 436             super(list);
 437         }
 438
 439         @Override
 440         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 441             return Builders.orderedMapBuilder().withNodeIdentifier(getIdentifier()).build();
 442         }
 443     }
 444
 445     private static class ChoiceNodeNormalization extends MixinNormalizationOp<NodeIdentifier> {
 446         private final ImmutableMap<QName, DataNormalizationOperation<?>> byQName;
 447         private final ImmutableMap<PathArgument, DataNormalizationOperation<?>> byArg;
 448
 449         ChoiceNodeNormalization(final ChoiceSchemaNode schema) {
 450             super(new NodeIdentifier(schema.getQName()),schema);
 451             final ImmutableMap.Builder<QName, DataNormalizationOperation<?>> byQNameBuilder = ImmutableMap.builder();
 452             final ImmutableMap.Builder<PathArgument, DataNormalizationOperation<?>> byArgBuilder =
 453                     ImmutableMap.builder();
 454
 455             for (final CaseSchemaNode caze : schema.getCases().values()) {
 456                 for (final DataSchemaNode cazeChild : caze.getChildNodes()) {
 457                     final DataNormalizationOperation<?> childOp = fromDataSchemaNode(cazeChild);
 458                     byArgBuilder.put(childOp.getIdentifier(), childOp);
 459                     for (final QName qname : childOp.getQNameIdentifiers()) {
 460                         byQNameBuilder.put(qname, childOp);
 461                     }
 462                 }
 463             }
 464             byQName = byQNameBuilder.build();
 465             byArg = byArgBuilder.build();
 466         }
 467
 468         @Override
 469         public DataNormalizationOperation<?> getChild(final PathArgument child) {
 470             return byArg.get(child);
 471         }
 472
 473         @Override
 474         public DataNormalizationOperation<?> getChild(final QName child) {
 475             return byQName.get(child);
 476         }
 477
 478         @Override
 479         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 480             return Builders.choiceBuilder().withNodeIdentifier(getIdentifier()).build();
 481         }
 482     }
 483
 484     private static class AnyxmlNormalization extends DataNormalizationOperation<NodeIdentifier> {
 485         AnyxmlNormalization(final AnyxmlSchemaNode schema) {
 486             super(new NodeIdentifier(schema.getQName()), schema);
 487         }
 488
 489         @Override
 490         public DataNormalizationOperation<?> getChild(final PathArgument child) {
 491             return null;
 492         }
 493
 494         @Override
 495         public DataNormalizationOperation<?> getChild(final QName child) {
 496             return null;
 497         }
 498
 499         @Override
 500         public boolean isLeaf() {
 501             return false;
 502         }
 503
 504         @Override
 505         public NormalizedNode<?, ?> createDefault(final PathArgument currentArg) {
 506             return null;
 507         }
 508     }
 509
 510     private static @Nullable DataSchemaNode findChildSchemaNode(final DataNodeContainer parent, final QName child) {
 511         final DataSchemaNode potential = parent.getDataChildByName(child);
 512         return potential != null ? potential : findChoice(parent, child);
 513     }
 514
 515     private static @Nullable ChoiceSchemaNode findChoice(final DataNodeContainer parent, final QName child) {
 516         for (final ChoiceSchemaNode choice : Iterables.filter(parent.getChildNodes(), ChoiceSchemaNode.class)) {
 517             for (final CaseSchemaNode caze : choice.getCases().values()) {
 518                 if (findChildSchemaNode(caze, child) != null) {
 519                     return choice;
 520                 }
 521             }
 522         }
 523         return null;
 524     }
 525
 526     public static AugmentationIdentifier augmentationIdentifierFrom(final AugmentationSchemaNode augmentation) {
 527         final ImmutableSet.Builder<QName> potentialChildren = ImmutableSet.builder();
 528         for (final DataSchemaNode child : augmentation.getChildNodes()) {
 529             potentialChildren.add(child.getQName());
 530         }
 531         return new AugmentationIdentifier(potentialChildren.build());
 532     }
 533
 534     /**
 535      * Returns a DataNormalizationOperation for provided child node.
 536      *
 537      * <p>
 538      * If supplied child is added by Augmentation this operation returns
 539      * a DataNormalizationOperation for augmentation,
 540      * otherwise returns a DataNormalizationOperation for child as
 541      * call for {@link #fromDataSchemaNode(DataSchemaNode)}.
 542      */
 543     @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
 544             justification = "https://github.com/spotbugs/spotbugs/issues/811")
 545     private static DataNormalizationOperation<?> fromAugmentation(final DataNodeContainer parent,
 546             final AugmentationTarget parentAug, final DataSchemaNode child) {
 547         AugmentationSchemaNode augmentation = null;
 548         for (final AugmentationSchemaNode aug : parentAug.getAvailableAugmentations()) {
 549             final DataSchemaNode potential = aug.getDataChildByName(child.getQName());
 550             if (potential != null) {
 551                 augmentation = aug;
 552                 break;
 553             }
 554
 555         }
 556         if (augmentation != null) {
 557             return new AugmentationNormalization(augmentation, parent);
 558         } else {
 559             return fromDataSchemaNode(child);
 560         }
 561     }
 562
 563     public static DataNormalizationOperation<?> fromDataSchemaNode(final DataSchemaNode potential) {
 564         if (potential instanceof ContainerSchemaNode) {
 565             return new ContainerNormalization((ContainerSchemaNode) potential);
 566         } else if (potential instanceof ListSchemaNode) {
 567
 568             return fromListSchemaNode((ListSchemaNode) potential);
 569         } else if (potential instanceof LeafSchemaNode) {
 570             return new LeafNormalization((LeafSchemaNode) potential);
 571         } else if (potential instanceof ChoiceSchemaNode) {
 572             return new ChoiceNodeNormalization((ChoiceSchemaNode) potential);
 573         } else if (potential instanceof LeafListSchemaNode) {
 574             return fromLeafListSchemaNode((LeafListSchemaNode) potential);
 575         } else if (potential instanceof AnyxmlSchemaNode) {
 576             return new AnyxmlNormalization((AnyxmlSchemaNode) potential);
 577         }
 578         return null;
 579     }
 580
 581     private static DataNormalizationOperation<?> fromListSchemaNode(final ListSchemaNode potential) {
 582         final List<QName> keyDefinition = potential.getKeyDefinition();
 583         if (keyDefinition == null || keyDefinition.isEmpty()) {
 584             return new UnkeyedListMixinNormalization(potential);
 585         }
 586         if (potential.isUserOrdered()) {
 587             return new OrderedMapMixinNormalization(potential);
 588         }
 589         return new UnorderedMapMixinNormalization(potential);
 590     }
 591
 592     private static DataNormalizationOperation<?> fromLeafListSchemaNode(final LeafListSchemaNode potential) {
 593         if (potential.isUserOrdered()) {
 594             return new OrderedLeafListMixinNormalization(potential);
 595         }
 596         return new UnorderedLeafListMixinNormalization(potential);
 597     }
 598
 599
 600     public static DataNormalizationOperation<?> from(final SchemaContext ctx) {
 601         return new ContainerNormalization(ctx);
 602     }
 603
 604     public abstract NormalizedNode<?, ?> createDefault(PathArgument currentArg);
 605 }