2 * Copyright (c) 2020 PANTHEON.tech, s.r.o. and others. All rights reserved.
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
8 package org.opendaylight.yangtools.yang.model.spi.meta;
10 import com.google.common.annotations.Beta;
11 import com.google.common.base.MoreObjects;
12 import com.google.common.base.Strings;
13 import com.google.common.collect.Collections2;
14 import com.google.common.collect.ImmutableSet;
15 import java.util.Collection;
16 import java.util.Optional;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.eclipse.jdt.annotation.NonNullByDefault;
19 import org.eclipse.jdt.annotation.Nullable;
20 import org.opendaylight.yangtools.concepts.Immutable;
21 import org.opendaylight.yangtools.concepts.Mutable;
22 import org.opendaylight.yangtools.yang.common.Empty;
23 import org.opendaylight.yangtools.yang.common.QName;
24 import org.opendaylight.yangtools.yang.model.api.ActionDefinition;
25 import org.opendaylight.yangtools.yang.model.api.ActionNodeContainer;
26 import org.opendaylight.yangtools.yang.model.api.AddedByUsesAware;
27 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
28 import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
29 import org.opendaylight.yangtools.yang.model.api.ConstraintMetaDefinition;
30 import org.opendaylight.yangtools.yang.model.api.ContainerLike;
31 import org.opendaylight.yangtools.yang.model.api.CopyableNode;
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.DerivableSchemaNode;
35 import org.opendaylight.yangtools.yang.model.api.DocumentedNode;
36 import org.opendaylight.yangtools.yang.model.api.GroupingDefinition;
37 import org.opendaylight.yangtools.yang.model.api.InputSchemaNode;
38 import org.opendaylight.yangtools.yang.model.api.MandatoryAware;
39 import org.opendaylight.yangtools.yang.model.api.MustConstraintAware;
40 import org.opendaylight.yangtools.yang.model.api.MustDefinition;
41 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
42 import org.opendaylight.yangtools.yang.model.api.NotificationNodeContainer;
43 import org.opendaylight.yangtools.yang.model.api.OperationDefinition;
44 import org.opendaylight.yangtools.yang.model.api.OutputSchemaNode;
45 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
46 import org.opendaylight.yangtools.yang.model.api.SchemaNodeDefaults;
47 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
48 import org.opendaylight.yangtools.yang.model.api.Status;
49 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
50 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
51 import org.opendaylight.yangtools.yang.model.api.UsesNode;
52 import org.opendaylight.yangtools.yang.model.api.WhenConditionAware;
53 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
54 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
55 import org.opendaylight.yangtools.yang.model.api.stmt.DescriptionEffectiveStatement;
56 import org.opendaylight.yangtools.yang.model.api.stmt.ErrorAppTagEffectiveStatement;
57 import org.opendaylight.yangtools.yang.model.api.stmt.ErrorMessageEffectiveStatement;
58 import org.opendaylight.yangtools.yang.model.api.stmt.InputEffectiveStatement;
59 import org.opendaylight.yangtools.yang.model.api.stmt.OutputEffectiveStatement;
60 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceEffectiveStatement;
61 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
62 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
63 import org.opendaylight.yangtools.yang.model.api.stmt.WhenEffectiveStatement;
64 import org.opendaylight.yangtools.yang.model.spi.meta.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
65 import org.opendaylight.yangtools.yang.xpath.api.YangXPathExpression.QualifiedBound;
68 * Mix-in interfaces providing services required by SchemaNode et al. These interfaces provide implementations, or
69 * implementation helpers based on default methods, so the correct behavior can be logically centralized.
72 public final class EffectiveStatementMixins {
73 // Marker interface requiring all mixins to be derived from EffectiveStatement.
74 private interface Mixin<A, D extends DeclaredStatement<A>> extends EffectiveStatement<A, D> {
75 @SuppressWarnings("unchecked")
76 default <T> @NonNull Collection<? extends @NonNull T> filterEffectiveStatements(final Class<T> type) {
77 // Yeah, this is not nice, but saves one transformation
78 return (Collection<? extends T>) Collections2.filter(effectiveSubstatements(), type::isInstance);
83 * Bridge between {@link EffectiveStatement} and {@link AugmentationTarget}.
85 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
86 * @param <D> Class representing declared version of this statement.
88 public interface AugmentationTargetMixin<A, D extends DeclaredStatement<A>>
89 extends Mixin<A, D>, AugmentationTarget {
91 default Collection<? extends AugmentationSchemaNode> getAvailableAugmentations() {
92 return filterEffectiveStatements(AugmentationSchemaNode.class);
97 * Bridge between {@link EffectiveStatementWithFlags} and {@link AddedByUsesAware}.
99 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
100 * @param <D> Class representing declared version of this statement.
102 public interface AddedByUsesMixin<A, D extends DeclaredStatement<A>>
103 extends EffectiveStatementWithFlags<A, D>, AddedByUsesAware {
105 default boolean isAddedByUses() {
106 return (flags() & FlagsBuilder.ADDED_BY_USES) != 0;
111 * Bridge between {@link EffectiveStatementWithFlags} and {@link ActionNodeContainer}.
113 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
114 * @param <D> Class representing declared version of this statement.
116 public interface ActionNodeContainerMixin<A, D extends DeclaredStatement<A>>
117 extends Mixin<A, D>, ActionNodeContainer {
119 default Collection<? extends ActionDefinition> getActions() {
120 return filterEffectiveStatements(ActionDefinition.class);
125 * Bridge between {@link EffectiveStatementWithFlags} and {@link NotificationNodeContainer}.
127 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
128 * @param <D> Class representing declared version of this statement.
130 public interface NotificationNodeContainerMixin<A, D extends DeclaredStatement<A>>
131 extends Mixin<A, D>, NotificationNodeContainer {
133 default Collection<? extends NotificationDefinition> getNotifications() {
134 return filterEffectiveStatements(NotificationDefinition.class);
139 * Bridge between {@link EffectiveStatementWithFlags} and {@link MustConstraintAware}.
141 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
142 * @param <D> Class representing declared version of this statement.
144 public interface MustConstraintMixin<A, D extends DeclaredStatement<A>> extends Mixin<A, D>, MustConstraintAware {
146 default Collection<? extends @NonNull MustDefinition> getMustConstraints() {
147 return filterEffectiveStatements(MustDefinition.class);
152 * Bridge between {@link EffectiveStatementWithFlags} and {@link CopyableNode}.
154 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
155 * @param <D> Class representing declared version of this statement.
157 public interface CopyableMixin<A, D extends DeclaredStatement<A>> extends AddedByUsesMixin<A, D>, CopyableNode {
159 default boolean isAugmenting() {
160 return (flags() & FlagsBuilder.AUGMENTING) != 0;
165 * Bridge between {@link EffectiveStatementWithFlags} and {@link DataNodeContainer}.
167 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
168 * @param <D> Class representing declared version of this statement.
170 public interface DataNodeContainerMixin<A, D extends DeclaredStatement<A>> extends DataNodeContainer, Mixin<A, D> {
172 default Collection<? extends TypeDefinition<?>> getTypeDefinitions() {
173 return filterTypeDefinitions(this);
177 default Collection<? extends DataSchemaNode> getChildNodes() {
178 return filterEffectiveStatements(DataSchemaNode.class);
182 default Collection<? extends GroupingDefinition> getGroupings() {
183 return filterEffectiveStatements(GroupingDefinition.class);
187 default Collection<? extends UsesNode> getUses() {
188 return filterEffectiveStatements(UsesNode.class);
193 * Bridge between {@link EffectiveStatementWithFlags} and {@link DataSchemaNode}.
195 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
196 * @param <D> Class representing declared version of this statement.
198 public interface DataSchemaNodeMixin<A, D extends DeclaredStatement<A>>
199 extends DataSchemaNode, CopyableMixin<A, D>, SchemaNodeMixin<A, D>, WhenConditionMixin<A, D> {
201 default Optional<Boolean> effectiveConfig() {
202 final int fl = flags() & FlagsBuilder.MASK_CONFIG;
204 case FlagsBuilder.CONFIG_FALSE:
205 return Optional.of(Boolean.FALSE);
206 case FlagsBuilder.CONFIG_TRUE:
207 return Optional.of(Boolean.TRUE);
208 case FlagsBuilder.CONFIG_UNDEF:
209 return Optional.empty();
211 throw new IllegalStateException("Unhandled effective config flags " + fl);
217 * Bridge between {@link EffectiveStatementWithFlags} and {@link DocumentedNode}.
219 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
220 * @param <D> Class representing declared version of this statement.
222 public interface DocumentedNodeMixin<A, D extends DeclaredStatement<A>> extends Mixin<A, D>, DocumentedNode {
224 * Bridge between {@link EffectiveStatementWithFlags} and
225 * {@link org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus}.
227 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
228 * @param <D> Class representing declared version of this statement.
230 interface WithStatus<A, D extends DeclaredStatement<A>>
231 extends EffectiveStatementWithFlags<A, D>, DocumentedNodeMixin<A, D>, DocumentedNode.WithStatus {
233 default Status getStatus() {
234 final int status = flags() & FlagsBuilder.MASK_STATUS;
236 case FlagsBuilder.STATUS_CURRENT:
237 return Status.CURRENT;
238 case FlagsBuilder.STATUS_DEPRECATED:
239 return Status.DEPRECATED;
240 case FlagsBuilder.STATUS_OBSOLETE:
241 return Status.OBSOLETE;
243 throw new IllegalStateException("Illegal status " + status);
249 default Optional<String> getDescription() {
250 return findFirstEffectiveSubstatementArgument(DescriptionEffectiveStatement.class);
254 default Optional<String> getReference() {
255 return findFirstEffectiveSubstatementArgument(ReferenceEffectiveStatement.class);
259 default Collection<? extends UnknownSchemaNode> getUnknownSchemaNodes() {
260 return filterEffectiveStatements(UnknownSchemaNode.class);
265 * Bridge between {@link EffectiveStatementWithFlags} and {@link ConstraintMetaDefinition}.
267 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
268 * @param <D> Class representing declared version of this statement.
270 public interface ConstraintMetaDefinitionMixin<A, D extends DeclaredStatement<A>> extends DocumentedNodeMixin<A, D>,
271 ConstraintMetaDefinition {
273 default Optional<String> getErrorAppTag() {
274 return findFirstEffectiveSubstatementArgument(ErrorAppTagEffectiveStatement.class);
278 default Optional<String> getErrorMessage() {
279 return findFirstEffectiveSubstatementArgument(ErrorMessageEffectiveStatement.class);
284 * Bridge between {@link EffectiveStatementWithFlags} and {@link MandatoryAware}.
286 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
287 * @param <D> Class representing declared version of this statement.
289 public interface MandatoryMixin<A, D extends DeclaredStatement<A>>
290 extends EffectiveStatementWithFlags<A, D>, MandatoryAware {
292 default boolean isMandatory() {
293 return (flags() & FlagsBuilder.MANDATORY) != 0;
298 * Bridge between {@link EffectiveStatementWithFlags} and {@code presence} statement.
300 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
301 * @param <D> Class representing declared version of this statement.
303 public interface PresenceMixin<A, D extends DeclaredStatement<A>> extends EffectiveStatementWithFlags<A, D> {
304 default boolean presence() {
305 return (flags() & FlagsBuilder.PRESENCE) != 0;
310 * Bridge between {@link EffectiveStatementWithFlags} and {@link SchemaNode}.
312 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
313 * @param <D> Class representing declared version of this statement.
315 public interface SchemaNodeMixin<A, D extends DeclaredStatement<A>>
316 extends DocumentedNodeMixin.WithStatus<A, D>, SchemaNode {
317 // FIXME: ditch all this complexity once we do not require SchemaPath
319 default QName getQName() {
320 return SchemaNodeDefaults.extractQName(pathObject());
325 default SchemaPath getPath() {
326 return SchemaNodeDefaults.extractPath(this, pathObject());
329 @NonNull Immutable pathObject();
333 * Bridge between {@link EffectiveStatementWithFlags} and {@link UnknownSchemaNode}.
335 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
336 * @param <D> Class representing declared version of this statement.
338 public interface UnknownSchemaNodeMixin<A, D extends DeclaredStatement<A>>
339 extends SchemaNodeMixin<A, D>, CopyableMixin<A, D>, UnknownSchemaNode {
342 default String getNodeParameter() {
343 return Strings.nullToEmpty(getDeclared().rawArgument());
348 * Bridge between {@link EffectiveStatementWithFlags} and {@code ordered-by} statement.
350 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
351 * @param <D> Class representing declared version of this statement.
353 public interface UserOrderedMixin<A, D extends DeclaredStatement<A>> extends EffectiveStatementWithFlags<A, D> {
354 default boolean userOrdered() {
355 return (flags() & FlagsBuilder.USER_ORDERED) != 0;
360 * Helper used to locate the effective {@code when} statement and exposing its argument as per
361 * {@link WhenConditionAware}.
363 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
364 * @param <D> Class representing declared version of this statement.
366 public interface WhenConditionMixin<A, D extends DeclaredStatement<A>> extends Mixin<A, D>, WhenConditionAware {
368 default Optional<QualifiedBound> getWhenCondition() {
369 return findFirstEffectiveSubstatementArgument(WhenEffectiveStatement.class);
374 * Helper bridge for operation containers ({@code input} and {@code output}).
376 * @param <D> Class representing declared version of this statement.
378 public interface OperationContainerMixin<D extends DeclaredStatement<QName>>
379 extends ContainerLike, DocumentedNodeMixin.WithStatus<QName, D>, DataNodeContainerMixin<QName, D>,
380 MustConstraintMixin<QName, D>, WhenConditionMixin<QName, D>, AugmentationTargetMixin<QName, D>,
381 SchemaNodeMixin<QName, D>, CopyableMixin<QName, D> {
383 default @NonNull QName argument() {
388 default Optional<ActionDefinition> findAction(final QName qname) {
389 return Optional.empty();
393 default Optional<NotificationDefinition> findNotification(final QName qname) {
394 return Optional.empty();
398 default Collection<? extends ActionDefinition> getActions() {
399 return ImmutableSet.of();
403 default Collection<? extends NotificationDefinition> getNotifications() {
404 return ImmutableSet.of();
408 default Optional<Boolean> effectiveConfig() {
409 return Optional.empty();
412 default String defaultToString() {
413 return MoreObjects.toStringHelper(this).add("qname", getQName()).toString();
418 * Helper bridge for {@code anydata} and {@code anyxml} opaque data.
420 * @param <D> Class representing declared version of this statement.
422 public interface OpaqueDataSchemaNodeMixin<D extends DeclaredStatement<QName>>
423 extends DerivableSchemaNode, DataSchemaNodeMixin<QName, D>, DocumentedNodeMixin.WithStatus<QName, D>,
424 MandatoryMixin<QName, D>, MustConstraintMixin<QName, D>, WhenConditionMixin<QName, D> {
426 default @NonNull QName argument() {
432 * Helper bridge for {@code rpc} and {@code action} operations.
434 * @param <D> Class representing declared version of this statement.
436 public interface OperationDefinitionMixin<D extends DeclaredStatement<QName>>
437 extends SchemaNodeMixin<QName, D>, OperationDefinition {
439 default @NonNull QName argument() {
444 default Collection<? extends @NonNull TypeDefinition<?>> getTypeDefinitions() {
445 return filterTypeDefinitions(this);
449 default Collection<? extends @NonNull GroupingDefinition> getGroupings() {
450 return filterEffectiveStatements(GroupingDefinition.class);
454 default InputSchemaNode getInput() {
455 return findAsContainer(this, InputEffectiveStatement.class, InputSchemaNode.class);
459 default OutputSchemaNode getOutput() {
460 return findAsContainer(this, OutputEffectiveStatement.class, OutputSchemaNode.class);
465 * Support interface for various mixins. Implementations are required to store 32bits worth of flags, which are
466 * globally assigned to sub-interfaces -- thus providing storage for many low-cardinality properties.
468 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
469 * @param <D> Class representing declared version of this statement.
471 public interface EffectiveStatementWithFlags<A, D extends DeclaredStatement<A>> extends Mixin<A, D> {
473 * Return flags associated with this statements. Flags can be built using {@link FlagsBuilder}.
475 * @return Flag field value (32 bits).
480 final class FlagsBuilder implements Mutable {
481 // We still have 23 flags remaining
482 static final int STATUS_CURRENT = 0x0001;
483 static final int STATUS_DEPRECATED = 0x0002;
484 static final int STATUS_OBSOLETE = 0x0003;
485 static final int MASK_STATUS = 0x0003;
487 static final int MANDATORY = 0x0004;
489 static final int AUGMENTING = 0x0010;
490 static final int ADDED_BY_USES = 0x0020;
491 private static final int MASK_HISTORY = 0x0030;
493 static final int USER_ORDERED = 0x0040;
494 static final int PRESENCE = 0x0080;
496 static final int CONFIG_UNDEF = 0x0100;
497 static final int CONFIG_FALSE = 0x0200;
498 static final int CONFIG_TRUE = 0x0300;
499 static final int MASK_CONFIG = CONFIG_TRUE;
503 public FlagsBuilder setConfiguration(final @Nullable Boolean config) {
505 if (config != null) {
506 fl = config ? CONFIG_TRUE : CONFIG_FALSE;
510 flags = flags & ~MASK_CONFIG | fl;
514 public FlagsBuilder setHistory(final CopyableNode history) {
515 flags = flags & ~MASK_HISTORY
516 | (history.isAugmenting() ? AUGMENTING : 0) | (history.isAddedByUses() ? ADDED_BY_USES : 0);
520 public FlagsBuilder setMandatory(final boolean mandatory) {
529 public FlagsBuilder setPresence(final boolean presence) {
538 public FlagsBuilder setStatus(final Status status) {
542 bits = STATUS_CURRENT;
545 bits = STATUS_DEPRECATED;
548 bits = STATUS_OBSOLETE;
551 throw new IllegalStateException("Unhandled status " + status);
554 flags = flags & ~MASK_STATUS | bits;
558 public FlagsBuilder setUserOrdered(final boolean userOrdered) {
560 flags |= USER_ORDERED;
562 flags &= ~USER_ORDERED;
567 public int toFlags() {
573 private EffectiveStatementMixins() {
576 static <T extends ContainerLike> T findAsContainer(final EffectiveStatement<?, ?> stmt,
577 final Class<? extends EffectiveStatement<QName, ?>> type, final Class<T> target) {
578 return target.cast(stmt.findFirstEffectiveSubstatement(type).get());
581 static Collection<? extends @NonNull TypeDefinition<?>> filterTypeDefinitions(final Mixin<?, ?> stmt) {
582 return Collections2.transform(stmt.filterEffectiveStatements(TypedefEffectiveStatement.class),
583 TypedefEffectiveStatement::getTypeDefinition);
586 public static int historyAndStatusFlags(final CopyableNode history,
587 final Collection<? extends EffectiveStatement<?, ?>> substatements) {
588 return new FlagsBuilder()
590 .setStatus(substatements.stream()
591 .filter(StatusEffectiveStatement.class::isInstance)
593 .map(stmt -> ((StatusEffectiveStatement) stmt).argument())
594 .orElse(Status.CURRENT))