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 static com.google.common.base.Verify.verify;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.Beta;
14 import com.google.common.collect.ImmutableList;
15 import com.google.common.collect.ImmutableMap;
17 import java.util.Optional;
18 import org.eclipse.jdt.annotation.NonNull;
19 import org.eclipse.jdt.annotation.Nullable;
20 import org.opendaylight.yangtools.yang.common.Empty;
21 import org.opendaylight.yangtools.yang.common.QName;
22 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
23 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
24 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
25 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
26 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
27 import org.opendaylight.yangtools.yang.model.api.meta.StatementOrigin;
28 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeAwareEffectiveStatement;
29 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeEffectiveStatement;
30 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeAwareEffectiveStatement;
31 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeEffectiveStatement;
32 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefEffectiveStatement;
33 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefNamespace;
36 * Base stateless superclass for statements which (logically) always have an associated {@link DeclaredStatement}. This
37 * is notably not true for all {@code case} statements, some of which may actually be implied.
40 * Note implementations are not strictly required to make the declared statement available, they are free to throw
41 * {@link UnsupportedOperationException} from {@link #getDeclared()}, rendering any services relying on declared
42 * statement to be not available.
44 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
45 * @param <D> Class representing declared version of this statement.
48 public abstract class AbstractDeclaredEffectiveStatement<A, D extends DeclaredStatement<A>>
49 extends AbstractEffectiveStatement<A, D> {
51 public final StatementOrigin statementOrigin() {
52 return StatementOrigin.DECLARATION;
56 public abstract @NonNull D getDeclared();
59 * Base stateless superclass form {@link SchemaTreeAwareEffectiveStatement}s. It maintains the contents of schema
60 * tree namespace based of effective substatements.
62 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
63 * @param <D> Class representing declared version of this statement.
64 * @param <E> Class representing effective version of this statement.
66 public abstract static class WithSchemaTree<A, D extends DeclaredStatement<A>,
67 E extends SchemaTreeAwareEffectiveStatement<A, D>> extends AbstractDeclaredEffectiveStatement<A, D> {
69 @SuppressWarnings("unchecked")
70 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
71 final Class<N> namespace) {
72 if (SchemaTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
73 return Optional.of((Map<K, V>) schemaTreeNamespace());
75 return super.getNamespaceContents(namespace);
79 * Indexing support for {@link DataNodeContainer#dataChildByName(QName)}.
81 protected final @Nullable DataSchemaNode dataSchemaNode(final QName name) {
82 // Only DataNodeContainer subclasses should be calling this method
83 verify(this instanceof DataNodeContainer);
84 final SchemaTreeEffectiveStatement<?> child = schemaTreeNamespace().get(requireNonNull(name));
85 return child instanceof DataSchemaNode ? (DataSchemaNode) child : null;
88 protected abstract Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace();
92 * Base stateless superclass for {@link DataTreeAwareEffectiveStatement}s. It maintains the contents of data tree
93 * namespace based of effective substatements.
95 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
96 * @param <D> Class representing declared version of this statement.
97 * @param <E> Class representing effective version of this statement.
99 public abstract static class WithDataTree<A, D extends DeclaredStatement<A>,
100 E extends DataTreeAwareEffectiveStatement<A, D>> extends WithSchemaTree<A, D, E> {
102 @SuppressWarnings("unchecked")
103 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
104 final Class<N> namespace) {
105 if (DataTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
106 return Optional.of((Map<K, V>) dataTreeNamespace());
108 return super.getNamespaceContents(namespace);
111 protected abstract Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace();
115 * A stateful version of {@link AbstractDeclaredEffectiveStatement}, which holds (and requires) a declared
118 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
119 * @param <D> Class representing declared version of this statement.
121 public abstract static class Default<A, D extends DeclaredStatement<A>>
122 extends AbstractDeclaredEffectiveStatement<A, D> {
123 private final @NonNull D declared;
125 protected Default(final D declared) {
126 this.declared = requireNonNull(declared);
129 protected Default(final Default<A, D> original) {
130 this.declared = original.declared;
134 public final @NonNull D getDeclared() {
140 * An extra building block on top of {@link Default}, which is wiring {@link #argument()} to the declared statement.
141 * This is mostly useful for arguments that are not subject to inference transformation -- for example Strings in
142 * {@code description}, etc. This explicitly is not true of statements which underwent namespace binding via
143 * {@code uses} or similar.
145 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
146 * @param <D> Class representing declared version of this statement.
148 public abstract static class DefaultArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
149 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
150 extends DefaultArgument<A, D> {
151 private final @NonNull Object substatements;
153 protected WithSubstatements(final D declared,
154 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
156 this.substatements = maskList(substatements);
159 protected WithSubstatements(final WithSubstatements<A, D> original) {
161 this.substatements = original.substatements;
165 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
166 return unmaskList(substatements);
170 protected DefaultArgument(final D declared) {
174 protected DefaultArgument(final DefaultArgument<A, D> original) {
179 public final A argument() {
180 return getDeclared().argument();
185 * A building block on top of {@link Default}, which adds an explicit argument value, which is not related to the
186 * context. This is mostly useful when the effective argument value reflects additional statements and similar.
188 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
189 * @param <D> Class representing declared version of this statement.
191 public abstract static class DefaultWithArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
192 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
193 extends DefaultWithArgument<A, D> {
194 private final @NonNull Object substatements;
196 protected WithSubstatements(final D declared, final A argument,
197 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
198 super(declared, argument);
199 this.substatements = maskList(substatements);
203 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
204 return unmaskList(substatements);
208 private final A argument;
210 protected DefaultWithArgument(final D declared, final A argument) {
212 this.argument = argument;
216 public final A argument() {
222 * Stateful version of {@link WithSchemaTree}. Schema tree namespace is eagerly instantiated (and checked).
224 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
225 * @param <D> Class representing declared version of this statement.
226 * @param <E> Class representing effective version of this statement.
228 public abstract static class DefaultWithSchemaTree<A, D extends DeclaredStatement<A>,
229 E extends SchemaTreeAwareEffectiveStatement<A, D>> extends WithSchemaTree<A, D, E> {
230 private final @NonNull ImmutableMap<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
231 private final @NonNull Object substatements;
232 private final @NonNull D declared;
234 protected DefaultWithSchemaTree(final D declared,
235 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
236 this.declared = requireNonNull(declared);
237 this.substatements = maskList(substatements);
238 this.schemaTree = ImmutableMap.copyOf(createSchemaTreeNamespace(substatements));
241 protected DefaultWithSchemaTree(final DefaultWithSchemaTree<A, D, E> original) {
242 this.declared = original.declared;
243 this.schemaTree = original.schemaTree;
244 this.substatements = original.substatements;
248 public final D getDeclared() {
253 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
254 return unmaskList(substatements);
258 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
264 * Stateful version of {@link WithDataTree}. Schema tree and data tree namespaces are eagerly instantiated
267 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
268 * @param <D> Class representing declared version of this statement.
269 * @param <E> Class representing effective version of this statement.
271 public abstract static class DefaultWithDataTree<A, D extends DeclaredStatement<A>,
272 E extends DataTreeAwareEffectiveStatement<A, D>> extends WithDataTree<A, D, E> {
273 public abstract static class WithTypedefNamespace<A, D extends DeclaredStatement<A>,
274 E extends DataTreeAwareEffectiveStatement<A, D>> extends DefaultWithDataTree<A, D, E> {
275 private final @NonNull ImmutableMap<QName, TypedefEffectiveStatement> typedefNamespace;
277 protected WithTypedefNamespace(final D declared,
278 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
279 super(declared, substatements);
280 this.typedefNamespace = createTypedefNamespace(substatements);
283 protected WithTypedefNamespace(final WithTypedefNamespace<A, D, E> original) {
285 this.typedefNamespace = original.typedefNamespace;
289 @SuppressWarnings("unchecked")
290 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
291 final Class<N> namespace) {
292 if (TypedefNamespace.class.equals(namespace)) {
293 return Optional.of((Map<K, V>) typedefNamespace);
295 return super.getNamespaceContents(namespace);
299 private final @NonNull ImmutableMap<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
300 private final @NonNull ImmutableMap<QName, DataTreeEffectiveStatement<?>> dataTree;
301 private final @NonNull Object substatements;
302 private final @NonNull D declared;
304 protected DefaultWithDataTree(final D declared,
305 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
306 this.declared = requireNonNull(declared);
307 this.substatements = maskList(substatements);
309 // Note we call schema.values() so we do not retain them, as that is just pure memory overhead
310 final Map<QName, SchemaTreeEffectiveStatement<?>> schema = createSchemaTreeNamespace(substatements);
311 this.schemaTree = ImmutableMap.copyOf(schema);
312 this.dataTree = createDataTreeNamespace(schema.values(), schemaTree);
315 protected DefaultWithDataTree(final DefaultWithDataTree<A, D, E> original) {
316 this.declared = original.declared;
317 this.schemaTree = original.schemaTree;
318 this.dataTree = original.dataTree;
319 this.substatements = original.substatements;
323 public final D getDeclared() {
328 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
329 return unmaskList(substatements);
333 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
338 protected final Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace() {