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;
16 import java.util.Optional;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.eclipse.jdt.annotation.Nullable;
19 import org.opendaylight.yangtools.yang.common.Empty;
20 import org.opendaylight.yangtools.yang.common.QName;
21 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
22 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
23 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
24 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
25 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
26 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeAwareEffectiveStatement;
27 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeEffectiveStatement;
28 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeAwareEffectiveStatement;
29 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeEffectiveStatement;
30 import org.opendaylight.yangtools.yang.model.api.stmt.TypedefNamespace;
33 * Base stateless superclass for statements which (logically) always have an associated {@link DeclaredStatement}. This
34 * is notably not true for all {@code case} statements, some of which may actually be implied.
37 * Note implementations are not strictly required to make the declared statement available, they are free to throw
38 * {@link UnsupportedOperationException} from {@link #getDeclared()}, rendering any services relying on declared
39 * statement to be not available.
41 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
42 * @param <D> Class representing declared version of this statement.
45 public abstract class AbstractDeclaredEffectiveStatement<A, D extends DeclaredStatement<A>>
46 extends AbstractEffectiveStatement<A, D> {
48 public abstract @NonNull D getDeclared();
51 * Base stateless superclass form {@link SchemaTreeAwareEffectiveStatement}s. It maintains the contents of schema
52 * tree namespace based of effective substatements.
54 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
55 * @param <D> Class representing declared version of this statement.
57 public abstract static class WithSchemaTree<A, D extends DeclaredStatement<A>>
58 extends AbstractDeclaredEffectiveStatement<A, D> {
60 @SuppressWarnings("unchecked")
61 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
62 final Class<N> namespace) {
63 if (SchemaTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
64 return Optional.of((Map<K, V>) schemaTreeNamespace());
66 return super.getNamespaceContents(namespace);
70 * Indexing support for {@link DataNodeContainer#dataChildByName(QName)}.
72 protected final @Nullable DataSchemaNode dataSchemaNode(final QName name) {
73 // Only DataNodeContainer subclasses should be calling this method
74 verify(this instanceof DataNodeContainer);
75 final SchemaTreeEffectiveStatement<?> child = schemaTreeNamespace().get(requireNonNull(name));
76 return child instanceof DataSchemaNode ? (DataSchemaNode) child : null;
79 protected abstract Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace();
83 * Base stateless superclass for {@link DataTreeAwareEffectiveStatement}s. It maintains the contents of data tree
84 * namespace based of effective substatements.
86 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
87 * @param <D> Class representing declared version of this statement.
89 public abstract static class WithDataTree<A, D extends DeclaredStatement<A>> extends WithSchemaTree<A, D> {
91 @SuppressWarnings("unchecked")
92 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
93 final Class<N> namespace) {
94 if (DataTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
95 return Optional.of((Map<K, V>) dataTreeNamespace());
97 return super.getNamespaceContents(namespace);
100 protected abstract Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace();
104 * A stateful version of {@link AbstractDeclaredEffectiveStatement}, which holds (and requires) a declared
107 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
108 * @param <D> Class representing declared version of this statement.
110 public abstract static class Default<A, D extends DeclaredStatement<A>>
111 extends AbstractDeclaredEffectiveStatement<A, D> {
112 private final @NonNull D declared;
114 protected Default(final D declared) {
115 this.declared = requireNonNull(declared);
118 protected Default(final Default<A, D> original) {
119 this.declared = original.declared;
123 public final @NonNull D getDeclared() {
129 * An extra building block on top of {@link Default}, which is wiring {@link #argument()} to the declared statement.
130 * This is mostly useful for arguments that are not subject to inference transformation -- for example Strings in
131 * {@code description}, etc. This explicitly is not true of statements which underwent namespace binding via
132 * {@code uses} or similar.
134 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
135 * @param <D> Class representing declared version of this statement.
137 public abstract static class DefaultArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
138 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
139 extends DefaultArgument<A, D> {
140 private final @NonNull Object substatements;
142 protected WithSubstatements(final D declared,
143 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
145 this.substatements = maskList(substatements);
148 protected WithSubstatements(final WithSubstatements<A, D> original) {
150 this.substatements = original.substatements;
154 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
155 return unmaskList(substatements);
159 protected DefaultArgument(final D declared) {
163 protected DefaultArgument(final DefaultArgument<A, D> original) {
168 public final A argument() {
169 return getDeclared().argument();
174 * A building block on top of {@link Default}, which adds an explicit argument value, which is not related to the
175 * context. This is mostly useful when the effective argument value reflects additional statements and similar.
177 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
178 * @param <D> Class representing declared version of this statement.
180 public abstract static class DefaultWithArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
181 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
182 extends DefaultWithArgument<A, D> {
183 private final @NonNull Object substatements;
185 protected WithSubstatements(final D declared, final A argument,
186 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
187 super(declared, argument);
188 this.substatements = maskList(substatements);
192 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
193 return unmaskList(substatements);
197 private final A argument;
199 protected DefaultWithArgument(final D declared, final A argument) {
201 this.argument = argument;
205 public final A argument() {
211 * Stateful version of {@link WithSchemaTree}. Schema tree namespace is eagerly instantiated (and checked).
213 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
214 * @param <D> Class representing declared version of this statement.
216 public abstract static class DefaultWithSchemaTree<A, D extends DeclaredStatement<A>> extends WithSchemaTree<A, D> {
217 private final @NonNull Map<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
218 private final @NonNull Object substatements;
219 private final @NonNull D declared;
221 protected DefaultWithSchemaTree(final D declared,
222 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
223 this.declared = requireNonNull(declared);
224 this.substatements = maskList(substatements);
225 this.schemaTree = immutableNamespaceOf(createSchemaTreeNamespace(substatements));
228 protected DefaultWithSchemaTree(final DefaultWithSchemaTree<A, D> original) {
229 this.declared = original.declared;
230 this.schemaTree = original.schemaTree;
231 this.substatements = original.substatements;
235 public final D getDeclared() {
240 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
241 return unmaskList(substatements);
245 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
251 * Stateful version of {@link WithDataTree}. Schema tree and data tree namespaces are eagerly instantiated
254 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
255 * @param <D> Class representing declared version of this statement.
257 public abstract static class DefaultWithDataTree<A, D extends DeclaredStatement<A>> extends WithDataTree<A, D> {
258 public abstract static class WithTypedefNamespace<A, D extends DeclaredStatement<A>>
259 extends DefaultWithDataTree<A, D> {
260 protected WithTypedefNamespace(final D declared,
261 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
262 super(declared, substatements);
263 // Consistency check only
264 createTypedefNamespace(substatements);
267 protected WithTypedefNamespace(final WithTypedefNamespace<A, D> original) {
272 @SuppressWarnings("unchecked")
273 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
274 final Class<N> namespace) {
275 if (TypedefNamespace.class.equals(namespace)) {
276 return Optional.of((Map<K, V>) new LinearTypedefNamespace(effectiveSubstatements()));
278 return super.getNamespaceContents(namespace);
282 private final @NonNull Map<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
283 private final @NonNull Map<QName, DataTreeEffectiveStatement<?>> dataTree;
284 private final @NonNull Object substatements;
285 private final @NonNull D declared;
287 protected DefaultWithDataTree(final D declared,
288 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
289 this.declared = requireNonNull(declared);
290 this.substatements = maskList(substatements);
292 // Note we call schema.values() so we do not retain them, as that is just pure memory overhead
293 final Map<QName, SchemaTreeEffectiveStatement<?>> schema = createSchemaTreeNamespace(substatements);
294 this.schemaTree = immutableNamespaceOf(schema);
295 this.dataTree = createDataTreeNamespace(schema.values(), schemaTree);
298 protected DefaultWithDataTree(final DefaultWithDataTree<A, D> original) {
299 this.declared = original.declared;
300 this.schemaTree = original.schemaTree;
301 this.dataTree = original.dataTree;
302 this.substatements = original.substatements;
306 public final D getDeclared() {
311 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
312 return unmaskList(substatements);
316 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
321 protected final Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace() {