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.TypedefNamespace;
35 * Base stateless superclass for statements which (logically) always have an associated {@link DeclaredStatement}. This
36 * is notably not true for all {@code case} statements, some of which may actually be implied.
39 * Note implementations are not strictly required to make the declared statement available, they are free to throw
40 * {@link UnsupportedOperationException} from {@link #getDeclared()}, rendering any services relying on declared
41 * statement to be not available.
43 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
44 * @param <D> Class representing declared version of this statement.
47 public abstract class AbstractDeclaredEffectiveStatement<A, D extends DeclaredStatement<A>>
48 extends AbstractEffectiveStatement<A, D> {
50 public final StatementOrigin statementOrigin() {
51 return StatementOrigin.DECLARATION;
55 public abstract @NonNull D getDeclared();
58 * Base stateless superclass form {@link SchemaTreeAwareEffectiveStatement}s. It maintains the contents of schema
59 * tree namespace based of effective substatements.
61 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
62 * @param <D> Class representing declared version of this statement.
63 * @param <E> Class representing effective version of this statement.
65 public abstract static class WithSchemaTree<A, D extends DeclaredStatement<A>,
66 E extends SchemaTreeAwareEffectiveStatement<A, D>> extends AbstractDeclaredEffectiveStatement<A, D> {
68 @SuppressWarnings("unchecked")
69 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
70 final Class<N> namespace) {
71 if (SchemaTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
72 return Optional.of((Map<K, V>) schemaTreeNamespace());
74 return super.getNamespaceContents(namespace);
78 * Indexing support for {@link DataNodeContainer#dataChildByName(QName)}.
80 protected final @Nullable DataSchemaNode dataSchemaNode(final QName name) {
81 // Only DataNodeContainer subclasses should be calling this method
82 verify(this instanceof DataNodeContainer);
83 final SchemaTreeEffectiveStatement<?> child = schemaTreeNamespace().get(requireNonNull(name));
84 return child instanceof DataSchemaNode ? (DataSchemaNode) child : null;
87 protected abstract Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace();
91 * Base stateless superclass for {@link DataTreeAwareEffectiveStatement}s. It maintains the contents of data tree
92 * namespace based of effective substatements.
94 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
95 * @param <D> Class representing declared version of this statement.
96 * @param <E> Class representing effective version of this statement.
98 public abstract static class WithDataTree<A, D extends DeclaredStatement<A>,
99 E extends DataTreeAwareEffectiveStatement<A, D>> extends WithSchemaTree<A, D, E> {
101 @SuppressWarnings("unchecked")
102 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
103 final Class<N> namespace) {
104 if (DataTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
105 return Optional.of((Map<K, V>) dataTreeNamespace());
107 return super.getNamespaceContents(namespace);
110 protected abstract Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace();
114 * A stateful version of {@link AbstractDeclaredEffectiveStatement}, which holds (and requires) a declared
117 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
118 * @param <D> Class representing declared version of this statement.
120 public abstract static class Default<A, D extends DeclaredStatement<A>>
121 extends AbstractDeclaredEffectiveStatement<A, D> {
122 private final @NonNull D declared;
124 protected Default(final D declared) {
125 this.declared = requireNonNull(declared);
128 protected Default(final Default<A, D> original) {
129 this.declared = original.declared;
133 public final @NonNull D getDeclared() {
139 * An extra building block on top of {@link Default}, which is wiring {@link #argument()} to the declared statement.
140 * This is mostly useful for arguments that are not subject to inference transformation -- for example Strings in
141 * {@code description}, etc. This explicitly is not true of statements which underwent namespace binding via
142 * {@code uses} or similar.
144 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
145 * @param <D> Class representing declared version of this statement.
147 public abstract static class DefaultArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
148 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
149 extends DefaultArgument<A, D> {
150 private final @NonNull Object substatements;
152 protected WithSubstatements(final D declared,
153 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
155 this.substatements = maskList(substatements);
158 protected WithSubstatements(final WithSubstatements<A, D> original) {
160 this.substatements = original.substatements;
164 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
165 return unmaskList(substatements);
169 protected DefaultArgument(final D declared) {
173 protected DefaultArgument(final DefaultArgument<A, D> original) {
178 public final A argument() {
179 return getDeclared().argument();
184 * A building block on top of {@link Default}, which adds an explicit argument value, which is not related to the
185 * context. This is mostly useful when the effective argument value reflects additional statements and similar.
187 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
188 * @param <D> Class representing declared version of this statement.
190 public abstract static class DefaultWithArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
191 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
192 extends DefaultWithArgument<A, D> {
193 private final @NonNull Object substatements;
195 protected WithSubstatements(final D declared, final A argument,
196 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
197 super(declared, argument);
198 this.substatements = maskList(substatements);
202 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
203 return unmaskList(substatements);
207 private final A argument;
209 protected DefaultWithArgument(final D declared, final A argument) {
211 this.argument = argument;
215 public final A argument() {
221 * Stateful version of {@link WithSchemaTree}. Schema tree namespace is eagerly instantiated (and checked).
223 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
224 * @param <D> Class representing declared version of this statement.
225 * @param <E> Class representing effective version of this statement.
227 public abstract static class DefaultWithSchemaTree<A, D extends DeclaredStatement<A>,
228 E extends SchemaTreeAwareEffectiveStatement<A, D>> extends WithSchemaTree<A, D, E> {
229 private final @NonNull ImmutableMap<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
230 private final @NonNull Object substatements;
231 private final @NonNull D declared;
233 protected DefaultWithSchemaTree(final D declared,
234 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
235 this.declared = requireNonNull(declared);
236 this.substatements = maskList(substatements);
237 this.schemaTree = ImmutableMap.copyOf(createSchemaTreeNamespace(substatements));
240 protected DefaultWithSchemaTree(final DefaultWithSchemaTree<A, D, E> original) {
241 this.declared = original.declared;
242 this.schemaTree = original.schemaTree;
243 this.substatements = original.substatements;
247 public final D getDeclared() {
252 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
253 return unmaskList(substatements);
257 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
263 * Stateful version of {@link WithDataTree}. Schema tree and data tree namespaces are eagerly instantiated
266 * @param <A> Argument type ({@link Empty} if statement does not have argument.)
267 * @param <D> Class representing declared version of this statement.
268 * @param <E> Class representing effective version of this statement.
270 public abstract static class DefaultWithDataTree<A, D extends DeclaredStatement<A>,
271 E extends DataTreeAwareEffectiveStatement<A, D>> extends WithDataTree<A, D, E> {
272 public abstract static class WithTypedefNamespace<A, D extends DeclaredStatement<A>,
273 E extends DataTreeAwareEffectiveStatement<A, D>> extends DefaultWithDataTree<A, D, E> {
274 protected WithTypedefNamespace(final D declared,
275 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
276 super(declared, substatements);
277 // Consistency check only
278 createTypedefNamespace(substatements);
281 protected WithTypedefNamespace(final WithTypedefNamespace<A, D, E> original) {
286 @SuppressWarnings("unchecked")
287 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
288 final Class<N> namespace) {
289 if (TypedefNamespace.class.equals(namespace)) {
290 return Optional.of((Map<K, V>) new LinearTypedefNamespace(effectiveSubstatements()));
292 return super.getNamespaceContents(namespace);
296 private final @NonNull ImmutableMap<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
297 private final @NonNull ImmutableMap<QName, DataTreeEffectiveStatement<?>> dataTree;
298 private final @NonNull Object substatements;
299 private final @NonNull D declared;
301 protected DefaultWithDataTree(final D declared,
302 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
303 this.declared = requireNonNull(declared);
304 this.substatements = maskList(substatements);
306 // Note we call schema.values() so we do not retain them, as that is just pure memory overhead
307 final Map<QName, SchemaTreeEffectiveStatement<?>> schema = createSchemaTreeNamespace(substatements);
308 this.schemaTree = ImmutableMap.copyOf(schema);
309 this.dataTree = createDataTreeNamespace(schema.values(), schemaTree);
312 protected DefaultWithDataTree(final DefaultWithDataTree<A, D, E> original) {
313 this.declared = original.declared;
314 this.schemaTree = original.schemaTree;
315 this.dataTree = original.dataTree;
316 this.substatements = original.substatements;
320 public final D getDeclared() {
325 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
326 return unmaskList(substatements);
330 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
335 protected final Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace() {